CN112055412B - Method and device for allocating physical downlink control channel resources of B-trunC group - Google Patents
Method and device for allocating physical downlink control channel resources of B-trunC group Download PDFInfo
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- CN112055412B CN112055412B CN201910484944.3A CN201910484944A CN112055412B CN 112055412 B CN112055412 B CN 112055412B CN 201910484944 A CN201910484944 A CN 201910484944A CN 112055412 B CN112055412 B CN 112055412B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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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
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application discloses a method and a device for allocating physical downlink control channel resources of a B-trunk group, which comprise the following steps: when a base station adopts a group dedicated space to schedule a group, detecting whether capability information which only supports a public space and is reported by group members of the base station is received currently; if the capability information supporting only common space is received, then common space scheduling is applied to the cluster control channel TCCH of the group. By applying the technical scheme disclosed by the application, the problem that group voice cannot be heard by group members which do not support the group special space due to late entering a group can be solved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating Physical Downlink Control Channel (PDCCH) resources in a broadband TrunC (B-TrunC) group.
Background
In the existing B-TrunC protocol, the following mechanism is adopted for PDCCH space allocation to a group:
and when a base station side Media Access Control (MAC) layer judges that a called user with a group radio network temporary identity (G-RNTI) PDCCH blind detection capability type 2 in the group call is in an RRC connection state, scheduling the G-RNTI of the group call in a PDCCH common space.
The existing Btrunc protocol stipulates that a base station and a terminal should support:
for the first paging of the group call, after the base station issues the trunking paging message, the base station starts a timer (set to 300ms), and before the timer is overtime, the base station schedules the G-RNTI of the group call in a public space.
And the G-RNTI PDCCH blind detection capability type 2 terminal receives the trunking paging message, and reports the capability information of the supported search space through a G-RNTI MAC information element (CE) if the terminal is in the RRC connection state.
When the timer is overtime and no terminal reports that only the public space is supported, the group search space of the base station can be changed into public and group private space (i.e. the G-RNTI to the group call can be scheduled in the public or group private space); otherwise, the base station should keep the G-RNTI of the group call scheduled in the public space.
In addition to the above, the base station may schedule the G-RNTI for the group call in the PDCCH common space and the group dedicated space.
The base station receives the G-RNTI MAC CE sent by the UE through the MAC layer, and the UE is still in the RRC connection state, the base station can stagger the scheduling time of the C-RNTI PDSCH and G-RNTI PDSCH of the UE for the UE.
The applicant has discovered in the course of the present invention that: based on the existing Btrunc protocol, the problem that part of group members cannot hear group voice exists. The specific analysis is as follows:
according to the existing Btrunc protocol, after a timer started after a base station issues a trunking paging message is overtime, if no terminal reports that only a public space is supported, a group search space of the base station can be changed into the public space and a private space, at this time, if the private space is allocated to the group, a G-RNTI of the group call is scheduled in the group private space, and then if a terminal of the group only supporting the public space is started or enters later, the terminal does not support the private space, so that a user of the terminal can not hear voice of the group all the time.
Disclosure of Invention
The application provides a method and a device for allocating PDCCH (physical downlink control channel) resources of a B-trunk group, which can solve the problem that group voice cannot be heard under the condition that group members which do not support a group special space enter a group later.
The embodiment of the application discloses a method for allocating physical downlink control channel resources of a B-trunk group, which comprises the following steps:
when a base station adopts a group dedicated space to schedule a group, detecting whether capability information which only supports a public space and is reported by group members of the base station is received currently;
if the capability information supporting only common space is received, then common space scheduling is applied to the cluster control channel TCCH of the group.
Preferably, after employing common spatial scheduling for the TCCHs of the group, the method further comprises:
and when the preset search space conversion condition is met, the base station issues scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space. Preferably, the search space conversion condition is that the number of times that the TTCH of the group issues scheduling information in a public space reaches N times, where N is a preset public space scheduling number threshold, and N is greater than or equal to 1.
The embodiment of the present application further discloses a device for allocating physical downlink control channel resources of a B-TrunC group, which is disposed in a base station and includes: a processor to:
when a base station adopts the special space scheduling of the group to the group, if the capability information which only supports the public space and is reported by the group members of the base station is received, then the public space scheduling is adopted to the cluster control channel TCCH of the group;
and when the preset search space conversion condition is met, the base station issues scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
Preferably, the processor is specifically configured to: after the TCCH of the group is scheduled by adopting the public space, and after the preset search space conversion condition is met, the base station issues scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
Preferably, the search space conversion condition is that the number of times that the TTCH of the group issues scheduling information in a public space reaches N times, where N is a preset public space scheduling number threshold, and N is greater than or equal to 1.
The embodiment of the present application further discloses a non-transitory computer-readable storage medium, which stores instructions, and when executed by a processor, the instructions cause the processor to perform the steps of the method for allocating physical downlink control channel resources of a B-TrunC group as described above.
An embodiment of the present application further discloses an electronic device, which includes the nonvolatile computer readable storage medium as described above, and the processor having access to the nonvolatile computer readable storage medium.
According to the technical scheme, the method and the device for allocating the PDCCH resources of the Btrunc group trigger the PDCCH to use the public space after the reporting capability of the late user which does not support the special space of the group, namely, the TCCH of the cluster control channel of the group is scheduled by the public space, so that the group scheduling information can be received in the public space after the group members which do not support the special space of the group enter the group, and the group voice can be heard after the group members which do not support the special space of the group enter the group.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of 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.
The embodiment of the application discloses a method for allocating physical downlink control channel resources of a B-Trunc group, which comprises the following steps that as shown in figure 1:
In this step, when the base station uses the group dedicated space to schedule the group, in order to avoid the problem that the group voice cannot be heard due to the inability to monitor the group dedicated space after the group members that do not support the group dedicated space later enter the group, it is necessary to monitor whether there is any group member reporting the capability information that only supports the public space, so as to switch to the public space in time to issue the group scheduling information, and ensure that all the group members monitoring the group can hear the group voice.
And 102, if the capability information only supporting the public space is received, then adopting public space scheduling for the cluster control channel TCCH of the group.
In this step, when it is detected in step 101 whether the capability information only supporting the common space, reported by the group members of the group, is currently received, the TCCH of the group will adopt common space scheduling thereafter. After the TCCH is adjusted to the public space to issue the scheduling information once, the cluster control channel TTCH of the group also issues the scheduling information by adopting the group public space. Thus, by adjusting the scheduling of the group to the public space, it can be ensured that group members that do not support the group-dedicated space can hear the group voice even after late entry into the group.
Preferably, in order to save common space resources, after the common space scheduling is performed on the TCCH of the group, after a certain condition is met, the group dedicated space may be used for group scheduling, and specifically, the following method is used to achieve this purpose:
and when the preset search space conversion condition is met, the base station transmits scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
Preferably, the search space conversion condition may be that the number of times that the TTCH of the group issues the scheduling information using the common space reaches N times.
And N is a preset public space scheduling frequency threshold, and is more than or equal to 1. Specifically, a person skilled in the art may set an appropriate value according to actual needs, as long as it is ensured that group members that only support the public space can correctly receive the group scheduling information.
The embodiment of the present application further discloses a device for allocating physical downlink control channel resources of a B-TrunC group, which is disposed in a base station and includes: a processor to:
when a base station adopts the special space scheduling of the group to the group, if the capability information which only supports the public space and is reported by the group members of the base station is received, then the public space scheduling is adopted to the cluster control channel TCCH of the group;
and when the preset search space conversion condition is met, the base station issues scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
Preferably, the processor is specifically configured to: after the TCCH of the group is scheduled by adopting the public space, and after the preset search space conversion condition is met, the base station issues scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
Preferably, the search space conversion condition is that the number of times that the TTCH of the group issues scheduling information in a common space reaches N times, where N is a preset threshold of the number of times of scheduling in the common space, and N is greater than or equal to 1.
In addition, a non-transitory computer-readable storage medium is disclosed in an embodiment of the present application, and stores instructions, where the instructions, when executed by a processor, cause the processor to perform the steps of the method for allocating physical downlink control channel resources of a B-TrunC group as described above.
In addition, an electronic device is further disclosed in an embodiment of the present application, and includes the nonvolatile computer readable storage medium as described above, and the processor having access to the nonvolatile computer readable storage medium.
According to the technical scheme, the PDCCH resource allocation method and the device of the B-Trunc group trigger the PDCCH to use the public space after the reporting capability of the late user which does not support the special space of the group, namely, the public space scheduling is adopted for the cluster control channel TCCH of the group, so that the group scheduling information can be received in the public space after the group members which do not support the special space of the group enter the group in the late way, and the group voice can be heard after the group members which do not support the special space of the group enter the group in the late way.
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 (6)
1. A method for allocating physical downlink control channel resources of a B-Trunc group is characterized by comprising the following steps:
when a base station adopts a group dedicated space to schedule a group, detecting whether capability information which only supports a public space and is reported by group members of the base station is received currently;
if the capability information only supporting the public space is received, then adopting public space scheduling for the cluster control channel (TCCH) of the group;
and when the preset search space conversion condition is met, the base station transmits scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
2. The method of claim 1, wherein: the search space conversion condition is that the number of times of sending scheduling information by the TTCH of the group in a public space reaches N times, wherein N is a preset public space scheduling number threshold value, and N is more than or equal to 1.
3. An apparatus for allocating physical downlink control channel resources of a B-TrunC group, which is disposed in a base station, comprises: a processor to:
when a base station adopts the special space scheduling of the group to the group, if the capability information which only supports the public space and is reported by the group members of the base station is received, then the public space scheduling is adopted to the cluster control channel TCCH of the group;
and when the preset search space conversion condition is met, the base station transmits scheduling information to the cluster transmission channel TTCH of the group by adopting a group dedicated space.
4. The apparatus of claim 3, wherein the search space transition condition is that the number of times that the TTCH of the group issues the scheduling information in the public space reaches N times, where N is a preset threshold of the number of times of the public space scheduling, and N is greater than or equal to 1.
5. A non-transitory computer readable storage medium storing instructions, which when executed by a processor, cause the processor to perform the steps of the method for physical downlink control channel resource allocation of a B-TrunC group according to any one of claims 1 to 2.
6. An electronic device comprising the non-volatile computer-readable storage medium of claim 5, and the processor having access to the non-volatile computer-readable storage medium.
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