CN106658429B - A kind of group for distributing cluster group exhales the method and system of RNTI - Google Patents
A kind of group for distributing cluster group exhales the method and system of RNTI Download PDFInfo
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- CN106658429B CN106658429B CN201510712791.5A CN201510712791A CN106658429B CN 106658429 B CN106658429 B CN 106658429B CN 201510712791 A CN201510712791 A CN 201510712791A CN 106658429 B CN106658429 B CN 106658429B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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Abstract
The present invention relates to the method and systems that field of communication technology more particularly to a kind of group for distributing cluster group exhale RNTI.This method comprises: obtaining the RNTI allocation list of cluster group, the RNTI allocation list, it include: the first RNTI set and the 2nd RNTI set, group's dedicated search space of any one RNTI value instruction in first RNTI set and public search space are there is no resource is Chong Die, and the lap of the resource of the preset kind in group's dedicated search space and public search space that any one RNTI value in the 2nd RNTI set indicates is less than pre-determined threshold；When, there are when unappropriated RNTI value, G-RNTI of the RNTI value as the cluster group being chosen from the first RNTI set in the first RNTI set, otherwise, G-RNTI of the RNTI value as the cluster group is chosen from the 2nd RNTI set.The method that the group of distribution cluster group provided by the invention exhales RNTI, can effectively reduce the probability of PDCCH scheduling collision, and the group speechminute for rising to cluster group matches the efficiency of RNTI.
Description
Technical field
The present invention relates to the method and systems that field of communication technology more particularly to a kind of group for distributing cluster group exhale RNTI.
Background technique
With the rapid development of social economy with the changes in demand of industry customer, there is big bandwidth, high-speed, full IP, height
The broadband the TD-LTE cluster of effect command and control and real-time response ability will lead cluster communication to enter the completely new epoch.Private network broadband
Multimedia cluster technology is combined closely with industrial application, promote TD-LTE broadband cluster communication system constantly improve in the industry and
It is fast-developing.China Communications Standards Association (CCSA) is leading to complete the broadband TD-LTE cluster communication professional standard, this is also state
Interior first professional standard based on 4G technological cluster.
Cluster multi call business is a kind of point-to-multipoint business, plays huge effect in private network communication field.Such as table 1
Shown, the private network cluster standard of CCSA agreement provides cluster group radio network temporary identifier G-RNTI (Group-Radio
Network Tempory Identity) for scrambling the cluster multi call business datum and DCI of dynamic dispatching, semi-continuous scheduling collection
Group radio network temporary identifier SPS G-RNTI (Semi-Persistent Scheduling Group-Radio Network
Tempory Identity) for scrambling the cluster multi call business datum and control information of semi-continuous scheduling.
The purposes of table 1G-RNTI and SPS G-RNTI
For cluster multi call PDCCH search space, in CCSA agreement to base station using cluster multi call PDCCH search space into
Regulation is gone.When it is RRC connected state that group, which exhales the interior called subscriber for having G-RNTI PDCCH blind examination capability class 2, then to the group
The G-RNTI exhaled is dispatched in PDCCH public space.For the first time paging that group is exhaled, base station issues base after clustering paging message
It stands and starts a timer (being set as 300ms), be placed in public space in the G-RNTI that the group is exhaled in the preceding base station of the timer expiry
Scheduling.The timer expiry and endless report and only support public space, and the group search space of base station can be changed to public and group
Group private space, otherwise base station should keep the G-RNTI for exhaling the group to be placed in public space dispatching.In all non-threatening conditions, base station
The G-RNTI that the group is exhaled can be dispatched in PDCCH public space and group's private space.
Public search space is that all terminals are shared in cell, the length of the control channel Elements C CE of public search space
Degree is 16, and number is 0~15, and the CCE set class in the space is 4 and 8.When CCE set class is 4, base station can dispatch 4
A common control information；When CCE set class is 8, it is only capable of 2 common control informations of scheduling.Therefore, public search space
CCE resource is at full stretch, will be all used most of the time.Since G-RNTI numerical value and candidate PDCCH group are dedicated
Search space is related, if calculating if the G-RNTI that cluster group is distributed completely overlapped to public affairs to candidate PDCCH search space
Search space altogether, it may occur that PDCCH resource collision, causing group to be exhaled cannot timely dispatch because that can not send DCI, cluster group
The efficiency of transmission of downlink data is exhaled to decline.
Summary of the invention
In order to dispatch cluster multi call business in time, the present invention provides a kind of groups for distributing cluster group to exhale RNTI's
Method and system.
In a first aspect, the present invention provides a kind of methods that the group for distributing cluster group exhales RNTI, comprising:
Obtain the RNTI allocation list of cluster group, wherein the RNTI allocation list, comprising: the first RNTI set and second
RNTI gathers, group's dedicated search space of any one RNTI value instruction in the first RNTI set and public search space
There is no resource overlapping, group's dedicated search space of any one RNTI value instruction in the 2nd RNTI set is searched with public
The lap of the resource of the preset kind in rope space is no more than pre-determined threshold；
When in the first RNTI set there are when unappropriated RNTI value, from the first RNTI gather in choose
Otherwise G-RNTI of the RNTI value as the cluster group chooses RNTI value as the cluster from the 2nd RNTI set
The G-RNTI of group.
Further, the RNTI allocation list for obtaining cluster group, comprising:
Obtain the alternative RNTI set of the RNTI allocation list, the alternative RNTI set, comprising: provide in preset protocol
RNTI value range in the first RNTI set and the 2nd RNTI set except all RNTI values；
When the business of the cluster group uses the method for semi-continuous scheduling, RNTI is chosen from the alternative RNTI set
It is worth the SPS G-RNTI as the cluster group.
Further, the method also includes:
Determine that each RNTI value exists in the value range of RNTI as defined in preset protocol according to the system configuration parameter of cell
In one radio frames on each downlink subframe corresponding candidate PDCCH the initial position CCE；
RNTI by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space
Value is divided into the first RNTI set；
The initial position CCE that PDCCH is corresponded on the downlink subframe of preset number will be present in public search space
RNTI value be divided into the 2nd RNTI set；
It will gather in the value range of RNTI as defined in preset protocol in the first RNTI set and the 2nd RNTI
All RNTI values in addition are divided into alternative RNTI set；
It generates the RNTI according to the first RNTI set, the 2nd RNTI set and the alternative RNTI set and matches
Set table.
Further, the system configuration parameter according to cell determines in the value range of RNTI as defined in preset protocol
The initial position CCE of each RNTI value corresponding candidate PDCCH on each downlink subframe in a radio frames, comprising:
Determine each RNTI value nRNTIThe CCE of the corresponding No. m candidate PDCCH of each downlink subframe in a radio frames
Initial position Startk,m；
Wherein, Startk,m=L { (Yk+m)mod[NCCE,k/L]}；
Wherein, L is the CCE set class of PDCCH；M=0 ..., M(L)- 1, M(L)To give the time monitored in search space
The number of PDCCH is selected, k is the subframe number in the radio frames, NCCE,kIt is of total CCE in the control area in subframe k
Number, Yk=(A × Yk-1) modD, Y-1=nRNTI≠ 0, A=39827, D=65537；
The initial position CCE by candidate PDCCH corresponding on each downlink subframe is not in public search space
RNTI value is divided into the first RNTI set, comprising:
By Startk,mAll RNTI values not in public search space are divided into the first RNTI set.
Further, which is characterized in that the CCE starting of PDCCH is corresponded on the downlink subframe that preset number will be present
Position includes that the RNTI value in public search space is divided into the 2nd RNTI set, comprising:
Count the Start of each RNTI value except the first RNTI setk,mNumber in public search space
It willThe 2nd RNTI set is divided into no more than the RNTI value of preset value X, whereinFor the number of downlink subframe in a radio frames.
Second aspect, the present invention provides a kind of systems that the group for distributing cluster group exhales RNTI, comprising:
Module is obtained, for obtaining the RNTI allocation list of cluster group, wherein the RNTI allocation list, comprising: the first RNTI
Set is gathered with the 2nd RNTI, group's dedicated search space of any one RNTI value instruction in the first RNTI set and public affairs
Resource overlapping, group's dedicated search sky that any one RNTI value in the 2nd RNTI set indicates is not present in search space altogether
Between with the lap of the resource of the preset kind of public search space be no more than pre-determined threshold；
Choose module, for when in the first RNTI set there are when unappropriated RNTI value, from described first
G-RNTI of the RNTI value as the cluster group is chosen in RNTI set, otherwise, chooses RNTI from the 2nd RNTI set
It is worth the G-RNTI as the cluster group.
Further, the acquisition module, is also used to:
Obtain the alternative RNTI set of the RNTI allocation list, the alternative RNTI set, comprising: provide in preset protocol
RNTI value range in the first RNTI set and the 2nd RNTI set except all RNTI values；
The selection module is also used to when the business of the cluster group uses the method for semi-continuous scheduling, from described standby
It selects and chooses SPS G-RNTI of the RNTI value as the cluster group in RNTI set.
Further, the system also includes: generation module is used for:
RNTI by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space
Value is divided into the first RNTI set；
The initial position CCE that PDCCH is corresponded on the downlink subframe of preset number will be present in public search space
RNTI value be divided into the 2nd RNTI set；
It will gather in the value range of RNTI as defined in preset protocol in the first RNTI set and the 2nd RNTI
All RNTI values in addition are divided into alternative RNTI set；
It generates the RNTI according to the first RNTI set, the 2nd RNTI set and the alternative RNTI set and matches
Set table.
Further, the generation module, is specifically used for:
Determine each RNTI value nRNTIThe CCE of the corresponding No. m candidate PDCCH of each downlink subframe in a radio frames
Initial position Startk,m；
Wherein, Startk,m=L { (Yk+m)mod[NCCE,k/L]}；
Wherein, L is the CCE set class of PDCCH；M=0 ..., M(L)- 1, M(L)To give the time monitored in search space
The number of PDCCH is selected, k is the subframe number in the radio frames, NCCE,kIt is of total CCE in the control area in subframe k
Number, Yk=(A × Yk-1) modD, Y-1=nRNTI≠ 0, A=39827, D=65537；
The initial position CCE by candidate PDCCH corresponding on each downlink subframe is not in public search space
RNTI value is divided into the first RNTI set, comprising:
By Startk,mAll RNTI values not in public search space are divided into the first RNTI set.
Further, the generation module, also particularly useful for:
Count the Start of each RNTI value except the first RNTI setk,mNumber in public search space
It willThe 2nd RNTI set is divided into no more than the RNTI value of preset value X, whereinFor the number of downlink subframe in a radio frames.
The method that the group of distribution cluster group provided by the invention exhales RNTI, by the RNTI allocation list for obtaining cluster group；When
There are when unappropriated RNTI value in the first RNTI set in the RNTI allocation list, selected from the first RNTI set
It takes RNTI value as the G-RNTI of the cluster group, otherwise, is chosen from the 2nd RNTI set in the RNTI allocation list
G-RNTI of the RNTI value as the cluster group.It so, it is possible to efficiently reduce the probability that PDCCH scheduling is collided, preferably protect
Card cluster group business is dispatched in time, and the group speechminute for rising to cluster group matches the efficiency of RNTI.
Detailed description of the invention
Fig. 1 is the flow diagram that the group for the distribution cluster group that first embodiment of the invention provides exhales the method for RNTI；
Fig. 2 is the structural schematic diagram that the group for the distribution cluster group that second embodiment of the invention provides exhales the system of RNTI.
Specific embodiment
With reference to the accompanying drawing, further description of the specific embodiments of the present invention.Following embodiment is only used for more
Technical solution of the present invention is clearly demonstrated, and not intended to limit the protection scope of the present invention.
The first embodiment of the present invention provides a kind of method that the group for distributing cluster group exhales RNTI, as shown in Figure 1, packet
It includes:
Step S1 obtains the RNTI allocation list of cluster group, wherein the RNTI allocation list, comprising: the first RNTI set and
2nd RNTI gathers, group's dedicated search space of any one RNTI value instruction in the first RNTI set and common search
Space is there is no resource overlapping, group's dedicated search space of any one RNTI value instruction in the 2nd RNTI set and public
The lap of the resource of the preset kind of search space is no more than pre-determined threshold altogether；
Step S2, when in the first RNTI set there are when unappropriated RNTI value, from the first RNTI set
Otherwise the middle G-RNTI for choosing RNTI value as the cluster group chooses RNTI value as institute from the 2nd RNTI set
State the G-RNTI of cluster group.
The method that the group of distribution cluster group provided by the invention exhales RNTI, by the RNTI allocation list for obtaining cluster group；When
There are when unappropriated RNTI value in the first RNTI set in the RNTI allocation list, selected from the first RNTI set
It takes RNTI value as the G-RNTI of the cluster group, otherwise, is chosen from the 2nd RNTI set in the RNTI allocation list
G-RNTI of the RNTI value as the cluster group.It so, it is possible to efficiently reduce the probability that PDCCH scheduling is collided, preferably protect
Card cluster group business is dispatched in time, and the group speechminute for rising to cluster group matches the efficiency of RNTI.
In the specific implementation, the step S1 may include:
Obtain the alternative RNTI set of the RNTI allocation list, the alternative RNTI set, comprising: provide in preset protocol
RNTI value range in the first RNTI set and the 2nd RNTI set except all RNTI values；
When the business of the cluster group uses the method for semi-continuous scheduling, RNTI is chosen from the alternative RNTI set
It is worth the SPS G-RNTI as the cluster group.
So can be to avoid when for using the traffic assignments SPS G-RNTI of the cluster group of method for semi-persistently dispatching, it can
The probability for efficiently reducing PDCCH scheduling collision, improves efficiency of transmission.
In the specific implementation, the method can also include:
Determine that each RNTI value exists in the value range of RNTI as defined in preset protocol according to the system configuration parameter of cell
In one radio frames on each downlink subframe corresponding candidate PDCCH the initial position CCE；
RNTI by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space
Value is divided into the first RNTI set；
The initial position CCE that PDCCH is corresponded on the downlink subframe of preset number will be present in public search space
RNTI value be divided into the 2nd RNTI set；
It will gather in the value range of RNTI as defined in preset protocol in the first RNTI set and the 2nd RNTI
All RNTI values in addition are divided into alternative RNTI set；
It generates the RNTI according to the first RNTI set, the 2nd RNTI set and the alternative RNTI set and matches
Set table.
So accurately each RNTI in the value range of RNTI as defined in preset protocol can be classified, generated
RNTI allocation list.Be conducive to improve eNode according to the RNTI allocation list to be that cluster group distributes G-RNTI and SPS G-RNTI's
Efficiency.
In the specific implementation, the system configuration parameter of cell can be system bandwidth, the configuration of system uplink and downlink timeslot, antenna
Port number and cluster multi call business correspond to the configuration information etc. of the CCE set class of PDCCH.
Candidate PDCCH is as shown in table 2 in group's dedicated search space.
Candidate PDCCH in 2 group's dedicated search space of table
Since cluster multi call business is point-to-multipoint business, the user for same group-calling service may be random distribution
In any position of cell, then group exhales the respective channel quality of user, there may be very big differences, in order to guarantee that group is exhaled
The data transmission credibility of business, the CCE set class in usual group's dedicated search space will not be arranged too high.In view of downlink
Group-calling service organizes the channel condition that interior user does not feed back UE itself to eNode B by the way of similar broadcast, therefore eNode
B will be transmitted using CCE set class is semi-statically configured.For example, eNode B can configure the CCE of the used PDCCH of cluster group
Set class recommendation L=4.But specific CCE set class Configuration Values are determined by real network deployment.
Group's dedicated search spaceNo. m interior corresponding CCEs of candidate PDCCH are as follows:
L·{(Yk+m)mod[NCCE,k/L]}+i
Wherein, i=0 ... L-1, m=0 ..., M(L)- 1, M(L)For the number for giving the candidate PDCCH monitored in search space
Mesh.
In the specific implementation, the system configuration parameter according to cell determines the value model of RNTI as defined in preset protocol
The initial position CCE for enclosing interior each RNTI value corresponding candidate PDCCH on each downlink subframe in a radio frames, can wrap
It includes:
Determine each RNTI value nRNTIThe CCE of the corresponding No. m candidate PDCCH of each downlink subframe in a radio frames
Initial position Startk,m；
Wherein, Startk,m=L { (Yk+m)mod[NCCE,k/L]}；
Wherein, L is the CCE set class of PDCCH；M=0 ..., M(L)- 1, M(L)To give the time monitored in search space
The number of PDCCH is selected, k is the subframe number in the radio frames, k=ns/ 2, nsFor the slot index in a radio frames.
NCCE,kIt is the number of total CCE in the control area in subframe k, Yk=(A × Yk-1) modD, Y-1=nRNTI≠
0, A=39827, D=65537；
The initial position CCE by candidate PDCCH corresponding on each downlink subframe is not in public search space
RNTI value is divided into the first RNTI set, comprising:
By Startk,mAll RNTI values not in public search space, i.e. Startk,m> 15 RNTI value is divided into
The first RNTI set.
It so, it is possible to be effectively prevented from and resource collision occur when the group speechminute for cluster group is with RNTI, make communication more
Orderly.
In the specific implementation, the initial position CCE that PDCCH is corresponded on the downlink subframe that preset number will be present includes
RNTI value in public search space is divided into the 2nd RNTI set, may include:
Count the Start of each RNTI value except the first RNTI setk,mNumber in public search spaceCount the Start of each RNTIk,m≤ 15 number；
It willThe 2nd RNTI set is divided into no more than the RNTI value of preset value X, whereinFor the number of downlink subframe in a radio frames.
In this way, different preset value X can be arranged according to the configuration parameter of cell system, so that the RNTI allocation list generated
It is more in line with the demand of user.
In the specific implementation, the preset protocol can be agreement as defined in CCSA, at this time in broadband cluster communication system
The value range of RNTI is as shown in table 3.
The value range of table 3RNTI
In the specific implementation, MME notifies eNode B to carry out cluster multi call foundation, and eNode B can be same according to cell
Configuration parameter, for example, the configuration of system bandwidth, system uplink and downlink timeslot, antenna port number, choose RNTI allocation list, it is cluster group
Group speechminute match RNTI, to guarantee that group service is dispatched in time.In the specific implementation, eNode B can be in signalling of bouquet
G-RNTI parametric distribution is carried when paging Trunking Paging message to UE.In the specific implementation, eNode B can sent
SPS G-RNTI parametric distribution is carried when clustered paging Trunking Paging message to UE, can also be used for config set sending
SPS G-RNTI parametric distribution is carried when the GroupCallConfig message of group business channel TTCH to UE.
Based on identical design, the second embodiment of the present invention provides a kind of system for distributing cluster multi call RNTI, such as
Shown in Fig. 2, comprising:
Module 201 is obtained, for obtaining the RNTI allocation list of cluster group, wherein the RNTI allocation list, comprising: first
RNTI set and the 2nd RNTI gather, group's dedicated search space of any one RNTI value instruction in the first RNTI set
With public search space there is no resource is Chong Die, the group that any one RNTI value in the 2nd RNTI set indicates is dedicated to be searched
The lap of the resource of the preset kind of rope space and public search space is no more than pre-determined threshold；
Choose module 202, for when in the first RNTI set there are when unappropriated RNTI value, from described first
G-RNTI of the RNTI value as the cluster group is chosen in RNTI set, otherwise, chooses RNTI from the 2nd RNTI set
It is worth the G-RNTI as the cluster group.
In the specific implementation, the acquisition module, can be also used for:
Obtain the alternative RNTI set of the RNTI allocation list, the alternative RNTI set, comprising: provide in preset protocol
RNTI value range in the first RNTI set and the 2nd RNTI set except all RNTI values；
The selection module is also used to when the business of the cluster group uses the method for semi-continuous scheduling, from described standby
It selects and chooses SPS G-RNTI of the RNTI value as the cluster group in RNTI set.
In the specific implementation, the system can also include: generation module, be used for:
RNTI by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space
Value is divided into the first RNTI set；
The initial position CCE that PDCCH is corresponded on the downlink subframe of preset number will be present in public search space
RNTI value be divided into the 2nd RNTI set；
It will gather in the value range of RNTI as defined in preset protocol in the first RNTI set and the 2nd RNTI
All RNTI values in addition are divided into alternative RNTI set；
It generates the RNTI according to the first RNTI set, the 2nd RNTI set and the alternative RNTI set and matches
Set table.
In the specific implementation, the generation module can be specifically used for:
Determine each RNTI value nRNTIThe CCE of the corresponding No. m candidate PDCCH of each downlink subframe in a radio frames
Initial position Startk,m；
Wherein, Startk,m=L { (Yk+m)mod[NCCE,k/L]}；
Wherein, L is the CCE set class of PDCCH；M=0 ..., M(L)- 1, M(L)To give the time monitored in search space
The number of PDCCH is selected, k is the subframe number in the radio frames, NCCE,kIt is of total CCE in the control area in subframe k
Number, Yk=(A × Yk-1) modD, Y-1=nRNTI≠ 0, A=39827, D=65537；
The initial position CCE by candidate PDCCH corresponding on each downlink subframe is not in public search space
RNTI value is divided into the first RNTI set, comprising:
By Startk,mAll RNTI values not in public search space are divided into the first RNTI set.
In the specific implementation, the generation module can also be specifically used for:
Count the Start of each RNTI value except the first RNTI setk,mNumber in public search space
It willThe 2nd RNTI set is divided into no more than the RNTI value of preset value X, whereinFor the number of downlink subframe in a radio frames.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of method that the group for distributing cluster group exhales RNTI characterized by comprising
Obtain the RNTI allocation list of cluster group, wherein the RNTI allocation list, comprising: the first RNTI set and the 2nd RNTI collection
It closes, group's dedicated search space of any one RNTI value instruction in the first RNTI set is not present with public search space
Resource is overlapped, group's dedicated search space of any one RNTI value instruction in the 2nd RNTI set and public search space
Preset kind resource lap be no more than pre-determined threshold；
When in the first RNTI set there are when unappropriated RNTI value, the selection RNTI value from the first RNTI set
As the G-RNTI of the cluster group, otherwise, G- of the RNTI value as the cluster group is chosen from the 2nd RNTI set
RNTI。
2. the method according to claim 1, wherein the RNTI allocation list for obtaining cluster group, comprising:
Obtain the alternative RNTI set of the RNTI allocation list, the alternative RNTI set, comprising: as defined in preset protocol
All RNTI values in RNTI value range except the first RNTI set and the 2nd RNTI set；
When the business of the cluster group uses the method for semi-continuous scheduling, RNTI value is chosen from the alternative RNTI set and is made
For the SPS G-RNTI of the cluster group.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
Determine that each RNTI value is at one in the value range of RNTI as defined in preset protocol according to the system configuration parameter of cell
In radio frames on each downlink subframe corresponding candidate PDCCH the initial position CCE；
RNTI value by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space is drawn
Assign to the first RNTI set；
Will be present and correspond to the initial position CCE of PDCCH on the downlink subframe of preset number includes in public search space
RNTI value is divided into the 2nd RNTI set；
By in the value range of RNTI as defined in preset protocol the first RNTI set and the 2nd RNTI set other than
All RNTI values be divided into alternative RNTI set；
The RNTI configuration is generated according to the first RNTI set, the 2nd RNTI set and the alternative RNTI set
Table；
The system configuration parameter according to cell determines that each RNTI value exists in the value range of RNTI as defined in preset protocol
In one radio frames on each downlink subframe corresponding candidate PDCCH the initial position CCE, comprising:
Determine each RNTI value nRNTIThe CCE of the corresponding No. m candidate PDCCH of each downlink subframe in a radio frames is originated
Position Startk,m；
Wherein, Startk,m=L { (Yk+m)mod[NCCE,k/L]}；
Wherein, L is the CCE set class of PDCCH；M=0, M(L)- 1, M(L)To give the time monitored in search space
The number of PDCCH is selected, k is the subframe number in the radio frames, NCCE,kIt is of total CCE in the control area in subframe k
Number, Yk=(A × Yk-1) modD, Y-1=nRNTI≠ 0, A=39827, D=65537；
The RNTI by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space
Value is divided into the first RNTI set, comprising:
By Startk,mAll RNTI values not in public search space are divided into the first RNTI set；
The initial position CCE that PDCCH is corresponded on the downlink subframe that preset number will be present is included in public search space
RNTI value be divided into the 2nd RNTI set, comprising:
Count the Start of each RNTI value except the first RNTI setk,mNumber in public search space
It willThe 2nd RNTI set is divided into no more than the RNTI value of preset value X, wherein For
The number of downlink subframe in one radio frames.
4. a kind of system for distributing cluster multi call RNTI characterized by comprising
Module is obtained, for obtaining the RNTI allocation list of cluster group, wherein the RNTI allocation list, comprising: the first RNTI set
Gather with the 2nd RNTI, group's dedicated search space of any one RNTI value instruction in the first RNTI set is searched with public
Rope space there is no resource overlapping, group's dedicated search space of any one RNTI value instruction in the 2nd RNTI set with
The lap of the resource of the preset kind of public search space is no more than pre-determined threshold；
Choose module, for when in the first RNTI set there are when unappropriated RNTI value, from the first RNTI collection
G-RNTI of the RNTI value as the cluster group is chosen in conjunction, otherwise, chooses the conduct of RNTI value from the 2nd RNTI set
The G-RNTI of the cluster group.
5. system according to claim 4, which is characterized in that the acquisition module is also used to:
Obtain the alternative RNTI set of the RNTI allocation list, the alternative RNTI set, comprising: as defined in preset protocol
All RNTI values in RNTI value range except the first RNTI set and the 2nd RNTI set；
The selection module is also used to when the business of the cluster group uses the method for semi-continuous scheduling, from described alternative
SPS G-RNTI of the RNTI value as the cluster group is chosen in RNTI set.
6. system according to claim 5, which is characterized in that the system also includes: generation module is used for:
RNTI value by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space is drawn
Assign to the first RNTI set；
Will be present and correspond to the initial position CCE of PDCCH on the downlink subframe of preset number includes in public search space
RNTI value is divided into the 2nd RNTI set；
By in the value range of RNTI as defined in preset protocol the first RNTI set and the 2nd RNTI set other than
All RNTI values be divided into alternative RNTI set；
The RNTI configuration is generated according to the first RNTI set, the 2nd RNTI set and the alternative RNTI set
Table；
The generation module, is specifically used for:
Determine each RNTI value nRNTIThe CCE of the corresponding No. m candidate PDCCH of each downlink subframe in a radio frames is originated
Position Startk,m；
Wherein, Startk,m=L { (Yk+m)mod[NCCE,k/L]}；
Wherein, L is the CCE set class of PDCCH；M=0, M(L)- 1, M(L)To give the time monitored in search space
The number of PDCCH is selected, k is the subframe number in the radio frames, NCCE,kIt is of total CCE in the control area in subframe k
Number, Yk=(A × Yk-1) modD, Y-1=nRNTI≠ 0, A=39827, D=65537；
The RNTI by the initial position CCE of candidate PDCCH corresponding on each downlink subframe not in public search space
Value is divided into the first RNTI set, comprising:
By Startk,mAll RNTI values not in public search space are divided into the first RNTI set；
The generation module, also particularly useful for:
Count the Start of each RNTI value except the first RNTI setk,mNumber in public search space
It willThe 2nd RNTI set is divided into no more than the RNTI value of preset value X, wherein For
The number of downlink subframe in one radio frames.
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| CN109005536B (en) * | 2018-08-08 | 2020-02-14 | 北京邮电大学 | Conflict-free wireless network temporary identifier distribution method |
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