CN103841645B - A kind of method that user equipment is distinguished in wireless communication system - Google Patents
A kind of method that user equipment is distinguished in wireless communication system Download PDFInfo
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- CN103841645B CN103841645B CN201210483415.XA CN201210483415A CN103841645B CN 103841645 B CN103841645 B CN 103841645B CN 201210483415 A CN201210483415 A CN 201210483415A CN 103841645 B CN103841645 B CN 103841645B
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- rnti
- user equipment
- frequency
- base station
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Abstract
This application discloses a kind of method that user equipment is distinguished in wireless communication system, including：Base station obtains the radio network temporary identifier RNTI of the frequency call number and the user equipment of the resident frequency of user equipment；Base station media access control MAC layer calculates the cell-radio network temporary identifier C RNTI of the user equipment according to the frequency call number and RNTI, and base station carries out physical layer process using the C RNTI；RNTI is notified the user equipment by base station；User equipment calculates the C RNTI of the user equipment according to the RNTI of the frequency call number and the user equipment of its resident frequency, and user equipment carries out physical layer process using the C RNTI.By applying technical scheme, it is ensured that in cell, the mark of each user equipment is unique.
Description
Technical field
The application distinguishes user equipment (UE) in being related to wireless communication technology field, more particularly to a kind of wireless communication system
Method.
Background technology
A kind of schematic diagram of the wireless communication system of employing carrier aggregation technology is as shown in figure 1, the wireless communication system is accounted for
Discontinuous spectral bandwidth is used, each frequency domain is defined as a frequency for the physical channel of 25kHz bandwidth, and the number of frequency is most
ForIt is individual, in the planning of existing private network,Each frequency adopts OFDM (OFDM) technology, owns
Discontinuous frequency condenses together, and system is done United Dispatching and distributes to user equipment, constitutes this with carrier aggregation characteristic
Communication system.
When user equipment sends accidental access signal, UE selects a random access lead code (preamble) to send out
Physical Random Access Channel (PRACH) information is sent, the preamble codes determine the resident frequency of user equipment.Ordinary circumstance
Under, user equipment works in resident frequency.When there is fast dispatch demand, then jump to and work on other frequencies.
The length of radio network temporary identifier (RNTI) determines the maximum user equipment that can be resident on a frequency
Number.In order to reduce the bit number of the RNTI of air interface transmission, the RNTI on a frequency falls below 6bit from 16 bits (bit), this
The user device quantity that can be actually resident on one frequency of sample up to 64.
WhenWhen, default situations next one cell can be resident 36*37=1332 user equipment, maximum resident
64*37=2368 user equipment can be resident in the case of user equipment.
The way that same cell different user devices are distinguished in prior art is：It is common by its working frequency points and RNTI
Determine the mark of a user equipment.I.e. when the working frequency points of two user equipmenies are identical, can be with area according to the difference of RNTI
The different user devices divided on same frequency；When the working frequency points difference of two user equipmenies, according to different working frequency points
Different user equipmenies, i.e. cell-radio network temporary identifier (C-RNTI) can be distinguished to enter by RNTI equal to RNTI
The corresponding physical layer process of row.
Wireless communication system supports flexible fast scheduling mechanism, when system passes through Physical Downlink Control Channel (PDCCH)
Notifying user equipment A fast dispatch on frequency 1, after user equipment A receives schedule information, is operated on frequency 1, and passes through
PUCCH feedback ACK information.Yet with link exist certain bit error rate, particularly link-quality it is not good when be possible to occur
ENodeB is not properly received the situation of ACK information.In this case, eNodeB thinks that the frequency 1 is idle, and eNodeB connects
In user equipment B fast dispatch to frequency 1, now, user equipment A and user equipment B is operated on frequency 1 simultaneously, and
ENodeB thinks that only user equipment B is operated on frequency 1.Therefore Downlink Control Information is sent according to the configuration of user equipment B
And business information.
If according to the method for distinguishing user equipment of the prior art, i.e., together decided on by working frequency points and RNTI
The identity of one user equipment, after fast dispatch, user equipment A and user equipment B are operated in identical working frequency points, due to
The interim RNTI distributed during fast dispatch may be identical, therefore causes user equipment A identical with the mark of user equipment B, two
User equipment can proper reception of Downlink Control Information and downlink business information, and two user equipmenies are according to the letter for receiving
Breath carries out operating the confusion that can cause system.
The content of the invention
This application provides a kind of method that user equipment is distinguished in wireless communication system, it is ensured that each use in cell
The mark of family equipment is unique.
The method that user equipment is distinguished in a kind of wireless communication system that the embodiment of the present application is provided, including：
Base station obtains the resident frequency call number of frequency of user equipment and the wireless network of the user equipment is recognized temporarily
Number RNTI；
Base station media access control MAC layer calculates the cell of the user equipment according to the frequency call number and RNTI
Radio network temporary identifier C-RNTI, base station carry out physical layer process using the C-RNTI；RNTI is notified described by base station
User equipment；
User equipment calculates the user according to the RNTI of the frequency call number and the user equipment of its resident frequency
The C-RNTI of equipment, user equipment carry out physical layer process using the C-RNTI.
It is preferred that when base station carries out fast dispatch to user equipment, the C-RNTI of the user equipment keeps constant.
It is preferred that the length of the RNTI is 6 bits.
It is preferred that the mode of the C-RNTI for calculating the user equipment according to the frequency call number and RNTI is：C-
RNTI=(PRBIndex+2) × 26+ RNTI, wherein, C-RNTI represents cell-radio network temporary identifier, and length is 15 ratios
Spy, PRBIndex represent the frequency call number of the resident frequency of user equipment, and span 0 to 479, length are 9 bits；RNTI takes
Value scope 0 to 61.
As can be seen from the above technical solutions, ID C-RNTI is resident the frequency call number of frequency and is eated dishes without rice or wine by user
The RNTI of transmission thereby may be ensured that the mark of each user equipment cell Nei is unique, it is to avoid due to link matter uniquely determining
Measure not good and bring system perturbations.
Description of the drawings
Fig. 1 is a kind of schematic diagram of the wireless communication system of employing carrier aggregation technology；
The method flow diagram of user equipment is distinguished in a kind of wireless communication system that Fig. 2 is provided for the application.
Specific embodiment
This application provides a kind of method that user equipment is distinguished in wireless communication system, as shown in Fig. 2 including following step
Suddenly：
Step 201：Base station obtains the RNTI of the frequency call number and the user equipment of the resident frequency of user equipment；
Step 202：Base station MAC layer calculates the C-RNTI of the user equipment according to the frequency call number and RNTI,
Base station carries out physical layer process using the C-RNTI, and the RNTI is notified the user equipment by base station；
Step 203：User equipment is calculated according to the RNTI of the frequency call number and the user equipment of its resident frequency
The C-RNTI of the user equipment, user equipment carry out physical layer process using the C-RNTI.
When base station carries out fast dispatch to user equipment, the C-RNTI of the user equipment keeps constant.
The length of the RNTI is 6 bits.
To make know-why, feature and the technique effect of technical scheme clearer, below in conjunction with concrete reality
Apply example to be described in detail technical scheme.
When system passes through PDCCH notifying user equipments A fast dispatch on frequency 1, user equipment A receives schedule information
Afterwards, it is switched in working frequency points 1, and passes through PUCCH feedback ACK information.There is certain bit error rate yet with link, therefore
ENodeB is not properly received ACK information, and eNodeB thinks that frequency 1 is idle.ENodeB is then user equipment B fast dispatch
To on frequency 1, now, user equipment A and user equipment B is operated on frequency 1 simultaneously, and eNodeB thinks only user equipment
B is operated on frequency 1.Therefore Downlink Control Information and business information are sent according to the configuration of user equipment B.
According to the method that the application is provided, it is ensured that user equipment A is different with the C-RNTI of user equipment B, by C-
Carrying out corresponding physical layer process, user equipment A cannot correctly parse the control information of eNodeB transmissions and business letter to RNTI
Breath, ultimately results in A and thinks link failure and exit the working frequency points, return to its resident frequency.B can then be properly received.Solve
The problem of system perturbations.
The embodiment of the present application provides a kind of specific embodiment of determination C-RNTI：
C-RNTI=(PRBIndex+2) × 26+ RNTI, wherein, C-RNTI represents cell-radio network temporary identifier,
Length is 15 bits, and PRBIndex represents the frequency call number of the resident frequency of user equipment, and span 0 to 479, length are 9
Bit；RNTI length be 6 bits, span 0 to 61.
The foregoing is only the preferred embodiment of the application, not to limit the protection domain of the application, it is all
Within the spirit and principle of technical scheme, any modification, equivalent substitution and improvements done etc. should be included in this Shen
Within the scope of please protecting.
Claims (3)
1. a kind of method that user equipment is distinguished in wireless communication system, it is characterised in that include：
Base station obtains the radio network temporary identifier of the frequency call number and the user equipment of the resident frequency of user equipment
RNTI；
Base station media access control MAC layer is wireless according to the cell that the frequency call number and RNTI calculate the user equipment
Network temporary identifier C-RNTI, base station carries out physical layer process using the C-RNTI；RNTI is notified the user by base station
Equipment；
User equipment calculates the user equipment according to the RNTI of the frequency call number and the user equipment of its resident frequency
C-RNTI, user equipment carries out physical layer process using the C-RNTI；
The mode of the C-RNTI for calculating the user equipment according to the frequency call number and RNTI is：C-RNTI=
(PRBIndex+2)×26+ RNTI, wherein, C-RNTI represents cell-radio network temporary identifier, and length is 15 bits,
PRBIndex represents the frequency call number of the resident frequency of user equipment, and span 0 to 479, length are 9 bits；RNTI values
Scope 0 to 61.
2. method according to claim 1, it is characterised in that when base station carries out fast dispatch to user equipment, the use
The C-RNTI of family equipment keeps constant.
3. method according to claim 1, it is characterised in that the length of the RNTI is 6 bits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483415.XA CN103841645B (en) | 2012-11-23 | 2012-11-23 | A kind of method that user equipment is distinguished in wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483415.XA CN103841645B (en) | 2012-11-23 | 2012-11-23 | A kind of method that user equipment is distinguished in wireless communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103841645A CN103841645A (en) | 2014-06-04 |
| CN103841645B true CN103841645B (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210483415.XA Expired - Fee Related CN103841645B (en) | 2012-11-23 | 2012-11-23 | A kind of method that user equipment is distinguished in wireless communication system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559910A (en) * | 2015-09-29 | 2017-04-05 | 普天信息技术有限公司 | The method of different user, apparatus and system in a kind of distinguishing cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2141852A1 (en) * | 2008-07-03 | 2010-01-06 | LG Electronics Inc. | Method for processing NDI in random access procedure and a method for transmitting and receiving a signal using the same |
| CN101841913A (en) * | 2009-03-16 | 2010-09-22 | 大唐移动通信设备有限公司 | Method and base station for determining UE-monitored downlink member carrier |
| CN101998550A (en) * | 2009-08-11 | 2011-03-30 | 大唐移动通信设备有限公司 | Method and device for assigning RNTI (Radio Network Temporary Identifier) in carrier aggregation system |
| CN102131276A (en) * | 2010-01-12 | 2011-07-20 | 中国移动通信集团公司 | Method for sending and receiving system information of co-station multiple cells and evolution node base (eNB) |
| CN102333341A (en) * | 2010-07-13 | 2012-01-25 | 华为技术有限公司 | Data transmission method, user equipment and base station |
-
2012
- 2012-11-23 CN CN201210483415.XA patent/CN103841645B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2141852A1 (en) * | 2008-07-03 | 2010-01-06 | LG Electronics Inc. | Method for processing NDI in random access procedure and a method for transmitting and receiving a signal using the same |
| CN101841913A (en) * | 2009-03-16 | 2010-09-22 | 大唐移动通信设备有限公司 | Method and base station for determining UE-monitored downlink member carrier |
| CN101998550A (en) * | 2009-08-11 | 2011-03-30 | 大唐移动通信设备有限公司 | Method and device for assigning RNTI (Radio Network Temporary Identifier) in carrier aggregation system |
| CN102131276A (en) * | 2010-01-12 | 2011-07-20 | 中国移动通信集团公司 | Method for sending and receiving system information of co-station multiple cells and evolution node base (eNB) |
| CN102333341A (en) * | 2010-07-13 | 2012-01-25 | 华为技术有限公司 | Data transmission method, user equipment and base station |
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| CN103841645A (en) | 2014-06-04 |
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Granted publication date: 20170329 Termination date: 20211123 |