CN110139226B - Group state processing method and equipment based on B-trunk - Google Patents
Group state processing method and equipment based on B-trunk Download PDFInfo
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- CN110139226B CN110139226B CN201810131995.3A CN201810131995A CN110139226B CN 110139226 B CN110139226 B CN 110139226B CN 201810131995 A CN201810131995 A CN 201810131995A CN 110139226 B CN110139226 B CN 110139226B
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Abstract
The application discloses a group state processing method based on B-trunk, which comprises the following steps: when a base station receives G-RNTI MAC CE from UE, judging whether the UE is in a connected state; if the UE is not in the connected state, ending the current processing; if the UE is in a connected state, judging whether a flag bit of a common user corresponding to the UE is set; if the flag bit of the common user corresponding to the UE is set, ending the current processing; and if the flag bit of the common user corresponding to the UE is not set, adding 1 to the number of the monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit of the common user corresponding to the UE. The application also discloses a corresponding base station device. By applying the technical scheme disclosed by the application, the group state can be updated in real time.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a group status processing method and device based on B-TrunC.
Background
The B-trunk (broadband Trunking Communication) is a TD-LTE (time division-Long term evolution) based private network broadband Trunking system protocol standard which is established by broadband Trunking industry alliance organizations and is based on 'LTE digital transmission + Trunking voice Communication', the protocol mainly aims at standardizing broadband Trunking service functions such as Trunking voice, Trunking video, media Trunking dispatching and the like, has the characteristics of flexible bandwidth, high spectrum efficiency, low time delay and high reliability, and can meet the requirements of professional users on voice Trunking, broadband data, emergency command and dispatching and the like.
The B-TrunC protocol describes the terminal capabilities as follows:
G-RNTI (Group Radio Network Temporary Identifier) PDCCH (Physical Downlink Control Channel) blind detection capability type 1 terminal should support:
in the RRC IDLE state, the terminal should support blind detection of G-RNTI/SPS (Semi-Persistent Scheduling) G-RNTI in the PDCCH common space and group dedicated space;
in the RRC connection state, the terminal supports the blind detection of G-RNTI/SPS G-RNTI in the PDCCH common space and the group dedicated space; and C-RNTI (Cell Radio Network Temporary Identifier)/SPS C-RNTI/Temporary C-RNTI (Temporary C-RNTI) is detected in a PDCCH public space and a UE private space in a blind way.
G-RNTI PDCCH blind test capability type 2 terminal should support:
in the RRC IDLE state, the terminal supports the blind detection of G-RNTI/SPS G-RNTI in the PDCCH common space and the group dedicated space;
in the RRC connection state, the terminal supports the blind detection of G-RNTI/SPS G-RNTI in the PDCCH public space; and C-RNTI/SPS C-RNTI/Temporary C-RNTI is detected in a PDCCH public space and a UE private space in a blind way.
G-RNTI PDCCH blindly detects capability type 2 terminals and/or terminals that do not support simultaneous reception of C-RNTI PDSCH and G-RNTI PDSCH in one downlink TTI (transmission time interval) need to transmit G-RNTI MAC (medium access control) CE (control element) to the base station.
If the base station receives G-RNTI MAC CE sent by the UE through the MAC layer and the UE is still in the RRC connected state, the base station may stagger the scheduling times of C-RNTI PDSCH and G-RNTI PDSCH for the UE.
And if the base station receives G-RNTI MAC CE sent by the UE through the MAC layer and the UE is still in an RRC connection state, scheduling the G-RNTI of the group call in a PDCCH common space, otherwise scheduling the G-RNTI of the group call in the PDCCH common space and a group private space.
As mentioned above, the protocol specifies that whenever a G-RNTI PDCCH blind detection capability type 2 terminal or a terminal not supporting simultaneous reception of C-RNTI PDSCH and G-RNTI PDSCH in one downlink TTI needs to send G-RNTI MAC CE to the base station, the MAC CE is 16bit, and the format is shown in fig. 1.
For the B-TrunC group system, if a terminal (UE) receives common unicast downlink data and TTCH (Trunking Traffic Channel) and TCCH (Trunking Control Channel) multicast Traffic data at the same time, the terminal is two users at the base station side, that is: such as the group user and the general user shown in fig. 2. Referring to fig. 2, a group user is configured to issue TTCH and TCCH multicast service data, a general user is configured to issue general unicast data, and meanwhile, a UE reports G-RNTI MAC CE to the general user. It should be noted that, for the base station side, each group is regarded as a group user, and for the terminal, each group corresponds to the terminals of all members in the group, that is: corresponding to a plurality of terminals.
Here, the downlink data of the TCCH/TTCH channel is G-RNTI PDSCH data, and the downlink data of the common user is C-RNTI PDSCH data.
Although B-trunk clearly defines how to trigger G-RNTI MAC CE reporting, how to update the corresponding group state in real time according to G-RNTI MAC CE reported to the common user and select PDCCH space and C-RNTI/G-RNTI PDSCH scheduling for differentiation processing according to the group state is not clearly defined. In order to make up for the deficiency of the B-Trunc protocol, the application provides a base station group state judgment and processing mechanism based on the B-Trunc.
Disclosure of Invention
The application provides a group state processing method and equipment based on B-trunk to realize real-time update of a group state.
The application provides a group state processing method based on B-trunk, which comprises the following steps:
when a base station receives a group wireless network temporary identifier media access control unit G-RNTI MAC CE from User Equipment (UE), judging whether the UE is in a connected state;
if the UE is not in the connected state, ending the current processing;
if the UE is in a connected state, judging whether a flag bit of a common user corresponding to the UE is set;
if the flag bit of the common user corresponding to the UE is set, ending the current processing;
and if the flag bit of the common user corresponding to the UE is not set, adding 1 to the number of the monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit of the common user corresponding to the UE.
Preferably, the method further comprises:
when the UE is converted from a connection state to an idle state, or when a source cell releases UE context in the UE switching process, the base station checks a flag bit of a common user corresponding to the UE, if the flag bit is set, the flag bit is cleared by 0, and the number of monitoring users of group users corresponding to G-RNTI carried by the latest G-RNTI MAC CE report of the UE is reduced by 1.
Preferably, the method further comprises:
when a cluster control channel (TCCH) or cluster service channel (TTCH) downlink data of a group user needs to be issued, a base station judges whether the number of monitored users of the group user is equal to 0 or not;
if the number of monitored users of the group user is equal to 0, the Physical Downlink Shared Channel (PDSCH) resources can be allocated to TCCH or TTCH downlink data in any subframe for the group user, and Physical Downlink Control Channel (PDCCH) resources are allocated to the group user in a public space and a group dedicated space;
if the number of monitored users of the group user is greater than 0, the current subframe preferentially allocates PDSCH resources to TCCH or TTCH downlink data of the group user, and allocates PDCCH resources to the group user in a group dedicated space.
Preferably, the method further comprises:
when a common user has downlink data to be issued, the base station judges whether the flag bit of the common user is set;
if the flag bit of the ordinary user is not set, the PDSCH resources can be allocated to the downlink data of the ordinary user in any subframe;
if the flag bit of the common user is set, judging whether the current subframe allocates the PDSCH resources to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI or not for the common user, and if the PDSCH resources are allocated to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI, not allocating the PDSCH resources to the common user any more for the current subframe.
The application also provides a base station, which comprises a receiving module and a group state processing module:
a receiving module for receiving G-RNTI MAC CE from the UE;
the group state processing module is used for judging whether the corresponding UE is in a connected state or not after receiving the G-RNTI MAC CE of the UE;
if the UE is not in the connected state, ending the current processing;
if the UE is in a connected state, judging whether a flag bit of a common user corresponding to the UE is set;
if the flag bit of the common user corresponding to the UE is set, ending the current processing;
and if the flag bit of the common user corresponding to the UE is not set, adding 1 to the number of the monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit of the common user corresponding to the UE.
Preferably, when the UE changes from the connected state to the idle state, or when the source cell releases the UE context during the UE handover process, the group status processing module is further configured to check a flag bit of a common user corresponding to the UE, clear 0 to the flag bit if the flag bit is set, and subtract 1 from the monitored user number of the group user corresponding to the G-RNTI carried in the last G-RNTI MAC CE report of the UE.
Preferably, the base station further comprises a resource allocation module;
when a group user has TCCH or TTCH downlink data to be issued, the resource allocation module is used for judging whether the number of monitored users of the group user is equal to 0;
if the number of monitored users of the group user is equal to 0, the Physical Downlink Shared Channel (PDSCH) resources can be allocated to TCCH or TTCH downlink data in any subframe for the group user, and Physical Downlink Control Channel (PDCCH) resources are allocated to the group user in a public space and a group dedicated space;
if the number of monitored users of the group user is greater than 0, the current subframe preferentially allocates PDSCH resources to TCCH or TTCH downlink data of the group user, and allocates PDCCH resources to the group user in a group dedicated space.
Preferably, the base station further comprises a resource allocation module;
when the common user has downlink data to be issued, the resource allocation module is used for judging whether the flag bit of the common user is set;
if the flag bit of the ordinary user is not set, the PDSCH resources can be allocated to the downlink data of the ordinary user in any subframe;
if the flag bit of the common user is set, judging whether the current subframe allocates the PDSCH resources to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI or not for the common user, and if the PDSCH resources are allocated to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI, not allocating the PDSCH resources to the common user any more for the current subframe.
According to the technical scheme, when a base station receives G-RNTI MAC CE from UE, the B-Trunc-based group state processing technical scheme judges whether the UE is in a connected state, if so, the flag bit of a common user corresponding to the UE is further judged to be set, and when not set, the number of monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE is increased by 1, and the flag bit of the common user corresponding to the UE is set, so that the real-time update of the group state is realized, and in the subsequent processing, the resource allocation can be carried out according to the number of the monitored users of the group user and the flag bit of the common user.
Drawings
FIG. 1 is a schematic format diagram of G-RNTI MAC CE;
fig. 2 is a schematic diagram of a terminal simultaneously receiving normal unicast downlink data and TTCH and TCCH multicast service data;
FIG. 3 is a flowchart illustrating a preferred group status update scenario according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
There are two different scenarios for group status update, which are described below.
Group status update scenario 1: when the base station receives G-RNTI MAC CE reported through the MAC layer from the UE, the processing procedure is as shown in fig. 3, and includes the following steps:
<1>, judging whether the UE reporting the G-RNTI MAC CE is in a connected state, if so, performing subsequent processing, otherwise, ending the current processing;
<2>, judging whether the flag bit GroupFlameFlag of the common user corresponding to the UE is set, if so, ending the current process, otherwise, entering the next step;
and <3>, adding 1 to the group ListenuNum of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit group Flag of the common user corresponding to the UE.
The flag bit GroupFrameFlag of the UE is maintained by the base station and used for marking whether the UE is counted by the base station to a corresponding group, and when the context of the UE is established, the flag bit is initialized to 0.
The grouplidenuenum is the number of monitored users of the group, and the value is initialized to 0 when the group is established.
As mentioned above, for the base station side, each group is regarded as a group user, and for the terminal, each group corresponds to the terminals of all members in the group. Therefore, for the base station, the meaning of "group user" and "group" in the present application are the same, and are not described in detail below.
Group status update scenario 2: when the UE is converted from the connection state to the IDLE state, or the source cell releases the context of the UE in the UE switching process, the base station checks a flag bit GroupFlameFlag of a common user corresponding to the UE, if the flag bit is set, the flag bit is cleared by 0, and meanwhile, the GroupListENUENum of a group user corresponding to a G-RNTI carried by the UE at the latest G-RNTI MAC CE is reduced by 1.
The group state post-processing comprises the following steps:
1) when the group user has the downlink data of the TCCH/TTCH channel to be issued, judging whether the GroupListenuNum is equal to 0 (the downlink data of the TCCH/TTCH channel is G-RNTI PDSCH data):
if the GroupListenuNum is equal to 0, the PDSCH resources can be allocated to the downlink data of the TCCH/TTCH channel in any subframe for the group of users, and the PDCCH resources are allocated to the group in the public space and the group dedicated space;
if the GroupListenuNum is greater than 0, the current sub-frame preferentially allocates PDSCH resources to the downlink data of the TCCH/TTCH channel of the group of users, and allocates PDCCH resources to the group of users in the dedicated space of the group.
2) And when the common user has downlink data to be issued, judging whether the flag bit GroupFlameFlag of the common user is set (the downlink data of the common user is C-RNTI PDSCH data):
if the GroupFlameFlag is not set, PDSCH resources can be allocated to downlink data of a common user in any subframe;
if the GroupFrameFlag is set, for the common user, it needs to judge whether the current subframe has allocated PDSCH resources to the downlink data of the TCCH/TTCH channel of the group user corresponding to the G-RNTI, and if the current subframe has allocated PDSCH resources to the downlink data of the TCCH/TTCH channel of the group user corresponding to the G-RNTI, the current subframe does not allocate PDSCH resources to the common user any more.
Corresponding to the method, the present application further provides a base station, including a receiving module and a group status processing module:
a receiving module for receiving G-RNTI MAC CE from the UE;
the group state processing module is used for judging whether the corresponding UE is in a connected state or not after receiving the G-RNTI MAC CE of the UE;
if the UE is not in the connected state, ending the current processing;
if the UE is in a connected state, judging whether a flag bit of a common user corresponding to the UE is set;
if the flag bit of the common user corresponding to the UE is set, ending the current processing;
and if the flag bit of the common user corresponding to the UE is not set, adding 1 to the number of the monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit of the common user corresponding to the UE.
Preferably, when the UE changes from the connected state to the idle state, or when the source cell releases the UE context during the UE handover process, the group status processing module is further configured to check a flag bit of a common user corresponding to the UE, clear 0 to the flag bit if the flag bit is set, and subtract 1 from the monitored user number of the group user corresponding to the G-RNTI carried in the last G-RNTI MAC CE report of the UE.
Preferably, the base station may further include a resource allocation module;
when a group user has TCCH or TTCH downlink data to be issued, the resource allocation module is used for judging whether the number of monitored users of the group user is equal to 0;
if the number of monitored users of the group user is equal to 0, the Physical Downlink Shared Channel (PDSCH) resources can be allocated to TCCH or TTCH downlink data in any subframe for the group user, and Physical Downlink Control Channel (PDCCH) resources are allocated to the group user in a public space and a group dedicated space;
if the number of monitored users of the group user is greater than 0, the current subframe preferentially allocates PDSCH resources to TCCH or TTCH downlink data of the group user, and allocates PDCCH resources to the group user in a group dedicated space.
When the common user has downlink data to be issued, the resource allocation module is further configured to determine whether a flag bit of the common user is set;
if the flag bit of the ordinary user is not set, the PDSCH resources can be allocated to the downlink data of the ordinary user in any subframe;
if the flag bit of the common user is set, judging whether the current subframe allocates the PDSCH resources to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI or not for the common user, and if the PDSCH resources are allocated to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI, not allocating the PDSCH resources to the common user any more for the current subframe.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (4)
1. A group state processing method based on B-Trunc is characterized by comprising the following steps:
when a base station receives a group wireless network temporary identifier media access control unit G-RNTI MAC CE from User Equipment (UE), judging whether the UE is in a connected state;
if the UE is not in the connected state, ending the current processing;
if the UE is in a connected state, judging whether a flag bit of a common user corresponding to the UE is set;
if the flag bit of the common user corresponding to the UE is set, ending the current processing;
if the flag bit of the common user corresponding to the UE is not set, adding 1 to the number of monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit of the common user corresponding to the UE;
when the UE is converted from a connection state to an idle state, or when a source cell releases UE context in the UE switching process, a base station checks a flag bit of a common user corresponding to the UE, if the flag bit is set, the flag bit is cleared by 0, and the number of monitoring users of group users corresponding to G-RNTI carried by the latest G-RNTI MAC CE report of the UE is reduced by 1;
when a cluster control channel (TCCH) or cluster service channel (TTCH) downlink data of a group user needs to be issued, a base station judges whether the number of monitored users of the group user is equal to 0 or not;
if the number of monitored users of the group user is equal to 0, the Physical Downlink Shared Channel (PDSCH) resources can be allocated to TCCH or TTCH downlink data in any subframe for the group user, and Physical Downlink Control Channel (PDCCH) resources are allocated to the group user in a public space and a group dedicated space;
if the number of monitored users of the group user is greater than 0, the current subframe preferentially allocates PDSCH resources to TCCH or TTCH downlink data of the group user, and allocates PDCCH resources to the group user in a group dedicated space.
2. The method of claim 1, further comprising:
when a common user has downlink data to be issued, the base station judges whether the flag bit of the common user is set;
if the flag bit of the ordinary user is not set, the PDSCH resources can be allocated to the downlink data of the ordinary user in any subframe;
if the flag bit of the common user is set, judging whether the current subframe allocates the PDSCH resources to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI or not for the common user, and if the PDSCH resources are allocated to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI, not allocating the PDSCH resources to the common user any more for the current subframe.
3. A base station, comprising a receiving module and a group status processing module:
a receiving module for receiving G-RNTI MAC CE from the UE;
the group state processing module is used for judging whether the corresponding UE is in a connected state or not after receiving the G-RNTI MAC CE of the UE;
if the UE is not in the connected state, ending the current processing;
if the UE is in a connected state, judging whether a flag bit of a common user corresponding to the UE is set;
if the flag bit of the common user corresponding to the UE is set, ending the current processing;
if the flag bit of the common user corresponding to the UE is not set, adding 1 to the number of monitored users of the group user corresponding to the G-RNTI carried in the G-RNTI MAC CE, and setting the flag bit of the common user corresponding to the UE;
when the UE is switched from a connection state to an idle state, or when a source cell releases UE context in the UE switching process, the group state processing module is further configured to check a flag bit of a common user corresponding to the UE, clear 0 to the flag bit if the flag bit is set, and subtract 1 from the monitored user number of the group user corresponding to the G-RNTI carried by the latest G-RNTI MAC CE report of the UE;
the base station also comprises a resource allocation module;
when a group user has TCCH or TTCH downlink data to be issued, the resource allocation module is used for judging whether the number of monitored users of the group user is equal to 0;
if the number of monitored users of the group user is equal to 0, the Physical Downlink Shared Channel (PDSCH) resources can be allocated to TCCH or TTCH downlink data in any subframe for the group user, and Physical Downlink Control Channel (PDCCH) resources are allocated to the group user in a public space and a group dedicated space;
if the number of monitored users of the group user is greater than 0, the current subframe preferentially allocates PDSCH resources to TCCH or TTCH downlink data of the group user, and allocates PDCCH resources to the group user in a group dedicated space.
4. The base station of claim 3, wherein:
when the common user has downlink data to be issued, the resource allocation module is used for judging whether the flag bit of the common user is set;
if the flag bit of the ordinary user is not set, the PDSCH resources can be allocated to the downlink data of the ordinary user in any subframe;
if the flag bit of the common user is set, judging whether the current subframe allocates the PDSCH resources to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI or not for the common user, and if the PDSCH resources are allocated to the TCCH or TTCH downlink data of the group user corresponding to the G-RNTI, not allocating the PDSCH resources to the common user any more for the current subframe.
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