CN115442755B - Channel establishment method, device, equipment and storage medium - Google Patents
Channel establishment method, device, equipment and storage medium Download PDFInfo
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- CN115442755B CN115442755B CN202110627573.7A CN202110627573A CN115442755B CN 115442755 B CN115442755 B CN 115442755B CN 202110627573 A CN202110627573 A CN 202110627573A CN 115442755 B CN115442755 B CN 115442755B
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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
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
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Abstract
The present disclosure provides a channel establishment method, apparatus, device, storage medium and program product, relating to a communication technology, including: receiving group information sent by user equipment, wherein the group information comprises a current group, and storing the corresponding relation between UE and the group information; when the group is established, a single-cell broadcast service channel is established for the UE receiving or preparing to receive the group according to the corresponding relation, wherein the UE receiving or preparing to receive the group is the UE taking the group as the current group. In the scheme provided by the disclosure, the corresponding relation between the UE and the group information is stored in advance, and then after the group is established, the SC-MTCH channels are established only for the UE which is receiving or is ready to receive the established group, so that the quantity of the established SC-MTCH channels in the group communication is effectively reduced, and the channel resources are saved.
Description
Technical Field
The present disclosure relates to communication technologies, and in particular, to a channel establishment method, apparatus, device, storage medium, and program product.
Background
Currently, the 5G NR technology is mature, and is applied to various industries, for example, in a group multicast service, the 5G NR technology is also applied, so as to improve the communication effect of group communication.
In the group multicast service, a User Equipment (UE) may join a group communication flow through a group, and may specifically notify a core network of an interested group list. The core network informs the 5G base station of the group list. After the session is started, the core network notifies the 5G base station to establish a group, the 5G base station notifies the terminal of the establishment of the group through a Single Cell multicast control channel (Single Cell-Multicast Control Channel, SC-MCCH for short) broadcasted through an air interface, and notifies the terminal of the group data through a Single Cell broadcast service channel (Single Cell MBMS Traffic Channel, SC-MTCH for short) broadcasted through the air interface. And the 5G base station informs the UE interested in the group to enter an RRC Active state and feeds back the quality of the group data.
However, in practical application, the UE can only receive the call of 1 voice group at the same time, and in the implementation process of the group communication, no matter whether the UE can receive the call of the voice group, the 5G base station establishes the SC-MTCH with the UE after the session is opened, which further results in a lot of group resource waste.
Disclosure of Invention
The present disclosure provides a method, apparatus, device, storage medium, and program product for channel establishment, so as to solve the problem of group resource waste in the prior art.
A first aspect of the present disclosure provides a channel establishment method applied to group communication, including:
receiving group information sent by User Equipment (UE), wherein the group information comprises a current group and stores the corresponding relation between the UE and the group information;
when the group is established, a single-cell broadcast service channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) is established for the UE receiving or preparing to receive the group according to the corresponding relation, wherein the UE receiving or preparing to receive the group is the UE taking the group as the current group.
Another aspect of the present disclosure provides a channel setup apparatus applied to group communication, including:
a receiving unit, configured to receive group information sent by a User Equipment (UE), where the group information includes a current group, and store a correspondence between the UE and the group information;
and a channel establishing unit, configured to establish a single-cell broadcast traffic channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) for UEs receiving or preparing to receive the group according to the correspondence when the group is established, where the UEs receiving or preparing to receive the group are UEs taking the group as a current group.
Yet another aspect of the present disclosure is to provide a network device, comprising:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method as described in the first aspect above.
Yet another aspect of the present disclosure is to provide a computer readable storage medium having stored thereon a computer program to be executed by a processor to implement the method as described in the first aspect above.
Yet another aspect of the present disclosure is to provide a computer program product comprising a computer program which, when executed by a processor, implements a method as described in the first aspect above.
The channel establishment method, the device, the equipment, the storage medium and the program product provided by the disclosure have the technical effects that:
the channel establishment method, apparatus, device, storage medium and program product provided in this embodiment include: receiving group information sent by User Equipment (UE), wherein the group information comprises a current group and stores the corresponding relation between the UE and the group information; when the group is established, a single-cell broadcast traffic channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) is established for the UEs receiving or preparing to receive the group according to the correspondence, wherein the UEs receiving or preparing to receive the group are UEs taking the group as the current group. In the scheme provided by the disclosure, the corresponding relation between the UE and the group information is stored in advance, and then after the group is established, the SC-MTCH channels are established only for the UE which is receiving or is ready to receive the established group, so that the quantity of the established SC-MTCH channels in the group communication is effectively reduced, and the channel resources are saved.
Drawings
Fig. 1 is a schematic diagram of a group multicast service shown in an exemplary embodiment;
fig. 2 is a flow chart illustrating a channel setup method applied to group communication according to an exemplary embodiment of the present disclosure;
fig. 3 is a flowchart illustrating a channel setup method applied to group communication according to another exemplary embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating establishment of a channel for a UE according to an exemplary embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating allocation of channels for a UE according to another exemplary embodiment of the present disclosure;
fig. 6 is a block diagram illustrating a channel setup apparatus applied to group communication according to an exemplary embodiment of the present disclosure;
fig. 7 is a block diagram illustrating a channel setup apparatus applied to group communication according to another exemplary embodiment of the present disclosure;
fig. 8 is a block diagram of a network device according to an exemplary embodiment of the present disclosure.
Detailed Description
Fig. 1 is a schematic diagram of a group multicast service according to an exemplary embodiment.
The general flow of the group multicast service is shown in fig. 1, in which a UE (User Equipment) informs a core network of a group list of interest to a User through a group joining flow. The core network informs the gNB (5G base station) of the group list. After the session starts, the core network notifies the gNB to perform group establishment.
The gNB informs the terminal of the terminal group establishment through an SC-MCCH channel (Single Cell-Multicast Control Channel) broadcasted through an air interface, and informs the terminal of the group data through an SC-MTCH channel broadcasted through an air interface. And the gNB informs all the terminals of the affiliated group to enter an RRC Active state and feeds back the quality of the group data.
In this implementation, after the session is opened, the gNB performs group establishment and establishes the SC-MTCH with the UE. However, if the UE is performing the remaining service or the remaining group service, the UE cannot receive the call of the voice group. However, in this case, the base station still establishes SC-MTCH channels with these UEs in the existing implementation, which leads to a lot of group resource waste.
In order to solve the above technical problems, in the solution provided in the present disclosure, when a group is established, an SC-MTCH channel is established only for UEs that are receiving or are ready to receive the group, thereby saving group resources.
Fig. 2 is a flow chart illustrating a channel setup method applied to group communication according to an exemplary embodiment of the present disclosure.
As shown in fig. 2, the channel establishment method applied to group communication provided in the present disclosure includes:
in step 201, group information sent by a User Equipment (UE) is received, where the group information includes a current group, and a correspondence between the UE and the group information is stored.
The method provided by the disclosure can be executed by network side equipment in a communication network. The method provided by the present disclosure may be specifically performed by one or more network side devices, such as AMF (core network access and mobility management function, core Access and Mobility Management Function) and gNB (5G base station) at the network side.
Specifically, the UE may send a group message to the network side, for example, the UE may notify the core network of the group message. In an alternative embodiment, the UE may send a group message to the AMF at the network side, so that the AMF may receive the group message sent by the UE.
In practical application, the group message sent by the UE to the core network may include a current group, where the current group refers to a group that the UE is receiving or is ready to receive. The group message uploaded by the UE may include a plurality of current groups, and thus, the group message may include a current group list, where information of the plurality of current groups may be set.
For example, the UE may send a group message to the core network by means of a group identification.
The electronic device may record a correspondence between the UE and the group information, for example, a correspondence between the UE identifier and the group information may be stored.
In an alternative embodiment, if the step is performed by the AMF, the AMF may further send a correspondence between the identifier of the UE and the group information to the gNB, so that the gNB may store the correspondence between the UE and the group information, and when the gNB stores the context of the UE, the group information of the UE may be recorded in the context.
In step 202, when the group is established, a single cell broadcast traffic channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) is established for the UEs receiving or preparing to receive the group according to the correspondence, wherein the UEs receiving or preparing to receive the group are UEs taking the group as the current group.
In an alternative embodiment, when the group is activated, the core network may notify the gNB of the group establishment, so that the gNB establishes the group.
Specifically, when the group is established, the currently established group can be determined as the UE of the current group according to the corresponding relation between the stored UE and the group information. For example, if the group message sent by the UE1 includes the current group 1, when the group 1 is established, it may be determined that the UE having the group 1 as the current group is the UE1.
Further, this step may be performed by the gNB, for example, after the core network notifies the gNB of the group establishment, the gNB may notify the terminal of the group establishment through the SC-MCCH, and after the group establishment, it may be determined that the UE receiving or preparing to receive the group is the UE taking the group as the current group.
In practice, the SC-MTCH channel may be established for each UE that is receiving or is ready to receive the group, thereby enabling those UEs to receive traffic data over the SC-MTCH channel.
In such an embodiment, in group communication, the SC-MTCH channel may be established only for UEs that are receiving or are ready to receive the group, thereby reducing the number of SC-MTCH channels established so as not to waste channel resources. In the prior art, the SC-MTCH channels are established for all UEs interested in the established group, so that the number of established SC-MTCH channels can be reduced compared with the prior art.
Since the UE receiving or preparing to receive the group is able to receive the call of the group, group communication is not affected even if the SC-MTCH channel of other UEs is not established.
The method provided by the present embodiment is used for establishing a channel in group communication, and is performed by a device provided with the method provided by the present embodiment, which is typically implemented in hardware and/or software.
The channel establishment method applied to group communication provided in the embodiment includes: receiving group information sent by User Equipment (UE), wherein the group information comprises a current group and stores the corresponding relation between the UE and the group information; when the group is established, a single-cell broadcast traffic channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) is established for the UEs receiving or preparing to receive the group according to the correspondence, wherein the UEs receiving or preparing to receive the group are UEs taking the group as the current group. In the scheme provided by the disclosure, the corresponding relation between the UE and the group information is stored in advance, and then after the group is established, the SC-MTCH channels are established only for the UE which is receiving or is ready to receive the established group, so that the quantity of the established SC-MTCH channels in the group communication is effectively reduced, and the channel resources are saved.
Fig. 3 is a flowchart illustrating a channel setup method applied to group communication according to another exemplary embodiment of the present disclosure.
As shown in fig. 3, the channel establishment method applied to group communication provided in this embodiment includes:
step 301, receiving group information sent by a User Equipment (UE), where the group information includes a current group and a listening group, and storing a correspondence between the UE and the group information.
The method provided by the disclosure can be executed by network side equipment in a communication network. The method provided by the present disclosure may be performed in particular by one or more network side devices, such as AMF (core network access and mobility management function, core Access and Mobility Management Function) and gNB (5G base station) at the network side, and may be performed in particular by RAN in the gNB.
In the embodiment of the disclosure, the group information sent by the UE to the network side includes a current group and a monitoring group. The listening group is used to characterize the group of interest to the UE, and the current group is used to characterize the group that the UE is ready to accept or is receiving or is ready to receive.
In this embodiment, the listening group sent by the UE to the network side may be in a list form.
Specifically, the user of the UE or a program set in the UE may select a listening group and a current group, and the UE may send group information to the network side according to the selection result.
Further, after the network receives the group information, the correspondence between the UE and the group information may be stored.
In practical application, the AMF may receive and record the group information sent by the UE, and send the correspondence between the UE and the group information to the gNB. The AMF is a main functional unit of the 5G core network, and completes access and mobility management of the end user.
In this embodiment, the group information of the UE may be recorded in the AMF, and may also be stored in the gNB. When the gNB is in a connection relationship with the UE, the gNB may store a context of the UE through which group information of the UE may be stored.
Step 302, acquiring the state of the UE, and adjusting the network connection state of the UE according to the state; the network connection state includes any one of the following states: radio resource control deactivation (Radio Resource Control inActive, RRC inActive), radio resource control IDLE (Radio Resource Control IDLE, RRC IDLE), radio resource control connection (Radio Resource Control connected, RRC connected).
The network side device may further execute step 302, and the execution timing of step 302 and step 301 is not limited.
Specifically, the network side device may obtain a state of the UE, where the state is used to characterize a service state of the UE. Thereby adjusting the network connection state of the UE according to the service state of the UE. For example, when the UE does not process the service for a long time, the network connection state of the UE may be adjusted to be RRC IDLE, so as to reduce the UE power consumption.
Furthermore, the RRC in 5G NR supports three states, rrc_idle, rrc_inactive, rrc_connected. Rrc_idle is IDLE mode, rrc_inactive is deactivated mode, and rrc_connected is CONNECTED mode.
When the network connection state of the UE is rrc_idle, the CM-IDLE state belongs to the core network side, and on the RAN side, the gNB has no context of the UE. The CM is a connection management state of the terminal.
The UE is in an Inactive state, still belongs to a CM-Connected state of the core network side, and at the RAN side, a UE context is stored, where the context may include group information of the UE.
Therefore, if the network connection state of the UE is adjusted to rrc_connected by RRC IDLE, and the gNB restores the information of the UE, such as restoring the context of the UE, the AMF may send the group information of the UE to the gNB. So that the RAN on the gNB side can also store group information of the UE.
When the network connection state of the UE is RRC IDLE, the gNB has no context of the UE, that is, no group information of the UE. When the network connection state of the UE is switched to rrc_connected, the gNB cannot acquire the group information of the UE, so the AMF may send the group information of the UE to the gNB, so that the gNB may establish a channel for the UE according to the group information of the UE.
Fig. 4 is a schematic diagram illustrating establishment of a channel for a UE according to an exemplary embodiment of the present disclosure.
As shown in fig. 4, when a group is established, the UE may upload group information, and the AMF at the network side may store corresponding information and send the information to the gNB.
In one embodiment, when the UE has no service, the UE may be controlled to return to the inactive state, so as to reduce the UE energy consumption, where both the AMF and the RAN at the network side can determine the group information of the UE.
In another embodiment, when the UE has no service, the UE may be controlled to return to the IDLE state, so as to reduce the UE power consumption, and at this time, the AMF at the network side may determine the group information of the UE.
Thus, when the UE is in an inactive state, a channel for group communication may be established by the RAN for the UE. When the UE is in the IDLE state, the AMF may notify the gNB to which the UE belongs, so that the RAN of the gNB establishes a channel for group communication for the UE.
Step 303, a Single Cell multicast control channel (SC-MCCH) is established for the UEs of the listening group according to the correspondence.
When a group needs to be established, the network side device may establish an SC-MCCH channel for UEs that monitor the group, for example, when a group 1 needs to be established, if a plurality of UEs monitor the group 1, the SC-MCCH channel may be respectively established for the UEs.
Specifically, the radio access network (Radio Access Network, RAN) may determine the UE in the second connection state according to the correspondence between the UE and the group and the network connection state of the UE. The second connection state UE refers to a UE whose network connection state is RRC inActive or RRC connected and monitors a group that needs to be currently established.
For example, when group 1 is currently required to be established, and the listening group of UE1 includes group 1, and the network connection state of UE1 is RRC connected, the RAN may determine that UE1 is a UE in the second connection state.
Further, the RAN may establish an SC-MCCH channel for each UE in the second connection state, thereby establishing a group. The SC-MCCH channel may be established in a Bandwidth Part (BWP) specifically.
In practical application, there may be a UE that listens to the group that needs to be currently established, but has a network connection state of RRC IDLE. And the core network access and mobility management function (Core Access and Mobility Management Function, AMF) can determine the second IDLE state UE of which the network connection state is RRC IDLE and monitors the group according to the corresponding relation and the network connection state of the UE, so that the SC-MTCH channel of each second IDLE state UE is established.
The second IDLE state UE refers to a UE whose network connection state is RRC IDLE and monitors a group currently required to be established. The AMF may determine the second idle state UE.
For example, when group 1 is currently required to be established, and the listening group of UE2 includes group 1, and the network connection state of UE2 is RRC IDLE, the AMF may determine that UE2 is a second IDLE state UE.
Further, the AMF may determine the RAN to which each second idle state UE belongs, and the RAN to which the second idle state UE belongs establishes an SC-MCCH channel for the UE, thereby establishing a group. The AMF may record the gNB to which each second idle state UE belongs, and the AMF may notify the gNB to which the second idle state UE belongs to establish the SC-MCCH channel.
The RAN in the gNB to which the second idle state UE belongs may determine a cell to which the second idle state UE belongs, so that the RAN establishes an SC-MCCH channel for the second idle state UE according to the cell to which the second idle state UE belongs.
The SC-MCCH channel may be established in particular in an Initial bandwidth portion (Initial Bandwidth Part, initial BWP).
It can be seen that in the scheme provided by the present disclosure, an SC-MCCH channel is established for UEs of a listening group. For example, when group 1 is currently to be established, the SC-MCCH channel is established for the UE listening to group 1.
In practical application, the scheme provided by the present disclosure can also establish an SC-MTCH channel for the UE based on the following steps.
In step 304, the radio access network (Radio Access Network, RAN) determines, according to the correspondence and the network connection state of the UE, a first connection state UE whose network connection state is RRC inActive or RRC connected and is receiving or preparing to receive the group.
Specifically, the RAN on the network side may determine the UE in the first connection state according to the correspondence between the UE and the group and the network connection state of the UE. The UE in the first connection state refers to a UE whose network connection state is RRC inActive or RRC connected and is listening or preparing to listen to a group currently required to be established.
If the UE takes a group as a current group, the UE is characterized to answer or prepare to answer the current group, so that the UE of the group which needs to be established currently can be determined to answer or prepare to answer according to the current group in the group information of each UE.
For example, if group 1 is currently required to be established, and group 1 is included in the current group of UE3, and the network connection state of UE3 is RRC connected, the RAN may determine that UE3 is a UE in the first connection state.
In step 305, the ran establishes an SC-MTCH channel for each UE in the first connection state on a Bandwidth Part (BWP).
Further, the RAN may establish an SC-MTCH channel for each first connectivity UE, thereby establishing a group. The SC-MTCH channel may be established in a Bandwidth Part (BWP), in particular.
In an alternative embodiment, if the network connection state of the UE is RRC inActive, the SC-MTCH channel may be established on the initial BWP.
In step 306, the core network access and mobility management function (Core Access and Mobility Management Function, AMF) determines, according to the correspondence and the network connection state of the UE, that the network connection state is the first IDLE state UE of the RRC IDLE that is or is ready to receive the group.
In practice, there may be UEs that receive or are ready to receive the group that currently needs to be established, but whose network connection state is RRC IDLE. The AMF can determine the first idle state UE according to the corresponding relation and the network connection state of the UE. The first IDLE state UE refers to a UE whose network connection state is RRC IDLE and whose group is the current group, so as to establish an SC-MTCH channel of each first IDLE state UE.
For example, if group 1 is currently required to be established, and group 1 is included in the current group of UE4, and the network connection state of UE4 is RRC IDLE, the AMF may determine that UE4 is the first IDLE state UE.
In step 307, the amf determines the RAN to which the first idle state UE belongs, and establishes an SC-MTCH channel for each first idle state UE in an Initial bandwidth part (Initial Bandwidth Part, initial BWP) by the RAN to which the first idle state UE belongs.
Further, the AMF may determine the RAN to which each UE in the first idle state belongs, and the RAN to which the UE in the first idle state belongs establishes an SC-MTCH channel for the UE, thereby establishing a group. The AMF may record the gNB to which each first idle state UE belongs, and the AMF may notify the gNB to which the first idle state UE belongs to establish the SC-MTCH channel.
The RAN in the gNB to which the first idle state UE belongs may determine a cell to which the first idle state UE belongs, so that the RAN establishes an SC-MTCH channel for the first idle state UE according to the cell to which the first idle state UE belongs.
The SC-MTCH channel may be established in particular in an Initial bandwidth portion (Initial Bandwidth Part, initial BWP).
It can be seen that in the solution provided by the present disclosure, an SC-MCTH channel is established for a UE that is receiving or is ready to receive a group. For example, group 1 is currently to be established, an SC-MTCH channel is established for UEs that are receiving or are ready to receive the group 1.
In the scheme provided by the disclosure, the ranges of the UE when the SC-MCCH channel and the SC-MTCH channel are established are different, and the SC-MCTH channel is only established for the UE which is receiving or is ready to receive the group, so that the quantity of the established SC-MCTH channels can be reduced, and further the waste of channel resources is avoided.
Further, in the scheme provided by the disclosure, if the network connection state of the UE is RRC IDLE, the AMF recorded with the correspondence between the UE and the group information informs the gNB to which the UE belongs, and further establishes a channel for the UE through the RAN of the gNB. If the network connection state of the UE is RRC inActive or RRC connected, the RAN may directly establish a channel for the UE.
Fig. 5 is a schematic diagram illustrating allocation of channels for UEs according to another exemplary embodiment of the present disclosure.
As shown in fig. 5, there are UE1, UE2, and UE3. For example, each of the three UEs has 100 subscription groups 1-100 and 10 listening groups 1-10, while each UE can only receive two groups. Group 1 is not busy for 24 hours. So that the corresponding UE can process according to no service when the group has no service.
UE1 currently selects group 1, group 2, whose network connection state is RRC connected.
UE2 currently selects group 5. The network connection state is RRC active
The UE3 currently selects group 1, and when there is no traffic in group 1, its network connection state is set to RRC IDLE.
Group information of UE1 is stored in the gNB, so that SC-MCCH channel and SC-MTCH channel can be established by the RAN for UE1.
Group information of UE2 is stored in the gNB, so that SC-MCCH channel and SC-MTCH channel can be established by the RAN for UE 2.
In an alternative embodiment, if UE2 is not under the current gNB, the RNA of UE2 is acquired to trigger a channel of the base station BWP within the RNA.
Since group information of no UE3 is stored in the gNB, the AMF can notify the gNB to which the UE3 belongs to establish a channel for the UE3.
Fig. 6 is a block diagram illustrating a channel setup apparatus applied to group communication according to an exemplary embodiment of the present disclosure.
As shown in fig. 6, the channel establishing apparatus 600 applied to group communication provided in this embodiment includes:
a receiving unit 610, configured to receive group information sent by a User Equipment (UE), where the group information includes a current group, and store a correspondence between the UE and the group information;
a traffic channel establishing unit 620, configured to establish a single-cell broadcast traffic channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) for UEs receiving or preparing to receive the group according to the correspondence when the group is established, where the UEs receiving or preparing to receive the group are UEs taking the group as a current group.
The channel establishing device applied to group communication, provided by the disclosure, stores the corresponding relation between the UE and the group information in advance, and further establishes the SC-MTCH channel only for the UE receiving or preparing to receive the established group after the group is established, thereby effectively reducing the quantity of establishing the SC-MTCH channel in the group communication and saving channel resources.
The specific principle and implementation of the device provided in this embodiment are similar to those of the embodiment shown in fig. 2, and will not be described here again.
Fig. 7 is a block diagram illustrating a channel setup apparatus applied to group communication according to another exemplary embodiment of the present disclosure.
As shown in fig. 7, the channel establishing apparatus 700 applied to group communication provided in this embodiment further includes:
a network state adjustment unit 630, configured to obtain a state of the UE, and adjust a network connection state of the UE according to the state;
the network connection state includes any one of the following states:
radio resource control deactivation (Radio Resource Control inActive, RRC inActive), radio resource control IDLE (Radio Resource Control IDLE, RRC IDLE), radio resource control connection (Radio Resource Control connected, RRC connected).
Wherein the traffic channel setup unit 620 comprises a first connection module 621, the first connection module 621 being arranged in a radio access network (Radio Access Network, RAN) for:
according to the corresponding relation and the network connection state of the UE, determining that the network connection state is RRC inActive or RRC connected UE in the first connection state of the group or is ready to receive;
the SC-MTCH channel of each first connection state UE is established on a Bandwidth Part (BWP).
Wherein the traffic channel setup unit 620 includes a second connection module 622, the second connection module 622 is disposed in a core network access and mobility management function (Core Access and Mobility Management Function, AMF) for:
according to the corresponding relation and the network connection state of the UE, determining that the network connection state is the first IDLE state UE of the RRC IDLE which is receiving or is ready to receive the group;
determining the RAN to which the first idle state UE belongs, and sending a notification message to the RAN to which the first idle state UE belongs, so that the RAN establishes an SC-MTCH channel of each first idle state UE in an Initial bandwidth part (Initial Bandwidth Part, initial BWP).
In an alternative embodiment, the group information further includes a listening group;
the apparatus further comprises a control channel establishing unit 640 for:
and establishing a Single Cell multicast control channel (SC-MCCH) for the UE monitoring the group according to the corresponding relation.
The control channel setup unit 640 includes a third setup module 641, where the third setup module 641 is disposed in the RAN and is configured to:
determining a second connection state UE of which the network connection state is RRC inActive or RRC connected to monitor the group according to the corresponding relation and the network connection state of the UE;
the SC-MTCH channel of each second connection state UE is established on the BWP.
The control channel establishment unit 640 includes a fourth establishment module 642, where the fourth establishment module 642 is disposed in the AMF and is configured to:
determining a second IDLE state UE of which the network connection state is RRC IDLE and monitors the group according to the corresponding relation and the network connection state of the UE;
and determining the RAN to which the second idle state UE belongs, and sending a notification message to the RAN to which the second idle state UE belongs, so that the RAN establishes an SC-MTCH channel of each second idle state UE in the Initial BWP.
Optionally, the receiving unit 610 includes a receiving module 611 and a sending module 612, where the receiving module 611 and the sending module 612 are disposed in the AMF:
the receiving module 611 is configured to receive and record group information sent by the UE;
the sending module 612 is configured to send, to a base station, a correspondence between UEs and the group information.
Optionally, if the network connection state of the UE is adjusted to rrc_connected by RRC IDLE and the base station recovers the information of the UE, the sending module 612 is further configured to send the group information of the UE to the base station.
The specific principle and implementation of the device provided in this embodiment are similar to those of the embodiment shown in fig. 3, and will not be described here again.
Fig. 8 is a block diagram of a network device according to an exemplary embodiment of the present disclosure.
As shown in fig. 8, the network device provided in this embodiment includes:
a memory 81;
a processor 82; and
a computer program;
wherein the computer program is stored in the memory 81 and configured to be executed by the processor 82 to implement any of the channel setup methods applied to group communications as described above.
The present embodiment also provides a computer-readable storage medium, having stored thereon a computer program,
the computer program is executed by a processor to implement any of the channel setup methods applied to group communications as described above.
The present embodiment also provides a computer program comprising program code which, when run by a computer, performs any of the channel establishment methods as described above for group communication.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (12)
1. A channel establishment method for group communication, comprising:
receiving group information sent by User Equipment (UE), wherein the group information comprises a current group and stores the corresponding relation between the UE and the group information;
when the group is established, a single-cell broadcast service channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) is established only for the UE receiving or preparing to receive the group according to the corresponding relation, wherein the UE receiving or preparing to receive the group is the UE taking the group as the current group.
2. The method as recited in claim 1, further comprising:
acquiring the state of the UE, and adjusting the network connection state of the UE according to the state;
the network connection state includes any one of the following states:
radio resource control deactivation (Radio Resource Control inActive, RRC inActive), radio resource control IDLE (Radio Resource Control IDLE, RRC IDLE), radio resource control connection (Radio Resource Control connected, RRC connected).
3. The method of claim 2, wherein establishing the SC-MTCH channel for the UEs receiving or ready to receive the group according to the correspondence comprises:
the wireless access network (Radio Access Network, RAN) determines the network connection state as RRC inActive or RRC connected first connection state UE which is receiving the group or is ready to receive according to the corresponding relation and the network connection state of the UE;
the RAN establishes an SC-MTCH channel for each first connection state UE on a Bandwidth Part (BWP).
4. The method of claim 2, wherein establishing the SC-MTCH channel for the UEs receiving or ready to receive the group according to the correspondence comprises:
a core network access and mobility management function (Core Access and Mobility Management Function, AMF) determines, according to the correspondence and a network connection state of the UE, that the network connection state is a first IDLE state UE of the RRC IDLE that is receiving or is ready to receive the group;
the AMF determines the RAN to which the first idle state UE belongs and establishes an SC-MTCH channel for each first idle state UE in an Initial bandwidth portion (Initial Bandwidth Part, initial BWP) by the RAN to which the first idle state UE belongs.
5. The method of claim 2, wherein the group information further comprises a listening group;
the method further comprises the steps of:
and establishing a Single Cell multicast control channel (SC-MCCH) for the UE monitoring the group according to the corresponding relation.
6. The method of claim 5, wherein the establishing the SC-MCCH channel for the UEs listening to the group according to the correspondence comprises:
the RAN determines a second connection state UE of which the network connection state is RRC inActive or RRC connected to monitor the group according to the corresponding relation and the network connection state of the UE;
the RAN establishes an SC-MTCH channel for each second connectivity state UE on BWP.
7. The method of claim 5, wherein the establishing the SC-MCCH channel for the UEs listening to the group according to the correspondence comprises:
AMF determines the network connection state as RRC IDLE according to the corresponding relation and the network connection state of the UE to monitor the second IDLE state UE of the group;
the AMF determines the RAN to which the second idle state UE belongs, and establishes an SC-MTCH channel of each second idle state UE in the Initial BWP by the RAN to which the second idle state UE belongs.
8. The method according to any of claims 1-7, wherein the AMF receives and records group information sent by the UE, and sends the correspondence between the UE and the group information to the base station.
9. The method of claim 8 wherein the AMF sends the group information of the UE to the base station if the network connection state of the UE is adjusted from RRC IDLE to rrc_connected and the base station recovers the information of the UE.
10. A channel setup apparatus for group communication, comprising:
a receiving unit, configured to receive group information sent by a User Equipment (UE), where the group information includes a current group, and store a correspondence between the UE and the group information;
and a channel establishing unit, configured to establish, according to the correspondence, a single-cell broadcast traffic channel (single cell MBMS Traffic Channel, abbreviated as SC-MTCH) only for UEs that are receiving or preparing to receive the group, where the UEs that are receiving or preparing to receive the group are UEs that use the group as a current group.
11. A network device, comprising:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-9.
12. A computer-readable storage medium, having a computer program stored thereon,
the computer program being executable by a processor to implement the method of any one of claims 1-9.
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