CN114727230A - Information transmission method and device - Google Patents

Information transmission method and device Download PDF

Info

Publication number
CN114727230A
CN114727230A CN202110008600.2A CN202110008600A CN114727230A CN 114727230 A CN114727230 A CN 114727230A CN 202110008600 A CN202110008600 A CN 202110008600A CN 114727230 A CN114727230 A CN 114727230A
Authority
CN
China
Prior art keywords
control channel
broadcast service
cell
multicast
multicast broadcast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110008600.2A
Other languages
Chinese (zh)
Other versions
CN114727230B (en
Inventor
魏立梅
袁乃华
陈迎
朱玉梅
周志宏
范晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu TD Tech Ltd
Original Assignee
Chengdu TD Tech Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu TD Tech Ltd filed Critical Chengdu TD Tech Ltd
Priority to CN202110008600.2A priority Critical patent/CN114727230B/en
Publication of CN114727230A publication Critical patent/CN114727230A/en
Application granted granted Critical
Publication of CN114727230B publication Critical patent/CN114727230B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • 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

Abstract

The application provides an information transmission method and device, and the method comprises the following steps: determining the service quality requirement of the service type of each multicast broadcast service; determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service; based on the modification period and repetition period of each multicast broadcast service, in a cell, sending configuration information of point-to-multipoint bearing of each multicast broadcast service through a control channel, and sending dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel. Compared with the prior art, the method and the device have the advantages that the modification period and the repetition period are configured for each service type of the broadcast multicast service independently, and the problems of large consumption of wireless resources and power consumption of user equipment caused by the fact that the uniformly configured modification period and repetition period are adopted to send the configuration information of point-to-multipoint bearers of various types of multicast broadcast services are solved.

Description

Information transmission method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.
Background
With the continuous development of wireless communication technology, New Radio Access (NR) systems have come into people's lives. To provide Multicast and Broadcast Service (MBS) in NR cells, Release 17Work Item (R17 WI) was set up in The 3rd Generation Partnership Project (3 GPP) Radio Access Network (RAN) in year 20112 in The global meeting of Radio Access Network (RAN): NR MBS.
As shown in fig. 1, the architecture of the MBS in the NR system is composed of an MBS server, a 5G Core Network (5 GC), a Next Generation radio access Network (NG-RAN), and a User Equipment (UE). The NG-RAN may be denoted by gNB.
The MBS server provides a broadcast service and a multicast service. For each broadcast/multicast service, the MBS server transmits user plane data and control plane information of the service to the 5GC through a user plane interface and a control plane interface between the 5GC and the MBS server, respectively.
The 5GC provides a user plane data transmission path and a control plane information transmission path for the broadcast/multicast service from the MBS server, and transmits the user plane data and the control plane information of the broadcast/multicast service to the gNB through the two paths respectively.
And the gNB determines the NR cells for transmitting the broadcast/multicast service according to the control plane information of the broadcast/multicast service from the core network, and transmits the broadcast/multicast service in the corresponding NR cells.
For a broadcast service, the gNB transmits the broadcast service in a Point-to-Multipoint (PTM) bearer in a corresponding NR Cell, and broadcasts configuration Information of the PTM bearer of the broadcast service through a Single-Cell Multicast Control Channel (SC-MCCH) or a MBS dedicated System Information Block (SIB), and the UE can establish the PTM bearer according to the configuration Information of the PTM bearer of the broadcast service and receive the broadcast service through the bearer.
For multicast service, before the multicast service is transmitted by a corresponding NR cell, the gNB makes UEs allowed to receive the multicast service enter a Radio Resource Control-Connected state (RRC) through paging, and the gNB determines to transmit the multicast service by a PTM bearer and/or a Point-to-Point (PTP) bearer according to information such as the number and location of the UEs receiving the multicast service in the cell. When the gNB transmits the multicast service in the PTM bearer, the configuration information of the PTM bearer of the multicast service can be broadcasted through SC-MCCH or MBS special SIB. And the UE establishes the PTM bearer according to the configuration information of the PTM bearer of the multicast service and receives the multicast service through the bearer.
In NR MBS, there are many service types of MBS, including: vehicle-to-electrical (V2X) services, software download services, public safety services, and television services, among others. MBS of different Service types have different Quality of Service (QOS) requirements: some MBS has QOS requirements with high requirements on reliability and is sensitive to time delay; some MBS's QOS requirements have high reliability requirements but are not sensitive to delay; some MBS QOS requirements are not high for reliability, but are sensitive to latency; some MBS's QOS requirements have low requirements on reliability and are not sensitive to time delay.
Currently, when configuration information of PTM (packet transport protocol) bearer of each MBS in a cell is sent through an SC-MCCH (single-point control channel) or special SIB (single-neighbor message service) of the MBS, a uniformly configured modification period and a uniformly configured repetition period are adopted. The configuration information of the PTM bearer of each MBS can only be changed from the initial position of one modification period, and the configuration information of the PTM bearer of each MBS in each repetition period in one modification period is repeatedly transmitted through SC-MCCH or special SIB of the MBS.
In order to meet the QOS requirement of the MBS sensitive to the time delay, when the SC-MCCH is adopted to send the configuration information carried by the PTM of the MBS, the modification period uniformly configured for the SC-MCCH and the repeat period uniformly configured are usually smaller.
When the configuration information of the PTM bearer of the MBS is sent by using the MBS dedicated SIB, since all SIBs (not including SIB1) in the cell use the modification period configured in a unified manner, in order to meet the QOS requirement of the MBS sensitive to delay, it is necessary to configure a smaller modification period for all SIBs in the cell, and it is necessary to configure a smaller repetition period for the MBS dedicated SIB.
When there is new MBS in the cell to send by PTM load, and needs to broadcast the configuration information of PTM load of the new MBS through SC-MCCH or special SIB of MBS, the gNB will send SC-MCCH change notice or system message change notice in the cell.
When the SC-MCCH is adopted to send the configuration information of the PTM bearer of the MBS, the SC-MCCH modification notice is sent in the latest modification period; when the SC-MCCH change notice is sent in advance, the configuration information of the PTM bearer of the newly-added MBS is sent through the SC-MCCH from the next modification period; and when the SC-MCCH change notice does not need to be sent in advance, starting to send the configuration information of the PTM bearer of the newly-added MBS through the SC-MCCH from the latest modification period. The SC-MCCH change notification is repeatedly transmitted in each repetition period during the corresponding modification period.
When the special SIB of MBS is adopted to send the configuration information of PTM bearing of MBS, the system message change notice is sent in the latest modification period, and the configuration information of PTM bearing of newly added MBS is sent through the special SIB of MBS from the next modification period.
The SC-MCCH/MBS special SIB and SC-MCCH change notification/system message change notification are sent through a smaller modification period and a smaller repetition period which are configured in a unified manner, so that the QOS requirement of the time delay sensitive MBS and the QOS requirement of the MBS with high reliability requirement can be met, but the MBS with insensitive time delay and low reliability requirement are sent through the smaller modification period and the smaller repetition period, so that the consumption of wireless resources in an NR cell is increased, and meanwhile, the UE monitors the SC-MCCH/MBS special SIB and SC-MCCH change notification/system message change notification based on the smaller modification period and the smaller repetition period, so that the power consumption of the UE side is also increased.
Disclosure of Invention
The application provides an information transmission method and an information transmission device, which are used for solving the technical problems of high consumption of wireless resources and high power consumption of a user equipment side in the prior art.
A first aspect of the present application provides an information transmission method applied to a radio access network, where the method includes:
determining the service quality requirement of the service type of each multicast broadcast service;
determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service;
based on the modification period and the repetition period of each multicast broadcast service, in a cell, sending configuration information of point-to-multipoint bearer of each multicast broadcast service through a control channel, and sending dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel;
when there is a new multicast broadcast service sent by point-to-multipoint bearer in the cell, sending a change notification in the cell, and sending configuration information of the point-to-multipoint bearer of the new multicast broadcast service in the cell through the control channel.
In an optional embodiment, the control channel is a single-cell multicast control channel, and the sending, in a cell, configuration information of a point-to-multipoint bearer for each multicast broadcast service through the control channel based on the modification period and the repetition period of each multicast broadcast service includes:
determining the position for sending the single-cell multicast control channel based on the modification period and the repetition period of each multicast broadcast service;
determining configuration information carried on the single-cell multicast control channel at each of the positions for transmitting the single-cell multicast control channel;
and sending the single-cell multicast control channel in the cell at each of the positions for sending the single-cell multicast control channel, wherein the configuration information is borne on the single-cell multicast control channel, and the single-cell multicast control channel is transmitted through a dedicated downlink shared channel and a dedicated physical downlink shared channel.
In an optional implementation manner, the sending, in a cell, dynamic scheduling information of a dedicated physical downlink shared channel for a control channel in a downlink control information format carried on a physical downlink control channel includes:
and sending a physical downlink control channel scrambled by a single-cell wireless network temporary identifier for cyclic redundancy check in a cell, wherein the format of downlink control information carried on the physical downlink control channel is dynamic scheduling information of a physical downlink shared channel special for a single-cell multicast control channel.
In an optional implementation manner, before transmitting the single-cell multicast control channel and the physical downlink control channel in a cell, the method further includes:
broadcasting the configuration information of the single-cell multicast control channel in a cell through a system information block special for the single-cell multicast control channel, wherein the scheduling information of the system information block special for the single-cell multicast control channel is carried in a system information block 1;
the single cell multicast control channel dedicated system information blocks may be area specific, in which each cell has the same content for the single cell multicast control channel dedicated system information blocks.
In an optional embodiment, the sending a change notification in a cell when there is a new multicast broadcast service sent in a point-to-multipoint bearer in the cell includes:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
the change notification is sent in each repetition period of the most recent one of the modification periods.
In an alternative embodiment, said sending said change notification in each repetition period of the latest modification period comprises:
a single cell informs a wireless network temporary identifier of a physical downlink control channel scrambled by a cyclic redundancy check of a downlink control information format carried on the physical downlink control channel to send a change notice, a control resource set and a search space used by the physical downlink control channel are control resource sets and search spaces adopted by the physical downlink control channel scrambled by the single cell wireless network temporary identifier for sending the cyclic redundancy check, and the single cell informs the wireless network temporary identifier of the change notice of the single cell multicast control channel;
or, the change notice is carried in a downlink control information format carried on a physical downlink control channel scrambled by a single-cell wireless network temporary identifier by adopting cyclic redundancy check;
or, the change notification is carried by a media access control unit, and the media access control unit sends the change notification through a single-cell multicast control channel.
In an optional implementation manner, the sending, in the cell, the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through the control channel includes:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
and transmitting the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through a single-cell multicast control channel from the latest modification period or from the next modification period.
In an optional implementation manner, the control channel is a multicast broadcast service dedicated broadcast control channel, the multicast broadcast service dedicated broadcast control channel is configured to carry a multicast broadcast service dedicated system information block, the multicast broadcast service dedicated system information block carries configuration information of a point-to-multipoint bearer of each multicast broadcast service, and the configuration information of the point-to-multipoint bearer of each multicast broadcast service is sent through the control channel in a cell based on a modification cycle and a repetition cycle of each multicast broadcast service, including:
determining the position for sending the special system information block of the multicast broadcast service based on the modification period and the repetition period of each multicast broadcast service;
determining configuration information carried on the multicast broadcast service special system information block at each of the positions for transmitting the multicast broadcast service special system information block;
and transmitting the special system information block for the multicast broadcast service in the cell at each position of the positions for transmitting the special system information block for the multicast broadcast service, wherein the special system information block for the multicast broadcast service bears the configuration information, the special system information block for the multicast broadcast service is transmitted through a special broadcast control channel for the multicast broadcast service, and the special broadcast control channel for the multicast broadcast service is transmitted through a special downlink shared channel and a special physical downlink shared channel.
In an optional implementation manner, the sending, in a cell, dynamic scheduling information of a dedicated physical downlink shared channel for a control channel in a downlink control information format carried on a physical downlink control channel includes:
and sending a physical downlink control channel scrambled by a system information wireless network temporary identifier for cyclic redundancy check in a cell, wherein the format of downlink control information borne on the physical downlink control channel is dynamic scheduling information of a dedicated physical downlink shared channel of the multicast broadcast service dedicated broadcast control channel, and the multicast broadcast service dedicated broadcast control channel bears a multicast broadcast service dedicated system information block.
In an optional implementation manner, before the sending the dedicated system information block for multicast broadcast service and the physical downlink control channel in the cell, the method further includes:
the system information block 1 is used for bearing the scheduling information of the system information block special for the multicast broadcast service, the scheduling information of the system information block special for the multicast broadcast service can be special for the region, and the scheduling information of the system information block special for the multicast broadcast service in each cell in the region is the same.
In an optional embodiment, the sending a change notification in a cell when there is an additional multicast broadcast service sent in a point-to-multipoint bearer in the cell includes:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
a change notification is sent in each repetition period in the last modification period.
In an alternative embodiment, said sending the change notification in each repetition period of the latest modification period comprises:
and informing the radio network of the downlink control information format carried on the physical downlink control channel scrambled by the temporary identifier by using a single cell through cyclic redundancy check to send a change notice.
In an optional implementation manner, the sending, in the cell, the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through the control channel includes:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
and transmitting the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through a multicast broadcast service dedicated system information block from the latest modification period or from the next modification period.
In an optional implementation manner, the configuration information of the point-to-multipoint bearer of each multicast broadcast service may be specific to an area, and the configuration information of the point-to-multipoint bearer of the multicast broadcast service is the same for each cell in the area.
A second aspect of the present application provides an information transmission apparatus, the apparatus including:
the processing module is used for determining the service quality requirement of the service type of each multicast broadcast service; determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service;
a sending module, configured to send, in a cell, configuration information of point-to-multipoint bearer of each multicast and broadcast service through a control channel based on a modification period and a repetition period of each multicast and broadcast service, and send dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel; when there is a new multicast broadcast service sent by point-to-multipoint bearer in the cell, sending a change notification in the cell, and sending configuration information of the point-to-multipoint bearer of the new multicast broadcast service in the cell through the control channel.
In an optional implementation manner, the control channel is a single-cell multicast control channel, and the processing module is further configured to determine a location for sending the single-cell multicast control channel based on a modification period and a repetition period of each multicast broadcast service; determining configuration information carried on the single-cell multicast control channel at each of the positions for transmitting the single-cell multicast control channel;
the sending module is further configured to send the single-cell multicast control channel in a cell at each of the locations where the single-cell multicast control channel is sent, where the single-cell multicast control channel carries the configuration information.
In an optional implementation manner, the control channel is a multicast broadcast service dedicated broadcast control channel, and the processing module is further configured to determine a location for sending the multicast broadcast service dedicated system information block based on a modification period and a repetition period of each multicast broadcast service; determining configuration information carried on the multicast broadcast service special system information block at each of the positions for transmitting the multicast broadcast service special system information block;
the sending module is further configured to send the multicast and broadcast service dedicated system information block in a cell at each of the locations where the multicast and broadcast service dedicated system information block is sent, where the multicast and broadcast service dedicated system information block carries the configuration information, the multicast and broadcast service dedicated system information block is transmitted through the multicast and broadcast service dedicated broadcast control channel, and the multicast and broadcast service dedicated broadcast control channel is transmitted through a dedicated downlink shared channel and a dedicated physical downlink shared channel.
A third aspect of the present application provides an electronic device comprising: a processor and a memory;
the memory is used for storing a computer program;
the processor is configured to invoke and execute the computer program stored in the memory to perform the method according to the first aspect.
A fourth aspect of the present application provides a chip comprising: a processor for calling and running the computer program from the memory so that the device on which the chip is installed performs the method according to the first aspect.
A fifth aspect of the present application provides a computer-readable storage medium for storing a computer program for causing a computer to perform the method according to the first aspect.
A sixth aspect of the application provides a computer program product comprising computer program information to make a computer execute the method according to the first aspect.
A seventh aspect of the present application provides a computer program for causing a computer to perform the method according to the first aspect.
The information transmission method and device provided by the application firstly determine the service quality requirement of the service type of each multicast broadcast service, then determining the modification period and the repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service, then based on the modification period and the repetition period of each multicast broadcast service, transmitting configuration information of a point-to-multipoint bearer for each multicast broadcast service through a control channel within a cell, the dynamic scheduling information of the dedicated physical downlink shared channel of the control channel is transmitted by the downlink control information format carried on the physical downlink control channel, and finally when the cell has the newly added multicast broadcast service carried and transmitted by the point-to-multipoint, and sending a change notice in the cell, and sending configuration information of point-to-multipoint bearer of the newly added multicast broadcast service in the cell through a control channel. Compared with the prior art, the modification period and the repetition period are configured for each service type of the broadcast multicast service based on the service quality requirement of each service type of the broadcast multicast service, and the problems of large consumption of wireless resources and power consumption of a user equipment side caused by the adoption of the uniformly configured modification period and the uniformly configured repetition period for sending are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram illustrating the architecture of MBS in NR system;
fig. 2 is a schematic flowchart of an information transmission method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of another information transmission method according to an embodiment of the present application;
fig. 4 is a schematic flowchart of another information transmission method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the architecture of the MBS in the NR system shown in fig. 1, when the configuration information of the PTM bearer of each MBS in a cell is sent through an SC-MCCH/MBS dedicated SIB, a uniformly configured modification period and a uniformly configured repetition period are used. In order to meet the QOS requirements of each MBS service type, a smaller modification period and a smaller repetition period are typically configured for the SC-MCCH/MBS dedicated SIB. The specific SIB of SC-MCCH/MBS and the specific SIB of SC-MCCH modification notification/system message modification notification are sent through the smaller modification period and the smaller repetition period which are configured in a unified manner, so that the QOS requirement of MBS with high time delay sensitivity and high reliability requirement can be met, but the MBS with low time delay sensitivity and low reliability requirement is sent, the specific SIB of SC-MCCH/MBS and the specific SIB of SC-MCCH modification notification/system message modification notification are sent through the smaller modification period and the smaller repetition period, so that the consumption of wireless resources in an NR cell is increased, and meanwhile, the UE monitors the specific SIB of SC-MCCH/MBS and the specific SIB of SC-MCCH modification notification/system message modification notification based on the smaller modification period and the smaller repetition period, so that the power consumption of UE is also increased.
In order to solve the above problem, embodiments of the present application provide an information transmission method and apparatus to reduce consumption of radio resources and power consumption of a UE. In the method and the device, the modification period and the repetition period are configured for each service type of the multicast broadcast service based on the service quality requirement of each service type of the multicast broadcast service, so that the problems of large consumption of wireless resources and power consumption of UE caused by the adoption of the uniformly configured modification period and the uniformly configured repetition period are solved.
The user equipment in the embodiment of the present application may be a wireless terminal in industrial control (industrial control), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a mobile phone (mobile phone), a tablet computer (pad), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in a smart grid (smart grid), a wireless terminal in a smart home (smart home), or the like in real life.
In the present application, a method and an apparatus for transmitting information are described with an exemplary gNB as a radio access network.
It should be noted that the architecture of the MBS in the NR system shown in fig. 1 does not limit the application scope of the present application, and the information transmission method provided in the embodiment of the present application may also be applied to other information transmission systems.
The following takes MBS transmission in an NR cell as an example, and details a technical solution of the embodiment of the present application with specific embodiments. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a flowchart illustrating an information transmission method according to an embodiment of the present disclosure, where an execution subject of the embodiment is a radio access network (gNB), and the execution subject relates to a specific process of information transmission. As shown in fig. 2, the method includes:
s101, determining the service quality requirement of each service type of the multicast broadcast service.
In NR MBS, there are many service types of MBS, including: V2X service, software download service, public safety service, TV service, etc. MBS of different service types have different QOS requirements: some MBS has QOS requirements with high requirements on reliability and is sensitive to time delay; some MBS's QOS requirements have high reliability requirements but are not sensitive to delay; some MBS QOS requirements are not high for reliability but are sensitive to latency; some MBS's QOS requirements have low requirements on reliability and are not sensitive to time delay.
S102, determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service.
Specifically, N is used for representing the number of the MBS service types, the modification period and the repetition period are configured for the nth MBS service type based on the QOS requirement of the nth MBS service type, Tm (N) and Tr (N) are respectively used for representing the modification period and the repetition period configured for the nth MBS service type, and Tm (N) and Tr (N) meet the following formula:
tm (n) ═ t (n) × tr (n) (formula 1)
In the above formula, T (n) is a positive integer, Tm (n) and Tr (n) are in the unit: and a radio frame, N is 1,2, … and N.
Preferably, the first and second liquid crystal films are made of a polymer,
t (n) 2^ m1 (formula 2)
In the above formula, m1 is a non-negative integer;
preferably, the first and second liquid crystal films are made of a polymer,
tr (n) 2^ m2 (formula 3)
In the above formula, m2 is a non-negative integer;
based on the above formula, the value range of tr (n)/tm (n) may be:
1 radio frame (10ms), 2 radio frames (20ms), 4 radio frames (40ms), 8 radio frames (80ms), 16 radio frames (160ms), 32 radio frames (320ms), 64 radio frames (640ms),128 radio frames (1280ms), 256 radio frames (2560 ms).
If necessary, the value range of Tr (n)/Tm (n) can be enlarged, so that the value of Tr (n) and the value of Tm (n) are more than or equal to 512 wireless frames (5120ms) on the premise of meeting the formulas 1,2 and 3.
Specifically, when the QOS requirement of the MBS indicates that the MBS of the type is a time delay sensitive MBS, a smaller modification period is configured for the MBS of the service type so as to meet the harsh requirement of the MBS of the type on time delay; when the QOS requirement of the MBS indicates that the MBS of the type is insensitive to time delay, a larger modification period is configured for the MBS of the service type; when the QOS requirement of the MBS indicates that the MBS of the type has high requirement on the reliability, a smaller repetition period can be configured for the MBS of the type so as to increase the repeated sending times of the configuration information borne by the PTM of the MBS of the type under the condition of fixed modification period and improve the receiving performance of the UE on the configuration information borne by the PTM of the MBS of the type; when the QOS requirement of the MBS indicates that the reliability requirement of the MBS of the type is not high, a larger repetition period can be configured for the MBS of the type.
S103, based on the modification period and the repetition period of each multicast broadcast service, in a cell, sending the configuration information of point-to-multipoint bearing of each multicast broadcast service through a control channel, and sending the dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel.
Based on the modification period and the repetition period of each multicast broadcast service, in a cell, sending configuration information of point-to-multipoint bearer of each multicast broadcast service through a control channel specifically includes:
determining each position for sending the control channel based on the modification period and the repetition period of each multicast broadcast service, determining the configuration information carried on the control channel at each position for sending the control channel, sending the control channel at each position for sending the control channel, and carrying the corresponding configuration information on the control channel.
The Control Channel is not limited in this application, and may be, for example, a single cell multicast Control Channel SC-MCCH and a Broadcast Control Channel (BCCH) dedicated to multicast Broadcast service.
Optionally, when the control channel is a single-cell multicast control channel, determining a position for sending the single-cell multicast control channel based on a modification period and a repetition period of each multicast broadcast service; determining configuration information carried on a single-cell multicast control channel at each of the positions where the single-cell multicast control channel is transmitted; and at each position of the positions for sending the single-cell multicast control Channel, sending the single-cell multicast control Channel in the cell, wherein the single-cell multicast control Channel carries corresponding configuration information, and the single-cell multicast control Channel is transmitted through a dedicated Downlink Shared Channel (DL-SCH) and a dedicated Physical Downlink Shared Channel (PDSCH).
Further, a physical Downlink Control channel PDCCH scrambled by a Single-Cell Radio Network Temporary Identifier (SC-RNTI) for cyclic redundancy check is sent in the Cell, and a format of Downlink Control Information (DCI) carried on the physical Downlink Control channel PDCCH is dynamic scheduling Information of a dedicated physical Downlink shared channel of a Single-Cell multicast Control channel.
In order to ensure that the user equipment can receive the control channel, configuration information of the control channel needs to be transmitted to the user equipment. Illustratively, the configuration information of the single-cell multicast control channel is broadcasted in the cell through a single-cell multicast control channel dedicated system information block SIB, the scheduling information of the single-cell multicast control channel dedicated system information block is carried in a system information block 1, the single-cell multicast control channel dedicated system information block may be area-specific, the system information blocks dedicated to the single-cell multicast control channel in each cell in the area have the same content (in other words, the configuration information of the SC-MCCH in each cell in the area is the same, when the UE moves from the source cell to the target cell, the UE can directly receive the SC-MCCH in the target cell according to the configuration information of the SC-MCCH obtained in the source cell, without first receiving the SC-MCCH dedicated SIB in the target cell to obtain the configuration information of the SC-MCCH in the target cell).
Optionally, when the control channel is a multicast broadcast control channel dedicated to multicast broadcast services, determining a location for transmitting a system information block dedicated to multicast broadcast services based on a modification period and a repetition period of each multicast broadcast service, determining configuration information carried on the multicast broadcast service specific system information block at each of the locations at which the multicast broadcast service specific system information block is transmitted, and transmitting the special system information block for the multicast broadcast service in the cell at each position of the positions for transmitting the special system information block for the multicast broadcast service, wherein the special system information block for the multicast broadcast service bears corresponding configuration information, the special system information block for the multicast broadcast service is transmitted through a special broadcast control channel for the multicast broadcast service, and the special broadcast control channel for the multicast broadcast service is transmitted through a special downlink shared channel DL-SCH and a special physical downlink shared channel PDSCH.
The special broadcast control channel for the multicast broadcast service is used for bearing a special system information block for the multicast broadcast service, and the special system information block for the multicast broadcast service bears the configuration information of point-to-multipoint bearing of each multicast broadcast service.
Further, a physical downlink control channel of a System Information Radio Network Temporary Identifier scrambling (SI-RNTI) for cyclic redundancy check is transmitted in the cell, a format of downlink control Information carried on the physical downlink control channel is dynamic scheduling Information of a dedicated physical downlink shared channel of a multicast broadcast service dedicated broadcast control channel, and a multicast broadcast service dedicated broadcast control channel carries a multicast broadcast service dedicated System Information block.
In order to ensure that the user equipment can receive the control channel, scheduling information of the control channel needs to be transmitted to the user equipment. Illustratively, by carrying the scheduling information of the MBS-dedicated system information block through the system information block 1, the scheduling information of the multicast-broadcast-service-dedicated system information block may be region-specific, and the scheduling information of the multicast-broadcast-service-dedicated system information block (MBS-dedicated SIB) in each cell in the region is the same (in other words, when the UE moves from the source cell to the target cell, the UE may directly receive the MBS-dedicated SIB at the target cell according to the scheduling information of the MBS-dedicated SIB obtained at the source cell, without first receiving the SIB1 at the target cell to obtain the scheduling information of the MBS-dedicated SIB at the target cell).
The configuration information of the point-to-multipoint bearer of each multicast broadcast service may be area-specific, and the configuration information of the point-to-multipoint PTM bearer of the same multicast broadcast service in each cell in the area is the same (in other words, when both the source cell and the target cell provide one MBS, the UE may directly receive the corresponding MBS in the target cell by using the configuration information of the PTM bearer of the MBS obtained in the source cell).
S104, when a new multicast broadcast service transmitted by the point-to-multipoint bearer exists in the cell, a change notice is transmitted in the cell, and the configuration information of the point-to-multipoint bearer of the new multicast broadcast service is transmitted in the cell through a control channel.
The embodiment of the application mainly provides two control channels: a single cell multicast control channel and a multicast broadcast service dedicated broadcast control channel. Accordingly, there are two methods of sending the change notification.
The first method, when the control channel is a single-cell multicast control channel, according to the service type of the newly added multicast broadcast service, determines each modification period and each repetition period of the configuration information of the point-to-multipoint bearer that can be used for sending the newly added multicast broadcast service, and sends a change notification in each repetition period in the latest modification period.
Specifically, a Single Cell Notification Radio Network Temporary Identifier (SC-N-RNTI) is used for notifying a downlink control information format carried on a physical downlink control channel scrambled by the Radio Network Temporary Identifier through cyclic redundancy check to send a change Notification, a control resource set and a search space used by the physical downlink control channel are used for sending the control resource set and the search space adopted by the physical downlink control channel scrambled by the Single Cell Radio Network Temporary Identifier for cyclic redundancy check, and the Single Cell Notification Radio Network Temporary Identifier is used for identifying a Single Cell multicast control channel change Notification; or, the downlink control information format carried on the physical downlink control channel scrambled by the single-cell wireless network temporary identifier for cyclic redundancy check carries a change notification; or, the change notice is carried by the media access control unit, and the media access control unit sends the change notice through a single-cell multicast control channel.
Then, according to the service type of the newly added multicast broadcast service, determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service, and sending the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through a single-cell multicast control channel from the latest modification period or from the next modification period.
In the second case, when the control channel is a multicast broadcast service dedicated broadcast control channel, determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service; a change notification is sent in each repetition period in the last modification period.
Specifically, a single cell is used for notifying a wireless network of sending a change notification in a downlink control information format carried on a physical downlink control channel scrambled by a temporary identifier through cyclic redundancy check.
Then, according to the service type of the newly added multicast broadcast service, determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service, and sending the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through a system information block special for the multicast broadcast service from the latest modification period or from the next modification period.
The configuration information of the point-to-multipoint bearer of each multicast broadcast service may be area-specific, and the configuration information of the point-to-multipoint bearer of the same multicast broadcast service in each cell in an area is the same.
In the method provided by the application, the QOS requirement of each MBS service type is determined, a modification period and a repetition period are independently configured for each MBS service type based on the QOS requirement of each MBS service type, and MBS with different QOS requirements can have different modification periods and different repetition periods; for any MBS service type, sending the configuration information of the PTM bearer of the MBS service type through SC-MCCH/MBS special SIB, and sending the configuration information of the PTM bearer of each MBS of the service type by adopting a modification period and a repetition period which are independently configured for the MBS service type during sending; when a newly added MBS is transmitted by PTM bearing in a cell and the configuration information of the PTM bearing of the newly added MBS needs to be broadcasted through SC-MCCH/MBS special SIB, determining a modification period and a repetition period which can be used for transmitting the configuration information of the PTM bearing of the MBS according to the QOS requirement of the MBS, transmitting an SC-MCCH change notice/MBS special SIB change notice in the latest modification period, and transmitting the configuration information of the PTM bearing of the newly added MBS through SC-MCCH/MBS special SIB from the latest modification period or the next modification period. In the method, the SC-MCCH change notice/the special SIB change notice for MBS is used for indicating that the current cell has the newly added MBS carried and transmitted by PTM; the MBS special SIB change notice is carried to the UE through the PDCCH scrambled by the SC-N-RNTI, and when the cell has an added MBS carried and transmitted by PTM, the system message change notice does not need to be sent.
Compared with the prior art, the method and the device have the advantages that the modification period and the repetition period are configured for the service type of each multicast broadcast service based on the service quality requirement of the service type of each multicast broadcast service, and the problems of large wireless resource consumption and power consumption of user equipment caused by the adoption of the uniformly configured modification period and the uniformly configured repetition period are solved.
Based on the above embodiment, a case where the control channel is a single-cell multicast control channel will be described below with reference to fig. 3. Fig. 3 is a schematic flow chart of another information transmission method provided in the embodiment of the present application, and as shown in fig. 3, the method includes:
s201, determining the service quality requirement of each service type of the multicast broadcast service.
S202, determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service.
The technical terms, technical effects, technical features, and alternative embodiments of S201-S202 can be understood with reference to S101-S102 shown in fig. 2, and repeated descriptions thereof will not be repeated here.
S203, determining the position for sending the SC-MCCH.
Selecting a minimum value from a repetition period configured for each MBS service type, representing the minimum value by Trmin, and then needing to send the SC-MCCH in each repetition period of radio frames with the length of Trmin, wherein the frame number of an initial radio frame used for sending the SC-MCCH in each repetition period satisfies the following formula:
SFN MOD Trmin ═ OFFSET (equation 4)
In the above formula, the OFFSET is a radio frame OFFSET, and is used to determine the position of the starting radio frame for transmitting the SC-MCCH in each repetition period of the radio frame with the length of Trmin.
Based on formula 4, in each repetition period of radio frames with a length of Trmin, the SC-MCCH is transmitted in radio frames satisfying formula 4 by occupying P1 ═ S1 ═ L1 × B consecutive slots from the time slot with a time slot index of TSNO, PTM configuration information is used to represent the configuration information of the PTM bearer of each MBS carried on the SC-MCCH, S1 is the number of segments of the PTM configuration information when the PTM configuration information needs to be transmitted in segments, S1< ═ S, S is the maximum number of segments of the PTM configuration information, L1 is the number of times of repeated transmission of the PTM configuration information, and B is the number of beams used by SS/PBCH blocks in the NR cell.
Based on the above processing, in each repetition period of the radio frame with the length of Trmin, starting from the time slot with the time slot index of TSNO in the radio frame with the frame number satisfying formula 4, each segment of the PTM configuration information is transmitted using B beams, and each segment is repeatedly transmitted L1 times. The content included in the PTM configuration information may be different in each repetition period, and the number of segments of the PTM configuration information may also be different.
And S204, determining the information carried on the SC-MCCH at the position of sending the SC-MCCH.
For the nth MBS service type, when the repetition period of the service type is Trmin, in each repetition period of sending the SC-MCCH determined in step three, the SC-MCCH carries the configuration information of the PTM bearer of the MBS of the service type when sending the SC-MCCH, where N is 1,2, …, N.
For the nth MBS service type, when the repetition period of the service type is not Trmin, calculating the frame number of the starting radio frame for sending the configuration information carried by the PTM of the MBS of the nth MBS service type according to the following formula in each repetition period of tr (N) radio frames, where N is 1,2, …, N:
SFN MOD Tr (n) ═ OFFSET (equation 5)
The location for transmitting the SC-MCCH determined according to formula 5 is a subset of the location for transmitting the SC-MCCH determined according to formula (4), i.e.: the position of the SC-MCCH for sending the configuration information of the PTM bearer of the MBS of the nth MBS service type is the subset of the position for sending the SC-MCCH determined in the step three.
Such as: and when tr (n) ═ Trmin, the SC-MCCH is transmitted at each position where the SC-MCCH is transmitted, which is determined in step 3, and the SC-MCCH carries the configuration information carried by the PTM of the MBS of the nth MBS service type.
For another example: when tr (n) ═ 4 × Trmin, the configuration information of the PTM bearer of the MBS of the nth MBS service type should be sent with tr (n) radio frames as a period, and the repetition period of each radio frame with the length of tr (n) includes the repetition period of 4 radio frames with the length of Trmin, that is, each repetition period for sending the configuration information of the PTM bearer of the nth MBS service type includes 4 positions for sending the SC-MCCH, the first position for transmitting the SC-MCCH among the 4 positions for transmitting the SC-MCCH is the position for transmitting the configuration information carried by the PTM of the MBS of the nth MBS service type determined according to formula 5, the configuration information of PTM load of MBS of the nth MBS service type is loaded on the SC-MCCH sent at the position, and the SC-MCCHs sent at the other three SC-MCCHs do not bear the configuration information of the PTM bearer of the MBS of the nth MBS service type.
S205, the SC-MCCH configuration information is broadcasted in the NR cell through the SC-MCCH special SIB. The special SIB for SC-MCCH may be a region-specific SIB, and information carried on the SIB is the same in each cell in the corresponding region. The configuration information of the PTM bearer of an MBS that is carried on the SC-MCCH may also be zone-specific, and the configuration information of the PTM bearer of the MBS in each cell in the corresponding zone is the same. The scheduling information of the SC-MCCH specific SIB is carried in SIB 1.
Specifically, the SC-MCCH configuration information broadcasted through the SC-MCCH-specific SIB includes the following:
(1) SC-MCCH configuration information:
BWP configuration information: sending the configuration information of BWP of SC-MCCH;
configuration information of CORESET and search space: the system comprises a configuration information used for sending CORESET and a search space of a PDCCH scrambled by SC-RNTI for CRC, wherein DCI format on the PDCCH is dynamic scheduling information of SC-MCCH, and the CORESET and the search space are positioned on BWP sending the SC-MCCH;
modification period and repetition corresponding to each MBS service typeAnd (3) repeating the cycle: t ism(n)，Tr(N), N is 1, … …, N is the number of MBS service types;
OFFSET: a radio frame offset for determining a position of an initial radio frame for transmitting the SC-MCCH in each repetition period;
TSNO: sending a time slot subscript of a first time slot of the SC-MCCH;
the number of beams B (this parameter can also be derived by the UE itself) used by the Synchronization Signal/Physical Broadcast Channel (SS/PBCH) block;
the number of times of SC-MCCH repeated transmission in each repetition period is L1 (the parameter can also be carried to the UE through a DCI format on a PDCCH scrambled by SC-RNTI through CRC, and the SC-RNTI is used for identifying SC-MCCH on a Uu interface);
the maximum number of SC-MCCH segments S (this parameter does not have to be configured when the DCI format on PDCCH scrambled with SC-RNTI by CRC carries the number of SC-MCCH segments S1);
mode of sending SC-MCCH: mode 1 or mode 2 (the two modes are specifically defined as follows, when the mode of transmitting SC-MCCH is fixed to mode 1 or mode 2, the parameter does not need to be configured)
Timing difference T: in order to receive the SC-MCCH in each repetition period determined in step S203, the UE needs to monitor the PDCCH scrambled by the SC-RNTI for the CRC T time slots in advance with respect to the first time slot for transmitting the SC-MCCH in each repetition period, where the DCI format on the PDCCH is the dynamic scheduling information of the SC-MCCH in the corresponding time slot.
Specifically, the UE needs to receive the SC-MCCH from the timeslot whose timeslot index is TSNO in the radio frame determined by formula 4, and the UE needs to monitor the PDCCH scrambled by the SC-RNTI for the CRC T timeslots in advance with the timeslot whose index is TSNO as a reference, where the DCI format on the PDCCH is the dynamic scheduling information of the SC-MCCH in the corresponding timeslot.
(2) Configuration information of the SC-MCCH change notification:
the SC-MCCH change notification is repeatedly sent a number of times L2 within each repetition period;
the SC-MCCH change notification is transmitted on the BWP transmitting the SC-MCCH.
S206, the SC-MCCH is sent at each position for sending the SC-MCCH determined in the step S203, the SC-MCCH sent at each position bears the configuration information borne by the PTM of the MBS of the corresponding MBS service type, the PDCCH scrambled by the SC-RNTI for the CRC is sent, and the DCI format borne on the PDCCH is the dynamic scheduling information of the SC-MCCH.
Specifically, in each repetition period of the radio frames with the length of Trmin, the SC-MCCH is transmitted from the time slot with the time slot index TSNO in the radio frame with the frame number satisfying the formula (4). The number of segments of PTM configuration information when an SC-MCCH is transmitted in the current repetition period is denoted by S1, S1 ═ S, and the SC-MCCH is transmitted in the current repetition period occupying P1 ═ S1 × L1 ×) time slots, which includes the following two ways:
mode 1: dividing P1 time slots into L1 groups, each group is composed of B S1 continuous time slots, S1 segments of PTM configuration information are respectively transmitted in each group, and each segment is repeatedly transmitted for L1 times by adopting L1 groups of time slots.
Specifically, each group of time slots is further subdivided into S1 subgroups, each subgroup is composed of B consecutive time slots, and the S-th segment of the PTM configuration information is transmitted in B time slots corresponding to the S-th subgroup by using B beams, where S is 1,2, …, and S1. The B beams are B beams adopted by the SS/PBCH block, and the B beams cover the whole cell.
Mode 2: the P1 slots were divided into S1 groups, each group consisting of B x L1 consecutive slots, with group numbers 1 to S1. The S-th segment of the SC-MCCH is transmitted in the S-th group, S-1, 2, …, S1.
Specifically, each group of time slots is further subdivided into L1 subgroups, each subgroup is composed of B consecutive time slots, the same segment of PTM configuration information is repeatedly transmitted L1 times through L1 subgroups, and B beams, which are B beams adopted by the SS/PBCH block and cover the entire cell, are respectively used to transmit the corresponding segment in the B time slots corresponding to each subgroup.
Preferably, the number of segments of the PTM configuration information in each repetition period S1 may be indicated to the UE through a corresponding field in the DCI format on the PDCCH that is CRC-scrambled with the SC-RNTI.
Preferably, the transmission mode of the fixed SC-MCCH may be mode 1 or mode 2; when the mode 1 and the mode 2 are allowed to be adopted to transmit the SC-MCCH, the UE can be informed of the mode adopted when the SC-MCCH is transmitted in the current repetition period through one of the following three modes:
(1) taking an SC-MCCH transmission mode as one of SC-MCCH parameters to be carried to UE through a corresponding SIB, wherein the SC-MCCH transmission mode adopts semi-static configuration;
(2) indicating the mode of sending the SC-MCCH in the current repetition period to the UE through a DCI format, wherein the mode can dynamically adjust the sending mode of the SC-MCCH;
(3) the method for transmitting SC-MCCH is dynamically adjusted by MAC CE, and the method for transmitting SC-MCCH is dynamically adjusted by MAC CE whenever the transmission method of SC-MCCH changes
In order to enable the UE to receive the SC-MCCH, the PDCCH scrambled by SC-RNTI for CRC needs to be sent, the DCI format on the PDCCH is dynamic scheduling information of the SC-MCCH, and the SC-RNTI is used for identifying the SC-MCCH on a Uu interface. Specifically, before transmitting the SC-MCCH in each repetition period of Trmin radio frames, the gNB determines a timing difference T1 between the PDCCH and the SC-MCCH, T1< ═ T: compared with each time slot for transmitting the SC-MCCH, the PDCCH carrying the dynamic scheduling information of the SC-MCCH in the time slot needs to be transmitted T1 time slots in advance. Then, for each time slot for transmitting the SC-MCCH, the gNB determines the time slot for transmitting the PDCCH according to the timing difference T1, the PDCCH scrambled by the SC-RNTI for the CRC is transmitted in the corresponding search space on the corresponding CORESET in the corresponding time slot, and the DCI format on the PDCCH is the dynamic scheduling information of the SC-MCCH in the corresponding time slot. The core and the search space are the core and the search space where the PDCCH transmitting the SC-MCCH dynamic scheduling information is located.
S207, when the configuration information of the PTM bearer of the newly-added MBS needs to be sent through the SC-MCCH, determining the service type of the newly-added MBS, and determining each modification period and each repetition period which can be used for sending the configuration information of the PTM bearer of the newly-added MBS according to the service type of the newly-added MBS; and sending an SC-MCCH change notice in each repetition period in the latest modification period, and sending the configuration information of the PTM bearer of the newly added MBS through the SC-MCCH from the latest modification period or from the next modification period.
Specifically, when a newly-added MBS is sent by a PTM bearer in a cell and the configuration information of the PTM bearer of the newly-added MBS needs to be sent through an SC-MCCH, the service type of the newly-added MBS is determined, n1 is used for representing the service type of the MBS of the newly-added MBS, the starting point of each modification period which can be used for sending the configuration information of the PTM bearer of the newly-added MBS is determined according to the service type of the newly-added MBS, and the position of the SC-MCCH which sends the configuration information of the PTM bearer of the newly-added MBS is determined in each modification period. Specifically, the frame number SFN of the starting radio frame of each modification period that is available for transmitting the configuration information of the PTM bearer of the newly added MBS is determined according to formula 6, and the location of the SC-MCCH that is available for repeatedly transmitting the configuration information of the PTM bearer of the newly added MBS in each modification period is determined according to formula 7.
SFN MOD Tm (n1) ═ 0 (formula 6)
SFN MOD Tr (n1) ═ OFFSET (equation 7)
Sending SC-MCCH modification notice in each repetition period in the latest modification period, and sending the configuration information of the PTM bearer of the newly-added MBS through the SC-MCCH in each repetition period from the latest modification period or from the next modification period
In order to enable the UE to receive the corresponding SC-MCCH, aiming at the SC-MCCH transmitted in each time slot, a PDCCH scrambled by SC-RNTI for CRC is transmitted in advance, and the DCI format on the PDCCH is dynamic scheduling information of the SC-MCCH transmitted in the corresponding time slot. The method for sending the PDCCH is the same as the corresponding method in step six, and is not described again.
The method of transmitting the SC-MCCH change notification may be one of the following methods:
the method comprises the following steps: and sending the SC-MCCH change notification by adopting a DCI format on the PDCCH scrambled by the SC-N-RNTI for CRC, wherein the CORESET and the search space used for sending the SC-MCCH change notification are the COREST and the search space used for sending the PDCCH scrambled by the SC-RNTI for CRC. The SC-N-RNTI is used for identifying the SC-MCCH modification notification on the Uu interface.
The method 2 comprises the following steps: and carrying the SC-MCCH change notification by a DCI format on the PDCCH scrambled by SC-RNTI by CRC. Specifically, in each repetition period in the modification period for sending the SC-MCCH modification notification, the SC-MCCH modification notification is carried in a DCI format on a PDCCH carrying SC-MCCH dynamic scheduling information.
In the method 2, the SC-MCCH change notification does not need to be sent separately in each repetition period in the modification period for sending the SC-MCCH change notification, and the dynamic scheduling information of the SC-MCCH and the SC-MCCH change notification are carried to the UE through a DCI format on the PDCCH scrambled by the SC-RNTI through CRC.
The method 3 comprises the following steps: the SC-MCCH change notification is carried to the UE by the MAC CE. Specifically, the MAC CE is transmitted through the SC-MCCH every repetition period in the modification period in which the SC-MCCH change notification is transmitted.
In the method 3, the SC-MCCH change notification does not need to be sent separately in each repetition period within the modification period in which the SC-MCCH change notification is sent, and the MAC CE for indicating the SC-MCCH change notification is carried by the corresponding SC-MCCH.
When the method 1 is adopted, in a modification period for sending the SC-MCCH modification notification, each position for sending the SC-MCCH is determined according to a formula 7, the position for sending the SC-MCCH modification notification is determined by taking each position for sending the SC-MCCH as a reference, and the SC-MCCH modification notification is sent at each position for sending the SC-MCCH modification notification.
The method for determining the position of each sent SC-MCCH modification notice by taking the position of each sent SC-MCCH as a reference is one of the following methods:
the method comprises the following steps: the initial position of each SC-MCCH transmission is the initial position of each SC-MCCH modification notification transmission
The method 2 comprises the following steps: for each initial position for sending the SC-MCCH, determining the position of a PDCCH for sending the SC-MCCH dynamic scheduling information at the position, and taking the position of the PDCCH as the initial position for sending the SC-MCCH modification notice;
the method 3 comprises the following steps: and for each starting position for transmitting the SC-MCCH, determining the position of a PDCCH for transmitting the SC-MCCH dynamic scheduling information at the position, and starting to transmit the SC-MCCH modification notification in advance by taking the position of the PDCCH as a reference by P2-B-L2 time slots.
After the start position of each SC-MCCH change notification is determined according to one of the above methods, the SC-MCCH change notification is transmitted by occupying P2B L2 consecutive time slots from the start position of each SC-MCCH change notification, dividing P2 time slots into L2 groups, each group including B time slots, and transmitting the SC-MCCH change notification by using B beams in the B time slots included in each group, the B beams being B beams used by the SS/PBCH block, and repeatedly transmitting the SC-MCCH change notification in different beam directions L2 times through L2 group time slots.
In the information transmission method provided in the embodiment of the present application, the configuration information of the SC-MCCH is sent through the special SIB for the SC-MCCH, and the configuration information of the PTM bearer of the MBS of various MBS service types is sent through the SC-MCCH in respective modification periods and respective repetition periods, so that the problems of radio resource consumption and power consumption of the UE caused by the adoption of the uniformly configured modification periods and the uniformly configured repetition periods when the configuration information of the PTM bearer of the MBS is sent through the SC-MCCH can be solved.
On the basis of the above embodiment, a case where the control channel is a multicast broadcast service dedicated broadcast control channel will be described below with reference to fig. 4. Fig. 4 is a schematic flowchart of another information transmission method provided in an embodiment of the present application, as shown in fig. 4, including:
s301, determining the service quality requirement of each service type of the multicast broadcast service.
S302, according to the service quality requirement of the service type of each multicast broadcast service, determining the modification period and the repetition period of each multicast broadcast service.
The technical terms, technical effects, technical features and optional implementation manners of S301 to S302 can refer to S101 to S102 shown in fig. 2, and repeated contents are not described herein.
S303, determining the position for sending the MBS special SIB.
Selecting a minimum value from a repetition period configured for each MBS service type, and using Trmin to represent the minimum value, so that the MBS special SIB needs to be sent in each repetition period with the length of Trmin radio frames, and a frame number SFN of a starting radio frame and a subscript TSNO of a starting time slot for sending the MBS special SIB in each repetition period satisfy the following formula:
SFN MOD Trmin ═ FLOOR (x/T) (formula 8)
TSNO ═ x MOD T (formula 9)
x ═ u × w (equation 10)
In the above formula, u is a subscript of an SI window for transmitting MBS-specific SIBs, the subscript of a first SI window is 0, w is the number of slots included in one SI window, T is the number of slots included in one radio frame, and FLOOR (x/T) is an integer not greater than (x/T).
Based on formula 8, formula 9 and formula 10, in each repetition period of Trmin radio frames, P1 consecutive slots are occupied to transmit MBS-specific SIBs in the radio frames whose frame numbers satisfy formula 8, starting from the slot whose slot index satisfies formula 9.
Based on the above processing, in each repetition period of the radio frame with the length of Trmin, starting from the time slot with the index of TSNO in the radio frame with the frame number satisfying formula 8, each segment of the PTM configuration information is transmitted using B beams, and each segment is repeatedly transmitted L1 times.
S304, determining the information carried on the MBS special SIB at the position of sending the MBS special SIB.
For the nth MBS service type, when the repetition period of the service type is Trmin, in each repetition period determined in step S303 for transmitting the MBS dedicated SIB, the configuration information of the PTM bearer of the MBS of the service type is carried on the MBS dedicated SIB when the MBS dedicated SIB is transmitted, where N is 1,2, …, N.
For the nth MBS service type, when the repetition period of the service type is not Trmin, calculating the frame number of the starting radio frame for sending the configuration information carried by the PTM of the MBS of the nth MBS service type according to the following formula in each repetition period of tr (N) radio frames, where N is 1,2, …, N:
SFN MOD Tr (n) ═ FLOOR (x/T) (formula 11)
The location to transmit the MBS dedicated SIB determined according to formula 11 is a subset of the location to transmit the MBS dedicated SIB determined according to formula 8, i.e.: the location of the MBS dedicated SIB transmitting the configuration information of the PTM bearer of the MBS of the nth MBS service type is the subset of the location of transmitting the MBS dedicated SIB determined in step S303.
S305, the scheduling information of the MBS special SIB is broadcasted in the NR cell through the SIB 1. The scheduling information of the MBS dedicated SIB may be region-specific, and the scheduling information of the MBS dedicated SIB is the same in each cell in the corresponding region. The configuration information of the PTM bearer of an MBS carried on the MBS dedicated SIB may also be area specific, and the configuration information of the PTM bearer of the MBS in each cell in the corresponding area is the same.
The scheduling information of the MBS dedicated SIB includes the following parameters:
(1) scheduling information of MBS dedicated SIB:
BWP configuration information: sending the BWP configuration information of the MBS special SIB;
configuration information of CORESET and search space: the configuration information of the CORESET and the search space of the PDCCH for sending the dynamic scheduling information of the MBS special SIB, the DCI format on the PDCCH is the dynamic scheduling information of the MBS special SIB, the CORESET and the search space are positioned on the BWP for sending the MBS special SIB, and the CRC of the PDCCH is scrambled by using SI-RNTI;
the modification period and the repetition period corresponding to each MBS service type are as follows: t ism(n),Tr(N), N is 1,2, …, N is the number of MBS service types;
sending subscript u of an SI window of the special SIB for MBS and the length w of the SI window;
the repeated sending times L1 of the PTM configuration information in each repetition period (the parameter can also be carried to the UE through DCI format on PDCCH scrambled by the CRC with SI-RNTI);
a maximum number of segments S of PTM configuration information (this parameter does not have to be configured when the number of segments S1 of PTM configuration information is carried in DCI format on PDCCH scrambled with SI-RNTI by CRC);
timing difference T: in order to receive the MBS dedicated SIB in each repetition period determined in step S303, the UE needs to monitor the PDCCH scrambled by the SI-RNTI for the CRC T slots in advance with respect to the first slot in each repetition period for transmitting the MBS dedicated SIB, and the DCI format on the PDCCH is the dynamic scheduling information of the MBS dedicated SIB in the corresponding slot.
Specifically, the UE needs to receive the MBS dedicated SIB from the timeslot determined by formula 9 in the radio frame determined by formula 8, and based on the timeslot determined by formula 9, the UE needs to monitor the PDCCH scrambled by the SI-RNTI for the CRC T timeslots in advance, where the DCI format on the PDCCH is the dynamic scheduling information of the MBS dedicated SIB in the corresponding timeslot.
(2) Configuration information of MBS-specific SIB modification notification:
the MBS special SIB change notice is repeatedly sent for a time L2 in each repetition period;
and when the MBS special SIB has the configuration information of the newly added MBS PTM bearer, not sending the system message change notice, and sending the MBS special SIB change notice, wherein the MBS special SIB change notice and the SC-MCH change notice carry the same information.
S306, sending MBS special SIB at each position of sending MBS special SIB determined in step S303, carrying configuration information of PTM carrying of MBS of corresponding MBS service type on the MBS special SIB sent at each position, sending PDCCH scrambled by SI-RNTI of CRC, and DCI format on PDCCH is dynamic scheduling information of MBS special SIB.
Specifically, in each repetition period of the radio frames with the length of Trmin, the MBS-specific SIB is transmitted from the time slot in which the slot index in the radio frame whose frame number satisfies formula 8 satisfies formula 9. The number of segments of PTM configuration information when the MBS dedicated SIB is transmitted in the current repetition period is denoted by S1, S1 ═ S, and the MBS dedicated SIB is transmitted while occupying P1 ═ S1 × L1 ×) B slots in the current repetition period.
The mode of sending the MBS dedicated SIB may be a mode of sending an existing SIB, or a mode of sending the SC-MCCH in step S206.
S307, when the configuration information of the PTM bearer of the newly added MBS needs to be sent through the special SIB of the MBS, determining the service type of the newly added MBS, determining each modification period and each repetition period which can be used for sending the configuration information of the PTM bearer of the newly added MBS according to the service type of the newly added MBS, sending an SIB change notice special for the MBS in the latest modification period, and sending the configuration information of the PTM bearer of the newly added MBS through the special SIB of the MBS from the latest modification period or from the next modification period.
Specifically, when a new MBS is sent by a PTM bearer in a cell and the configuration information of the PTM bearer of the new MBS needs to be sent through an MBS special SIB, the service type of the new MBS is determined, n1 represents the MBS service type of the new MBS, the starting point of each modification period which can be used for sending the configuration information of the PTM bearer of the new MBS is determined according to the service type of the new MBS, and the position of the MBS special SIB which can be used for sending the configuration information of the PTM bearer of the new MBS is determined in each modification period. Specifically, the frame number SFN of the starting radio frame in each modification period that is available for transmitting the configuration information of the PTM bearer of the newly added MBS is determined according to formula 12, and the location of the MBS-specific SIB that is available for repeatedly transmitting the configuration information of the PTM bearer of the newly added MBS in each modification period is determined according to formula 13.
SFN MOD Tm (n1) ═ 0 (equation 12)
SFN MOD Tr (n1) ═ FLOOR (x/T) (equation 13)
Transmitting an MBS-specific SIB modification notification at each location determined by formula 13 in the latest modification period satisfying formula 12, and transmitting the MBS-specific SIB at each location satisfying formula 13 from the latest modification period or the next modification period, where the MBS-specific SIB carries the configuration information of the PTM bearer of the newly added MBS.
The method comprises the steps of starting from each position for sending the MBS special SIB change notification, occupying P2-B-L2 continuous time slots to send the MBS special SIB change notification, dividing P2 time slots into L2 groups, wherein each group comprises B time slots, respectively adopting B beams to send the MBS special SIB change notification in the B time slots in each group, the B beams are B beams adopted by an SS/PBCH block, and repeatedly sending the MBS special SIB change notification in different beam directions for L2 times through the L2 group time slots. The PDCCH scrambled with SC-N-RNTI by CRC in the corresponding time slot carries MBS-specific SIB modification notification.
In the information transmission method provided in the above embodiment, based on QOS requirements of each MBS service type, a modification period and a repetition period are individually configured for each MBS service type, a minimum value is taken from the repetition periods of all MBS service types as a transmission period of an MBS dedicated SIB, a subscript of an SI window for transmitting the MBS dedicated SIB is determined, a position for transmitting the MBS dedicated SIB is determined in each transmission period according to the subscript, configuration information of PTM bearers of MBS of which service types need to be transmitted in all MBS service types is determined at each position for transmitting the MBS dedicated SIB, and then, corresponding configuration information is transmitted at corresponding positions. When needing to broadcast configuration information of PTM bearer of a newly added MBS transmitted by the PTM bearer through special SIB of the MBS, determining a modification period and a repetition period which can be used for sending the configuration information of the PTM bearer of the newly added MBS according to the QOS requirement of the newly added MBS; and sending the MBS special SIB modification notice in a latest modification period, and sending the configuration information of the PTM bearer of the newly added MBS through the MBS special SIB from the latest modification period or the next modification period.
In summary, after configuring the modification period and the repetition period for each MBS service type separately, the SC-MCCH and the MBS dedicated SIB almost use the same procedure to transmit the configuration information of the PTM bearer of the MBS of each MBS service type. For the MBS special SIB, when the configuration information of the PTM bearer of the newly added MBS is borne on the SIB, the system message change notice is not required to be sent, the MBS special SIB change notice is sent, the MBS special SIB change notice and the SC-MCCH change notice have the same content, and the MBS special SIB change notice is carried to the UE through the PDCCH scrambled by the SC-N-RNTI. The information transmission method provided by the embodiment of the application sends the configuration information of the PTM of the MBS through the special SIB of the MBS, and sends the configuration information of the PTM bearing of the MBS with various MBS service types through the special SIB of the MBS according to respective modification periods and respective repetition periods, so that the problems of wireless resource consumption and UE power consumption caused by adopting the uniformly configured modification periods and the uniformly configured repetition periods can be solved.
Fig. 5 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application. The information transmission means may be implemented by software, hardware or a combination of both. As shown in fig. 5, the information transmission apparatus 400 includes:
a processing module 401, configured to determine a service quality requirement of a service type of each multicast broadcast service; determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service;
a sending module 402, configured to send, in a cell, configuration information of point-to-multipoint bearer of each multicast and broadcast service through a control channel based on a modification period and a repetition period of each multicast and broadcast service, and send dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel; when there is a new multicast broadcast service sent by point-to-multipoint bearer in the cell, a change notification is sent in the cell, and configuration information of the point-to-multipoint bearer of the new multicast broadcast service is sent in the cell through a control channel.
In an optional implementation manner, the control channel is a single-cell multicast control channel, and the processing module 401 is further configured to determine a location for sending the single-cell multicast control channel based on a modification period and a repetition period of each multicast broadcast service; determining configuration information carried on a single-cell multicast control channel at each of the positions where the single-cell multicast control channel is transmitted;
the sending module 402 is further configured to send a single-cell multicast control channel in a cell at each of the locations where the single-cell multicast control channel is sent, where the single-cell multicast control channel carries corresponding configuration information. The single-cell multicast control channel is transmitted through a dedicated downlink shared channel and a dedicated physical downlink shared channel of the multicast broadcast service.
In an optional implementation manner, the control channel is a multicast broadcast control channel dedicated to a multicast broadcast service, and the processing module 401 is further configured to determine a location for sending a system information block dedicated to the multicast broadcast service based on a modification period and a repetition period of each multicast broadcast service; determining configuration information carried on the multicast broadcast service special system information block at each position of the positions for sending the multicast broadcast service special system information block;
the sending module 402 is further configured to send a multicast and broadcast service dedicated system information block in a cell at each of the locations where the multicast and broadcast service dedicated system information block is sent, where the multicast and broadcast service dedicated system information block carries corresponding configuration information, the multicast and broadcast service dedicated system information block is transmitted through a multicast and broadcast service dedicated broadcast control channel, and the multicast and broadcast service dedicated broadcast control channel is transmitted through a dedicated downlink shared channel and a dedicated physical downlink shared channel.
The information transmission device provided in the embodiment of the present application is located in a base station, preferably, the base station is a gNB, and the base station may also be a 4G base station (evolved NodeB, eNB).
The principle and technical effect of the information transmission apparatus provided in this embodiment are similar to those of the information transmission method, and are not described herein again.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 6, the electronic device may include: at least one processor 501 and memory 502. Fig. 6 shows an electronic device as an example of a processor.
The memory 502 stores programs. In particular, the program may include program code including computer operating instructions.
Memory 502 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor 501 is used for executing computer-executable instructions stored in the memory 502 to implement the above information transmission method;
the processor 501 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement the embodiments of the present Application.
Alternatively, in a specific implementation, if the communication interface, the memory 502 and the processor 501 are implemented independently, the communication interface, the memory 502 and the processor 501 may be connected to each other through a bus and perform communication with each other. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. Buses may be classified as address buses, data buses, control buses, etc., but do not represent only one bus or type of bus.
Alternatively, in a specific implementation, if the communication interface, the memory 502 and the processor 501 are integrated into a chip, the communication interface, the memory 502 and the processor 501 may complete communication through an internal interface.
The embodiment of the application also provides a chip which comprises a processor and an interface. Wherein the interface is used for inputting and outputting data or instructions processed by the processor. The processor is configured to perform the methods provided in the above method embodiments. The chip can be applied to an information transmission device.
The present application also provides a computer-readable storage medium, which may include: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present application also provide a program, which is configured to execute the information transmission method provided in the above method embodiments when executed by a processor.
Embodiments of the present application further provide a program product, for example, a computer-readable storage medium, where instructions are stored in the program product, and when the program product runs on a computer, the program product causes the computer to execute the information transmission method provided by the foregoing method embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the invention are brought about in whole or in part when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (17)

1. An information transmission method, applied to a radio access network, the method comprising:
determining the service quality requirement of the service type of each multicast broadcast service;
determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service;
based on the modification period and the repetition period of each multicast broadcast service, in a cell, sending configuration information of point-to-multipoint bearer of each multicast broadcast service through a control channel, and sending dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel;
when there is a new multicast broadcast service sent by point-to-multipoint bearer in the cell, sending a change notification in the cell, and sending configuration information of the point-to-multipoint bearer of the new multicast broadcast service in the cell through the control channel.
2. The method of claim 1, wherein the control channel is a single-cell multicast control channel, and the transmitting the configuration information of the point-to-multipoint bearer for each multicast broadcast service through the control channel in the cell based on the modification period and the repetition period of each multicast broadcast service comprises:
determining the position for sending the single-cell multicast control channel based on the modification period and the repetition period of each multicast broadcast service;
determining configuration information carried on the single-cell multicast control channel at each of the positions for transmitting the single-cell multicast control channel;
and sending the single-cell multicast control channel in the cell at each of the positions for sending the single-cell multicast control channel, wherein the configuration information is borne on the single-cell multicast control channel, and the single-cell multicast control channel is transmitted through a dedicated downlink shared channel and a dedicated physical downlink shared channel.
3. The method according to claim 2, wherein said sending the dynamic scheduling information of the control channel dedicated physical downlink shared channel in a downlink control information format carried on a physical downlink control channel in the cell comprises:
and sending a physical downlink control channel scrambled by a single-cell wireless network temporary identifier for cyclic redundancy check in a cell, wherein the format of downlink control information carried on the physical downlink control channel is dynamic scheduling information of a physical downlink shared channel special for a single-cell multicast control channel.
4. The method of claim 2, wherein before transmitting the single-cell multicast control channel and the physical downlink control channel within a cell, further comprising:
broadcasting the configuration information of the single-cell multicast control channel in a cell through a system information block special for the single-cell multicast control channel, wherein the scheduling information of the system information block special for the single-cell multicast control channel is carried in a system information block 1;
the single cell multicast control channel dedicated system information blocks may be area specific, in which each cell has the same content for the single cell multicast control channel dedicated system information blocks.
5. The method of claim 1 or 2, wherein the sending the change notification in the cell when there is an additional multicast broadcast service in the cell that is sent on a point-to-multipoint bearer comprises:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
the change notification is sent in each repetition period of the most recent one of the modification periods.
6. The method of claim 5, wherein said sending the change notification in each repetition period of a most recent modification period comprises:
a single cell informs a wireless network temporary identifier of a physical downlink control channel scrambled by a cyclic redundancy check of a downlink control information format carried on the physical downlink control channel to send a change notice, a control resource set and a search space used by the physical downlink control channel are control resource sets and search spaces adopted by the physical downlink control channel scrambled by the single cell wireless network temporary identifier for sending the cyclic redundancy check, and the single cell informs the wireless network temporary identifier of the change notice of the single cell multicast control channel;
or, the change notice is carried in a downlink control information format carried on a physical downlink control channel scrambled by a single-cell wireless network temporary identifier by adopting cyclic redundancy check;
or, the change notification is carried by a media access control unit, and the media access control unit sends the change notification through a single-cell multicast control channel.
7. The method according to claim 1 or 2, wherein the sending the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through the control channel in the cell comprises:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
and transmitting the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through a single-cell multicast control channel from the latest modification period or from the next modification period.
8. The method of claim 1, wherein the control channel is a multicast broadcast service dedicated broadcast control channel, the multicast broadcast service dedicated broadcast control channel is used for carrying multicast broadcast service dedicated system information blocks, the multicast broadcast service dedicated system information blocks carry configuration information of a point-to-multipoint bearer of each multicast broadcast service, and the configuration information of the point-to-multipoint bearer of each multicast broadcast service is transmitted through the control channel in a cell based on a modification period and a repetition period of each multicast broadcast service, and the method comprises:
determining the position for sending the special system information block of the multicast broadcast service based on the modification period and the repetition period of each multicast broadcast service;
determining configuration information carried on the multicast broadcast service special system information block at each of the positions for transmitting the multicast broadcast service special system information block;
and transmitting the special system information block for the multicast broadcast service in the cell at each position of the positions for transmitting the special system information block for the multicast broadcast service, wherein the special system information block for the multicast broadcast service bears the configuration information, the special system information block for the multicast broadcast service is transmitted through a special broadcast control channel for the multicast broadcast service, and the special broadcast control channel for the multicast broadcast service is transmitted through a special downlink shared channel and a special physical downlink shared channel.
9. The method according to claim 1 or 8, wherein said sending the dynamic scheduling information of the control channel dedicated physical downlink shared channel in a downlink control information format carried on a physical downlink control channel in a cell comprises:
and sending a physical downlink control channel scrambled by a system information wireless network temporary identifier for cyclic redundancy check in a cell, wherein the format of downlink control information borne on the physical downlink control channel is dynamic scheduling information of a dedicated physical downlink shared channel of the multicast broadcast service dedicated broadcast control channel, and the multicast broadcast service dedicated broadcast control channel bears a multicast broadcast service dedicated system information block.
10. The method according to claim 1 or 8, wherein before said transmitting said multicast broadcast service dedicated system information block and physical downlink control channel in a cell, further comprising:
the system information block 1 is used for bearing the scheduling information of the system information block special for the multicast broadcast service, the scheduling information of the system information block special for the multicast broadcast service can be special for the region, and the scheduling information of the system information block special for the multicast broadcast service in each cell in the region is the same.
11. The method of claim 1 or 8, wherein the sending the change notification in the cell when there is an additional multicast broadcast service in the cell that is sent on a point-to-multipoint bearer comprises:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
a change notification is sent in each repetition period in the last modification period.
12. The method of claim 11, wherein sending a change notification in each repetition period of a most recent modification period comprises:
and informing the radio network of the downlink control information format carried on the physical downlink control channel scrambled by the temporary identifier by using a single cell through cyclic redundancy check to send a change notice.
13. The method according to claim 1 or 8, wherein the sending the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through the control channel in the cell comprises:
determining each modification period and each repetition period of the configuration information of the point-to-multipoint bearer which can be used for sending the newly added multicast broadcast service according to the service type of the newly added multicast broadcast service;
and transmitting the configuration information of the point-to-multipoint bearer of the newly added multicast broadcast service through a multicast broadcast service dedicated system information block from the latest modification period or from the next modification period.
14. The method of claim 1, wherein the configuration information of the point-to-multipoint bearer of each multicast broadcast service is area-specific, and the configuration information of the point-to-multipoint bearer of the multicast broadcast service is the same for each cell in the area.
15. An information transmission apparatus, characterized in that the apparatus comprises:
the processing module is used for determining the service quality requirement of the service type of each multicast broadcast service; determining a modification period and a repetition period of each multicast broadcast service according to the service quality requirement of the service type of each multicast broadcast service;
a sending module, configured to send, in a cell, configuration information of point-to-multipoint bearer of each multicast and broadcast service through a control channel based on the modification period and the repetition period of each multicast and broadcast service, and send dynamic scheduling information of a dedicated physical downlink shared channel of the control channel through a downlink control information format borne on a physical downlink control channel; when there is a new multicast broadcast service sent by point-to-multipoint bearer in the cell, sending a change notification in the cell, and sending configuration information of the point-to-multipoint bearer of the new multicast broadcast service in the cell through the control channel.
16. The apparatus of claim 15, wherein the control channel is a single-cell multicast control channel, and wherein the processing module is further configured to determine a location for sending the single-cell multicast control channel based on the modification period and the repetition period of each multicast broadcast service; determining configuration information carried on the single-cell multicast control channel at each of the positions for transmitting the single-cell multicast control channel;
the sending module is further configured to send the single-cell multicast control channel in a cell at each of the locations where the single-cell multicast control channel is sent, where the single-cell multicast control channel carries the configuration information.
17. The apparatus of claim 15, wherein the control channel is a multicast broadcast service dedicated broadcast control channel, and wherein the processing module is further configured to determine a location for sending the multicast broadcast service dedicated system information block based on the modification period and the repetition period of each multicast broadcast service; determining configuration information carried on the multicast broadcast service special system information block at each of the positions for transmitting the multicast broadcast service special system information block;
the sending module is further configured to send the multicast and broadcast service dedicated system information block in a cell at each of the locations where the multicast and broadcast service dedicated system information block is sent, where the multicast and broadcast service dedicated system information block carries the configuration information, the multicast and broadcast service dedicated system information block is transmitted through the multicast and broadcast service dedicated broadcast control channel, and the multicast and broadcast service dedicated broadcast control channel is transmitted through a dedicated downlink shared channel and a dedicated physical downlink shared channel.
CN202110008600.2A 2021-01-05 2021-01-05 Information transmission method and device Active CN114727230B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110008600.2A CN114727230B (en) 2021-01-05 2021-01-05 Information transmission method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110008600.2A CN114727230B (en) 2021-01-05 2021-01-05 Information transmission method and device

Publications (2)

Publication Number Publication Date
CN114727230A true CN114727230A (en) 2022-07-08
CN114727230B CN114727230B (en) 2023-08-29

Family

ID=82233403

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110008600.2A Active CN114727230B (en) 2021-01-05 2021-01-05 Information transmission method and device

Country Status (1)

Country Link
CN (1) CN114727230B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100177675A1 (en) * 2007-06-08 2010-07-15 Zte Corporation Method for realizing mbms tdm and the information transmission method thereof
CN101925000A (en) * 2009-06-11 2010-12-22 大唐移动通信设备有限公司 Method, system and device for controlling terminal to monitor channel
CN103581832A (en) * 2012-07-23 2014-02-12 中国移动通信集团公司 Cluster service issuing and receiving method, device and system
CN107333246A (en) * 2015-08-14 2017-11-07 华为技术有限公司 A kind of multicast service reading, sending method and relevant device
US20180020426A1 (en) * 2015-01-26 2018-01-18 Lg Electronics Inc. Method and apparatus for providing mbms service for low complexity user equipment in wireless communication system
CN109792799A (en) * 2017-03-20 2019-05-21 华为技术有限公司 A kind of service communication method and apparatus
CN110557831A (en) * 2018-06-04 2019-12-10 成都鼎桥通信技术有限公司 Transmission method and equipment for control plane information in simulcast SC-PTM system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100177675A1 (en) * 2007-06-08 2010-07-15 Zte Corporation Method for realizing mbms tdm and the information transmission method thereof
CN101925000A (en) * 2009-06-11 2010-12-22 大唐移动通信设备有限公司 Method, system and device for controlling terminal to monitor channel
CN103581832A (en) * 2012-07-23 2014-02-12 中国移动通信集团公司 Cluster service issuing and receiving method, device and system
US20180020426A1 (en) * 2015-01-26 2018-01-18 Lg Electronics Inc. Method and apparatus for providing mbms service for low complexity user equipment in wireless communication system
CN107333246A (en) * 2015-08-14 2017-11-07 华为技术有限公司 A kind of multicast service reading, sending method and relevant device
CN110099357A (en) * 2015-08-14 2019-08-06 华为技术有限公司 A kind of multicast service reads, sending method and relevant device
CN109792799A (en) * 2017-03-20 2019-05-21 华为技术有限公司 A kind of service communication method and apparatus
US20200015113A1 (en) * 2017-03-20 2020-01-09 Huawei Technologies Co., Ltd. Service communication method and device
CN110557831A (en) * 2018-06-04 2019-12-10 成都鼎桥通信技术有限公司 Transmission method and equipment for control plane information in simulcast SC-PTM system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KYOCERA: "R2-168029 \"Details of multicast configuration for FeMTC and eNB-IoT\"", no. 2, pages 2 *
徐赤;王楠;: "LTE广播多播业务及其在公共安全中的应用", 电信技术, no. 07 *

Also Published As

Publication number Publication date
CN114727230B (en) 2023-08-29

Similar Documents

Publication Publication Date Title
EP3573353B1 (en) Communication method and device
KR101199389B1 (en) Method for paging in Wireless Access System
KR101865013B1 (en) Wireless communication method, wireless communication system, wireless terminal, and wireless base station
CN103857037B (en) mobile wireless device and operating method
EP3337199A1 (en) Resource configuration method, system, and device for single-cell multicast control channel (sc-mcch)
US11240735B2 (en) Communication system
US11265845B2 (en) Backup paging opportunities in new radio unlicensed
CN110635875B (en) Information transmission method and device
CN103856903A (en) Cluster access network, terminal equipment and method for joining cluster group
US10313863B2 (en) Downlink emergency service transmission method, base station, user equipment, and system
US11019595B2 (en) Paging method and device
CN110506433B (en) Method, device and storage medium for detecting unauthorized channels
EP4346142A1 (en) Wireless communication method, terminal, and network device
CN114727230B (en) Information transmission method and device
EP4156813A1 (en) Bwp configuration method and apparatus, terminal device, and network device
WO2021237693A1 (en) Enhanced discontinuous reception-based paging method and apparatus, device, and storage medium
CN108990150A (en) Paging processing method
CN115474161A (en) Cluster paging method, device, cluster terminal, network equipment and storage medium
WO2019192451A1 (en) Communication method and communication apparatus
CN116325818A (en) Communication method and device
EP3413668B1 (en) Wireless communication device, communication method, computer program, and wireless communication system
CN108574985B (en) Method and device in user equipment and base station used for wireless paging communication
EP4351229A1 (en) Method and apparatus for determining energy-saving signal monitoring occasion, and terminal device
EP4346290A1 (en) Time window determination method and apparatus and terminal device
CN114867084A (en) Information sending method and device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant