CN101155421B - Method and device for distributing temporary recognition number of subdistrict wireless network - Google Patents
Method and device for distributing temporary recognition number of subdistrict wireless network Download PDFInfo
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- CN101155421B CN101155421B CN2007100982306A CN200710098230A CN101155421B CN 101155421 B CN101155421 B CN 101155421B CN 2007100982306 A CN2007100982306 A CN 2007100982306A CN 200710098230 A CN200710098230 A CN 200710098230A CN 101155421 B CN101155421 B CN 101155421B
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Abstract
A base station distributes C-RNTI method comprising steps: the user equipment sends the random access leader sequence to the base station; the base station sends the response message to the random access leader sequence to the user equipment, the message comprises: a distributing information of the uplink resource, a time regulating information, and an information together with the random access leader sequence identification number indicating CRNTI. The user equipment will send L3 message to the network end; the network end will send response of the L3 message to the user equipment. The present invention uses the random access leader sequence and sending sub-frame used by the user equipment and detected by the base station comparing with the traditional C-RNTI distributing method. The present invention sends the random access channel information to packet C-RNTI, thereby decreasing the indicating information bit needed by the C-RNTI distribution, decreasing the signaling burden needed by the C-RNTI distribution, optimizing the random access course, promoting the performance of the random access.
Description
Technical field
The present invention relates to a kind of distribution method that is used for the cell-radio network temporary identifier (C-RNTI) of non-synchronized random access procedure in the mobile radio communications system.
Background technology
Now, third generation gpp (being called for short 3GPP) standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE).About the discussion of LTE, OFDM (OFDM) technology will be as the down physical layer transmission technology among the LTE according at present, and single-carrier frequency division multiple access insert (being called for short SC-FDMA) will be as the upstream physical layer transmission technology among the LTE.
A very important process in the communication system of LTE is exactly a random access procedure, and whether random access procedure is according to existing uplink synchronous to be divided into synchronous random access procedure and non-synchronized random access procedure.The non-synchronized random access procedure is used for the connection of initial physical channel and the resource request of uplink scheduling.
The purpose that subscriber equipment sends non-synchronized random access request to network terminal comprises:
-receive the timing adjustment (timing adjustment) of network terminal, to obtain uplink synchronous;
-distribute to network terminal application subscriber equipment identifier, just apply for the distribution of cell-radio network temporary identifier (C-RNTI);
-send the ascending resource request and be used for transmission and comprise Radio Resource control (RRC) message, Non-Access Stratum (NAS) message and dispatch request information two layers/message of three layers (L2/L3).
According to the discussion of current LTE about non-synchronized random access channel, non-synchronized random inserts and comprises following reciprocal process:
-the first step, subscriber equipment sends random access leader sequence to network terminal;
This step is only sent arbitrary access front signal, and the amount of information that can carry in the arbitrary access front signal is very limited, the information of transmission 4～6 bits that subscriber equipment can imply through arbitrary access front signal.
In-the second step, network terminal is sent the response message of random access leader sequence to subscriber equipment;
Comprise the ascending resource that sends the follow-up distribution according to the time adjustment (timingadjustment) of arbitrary access front signal calculating, for subscriber equipment in this response message.It should be noted that in this response message to comprise the CRNTI that distributes to subscriber equipment, also possibly not comprise CRNTI.
In-Di three step, subscriber equipment be the message of two layers of transmissions on the ascending resource of its distribution/three layers (L2/L3) at network;
The message of this L2/L3 comprises Radio Resource control (RRC) message, Non-Access Stratum (NAS) message and dispatch request information two layers/message of three layers (L2/L3).
In four steps of-Di, network terminal is sent the response of L2/L3 message to subscriber equipment.
If in the accidental access response in second step, network terminal is not given user equipment allocation CRNTI, will give user equipment allocation in this step so.
There is company to propose at present; At first step subscriber equipment when network terminal is sent at random leading access sequence; Initiate reason (Cause) information that non-synchronized random inserts with using the targeting sequencing indication; The method of indication is that targeting sequencing is divided into groups, and on the same group targeting sequencing will indicate the reason of different non-synchronized random accesses.The reason that the non-synchronized random that can indicate inserts is as shown in the table:
The reason that table 1 non-synchronized random inserts
Can find out that from last table if the reason of the targeting sequencing that subscriber equipment sent that network terminal is received indication has shown that this subscriber equipment has or do not have C-RNTI, if C-RNTI has been arranged, network terminal will no longer need be given user equipment allocation C-RNTI so.
For the distribution of C-RNTI, two kinds of methods are arranged also at present:
A kind of is the distribution of sending C-RNTI in the response message of described in front the 4th step network terminal to the L2/L3 message of subscriber equipment transmission.
The distribution of sending C-RNTI in the response message of the random access leader sequence that a kind of in addition described in front second step network terminal is sent.
For first kind; The distribution of in the response message of the L2/L3 message that network terminal is sent to subscriber equipment, sending C-RNTI; In the response message of the second step network terminal, there is not the distribution of C-RNTI so to the random access leader sequence of subscriber equipment; (Implicit CRNTI I-CRNTI) identified this subscriber equipment before network terminal is given user equipment allocation C-RANTI in this message, just to need an implicit CRNTI so.
I-CRNTI is a subclass of reserving a C-RNTI who comes out in total C-RNTI space (space), is specifically designed in random access procedure subscriber equipment and does not obtain representing subscriber equipment before the distribution of C-RNTI.Each I-CRNTI in this sub-set all with a targeting sequencing or also perhaps corresponding with the combination of frequency domain of random access channel sequence number with targeting sequencing, subframe numbers with the combination of targeting sequencing and subframe numbers.Targeting sequencing or targeting sequencing and transmission subframe or targeting sequencing have at random at random been selected at random when subscriber equipment like this; After the frequency domain sequence number of the RACH of transmission subframe and transmission; Just known and its corresponding I-CRNTI; Although this makes subscriber equipment not have the distribution of C-RNTI, also can receive message that network terminal is sent to subscriber equipment according to this I-CRNTI.
The benefit of this method is before random collision does not solve fully, do not have the distribution of C-RNTI, has avoided C-RNTI to distribute the signaling of being brought to bear.Yet the shortcoming of this method is that the C-RNTI space requirement reserves additional space and is used for I-CRNTI.If I-CRNTI is corresponding with targeting sequencing; Because different users may adopt identical targeting sequencing to initiate to insert at random on the different time or on the different frequency; Therefore network terminal when sending message to subscriber equipment except transmission I-CRNTI; Also need indicate subscriber equipment to send the subframe numbers of targeting sequencing and the sequence number of frequency domain, this may introduce extra signaling burden.And if I-CRNTI is corresponding with the combination institute of targeting sequencing, subframe numbers and frequency domain sequence number, the so corresponding space of reserving will be bigger.
Second method for the C-RNTI distribution; Network terminal is directly distributed C-RNTI in the response message of targeting sequencing; Will be contained in the corresponding identifier RA_ID of targeting sequencing like this in the response message of targeting sequencing; Ascending resource distributes (UL-RA), and regularly adjustment (Timing Adjustment, TA) and C-RNTI.Though this mode; Can make subscriber equipment obtain the distribution of C-RNTI earlier; But because the C-RNTI sequence length is longer; And network terminal can't obtain the precise channels quality information when the response of sending targeting sequencing to subscriber equipment, give user equipment allocation C-RNTI at this moment, and its signaling burden is bigger.In addition; There is company to propose to utilize the L1/L2 control channel to send the response of random access leader sequence to subscriber equipment at present; Can avoid the required signaling burden of allocation of downlink shared data channel although utilize the response of L1/L2 control channel transmission preamble sequence; But, make that it almost is impossible utilizing the distribution that the L1/L2 control channel transmits C-RNTI because the burden of transmission C-RNTI is too big.
Therefore be necessary the method for salary distribution of C-RNTI is improved, distribute corresponding signaling burden to reduce C-RNTI, thereby random access procedure is optimized, improve the performance that inserts at random.
Summary of the invention
To the problems referred to above, the present invention seeks to propose the distribution method of a kind of C-RNTI, distribute corresponding signaling burden to reduce C-RNTI, optimize random access procedure, improve the efficient that inserts at random.
According to one side of the present invention, the method for a kind of base station assigns C-RNTI comprises step:
A) subscriber equipment sends random access leader sequence to the base station;
B) response message of random access leader sequence is sent to subscriber equipment in the base station, and this message comprises: the assignment information of ascending resource, and timing adjustment information, and make up the information of indication CRNTI together with the random access leader sequence identifier;
C) subscriber equipment will send the message of L3 to network terminal;
D) network terminal can be sent the response of L3 message to subscriber equipment.
According to a further aspect in the invention, a kind of base station equipment that is used to realize the C-RNTI distribution comprises antenna, adds Cyclic Prefix, the OFDM modulation module, and modulation, rate-matched, chnnel coding/interleaving block also comprises:
A) random access leader sequence detector is used for detecting the random access leader sequence that subscriber equipment sends, and identification is sent subframe and sent RACH;
B) controller; Be used for according to the C-RNTI grouping of the detected random access leader sequence of random access leader sequence detector, transmission subframe and transmission RACH with reference to the definite random access leader sequence response of being sent of the grouping corresponding relation of confirming in the C-RNTI grouping corresponding relation module; And in grouping, select suitable C-RNTI, pass to the control information maker afterwards and generate the control information that CRNTI distributes;
C) dispensing device is used to send the control information that C-RNTI distributes.
The present invention is with respect to traditional C-RNTI distribution method; Utilized the detected with access lead sequence, transmission subframe of subscriber equipment use with the base station; Send RACH information C-RNTI is divided into groups, distribute required indication information bit, reduced C-RNTI and distributed required signaling burden thereby reduced C-RNTI; Random access procedure is realized optimization, improved the performance that inserts at random.
Description of drawings
Fig. 1 is the operating procedure of base station in first kind of implementation of C-RNTI distribution method of the present invention;
Fig. 2 is the operating procedure of base station in first kind of implementation of C-RNTI distribution method of the present invention;
Fig. 3 is the random access procedure Signalling exchange that in the response message of targeting sequencing, sends the C-RNTI assignment;
Fig. 4 is the random access procedure Signalling exchange that in the response message of L2/L3 message, sends the C-RNTI assignment;
Fig. 5 is the operating procedure of base station in second kind of implementation of C-RNTI distribution method of the present invention;
Fig. 6 is the response message format of base station to the random access leader sequence of subscriber equipment transmission;
Fig. 7 is the operating procedure of subscriber equipment in second kind of implementation of C-RNTI distribution method of the present invention;
Fig. 8 is the Signalling exchange between subscriber equipment and base station in second kind of implementation of C-RNTI distribution method of the present invention;
Fig. 9 is that the hardware of base station in the C-RNTI distribution method of the present invention is realized block diagram;
Figure 10 is the random access leader sequence response message format that transmits in the L1/L2 control signaling;
Figure 11 is that base station assigns C-RNTI hardware is realized block diagram among the embodiment.
Embodiment
The distribution method of the C-RNTI that the present invention proposes is to reduce C-RNTI through the mode of being divided into groups in the C-RNTI space to distribute required information bit; Be exactly according to random access leader sequence specifically; Perhaps targeting sequencing and insert the combination of subframe numbers at random; Also or targeting sequencing, the combination that inserts subframe numbers and insert frequency domain channel number at random at random, divided into groups in the C-RNTI space, and network terminal is sent according to subscriber equipment and is inserted the targeting sequencing of being selected for use at random; The targeting sequencing of perhaps selecting for use and the subframe numbers of transmission; Also or the targeting sequencing selected for use, send the frequency domain channel number of subframe numbers and transmission, confirm to give the group at the CRNTI place that this user distributes, and the still untapped C-RNTI of selection distributes to this user in this group.Because the C-RNTI that can distribute is a sub-set in whole C-RNTI space; Therefore show that at this sub-set middle finger the required information bit of the C-RNTI that distributed will be less than indicating the required bit number of C-RNTI that is distributed in whole C-RNTI space, thereby realized the reduction of the corresponding signaling burden of indication C-RNTI.
The present invention proposes a kind of C-RNTI distribution method, and has provided step and the equipment of realizing this C-RNTI distribution method.
At first the present invention has provided first kind of implementation of the C-RNTI distribution method that proposes in order to realize, the required operating procedure in base station under this implementation is as shown in Figure 1:
At first the packet mode (101) to the C-RNTI of user equipment allocation is known in the base station.The base station knows that the method to the packet mode of the C-RNTI of subscriber equipment can be by the be fixed up packet mode of C-RNTI of standard; Other nodes that can also be network terminal are configured packet mode, and through the signaling base station; It also can be the packet mode that C-RNTI is confirmed in base station oneself; Confirm the packet mode of C-RNTI such as the base station according to the configuration of own configuration and accidental channel to random sequence, perhaps the configuration of random sequence and/or accidental channel is confirmed the packet mode of C-RNTI according to other nodes of network terminal.
Afterwards, the random access leader sequence of base station reception subscriber equipment transmission confirms that this inserts the pairing C-RNTI group of request (102) at random;
Then, confirming to divide into groups to the C-RNTI that this subscriber equipment distributed in the base station, and in C-RNTI divides into groups, selects a C-RNTI to send C-RNTI assignment (103) to subscriber equipment.Specifically being embodied as of this step: certain still unappropriated C-RNTI is selected in the base station in determined C-RNTI group, and when needs are given user equipment allocation C-RNTI, sends the sequence number of selected C-RNTI in this group to subscriber equipment, realizes the C-RNTI assignment.
The base station can be transmitted in the response message of random access leader sequence to the C-RNTI assignment that subscriber equipment sends in step 103, can also in the response message of base station to 2/ layer of 3 (L2/L3) message of layer of subscriber equipment transmission, transmit.If in the response message of random access leader sequence, transmit, the assignment of C-RNTI can be transmitted in 1/ layer of 2 (L1/L2) control channel of layer so, also can in descending shared data channel, transmit.
It should be noted that the distribution method of dividing into groups according to above-mentioned C-RNTI, the C-RNTI that may occur in certain C-RNTI grouping distributes situation about exhausting.For fear of this appearance that exhausts, above-mentioned distribution method possibly also need comprise step: the heavy assignment signalling of C-RNTI is sent to some subscriber equipment of having accomplished random access procedure in the base station.
The heavy assignment signalling of C-RNTI is sent to some subscriber equipment that has inserted in the base station, can make its C-RNTI that uses other groupings, and discharge the C-RNTI that original C-RNTI divides into groups, and can avoid the distribution of the C-RNTI in some C-RNTI grouping to exhaust like this.
The grouping of in the inventive method the C-RNTI space of giving user equipment allocation being carried out can have following mode:
C-RNTI space packet mode 1:
C-RNTI space packet mode 1 is based on the packet mode of random access leader sequence, and the number of supposing the targeting sequencing that is used to divide into groups is N
RSIndividual, can provide a kind of packet mode so shown in formula (1).Suppose that the C-RNTI in whole C-RNTI space has N
TIndividual, the sequence number of C-RNTI in whole C-RNTI space is n, and sequence number is the sequence number n of the grouping under the C-RNTI of n so
gFor:
n
g＝n?mod?N
RS 0≤n≤N
T(1)
Can provide based on the C-RNTI packet mode of targeting sequencing as shown in table 2 according to formula (1).
The packet mode based on targeting sequencing in table 2C-RNTI space
C-RNTI space packet mode 2:
C-RNTI space packet mode 2 is based on the packet mode of the random access leader sequence and the combination of transmission subframe (or transmission frame).The purpose of dividing into groups for C-RNTI based on transmission subframe (or transmission frame) is also will divide into groups with reference to the time (timereference to the RA) of inserting transmission at random to the grouping of C-RNTI.The number of supposing the targeting sequencing that is used to divide into groups is N
RSIndividual, be N and insert the number of the subframe (or frame) of access at random that can transmit in the transmission cycle at random at one
FN, can provide a kind of packet mode so shown in formula (2).Suppose that the C-RNTI in whole C-RNTI space has N
TIndividual, the sequence number of C-RNTI in whole C-RNTI space is n, and sequence number is the sequence number n of the grouping under the C-RNTI of n so
gFor:
n
g＝nmod(N
RS*N
FN)0≤n≤N
T(2)
Can provide based on targeting sequencing as shown in table 3 according to formula (2) with the C-RNTI packet mode of the combination of transmission subframe (or transmission frame).
Table 3C-RNTI space based on the packet mode of targeting sequencing with the combination of transmission subframe (or transmission frame)
C-RNTI space packet mode 3:
C-RNTI space packet mode 3 is based on the packet mode of the random access leader sequence and the combination of the frequency domain of random access channel sequence number of transmission subframe (or transmission frame) and transmission.The purpose of dividing into groups for C-RNTI based on the frequency domain of random access channel sequence number is also will divide into groups with reference to the frequency (frequency reference to the RA) that inserts transmission at random to the grouping of C-RNTI.The number of supposing the targeting sequencing that is used to divide into groups is N
RSIndividual, be N and insert the number of the subframe (or frame) of access at random that can transmit in the transmission cycle at random at one
FN, and the same number that inserts the RACH in the transmission subframe (or frame) at random is N
CN, can provide a kind of packet mode so shown in formula (3).Suppose that the C-RNTI in whole C-RNTI space has N
TIndividual, the sequence number of C-RNTI in whole C-RNTI space is n, and sequence number is the sequence number n of the grouping under the C-RNTI of n so
gFor:
n
g＝nmod(N
RS*N
FN*N
CN)0≤n≤N
T (3)
Can provide based on the C-RNTI packet mode of the frequency domain of random access channel sequence number combination of transmitting subframe (or transmission frame) and transmission as shown in table 4 according to formula (3).
Shown in the table 1 of front, the targeting sequencing that inserts at random can be indicated different reasons, and wherein some reason shows that subscriber equipment has C-RNTI, and some reason shows that subscriber equipment does not have C-RNTI.The number of supposing the sequence that is used to indicate subscriber equipment not have C-RNTI is N
NCIndividual, the number of the targeting sequencing that is used to divide into groups in three kinds of C-RNTI packet modes so given here is N
RSCan equal N
NC, also can be less than N
NC
The packet mode that C-RNTI given here has been arranged; Received the random access leader sequence that subscriber equipment sends in network terminal; Just can be according to targeting sequencing, or the combination of targeting sequencing and transmission subframe (or frame), or the combination of the frequency domain sequence number of targeting sequencing, transmission subframe (or frame) and RACH is confirmed; The grouping that the C-RNTI that distribute for this user belongs to; And in this divides into groups, select a untapped C-RNTI, and with the sequence number of this C-RNTI in this divides into groups, thereby send to the distribution that subscriber equipment just can be realized C-RNTI.
The present invention provides the required operating procedure of subscriber equipment under first kind of mode of C-RNTI distribution method, and is as shown in Figure 2:
At first subscriber equipment is known the packet mode (201) that C-RNTI distributes.Subscriber equipment knows that the method to the packet mode of the C-RNTI of subscriber equipment can be by the be fixed up packet mode of C-RNTI of standard; Also can be that network terminal is configured packet mode, and through the signaling subscriber equipment; Can also be that subscriber equipment is confirmed by subscriber equipment oneself configuration of random sequence and/or the configuration of accidental channel according to network terminal.
Afterwards, subscriber equipment is selected random access leader sequence when needs initiate to insert at random, selects to send subframe (or frame), selects RACH, sends random access leader sequence (202) to the base station.
Then; Subscriber equipment receives the sequence number (203) of C-RNTI in C-RNTI divides into groups of sending the base station; And according to the random access leader sequence that is sent, or the combination of targeting sequencing and transmission subframe (or frame), or the combination of the RACH of targeting sequencing and transmission subframe (or frame) and transmission; The grouping at the C-RNTI place of confirming with reference to the packet mode known to be distributed, and according to the grouping and the definite C-RNTI that is distributed of sequence number of C-RNTI.
After subscriber equipment has been accomplished random access procedure, the transfer of data (204) between beginning and the base station;
After random access procedure is accomplished, if the base station has new C-RNTI to divide timing to it, receive the new C-RNTI that sends the base station and distribute, use new C-RNTI (205).
According to method proposed by the invention; The base station is in the assignment of sending C-RNTI to subscriber equipment; Promptly send the sequence number of C-RNTI in grouping, transmission in second of the described random access procedure step is in front promptly transmitted in the response message of network terminal to the random access leader sequence of subscriber equipment transmission; Also transmit in the 4th of described random access procedure the step in front, promptly in the response message of the L2/L3 message that network terminal is sent to subscriber equipment, transmit.
If it is in the response message of random access leader sequence, to transmit that the sequence number of C-RNTI in grouping sent in the base station, the signalling interactive process between base station and the subscriber equipment is as shown in Figure 3 so.
At first, subscriber equipment sends random access leader sequence (301) to the base station;
Secondly, the base station will comprise in this message to the response message (302) of subscriber equipment transmission random access leader sequence: the distribution of ascending resource, the sequence number of C-RNTI in grouping that subscriber equipment distributed given in regularly adjustment, and base station.
Afterwards, subscriber equipment will send the message (303) of L2/L3 to network terminal;
Then, network terminal can be sent the response (304) of L2/L3 message to subscriber equipment;
After subscriber equipment has been accomplished random access procedure; If the C-RNTI during the C-RNTI at the employed C-RNTI of subscriber equipment place divides into groups is near exhausting; Network terminal can be sent the heavy assignment messages (305) of C-RNTI to subscriber equipment so, gives user equipment allocation the new C-RNTI in other divide into groups.
Wherein, In step 302; The base station also can comprise to the response message of the random access leader sequence that subscriber equipment sends: the assignment information of ascending resource; Timing adjustment information, (Random Access preamble ID RA_ID) and with RA_ID makes up the information of indicating CRNTI to the corresponding identifier of random access leader sequence together.Wherein and the RA_ID information that makes up indication CRNTI together can be that sequence number in CRNTI divides into groups is given the C-RNTI that subscriber equipment distributes in the base station.
Wherein, in step 302, the sequence number of C-RNTI in grouping that transmission is distributed can be transmitted in one deck/two layer control channel (L1/L2control channel), also can in DSCH Downlink Shared Channel (DL-SCH), transmit.
If it is in the response message of L2/L3 message, to transmit that the sequence number of C-RNTI in grouping sent in the base station, the signalling interactive process between base station and the subscriber equipment is as shown in Figure 4 so.
At first, subscriber equipment sends random access leader sequence (401) to the base station;
Secondly, the base station will comprise in this message to the response message (402) of subscriber equipment transmission random access leader sequence: the distribution of ascending resource, information such as timing adjustment.
Afterwards, subscriber equipment will send the message (403) of L2/L3 to network terminal;
Then, network terminal can be sent the response (404) of L2/L3 message to subscriber equipment, in this message, will comprise the base station and give the serial number information of C-RNTI in grouping that subscriber equipment sent;
After subscriber equipment has been accomplished random access procedure; If the C-RNTI during the C-RNTI at the employed C-RNTI of subscriber equipment place divides into groups is near exhausting; Network terminal can be sent the heavy assignment messages (405) of C-RNTI to subscriber equipment so, gives user equipment allocation the new C-RNTI in other divide into groups.
The given C-RNTI distribution method of the present invention also has other a kind of implementation, and under this mode, the base station respective phases of operation is as shown in Figure 5.
At first the packet mode (501) to the C-RNTI of user equipment allocation is known in the base station.The base station knows that the method to the packet mode of the C-RNTI of subscriber equipment can be by the be fixed up packet mode of C-RNTI of standard; Other nodes that can also be network terminal are configured packet mode, and through the signaling base station; It also can be the packet mode that C-RNTI is confirmed in base station oneself; Confirm the packet mode of C-RNTI such as the base station according to the configuration of own configuration and accidental channel to random sequence, perhaps the configuration of random sequence and/or accidental channel is confirmed the packet mode of C-RNTI according to other nodes of network terminal.
Afterwards, the random access leader sequence of base station reception subscriber equipment transmission confirms that this inserts the pairing C-RNTI group of request (502) at random;
Then, confirming to divide into groups to the C-RNTI that this subscriber equipment distributed in the base station, and in C-RNTI divides into groups, selects a C-RNTI to send C-RNTI assignment (503) to subscriber equipment.
The base station can be transmitted in the response message of random access leader sequence to the C-RNTI assignment that subscriber equipment sends in step 503, can also in the response message of base station to 2/ layer of 3 (L2/L3) message of layer of subscriber equipment transmission, transmit.
If in the response message of random access leader sequence, transmit, the assignment of C-RNTI can be transmitted in 1/ layer of 2 (L1/L2) control channel of layer so, also can in descending shared data channel, transmit.
If in the L1/L2 control channel, transmit, specifically being embodied as of this step so: in determined C-RNTI group, select an available C-RNTI to send L1/L2 control signaling to subscriber equipment and send the response of targeting sequencing at random as this user's C-RNTI.In this step, will comprise in the response message of the targeting sequencing at random that is sent: ascending resource distributes, regularly adjustment, and C-RNTI and other possible information.Wherein C-RNTI will do XOR (XOR) operation with the CRC position, then transmission (mask CRC) together.In this step, the base station is as shown in Figure 6 to the response message format of the random access leader sequence that subscriber equipment sends.
It should be noted that the distribution method of dividing into groups according to above-mentioned C-RNTI, the C-RNTI that may occur in certain C-RNTI grouping distributes situation about exhausting.For fear of this appearance that exhausts, above-mentioned distribution method possibly also need comprise step: the heavy assignment signalling of C-RNTI is sent to some subscriber equipment of having accomplished random access procedure in the base station.
The heavy assignment signalling of C-RNTI is sent to some subscriber equipment that has inserted in the base station; Can make it use the C-RNTI outside the C-RNTI packet space; And discharge the C-RNTI that original C-RNTI divides into groups, can avoid the distribution of the C-RNTI during some C-RNTI divides into groups in the C-RNTI packet space to exhaust like this.
In the inventive method second way C-RNTI is divided into groups, at first will be the sub-set { C-RNTI in total C-RNTI space
n, N
Start≤n≤N
EndAs the C-RNTI packet space, the C-RNTI in this space accomplishes the C-RNTI that can use afterwards with random access procedure in the random access procedure, and then this part C-RNTI is divided into groups.And the C-RNTI that divides into groups can not be distributed in as initial C-RNTI and distributes to the user in the initial random access procedure, heavily distributes time-division provisioned user equipment and only can after random access procedure is accomplished, be C-RNTI.
The grouping that the C-RNTI packet space is carried out can have following mode:
The packet mode 1 of C-RNTI packet space:
C-RNTI space packet mode 1 is based on the packet mode of random access leader sequence, and the number of supposing the targeting sequencing that is used to divide into groups is N
RSIndividual, can provide a kind of packet mode so shown in formula (1).Suppose that the sequence number of C-RNTI in whole C-RNTI space is n, the subclass at C-RNTI packet space place is { C-RNTI
n, N
Start≤n≤N
End, the sequence number in this C-RNTI packet space is the sequence number n of the grouping under the C-RNTI of n so
gFor:
n
g＝n?mod?N
RS N
start≤n≤N
end (4)
The packet mode 2 of C-RNTI packet space:
The packet mode 2 of C-RNTI packet space is based on the packet mode of the random access leader sequence and the combination of transmission subframe (or transmission frame).The purpose of dividing into groups for C-RNTI based on transmission subframe (or transmission frame) is also will divide into groups with reference to the time (timereference to the RA) of inserting transmission at random to the grouping of C-RNTI.The number of supposing the targeting sequencing that is used to divide into groups is N
RSIndividual, be N and insert the number of the subframe (or frame) of access at random that can transmit in the transmission cycle at random at one
FN, can provide a kind of packet mode so shown in formula (5).Suppose that the sequence number of C-RNTI in whole C-RNTI space is n, the subclass at C-RNTI packet space place is { C-RNTI
n, N
Start≤n≤N
End, the sequence number in this C-RNTI packet space is the sequence number n of the grouping under the C-RNTI of n so
gFor:
n
g＝nmod(N
RS*N
FN) N
start≤n≤N
end (5)
The packet mode 3 of C-RNTI packet space:
The packet mode 3 of C-RNTI packet space is based on the packet mode of the random access leader sequence and the combination of the frequency domain of random access channel sequence number of transmission subframe (or transmission frame) and transmission.The purpose of dividing into groups for C-RNTI based on the frequency domain of random access channel sequence number is also will divide into groups with reference to the frequency (frequency reference to the RA) that inserts transmission at random to the grouping of C-RNTI.The number of supposing the targeting sequencing that is used to divide into groups is N
RSIndividual, be N and insert the number of the subframe (or frame) of access at random that can transmit in the transmission cycle at random at one
FN, and the same number that inserts the RACH in the transmission subframe (or frame) at random is N
CN, can provide a kind of packet mode so shown in formula (6).Suppose that the sequence number of C-RNTI in whole C-RNTI space is n, the subclass at C-RNTI packet space place is { C-RNTI
n, N
Start≤n≤N
End, the sequence number in this C-RNTI packet space is the sequence number n of the grouping under the C-RNTI of n so
gFor:
n
g＝nmod(N
RS*N
FN*N
CN)N
start≤n≤N
end (6)
Shown in the table 1 of front, the targeting sequencing that inserts at random can be indicated different reasons, and wherein some reason shows that subscriber equipment has C-RNTI, and some reason shows that subscriber equipment does not have C-RNTI.The number of supposing the sequence that is used to indicate subscriber equipment not have C-RNTI is N
NCIndividual, the number of the targeting sequencing that is used to divide into groups in three kinds of C-RNTI packet modes so given here is N
RSCan equal N
NC, also can be less than N
NC
The packet mode that C-RNTI given here has been arranged; Received the random access leader sequence that subscriber equipment sends in network terminal, just can be according to targeting sequencing, or the combination of targeting sequencing and transmission subframe (or frame); Or the combination of the frequency domain sequence number of targeting sequencing, transmission subframe (or frame) and RACH is confirmed; The grouping that the C-RNTI that distribute for this user belongs to, and in this divides into groups, select a untapped C-RNTI, and with the identifier of this C-RNTI as this user; In the L1/L2 control channel, send the response message of random access leader sequence to subscriber equipment.
The present invention provides the required operating procedure of subscriber equipment under the second way of C-RNTI distribution method, and is as shown in Figure 7:
At first subscriber equipment is known the packet mode (701) that C-RNTI distributes.Subscriber equipment knows that the method to the packet mode of the C-RNTI of subscriber equipment can be by the be fixed up packet mode of C-RNTI of standard; Also can be that network terminal is configured packet mode, and through the signaling subscriber equipment; Can also be that subscriber equipment is confirmed by subscriber equipment oneself configuration of random sequence and/or the configuration of accidental channel according to network terminal.
Afterwards, subscriber equipment is selected random access leader sequence when needs initiate to insert at random, selects to send subframe (or frame), selects RACH, sends random access leader sequence (702) to the base station.
Then, receive the response message of the targeting sequencing that sends the base station, the C-RNTI (703) that comprises in the identification response message.The method of subscriber equipment identification C-RNTI is; At first confirm and the grouping of the transmission corresponding C-RNTI of random access leader sequence according to the transmission of random access leader sequence; Successively C-RNTI and the CRC position mask field together that comprises in the targeting sequencing response message detected with all C-RNTI that comprise in dividing into groups then, thereby identify the C-RNTI that comprises in this message.
Subscriber equipment will send L2/L3 message to the base station afterwards, and receives the response (704) of the L2/L3 message of sending the base station.
After subscriber equipment has been accomplished random access procedure, the transfer of data (705) between beginning and the base station;
After random access procedure is accomplished, if the base station has new C-RNTI to divide timing to it, receive the heavy assignment messages of the C-RNTI that sends the base station, use new C-RNTI (706).
It is as shown in Figure 8 that the present invention provides under the second way of C-RNTI distribution method the signalling interactive process between the base station and subscriber equipment:
At first, subscriber equipment sends random access leader sequence (801) to the base station;
Secondly, the base station will comprise in this message to the response message (802) of subscriber equipment transmission random access leader sequence: the distribution of ascending resource, the C-RNTI that subscriber equipment distributed is given in regularly adjustment, and base station.Wherein, C-RNTI will with CRC position mask together.
Afterwards, subscriber equipment will send the message (803) of L2/L3 to network terminal;
Then, network terminal can be sent the response (804) of L2/L3 message to subscriber equipment;
After subscriber equipment has been accomplished random access procedure; If the C-RNTI during the C-RNTI at the employed C-RNTI of subscriber equipment place divides into groups is near exhausting; Network terminal can be sent the heavy assignment messages (805) of C-RNTI to subscriber equipment so, gives new C-RNTI in non-C-RNTI packet space of user equipment allocation.
The present invention gives the hardware of the required base station equipment of CRNTI distribution method that realization proposes and realizes block diagram, and is as shown in Figure 9:
The receiving system 901 of base station receives the random access leader sequence that subscriber equipment sent; Be input to random access leader sequence detector 902; Confirm the random access leader sequence that subscriber equipment sends; Or the combination of random access leader sequence and emission subframe (or frame), or the combination of the frequency domain sequence number of random access leader sequence, emission subframe (or frame) and RACH, and testing result sent to controller 903.Controller 903 will be with reference to random access leader sequence; Or the combination of random access leader sequence and emission subframe (or frame), or the combination of the frequency domain sequence number of random access leader sequence, emission subframe (or frame) and RACH, with the corresponding relation 904 of C-RNTI grouping; Confirm C-RNTI to this subscriber equipment distributed; And determined C-RNTI passed to control information maker 905, produce the control messages of distributing C-RNTI, and send to subscriber equipment through dispensing device 906.
Embodiment
For the inventive method is described, provide the embodiment of C-RNTI distribution method proposed by the invention below.
In given embodiment, suppose in the C-RNTI space of system always to have 2
16=65536 C-RNTI, the system that is to say sends a C-RNTI assignment to subscriber equipment needs 16 bits to indicate.For example, if according to prior art, certain subscriber equipment is given in network terminal transmission " 0000000000000101 " in the signaling that C-RNTI distributes, and means that network terminal is that 5 C-RNTI has distributed to this subscriber equipment to the sequence number among 65526 C-RNTI so.
At first, provided the embodiment of first kind of implementation method of the C-RNTI distribution method that the present invention proposes.
Embodiment 1:
Here provide following hypothesis:
The every 10ms of targeting sequencing of-access at random sends once at interval;
-in every 10ms interval, there are 4 sub-frame can send random access leader sequence;
-in each subframe, there is 1 RACH (frequency range of 1.25MHz bandwidth) can send random access leader sequence;
-system can with random access leader sequence one have 64, wherein have 32 non-synchronized random that are used to initiate need C-RNTI to distribute to insert request (subscriber equipment does not have C-RNTI).
According to above-mentioned hypothesis, can divide into groups as follows for the C-RNTI space of system according to the method that the present invention proposes:
As above can find out shown in the table; 65536 C-RNTI in the C-RNTI allocation space; The different random access leader sequences and the selected different transmission subframe of sending according to subscriber equipment have been divided into 32 * 4=128 group, in each group 65536/128=512 C-RNTI are arranged.
If base station and subscriber equipment all known after the above-mentioned C-RNTI packet mode, just can carry out the distribution of C-RNTI and discerned:
The base station is after the random access leader sequence that has detected the subscriber equipment transmission; Just can according to the selected random access leader sequence of subscriber equipment with and the subframe of sending; Can confirm and to divide into groups to the C-RNTI of its distribution according to the relation of the grouping in the table 5; Just can, this C-RNTI select certain still unappropriated C-RNTI in dividing into groups afterwards; And, in giving user equipment allocation C-RNTI signaling, send to subscriber equipment, thereby realized indicating C-RNTI to distribute with 9 bits with corresponding 9 bits of the sequence number of this C-RNTI in grouping; This is with respect to indicating C-RNTI to distribute with 16 traditional bits, the reducing of signaling burden of 7 bits arranged.
And subscriber equipment is after having sent random access leader sequence; Just can and send subframe according to its random access leader sequence; Can confirm that according to the relation of the grouping in the table 5 corresponding C-RNTI divides into groups; After subscriber equipment has received that the 9 bit sequence numbers of sending in the user equipment allocation C-RNTI signaling are being given in the base station, just can identify the C-RNTI of base station to its distribution.
It should be noted that; When network terminal is found approaching the exhausting of C-RNTI in certain C-RNTI grouping; Can send the heavy assignment signalling of C-RNTI to some user who has been linked in the network, redistributing some relatively more idle grouping to it is that C-RNTI uses the C-RNTI in the less grouping in it.
Embodiment 2:
Here provide following hypothesis:
The every 10ms of targeting sequencing of-access at random sends once at interval;
-in every 10ms interval, there are 4 sub-frame can send random access leader sequence;
-in each subframe, there is 1 RACH (frequency range of 1.25MHz bandwidth) can send random access leader sequence;
-system can with random access leader sequence one have 64, wherein have 32 non-synchronized random that are used to initiate need C-RNTI to distribute to insert request (subscriber equipment does not have C-RNTI).
According to above-mentioned hypothesis, the C-RNTI space that can provide system according to the method that the present invention proposes is divided into groups as shown in table 5.
Can find out from table 5; 65536 C-RNTI in the C-RNTI allocation space; The different random access leader sequences and the selected different transmission subframe of sending according to subscriber equipment have been divided into 32 * 4=128 group, in each group 65536/128=512 C-RNTI are arranged.
If base station and subscriber equipment all known after the above-mentioned C-RNTI packet mode, just can carry out the distribution of C-RNTI and discerned.
At first subscriber equipment sends random access leader sequence to the base station, and the base station receives the random access leader sequence that subscriber equipment sends afterwards.According to the inventive method, the grouping that the random access leader sequence that subscriber equipment sends correspondence a CRNTI.With table 5 is example; The combination of the random access leader sequence that subscriber equipment sends and the subframe of transmission a CRNTI with correspondence and is divided into groups; After the base station has detected the random access leader sequence of subscriber equipment transmission; Just can according to the selected random access leader sequence of subscriber equipment with and the subframe of sending; Can confirm and to divide into groups to the C-RNTI of its distribution according to the relation of the grouping in the table 5; Just can in this C-RNTI divides into groups, select certain still unappropriated C-RNTI afterwards, and in the response message of the random access leader sequence of giving subscriber equipment, send the assignation information of CRNTI, the CRNTI that this CRNTI assignation information will indicate the base station to distribute with random access leader sequence identifier information combination together.Like this, will comprise following content in the response message of random access leader sequence:
Ascending resource assignation (UL resource assignment, UL RA), regularly adjustment (TimingAdjustment; TA); The random access leader sequence identifier (Random Access preambleID, RA_ID), and with RA_ID make up together the indication CRNTI information.
In the present embodiment; The information that described RA_ID makes up indication CRNTI together can be the sequence number of CRNTI in CRNTI divides into groups of being distributed, and wherein the CRNTI grouping is the determined CRNTI grouping of combination of the transmission subframe of RA_ID and random access leader sequence in the present embodiment.
In the present embodiment, only comprise 29=512 CRNTI during the pairing CRNTI of random access leader sequence divides into groups, the therefore described sequence number of CRNTI in CRNTI divides into groups to user equipment allocation is 9 binary number.
With corresponding 9 bits of the sequence number of this C-RNTI in grouping; In giving user equipment allocation C-RNTI signaling, send to subscriber equipment; Thereby realized indicating C-RNTI to distribute with 9 bits; This is with respect to indicating C-RNTI to distribute with 16 traditional bits, the reducing of signaling burden of 7 bits arranged.
And subscriber equipment just can and send subframe according to its random access leader sequence after having sent random access leader sequence, can confirm that according to the relation of the grouping in the table 5 corresponding C-RNTI divides into groups.Afterwards, subscriber equipment receives the response message of the random access leader sequence that sends the base station, detects the RA_ID that whether comprises its transmission in this message.If detected the RA_ID of its transmission, just can confirm to comprise in this response message CRNTI assignation information to this user equipment allocation.Afterwards subscriber equipment will base stations detected in this message to the assignation information of the CRNTI of its transmission, and utilize the identifier of this information and its random access leader sequence that is sent to determine the CRNTI of base station together to its distribution.Specifically be exactly; The grouping that subscriber equipment is determined CRNTI according to the combination and the corresponding relation in the table 5 of the transmission subframe of RA_ID and targeting sequencing; The sequence number (9 bit) of CRNTI in CRNTI divides into groups of sending in the response message of random access leader sequence according to the base station more just can make up and determine the CRNTI of base station to its distribution.
It should be noted that; When network terminal is found approaching the exhausting of C-RNTI in certain C-RNTI grouping; Can send the heavy assignment signalling of C-RNTI to some user who has been linked in the network, redistributing some relatively more idle grouping to it is that C-RNTI uses the C-RNTI in the less grouping in it.
Embodiment 3:
Here provide following hypothesis:
-system can with random access leader sequence one have 64.
According to above-mentioned hypothesis, the C-RNTI space that can provide system according to the method that the present invention proposes is divided into groups as shown in table 7.
The packet mode in the C-RNTI space among table 7 embodiment 3
Can find out from table 7,65536 C-RNTI in the C-RNTI allocation space, the different random access leader sequence that sends according to subscriber equipment has been divided into 64 groups, in each group 65536/64=1024 C-RNTI is arranged.
If base station and subscriber equipment all known after the above-mentioned C-RNTI packet mode, just can carry out the distribution of C-RNTI and discerned.
At first subscriber equipment sends random access leader sequence to the base station, and the base station receives the random access leader sequence that subscriber equipment sends afterwards.According to the inventive method, the grouping that the random access leader sequence that subscriber equipment sends correspondence a CRNTI.With table 7 is example; The random access leader sequence that subscriber equipment sends a CRNTI with correspondence and is divided into groups; After the base station has detected the random access leader sequence of subscriber equipment transmission; Just can confirm and to divide into groups to the C-RNTI of its distribution according to the relation of the grouping in the table 7, just can in this C-RNTI divides into groups, select certain still unappropriated C-RNTI afterwards according to the selected random access leader sequence of subscriber equipment; And in the response message of the random access leader sequence of giving subscriber equipment, send the assignation information of CRNTI, the CRNTI that this CRNTI assignation information will indicate the base station to distribute with random access leader sequence identifier information combination together.Like this, will comprise following content in the response message of random access leader sequence:
Ascending resource assignation (UL resource assignment, UL RA), regularly adjustment (TimingAdjustment; TA); The random access leader sequence identifier (Random Access preambleID, RA_ID), and with RA_ID make up together the indication CRNTI information.
In the present embodiment, the information that described RA_ID makes up indication CRNTI together can be the sequence number of CRNTI in CRNTI divides into groups of being distributed, and wherein the CRNTI grouping is that the determined CRNTI of RA_ID divides into groups in the present embodiment.
In the present embodiment, the pairing CRNTI of random access leader sequence only comprises 2 in dividing into groups
10=1024 CRNTI, the therefore described sequence number of CRNTI in CRNTI divides into groups to user equipment allocation is 10 binary number.
The recognition sequence of supposing the random access leader sequence that subscriber equipment sends to the base station number is 1, because random access leader sequence has 2 in the present embodiment
6=64, number can convert this recognition sequence into 6 bits " 000001 " so, that is to say the identifier RA_ID=" 000001 " of the random access leader sequence that subscriber equipment sends.
After the base station has received the random access leader sequence that subscriber equipment sends, just determine the CRNTI that distributes to this subscriber equipment and should divide into groups in 1 at CRNTI.Suppose that the base station dividing into groups a kind to have selected C-RNTI 1022*64+1 (C-RNTI 65409) to distribute to this subscriber equipment, the base station will comprise following content in the accidental access response message that sends to subscriber equipment so:
-ascending resource assignation (UL resource assignment, UL RA);
-regularly adjustment (Timing Adjustment, TA);
-selected the sequence number of the CRNTI that gives user equipment allocation in CRNTI divides into groups, i.e. " 1111111110 " (sequence number 1022);
-random access leader sequence identifier (Random Access preamble ID, RA_ID), i.e. " 000001 " (random sequence identifier 1).
Like this; By the sequence number " 1111111110 " of indicated CRNTI in CRNTI divides into groups preceding 10, and the identifier " 000001 " of random access leader sequence just formed the CRNTI that will distribute " 1111111110000001 " (CRNTI 65409) jointly as back 6 of 16 CRNTI as 16 CRNTI.
It should be noted that the foregoing description is back 6 bits of representing CRNTI with RA_ID, and the sequence number in the CRNTI grouping is represented preceding 10 bits of CRNTI.Utilize similar method, provide the different packets mode, also can be with preceding 6 bits of representing CRNTI with RA_ID, and the sequence number of CRNTI in dividing into groups represented back 10 bits of CRNTI.
And subscriber equipment just can confirm that according to the relation of the grouping in the table 7 corresponding C-RNTI divides into groups according to the random access leader sequence of its transmission after having sent random access leader sequence.Afterwards, subscriber equipment receives the response message of the random access leader sequence that sends the base station, detects the RA_ID that whether comprises its transmission in this message.If detected the RA_ID of its transmission, just can confirm to comprise in this response message CRNTI assignation information to this user equipment allocation.Afterwards subscriber equipment will base stations detected in this message to the assignation information of the CRNTI of its transmission, and utilize the identifier of this information and its random access leader sequence that is sent to determine the CRNTI of base station together to its distribution.Specifically be exactly; The grouping that subscriber equipment is determined CRNTI according to the combination and the corresponding relation in the table 7 of the transmission subframe of RA_ID and targeting sequencing; The sequence number (10 bit) of CRNTI in CRNTI divides into groups of sending in the response message of random access leader sequence according to the base station more just can make up and determine the CRNTI of base station to its distribution.
It should be noted that; When network terminal is found approaching the exhausting of C-RNTI in certain C-RNTI grouping; Can send the heavy assignment signalling of C-RNTI to some user who has been linked in the network, redistributing some relatively more idle grouping to it is that C-RNTI uses the C-RNTI in the less grouping in it.
Secondly, give the embodiment of second kind of implementation method of the C-RNTI distribution method that the present invention proposes.
Embodiment 4:
Here provide following hypothesis:
The every 10ms of targeting sequencing of-access at random sends once at interval;
-in every 10ms interval, there are 4 sub-frame can send random access leader sequence;
-in each subframe, there is 1 RACH (frequency range of 1.25MHz bandwidth) can send random access leader sequence;
-system can with random access leader sequence one have 64, wherein have 32 non-synchronized random that are used to initiate need C-RNTI to distribute to insert request (subscriber equipment does not have C-RNTI).
According to above-mentioned hypothesis; Can at first can be in comprising 65536 C-RNTI gross spaces according to the method that the present invention proposes; Select from sequence number be 1 to 1024 C-RNTI as special C-RNTI allocation space, the C-RNTI in this space is the C-RNTI that can use after accomplishing with random access procedure in the random access procedure.Just can divide into groups as follows afterwards to this special C-RNTI space:
As above table can be found out; 1024 C-RNTI in the special C-RNTI allocation space; The different random access leader sequences and the selected different transmission subframe of sending according to subscriber equipment have been divided into 32 * 4=128 group, in each group 1024/128=8 C-RNTI are arranged.
If base station and subscriber equipment all known after the above-mentioned C-RNTI packet mode, just can carry out the distribution of C-RNTI and discerned:
The base station is after the random access leader sequence that has detected the subscriber equipment transmission; Just can according to the selected random access leader sequence of subscriber equipment with and the subframe of sending; Can confirm and to divide into groups to the C-RNTI of its distribution according to the relation of the grouping in the table 6; Just can in this C-RNTI divides into groups, select certain still unappropriated C-RNTI afterwards, in the response message of random access leader sequence, send to subscriber equipment.
In the present embodiment; This C-RNTI passes to subscriber equipment in the control channel of layer 1/ layer 2 (L1/L2); The sign of the L1/L2 control channel that this C-RNTI had both sent to subscriber equipment as subscriber equipment identifier (UE ID), the C-RNTI that given this user equipment allocation simultaneously again.
The C-RNTI that is sent can do XOR (XOR) operation with the CRC position, then transmission (mask CRC) together.If the C-RNTI and the CRC mask that send transmit in the L1/L2 control channel together, the form of random access leader sequence response message so is shown in figure 10.To comprise in the response message of the targeting sequencing at random that in the L1/L2 control channel, transmits:
-ascending resource assignation;
-regularly adjustment;
The mask bit of-C-RNTI and cyclic redundancy bit;
-other.
And subscriber equipment is after having sent random access leader sequence; Just can and send subframe according to its random access leader sequence; Can confirm that according to the relation of the grouping in the table 6 corresponding C-RNTI divides into groups; After subscriber equipment has been received the response message of the targeting sequencing at random that send the base station; Will make targeting sequencing response message at random successively of 8 C-RNTI being comprised in the determined grouping and separate mask and do CRC check, thereby identify the C-RNTI that in this response message, transmits, promptly obtain the C-RNTI of base station to its distribution.
It should be noted that; When network terminal is found approaching the exhausting of C-RNTI in certain C-RNTI grouping; Can send the heavy assignment signalling of C-RNTI to some user who has been linked in the network; Redistribute the C-RNTI in the non-C-RNTI packet space to it, thereby discharge the C-RNTI in the original special space that uses, exhaust with what the C-RNTI that avoids some grouping in the C-RNTI special space distributed.
Provide the hardware that base station realization C-RNTI distributes in the present embodiment below and realize block diagram, shown in figure 11.
At first the base station is through 1101 antennas; 1102 moulds/transformation of variables receives the random access leader sequence that subscriber equipment sends; And in 1103 random access leader sequence detectors, detect the random access leader sequence that subscriber equipment sends, and send it to 1104 controllers.
In 1105 random access leader sequence corresponding relation modules, will store random access leader sequence, send subframe and the RACH of transmission and the grouping corresponding relation of C-RNTI.The random access leader sequence that subscriber equipment sent has been confirmed in the base station, sends after the RACH of subframe and transmission, and controller 1104 will be according to the random access leader sequence of storing in the 1105 random access leader sequence corresponding relation modules; Send subframe and the RACH of transmission and the grouping corresponding relation of C-RNTI, confirm give the C-RNTI of user equipment allocation to divide into groups, and in grouping, select appropriate C-RNTI assignment; And this C-RNTI assignation information is passed to 1107 control information generators generate the control information that C-RNTI distributes, and through dispensing device, i.e. 1108 chnnel codings/interleaving block; 1109 rate-matched modules; 1110 modulation modules, 1111 control channel mapping blocks, 1112OFDM modulation module; 1113 add cyclic prefix module; 1114 steering D/A conversion modules, 1115 radio frequency sending set modules and 1101 antennas send to subscriber equipment.
Claims (14)
1. the method for a base station assigns cell-radio network temporary identifier C-RNTI comprises step:
A) subscriber equipment sends random access leader sequence to the base station;
B) response message of random access leader sequence is sent to subscriber equipment in the base station, and this response message comprises: the assignment information of ascending resource, and timing adjustment information, and make up the information of indication C-RNTI together with the random access leader sequence identifier;
C) subscriber equipment will send the message of L3 to network terminal;
D) network terminal can be sent the response of L3 message to subscriber equipment.
2. method according to claim 1 is characterized in that step b), and the information that said and random access leader sequence identifier makes up indication C-RNTI together is the sequence number of C-RNTI in specific C-RNTI divides into groups of being distributed.
3. method according to claim 1 is characterized in that step b), and said base station can also comprise the identifier of random access leader sequence to the response message of subscriber equipment transmission random access leader sequence.
4. method according to claim 2 is characterized in that the packet mode that said C-RNTI divides into groups is to be divided into groups as the C-RNTI packet space in whole C-RNTI space.
5. method according to claim 2 is characterized in that the packet mode that said C-RNTI divides into groups is that a sub-set in whole C-RNTI space is divided into groups as the C-RNTI packet space.
6. method according to claim 2 is characterized in that packet mode that said C-RNTI divides into groups is based on random access leader sequence the C-RNTI packet space is divided into groups.
7. method according to claim 2 is characterized in that said specific C-RNTI is grouped into the corresponding C-RNTI of the received random access leader sequence in base station and divides into groups.
8. method according to claim 2 is characterized in that the combination that packet mode that said C-RNTI divides into groups is based on the transmission subframe of random access leader sequence and random access leader sequence divides into groups.
9. method according to claim 2 is characterized in that said specific C-RNTI is grouped into the corresponding C-RNTI grouping of combination of the transmission subframe of received random access leader sequence in base station and random access leader sequence.
10. method according to claim 1 is characterized in that packet mode that said C-RNTI divides into groups is based on the transmission subframe of random access leader sequence, random access leader sequence and the combination of RACH is divided into groups.
11. method according to claim 2 is characterized in that said specific C-RNTI is grouped into the transmission subframe of the received random access leader sequence in base station, random access leader sequence and the corresponding C-RNTI of combination of RACH divides into groups.
12. method according to claim 1 is characterized in that step b), the response message of the random access leader sequence of said base station transmits transmits in the L1/L2 control channel.
13. method according to claim 1 is characterized in that step b), the response message of the random access leader sequence of said base station transmits transmits in descending shared data channel.
14. a base station equipment that is used to realize cell-radio network temporary identifier C-RNTI distribution comprises antenna, adds cyclic prefix module, the OFDM modulation module, and modulation module, the rate-matched module, chnnel coding/interleaving block, said base station equipment also comprises:
A) random access leader sequence detector is used for detecting the random access leader sequence that subscriber equipment sends, and identification is sent subframe and sent RACH;
B) controller; Be used for according to the C-RNTI grouping of the detected random access leader sequence of random access leader sequence detector, transmission subframe and transmission RACH with reference to the definite random access leader sequence response of being sent of the grouping corresponding relation of confirming in the C-RNTI grouping corresponding relation module; And in grouping, select suitable C-RNTI, pass to the control information maker afterwards and generate the control information that C-RNTI distributes;
C) dispensing device is used to send the control information that C-RNTI distributes.
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| JP5169442B2 (en) * | 2008-04-25 | 2013-03-27 | 富士通株式会社 | Radio base station, mobile station, and communication method |
| CN101610581B (en) * | 2008-06-17 | 2011-05-11 | 大唐移动通信设备有限公司 | Terminal identifier distribution method and communication system |
| CN101742682B (en) * | 2008-11-12 | 2013-03-27 | 中兴通讯股份有限公司 | Random access method between terminal and base station in LTE system |
| CN101754410B (en) * | 2008-12-19 | 2012-09-05 | 华为技术有限公司 | Network access method and device |
| WO2010115299A1 (en) * | 2009-04-07 | 2010-10-14 | 深圳华为通信技术有限公司 | Random access method and the device thereof |
| CN102905295B (en) * | 2009-04-22 | 2014-11-12 | 电信科学技术研究院 | Method and device for regulating preamble sequence numbers |
| CN101909355A (en) * | 2009-06-02 | 2010-12-08 | 中国移动通信集团公司 | Method and equipment for allocating cell radio network temporary identifier |
| CN101998550B (en) * | 2009-08-11 | 2014-01-29 | 电信科学技术研究院 | Method and device for assigning RNTI (Radio Network Temporary Identifier) in carrier aggregation system |
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| WO2014169415A1 (en) * | 2013-04-15 | 2014-10-23 | 华为技术有限公司 | Data transmission method and apparatus, network-side device and terminal |
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