CN114374937A - Service change notification method, terminal and network side equipment - Google Patents

Service change notification method, terminal and network side equipment Download PDF

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Publication number
CN114374937A
CN114374937A CN202011120246.4A CN202011120246A CN114374937A CN 114374937 A CN114374937 A CN 114374937A CN 202011120246 A CN202011120246 A CN 202011120246A CN 114374937 A CN114374937 A CN 114374937A
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China
Prior art keywords
mbs
change notification
target
service change
notification message
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CN202011120246.4A
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王媛媛
张艳霞
谢振华
莫毅韬
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN202011120246.4A priority Critical patent/CN114374937A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • 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 discloses a service change notification method, a terminal and network side equipment, and belongs to the technical field of wireless communication. The service change notification method comprises the following steps: when notifying the service change of the target multicast broadcast service MBS, the network side equipment simultaneously sends a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.

Description

Service change notification method, terminal and network side equipment
Technical Field
The application belongs to the technical field of wireless communication, and particularly relates to a service change notification method, a terminal and network side equipment.
Background
In the related art, in the transmission process of a Multicast Broadcast Service (MBS), when notifying a Service change, for example, notifying a session start, a session suspension, a session recovery, or a session end of the MBS, a core network device notifies a base station, and the base station pages each terminal having a Temporary Mobile Group Identity (TMGI) corresponding to the MBS to notify each terminal of the Service change.
In the related art, the paging is implemented by calculating paging time based on the identifier of the terminal and the paging cycle, and the terminal monitors the paging channel at the different paging time for each terminal, and receives a service change notification sent by the network side device.
In the related art, for terminals of the same TMGI, network side equipment needs to page each terminal separately, for the same MBS service, the network side equipment needs to initiate multiple paging, which results in higher power consumption of the network side equipment and more occupied network resources.
Disclosure of Invention
The embodiment of the application provides a service change notification method, a terminal and a network side device, which can solve the problems of higher power consumption and more network resource occupation of the network side device in the related art.
In a first aspect, a method for notifying a service change is provided, including: when notifying the service change of the target multicast broadcast service MBS, the network side equipment simultaneously sends a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
In a second aspect, a service change notification apparatus is provided, including: the first determining module is used for determining the service change of the target multicast broadcast service MBS needing to be notified; and the notification module is used for simultaneously sending a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
In a third aspect, a method for notifying service change is provided, including: the terminal receives the service change notification message sent by the network side equipment to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
In a fourth aspect, a service change notification apparatus is provided, including: a second determining module, configured to determine an MBS group to which a target MBS of the terminal belongs; and the receiving module is used for receiving the service change notification message sent by the network side equipment to a group of terminals corresponding to the MBS grouping at the same time.
In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the third aspect.
In a sixth aspect, a network-side device is provided, which comprises a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the first aspect.
In a seventh aspect, there is provided a readable storage medium on which a program or instructions are stored, which program or instructions, when executed by a processor, implement the steps of the method according to the first aspect, or implement the steps of the method according to the third aspect.
In an eighth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a terminal program or an instruction, implement the method according to the third aspect, and execute a network-side device program or an instruction, or implement the method according to the first aspect.
In a ninth aspect, there is provided a computer program product comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the first aspect or implementing the steps of the method according to the third aspect.
In the embodiment of the application, when notifying the service change of the target MBS, the network side device sends a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs. Because the MBS grouping is used for informing instead of the identification of a single terminal, the network resource can be saved, and the power consumption of the network side equipment can be reduced.
Drawings
FIG. 1 illustrates a block diagram of a wireless communication system to which embodiments of the present application are applicable;
fig. 2 is a flowchart illustrating a service change notification method according to an embodiment of the present application;
fig. 3 is a schematic flow chart illustrating a service change notification method according to an embodiment of the present application;
fig. 4 is a schematic flow chart illustrating a service change notification method according to an embodiment of the present application;
fig. 5 is a schematic flowchart illustrating a service change notification method according to an embodiment of the present application;
fig. 6 is a schematic flowchart illustrating a service change notification method according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a service change notification apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram illustrating a service change notification apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a communication device provided in an embodiment of the present application;
fig. 10 is a schematic diagram illustrating a hardware structure of a terminal according to an embodiment of the present application;
fig. 11 shows a hardware structure diagram of a network-side device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in 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 that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as generation 6 (6)thGeneration, 6G) communication system.
Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but a specific type of the Base Station is not limited.
The service change notification method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Fig. 2 shows a flowchart of a service change notification method in an embodiment of the present application, where the method 200 may be executed by a network side device. In other words, the method may be performed by software or hardware installed on the network-side device. As shown in fig. 2, the method may include the following steps.
S210, when notifying the service change of the target MBS, the network side equipment simultaneously sends a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
Since the service types of a group of UEs having the same multicast broadcast service are the same, when notifying a service change, a single UE notification is not required, and therefore, in the embodiment of the present application, a group of UEs having the same service are simultaneously notified in a packet manner.
In one possible implementation, the terminals may be grouped according to the MBS service, for example, the terminals may be grouped according to at least one of the following: a session Identifier (ID) of the MBS, a session index (index) of the MBS, a Service (Service) ID of the MBS, a session group (group) ID of the MBS, a Quality of Service (QoS) flow ID, a TMGI packet ID, a Global System for Mobile Communications (GMS) Radio Network Temporary Identifier (RNTI) of the MBS) (i.e., an MBS Service RNTI), and an IP address (addr.) of the MBS.
Wherein, the session group (group) ID of the MBS is used to identify a group of MBS sessions, for example, the network side device may combine different session IDs into a group, so as to perform unified notification and management on the group of MBS sessions. In a specific application, the MBS sessions may be grouped based on Qos, or may be grouped based on the time when the MBS session starts, for example, multiple MBS sessions with close start time (e.g., time difference within a given threshold) are taken as an MBS session group.
In addition, the network side device may group UEs of the same TMGI and divide the UEs of the same TMGI into one or more TMGI groups. For example, grouping may be performed according to different measurement report results, UE access levels, or MBS services of interest reported by the UE.
Therefore, in one possible implementation, the parameters of at least one of the following UEs in the group of terminals are the same or have an association relationship, that is, the network side device may divide the UEs having the same or having an association relationship with the parameters of at least one of the following UEs or their combination into a group of terminals:
(1) session identification of MBS (MBS session ID); for example, terminals having the same MBS session ID are a group;
(2) a session index of MBS (MBS session index); for example, terminals having the same MBS session index are a group;
(3) service identification of MBS (MBS service ID);
(4) a session group identification (MBS session group ID) of the MBS;
(5) QoS flow identification (QoS flow ID);
(6)TMGI；
(7) a TMGI group identifier;
(8) GMS radio network temporary identity G-RNTI;
(8) internet protocol IP address of MBS (MBS IP addr).
In a possible implementation manner of the embodiment of the present application, the service change notification message may include at least one of the following or a combination thereof:
(1) identification information of the target MBS; for example, at least one of the following for the target MBS: (1) session identification (MBS session ID), session index (MBS session index), service identification (MBS service ID), session group identification (MBS session group ID), QoS flow identification (QoS flow ID), TMGI packet identification, G-RNTI, MBS IP addr, etc.
(2) The service type notified by the service change notification message; for example, the session of the target MBS is started, the session of the target MBS is suspended, the session of the target MBS is resumed, or the session of the target MBS is stopped.
(3) MBS notification change indication is used for indicating whether the content of the service change notification message is the same as the content of the service change notification message sent last time. That is, the indication is used to indicate whether the content of the service change notification message is the same as the content of the service change notification message sent to the terminal last time, and if so, the terminal does not need to parse the subsequent message content again, so as to save the processing flow of the terminal.
In this embodiment of the present application, the sending, by the network side device, the service change notification message to the group of terminals includes, but is not limited to, the following two implementation manners:
and (I) the network side equipment sends a service change notification message to the group of terminals through a downlink common control channel.
And (II) the network side equipment sends a service change notification message to the group of terminals through a paging channel.
These two implementations are described separately below.
Informing through downlink common control channel
In a possible implementation manner, a network side device may send first Downlink Control Information (DCI) through the Downlink common Control channel (e.g., PDCCH), where the first DCI carries a service change notification message, and the first DCI is scrambled by a first RNTI, and the first RNTI corresponds to the target MBS.
In the possible implementation manners, a DCI format scrambled by a special value RNTI (i.e., a first RNTI) may be defined, the content is a certain number of bits, and the MBS service change indication is notified. Such as M-RNTI scrambled DCI format 1-0.
In this possible implementation manner, optionally, a 1-bit or multi-bit indication may be used to indicate the MBS notification change indication (MBS modification indicator) in the service change notification message.
In another possible implementation, the notification may also be performed by means of a short message. Therefore, in this possible implementation manner, the sending, by the network side device, the service change notification message to the group of terminals through the downlink common control channel may include: and sending a short message through the downlink common control channel, wherein the short message carries a service change notification message and is scrambled through a second RNTI.
In this possible implementation, the second RNTI may be a Paging RNTI (P-RNTI), i.e., the short message is scrambled by the P-RNTI of the terminal.
In the possible implementation manner, optionally, 1bit may be added to the short message to indicate the MBS notification change indication (MBS modification indicator) in the service change notification message.
In the foregoing possible implementation manner, optionally, the network side device may further send a second DCI, where the second DCI is used to notify that the short message arrives, and the second DCI uses the second RNTI for scrambling. Thereby avoiding the terminal missing the short message.
In the foregoing possible implementation manner, the information carried in the short message may further include at least one of the following:
(1) system information change instruction information;
(2) indication information of Earthquake and Tsunami Warning System (ETWS);
(3) indication information of Commercial Mobile Alert Service (CMAS);
(4) indication information indicating stopping of paging listening.
In this possible implementation manner, optionally, to facilitate terminal inspection, the network side device may reserve a search space and a resource set for configuring the terminal for receiving the downlink common control channel for the MBS service. When sending a service change notification message to the group of terminals through a downlink common control channel, the network side device sends the downlink common control channel on a specific resource set and/or search space corresponding to the group of terminals, wherein the specific resource set and/or search space is a resource set and/or search space configured for the terminal by the network side device and dedicated for MBS paging.
For example, the network side device may define the search space for PDCCH reception for MBS notification as: type4-PDCCH common search space set (Type4-PDCCH common search space set).
Among them, a Control resource set (CORESET) can solve the existing range problem of the PDCCH, such as time domain length and frequency domain range. NR employs configurable CORESET, whose time-domain length and frequency-domain range can be configured by system information or dedicated RRC messages. The configuration of CORESET does not indicate a specific time domain position (but only a time domain duration (number of symbols)) indicated by the Monitoring Opportunity (MO) given by Search Space. For a certain CORESET, the NR may configure different Search spaces for different UEs, that is, configure different blind detection modes (such as a monitoring period, a monitored symbol start position, and the like) for different UEs. Therefore, the blind detection complexity of the UE can be further reduced.
Therefore, in a possible implementation manner of the embodiment of the present application, a resource set MBS control resource set and/or a search space MBS tagging search space (type4) for MBS service reception may be defined, and a paging for MBS performs PDCCH reception in a specific resource set or search space. So as to reduce the blind detection complexity of the terminal. And the network side equipment sends a service change notification message to a group of terminals through a downlink common control channel, and sends the service change notification message on the specific resource set and/or the search space of the group of terminals.
(II) Notification through paging channel
In a possible implementation manner, the network side device sends a service change notification message to the group of terminals at a first paging location, where the first paging location is used for paging multiple services of the terminals, the service change notification message is scrambled by a first RNTI, and the first RNTI corresponds to the target MBS. For example, the first RNTI may be a newly defined RNTI, e.g., an M-RNTI.
In the above possible implementation manner, the first paging location is a paging location of a general paging of the terminal, and the service change notification message is scrambled by the first RNTI, so that only a specific terminal (e.g., the group of terminals) can descramble the service change notification message.
In another possible implementation manner, the network side device sends a service change notification message to the group of terminals at a second paging location, where the second paging location is dedicated for paging of the target MBS of the terminal.
In the foregoing possible implementation manner, optionally, the second paging location may be determined according to a specific resource set and/or a search space configured by the network-side device for a group of the terminals, where the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging. As described above, the network side device may allocate a resource set and/or a search space dedicated for MBS paging to the terminal, so that a paging message of MBS, e.g., the service change notification message, may be sent on the dedicated resource set and/or search space.
In the above possible implementation manner, the network side device may also configure, for the terminal, a paging cycle T dedicated to MBS, a firstdcch-monitoring occasionofpo for MBS paging monitoring, and the like.
Alternatively, the second paging location may also be determined according to target parameters, where the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification of the target MBS.
For example, a position po (Paging occupancy) and a Paging Frame (PF) where Paging may occur may be determined. Wherein, PF is the system frame where PO locates, and a PF includes one or more POs. If the paging cycle of the target MBS is T, the number of the paging frames PF existing in one paging cycle is N, the identification information of the target MBS is MBS _ SERVICE _ ID, PF _ offset is an offset of a PF position, Ns is a PO number in one PF, the paging frame PF and the paging opportunity PO corresponding to the second paging position satisfy the following formula:
(SFN+PF_offset)mod T＝(T div N)*(MBS_SERVICE_ID mod N)；
i_s＝floor(MBS_SERVICE_ID/N)mod Ns
wherein:
t div N means that N PFs are uniformly distributed in T subframes with a period of T.
Taking the modulus of N for MBS _ SERVICE _ ID. It is possible to make the UEs of different MBS _ SERVICE _ IDs uniformly arranged in N PFs.
(SFN + PF _ offset) mod T is modulo T with respect to SFN. The net effect is to distribute the frames of different SFN numbers evenly into T subgroups
With this possible implementation, UEs of different MBS _ SERVICE _ IDs are uniformly distributed in N PFs, and the N PFs are also uniformly distributed within T.
Here, i _ s may also be understood as a position number of a PO of a terminal on the PF (i _ s th PO in the PF is indicated). It is understood that there may be different indexes on a frame, each index corresponding to a beam, and the ith _ s indicates the paging on the beam in the direction corresponding to the index. From the practical effect, i.e., i _ s is equal to SSB index. That is, in order to achieve the directionality of Paging message monitoring, the SSB transmission mechanism may be referred to, and the Beam direction of the Paging PDCCH monitored by the UE coincides with the direction of the Best Beam (Best Beam) selected by the UE.
The search space (search space) in NR is not a fixed time domain position in each frame, i.e. the period is not frame unit but slot unit, therefore, it is necessary to determine PDCCH monitoring occasions (monitoring occasions) through the search space, and each PO needs to include S PDCCH monitoring occasions because each PO corresponds to all SSBs, each PDCCH monitoring occasion corresponds to one SSB, and S is the number of SSBs actually transmitted in one SSB set period.
Therefore, after determining the PDCCH monitoring occussions, PFs and POs, the PDCCH monitoring occussions and each PO may be associated to determine the PDCCH monitoring occussions for paging of a certain UE.
In the foregoing possible implementation manner, the identification information of the target MBS may include at least one of the following:
(1) session identification (MBS session ID) of target MBS; for example, terminals having the same MBS session ID are a group;
(2) session index (MBS session index) of target MBS; for example, terminals having the same MBS session index are a group;
(3) service identification (MBS service ID) of target MBS;
(4) a session group identification (MBS session group ID) of the target MBS;
(5) QoS flow identification (QoS flow ID);
(6)TMGI；
(7) a TMGI group identifier;
(8)G-RNTI；
(8) IP addr of target MBS.
In the foregoing possible implementation manner, optionally, the paging cycle of the target MBS satisfies one of the following conditions:
paging cycles of different MBS are different;
the paging cycles of service sessions of different MBS are different;
the paging cycles of different MBS services are different;
the paging cycles of the session groups of different MBS are different;
the paging cycle of the TMGI packets of different MBS is different.
That is, the paging cycle of the MBS may be the same as the normal paging cycle, or may be different according to the MBS service, for example, a different MBS paging cycle is allocated to each session, each service, or each session group or TMGI group.
For example, MbsPageCycle: (ENUMERATED { rf32, rf64, rf128, rf256, rf512, rf1024 }.
Optionally, when configuring the MBS session start, the network side device may maximally approach the session start time to the second paging location, so as to achieve the purpose of saving power. Or, in the case of configuring a Discontinuous Reception (DRX) cycle of the MBS, the network side device may also configure the second paging cycle in an active period (active) of the DRX cycle of the target MBS.
In each possible implementation manner, the first RNTI may be determined according to the identification information of the target MBS. As described above, the identification information of the target MBS may include parameters of at least one of:
(1) session identification (MBS session ID) of target MBS;
(2) session index (MBS session index) of target MBS;
(3) service identification (MBS service ID) of target MBS;
(4) a session group identification (MBS session group ID) of the target MBS;
(5) QoS flow identification (QoS flow ID);
(6)TMGI；
(7) a TMGI group identifier;
(8)G-RNTI；
(8) IP addr of target MBS.
In one possible implementation manner, the determining manner of the first RNTI may include at least one of the following:
(1) truncating part of bits from the identification information of the target MBS to be used as the first RNTI; for example, truncated truncate RNTI may be the parameter described above.
(2) Selecting the Most Significant Bit (MSB) or the Least Significant Bit (LSB) from all parameters contained in the identification information of the target MBS to carry out cascade connection, thereby obtaining the first RNTI.
For example, if a session group of the MBS includes a plurality of session identifiers, a Most Significant Bit (MSB) or a Least Significant Bit (LSB) may be taken from different session ids for concatenation, thereby obtaining the first RNTI.
(2) Taking each parameter contained in the identification information of the target MBS as a parameter, and taking a result obtained by adopting a predetermined algorithm as the first RNTI; such as a hash operation, or other algorithm iteration.
(3) Merging each parameter contained in the identification information of the target MBS with a Mobile Country Code (MCC) or a Mobile Network number (MNC) to obtain the first RNTI;
(4) and according to a one-to-one mapping relation between preset MBS identification information and RNTI, taking the RNTI which has a mapping relation with the target MBS identification information as the first RNTI.
In a possible implementation manner, if the service type notified by the service change notification message is session suspension or session stop, sending the service change notification message to the group of terminals may further include the following implementation manners: and sending a specific Media Access Control (MAC) Control Element (CE) to the group of terminals, wherein the specific MAC CE indicates that the session of the target MBS is suspended or indicates that the session of the target MBS is stopped.
That is, in this possible implementation manner, the network side device may define a MAC CE for indicating the stop or suspension of a certain MBS service. For example, the MAC CE may include the following indication fields:
LCID: a logical Channel identity indicating a Multicast Transport Channel (MTCH);
stop MTCH: indicating the MBS service stop of the LCID;
suspend MTCH: and indicating the suspension of the MBS service of the LCID.
Alternatively, a LCID with a special value may be defined to indicate that all MBS services are terminated.
In this embodiment of the application, optionally, specific contents in the service change notification message may be as follows:
{
Session list{
session index session id，
actiontype enum(start，stop，resume，suspend)，
MTCH configuration information. // optional
}，
TMGI，
MCCH configuration information. // optional
By the method provided by the embodiment of the application, when notifying the service change of the target MBS, the network side equipment simultaneously sends the service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs. Because the MBS grouping is used for informing instead of the identification of a single terminal, the network resource can be saved, and the power consumption of the network side equipment can be reduced.
Fig. 3 shows another flow chart of the service change notification method in the embodiment of the present application, and the method 300 may be executed by a terminal. In other words, the method may be performed by software or hardware installed in the terminal. As shown in fig. 3, the method may include the following steps.
S310, the terminal receives the service change notification message sent by the network side equipment to the terminal of the MBS group according to the MBS group to which the target MBS belongs.
In the embodiment of the present application, the terminal may determine the time-frequency location for receiving the service change notification message according to the MBS group to which the target MBS belongs, for example, the identification information of the target MBS.
The method 300 in the embodiment of the present application corresponds to the method 200 described above, and has a possible implementation corresponding to the method 200, in this embodiment, a main implementation related to the method 300 is mainly described, and other details may refer to related descriptions in the method 200, which are not described herein again.
In one possible implementation manner, the service change notification message includes at least one of the following:
(1) identification information of the target MBS;
(2) the service type notified by the service change notification message;
(3) MBS notification change indication is used for indicating whether the content of the service change notification message is the same as the content of the service change notification message sent last time.
As described in the method 200, the identification information of the target MBS may include at least one of the following parameters:
(1) session identification (MBS session ID) of target MBS;
(2) session index (MBS session index) of target MBS;
(3) service identification (MBS service ID) of target MBS;
(4) a session group identification (MBS session group ID) of the target MBS;
(5) QoS flow identification (QoS flow ID);
(6)TMGI；
(7) a TMGI group identifier;
(8)G-RNTI；
(8) IP addr of target MBS.
In a possible implementation manner, if a service change notification message carries the MBS notification change indication, the method further includes: and determining whether the information contained in the service change notification message is the same as the service change notification message received last time or not according to the MBS notification change indication in the service change notification message, and if not, continuously analyzing the service change notification message.
For example, the terminal needs to monitor continuously for a period of time before the session of the target MBS starts, so that the terminal can know whether the currently received service change notification message changes relative to the last received service change notification message by including the MBS notification change indication in the service change notification message, and thus determine whether to continue analyzing the currently received service change notification message, so as to reduce the time consumed by the terminal to repeatedly analyze the service change notification message, and save the resources of the terminal.
For example, an identifier indicator bit valueTag may be added to the service change notification message to indicate whether the content of the message for MBS service notification changes, and when the content does not change, the UE does not continue to parse the notification message. The valueTag can adopt an inverted form (0,1, 0,1 … …) or a count +1 form. The present embodiment is not particularly limited.
Corresponding to the method 200, the service change notification message sent by the terminal receiving network side device to a group of terminals corresponding to the MBS packet at the same time includes but is not limited to the following two possible implementation manners:
receiving the service change notification message sent through a downlink common control channel;
(II) receiving the service change notification message sent by the paging channel.
As for the implementation manner (one), optionally, the terminal may monitor the downlink common control channel by using the first RNTI and the second RNTI respectively, and obtain the first DCI through the first RNTI, where the first DCI carries the service change notification message, and the first RNTI corresponds to the target MBS. That is, in this possible implementation manner, the service change notification message is scrambled by the first RNTI, and a terminal that knows the first RNTI can receive the first DCI, so that the service change notification message is simultaneously sent to a group of terminals.
The first RNTI is the same as in the method 200, and specific reference may be made to the description in the method 200.
Or, in another possible implementation manner, a short message sent through the downlink common control channel is received, and the short message is descrambled using a second RNTI, where the short message carries a service change notification message. That is, in this possible implementation, the service change notification message is sent via a short message, specifically referring to the related description in the method 200.
Optionally, the method may further include: and receiving second DCI, wherein the second DCI is used for notifying the arrival of the short message, and the second DCI uses the second RNTI for scrambling. Namely, the network side equipment informs the UE of the arrival of the short message through the second DCI.
Optionally, the information carried in the short message may further include at least one of the following:
(1) system information change instruction information;
(2) indication information of ETWS;
(3) indication information of the CMAS;
(4) indication information indicating stopping of paging listening.
In the first implementation manner, the terminal may detect the service change notification message sent by the network side device in a resource set and/or a search space configured by the network side device for the terminal and dedicated to MBS paging. That is, the network side device may configure a resource set and/or a search space dedicated for MBS paging for the terminal in advance, and send the downlink common control channel on the corresponding resource set and/or search space. See in particular the associated description in method 200.
For the second implementation manner, optionally, the first RNTI and the second RNTI are respectively used to monitor at a first paging location, and the service change notification message is obtained through the first RNTI, wherein the first paging location is used for paging of multiple services of the terminal, the first RNTI corresponds to the target MBS, and the second RNTI corresponds to a service other than the target MBS among the multiple services. That is, in a possible implementation manner, the network side device sends a service notification message through a common paging location, and the terminal monitors the special RNTI (i.e., the first RNTI), but since there may be a common paging message in the common paging location, the UE needs to monitor two RNTIs at the same time to perform dual-RNTI verification. For example, on PDCCH: and monitoring the P-RNTI to acquire the common paging information. Monitoring M-RNTI to acquire notification information of MBS.
Or, optionally, the terminal may also receive the service change notification message at a second paging location, where the second paging location is dedicated for paging of the target MBS of the terminal.
In the foregoing possible implementation manner, optionally, before the second paging location receives the service change notification message, the method further includes one of:
(1) determining the second paging position according to a specific resource set and/or a search space configured by the network side equipment for the terminal, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging; namely, the terminal blindly detects the service change notification message in the resource set and/or the search space dedicated to MBS paging. The specific implementation can be seen in the description of method 200.
(2) Determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification of the target MBS. Namely, the terminal determines the second paging position according to the target parameter. The specific determination may be as described in method 200.
As described in the method 200, in the embodiment of the present application, the service type notified by the service change notification message includes one of the following:
(1) starting a session of the target MBS;
(2) the session of the target MBS is suspended;
(3) session recovery of the target MBS;
(4) the session of the target MBS stops.
Optionally, if the service type notified by the service change notification message is the session suspension of the target MBS or the session stop of the target MBS, the terminal may further receive the service change notification message by using the following implementation manner (three) in addition to the possible implementation manners (one) and (two):
and receiving a specific MAC CE sent by network side equipment, wherein the specific MAC CE indicates the session suspension of the target MBS or indicates the session stop of the target MBS. The specific implementation manner of the specific MAC CE may refer to the related description in the method 200, and is not described herein again.
In one possible implementation manner, after receiving a service change notification message sent by a network side device to a terminal of the MBS packet, the method further includes: the terminal obtains the service resources of the target MBS through at least one of the following methods or the combination thereof:
(1) obtaining through a system message;
(2) obtaining through a paging message;
(3) obtaining through RRC signaling;
(4) acquiring a Multimedia Broadcast Multicast Service (MBMS) Control Channel (MCCH) through a Multicast common Control Channel;
(5) an MBMS Transport Channel (MTCH) is acquired through a multicast transport Channel.
Wherein, the service resource of the target MBS may include at least one of:
(1) MCCH configuration information
(2) Configuration information of MBS transmission channel MTCH
(3) Qos configuration (profile);
(4) MBS service IP address;
(5) a logical channel mapping relationship;
(6) routing Bridge (RB) configuration.
In addition, the service resource information of the target MBS may further include:
(7)TMGI；
(8) and (4) service type: session start, Session resume, Session suspend, Session stop;
(9) session ID, Session idx, Session group, TMGI group, service ID, etc., so that the terminal can recognize the target MBS.
In one possible implementation manner, after receiving a service change notification message sent by a network side device to a terminal of the MBS packet, the method further includes:
if the service type notified by the service change notification message is the session start of the target MBS, the terminal acquires the service resources of the target MBS, maps the logic information of the target MBS, establishes a Multicast Routing Bridge (MRB), enters an active state of the target MBS, and starts service reception of the MBS;
if the service type notified by the service change notification message is the session stop of the target MBS, the terminal ends the service reception of the target MBS, deactivates the target MBS and releases the service resources of the target MBS;
if the service type notified by the service change notification message is the session suspension of the target MBS, the terminal executes one of the following: reserving MTCH of the target MBS, suspending the target MBS service and keeping the activation state of the target MBS; reserving MCCH of the target MBS, not reserving MTCH of the target MBS service, and entering a deactivation state of the target MBS; deactivating the target MBS and releasing the service resource of the target MBS;
if the service type notified by the service change notification message is the session recovery of the target MBS, the terminal executes one of the following: and activating the target MBS, if the service resource of the target MBS is released, acquiring the service resource of the target MBS, and recovering the service reception of the target MBS.
The following describes a service change notification method provided in the embodiment of the present application, taking a specific service type as an example.
Example one
Fig. 4 is a schematic flowchart of another method for notifying a service change according to an embodiment of the present application, where the method 400 may be executed by a network side device and a terminal. In other words, the method may be performed by software or hardware installed in the network-side device and the terminal. As shown in fig. 4, the method may include the following steps.
S401, the UE applies for MBS service registration to obtain registration identification information (i.e. identification information of MBS), which is TMGI in this embodiment.
S402, the network side device notifies the UE of session start (session start) in a paging manner.
Wherein Paging employs a special search space and/or a special PO location calculation method, as described in method 200, the PO location satisfies:
(SFN+PF_offset)mod T＝(T div N)*(TMGI mod N)
i_s＝floor(TMGI/N)mod Ns
s403, the UE receives a paging message at the special PO position, and the message content is MBS session start.
S404, the UE starts to acquire resource (the acquisition mode is in 3) after receiving the session start, maps the logic channel, establishes MRB, enters the MBS ACTIVE state and starts to receive the MBS service.
Example two
Fig. 5 is a schematic flowchart of another method for notifying a service change according to an embodiment of the present application, where the method 500 may be executed by a network side device and a terminal. In other words, the method may be performed by software or hardware installed in the network-side device and the terminal. As shown in fig. 5, the method may include the following steps.
S501, UE applies for MBS service registration to obtain IP addr.
S502, the network side equipment informs the UE of the session suspend. Using the special position PO calculation method, as described in method 200, the PO satisfies:
(SFN+PF_offset)mod T＝(T div N)*(IP addr mod N)
i_s＝floor(IP addr/N)mod Ns
s503, the UE receives the paging message at the special location PO. The message content is MBS session suspend.
S504, the UE releases the MCCH and MTCH resources.
S505, the UE receives a paging message at a special location PO. The message content is MBS session resume.
S506, the UE starts to monitor the MCCH, obtains the MTCH configuration information, reacquires the MBS resources, establishes the MRB and maps the logical channel.
S507, the UE resumes receiving the MBS service.
EXAMPLE III
Fig. 6 is a schematic flowchart of another method for notifying a service change according to an embodiment of the present application, where the method 600 may be executed by a terminal. In other words, the method may be performed by software or hardware installed in the terminal. As shown in fig. 6, the method may include the following steps.
S601, the UE monitors the PDCCH to acquire the short message scrambled by the P-RNTI.
Wherein, a bit is added in the content of the short message to indicate the MBS service change.
And S602. after receiving the service change indication, the UE receives the paging or directly receives the MCCH without receiving the paging.
And S603, the UE starts MBS service receiving through MTCH configuration information configured by the MCCH.
Example four
In this embodiment, the network side device notifies MBS service change using DCI.
In this embodiment, the service change notification method may include the following steps:
1. and the network side equipment informs the MCCH change notification through the DCI scrambled by the M-RNTI. M-RNTI format 1C, and the value of RNTI is FFFA.
2. And after receiving the notification, the UE receives the MCCH.
3. And according to the MTCH configured by the MCCH, the terminal starts MBS service receiving.
In the service change notification method provided in the embodiment of the present application, the execution main body may be a service change notification device, or a control module in the service change notification device for executing the service change notification method. In the embodiment of the present application, a service change notification method executed by a service change notification apparatus is taken as an example, and the service change notification apparatus provided in the embodiment of the present application is described.
Fig. 7 is a schematic structural diagram of a service change notification apparatus according to an embodiment of the present application, and as shown in fig. 7, the apparatus 700 mainly includes: a first determining module 701, configured to determine that a service change of a target multicast broadcast service MBS needs to be notified; a notification module 702, configured to send a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
In an alternative implementation, the notification module 702 sends a service change notification message to a group of terminals corresponding to the MBS packet by one of:
sending a service change notification message to the group of terminals through a downlink common control channel;
and sending a service change notification message to the group of terminals through a paging channel.
In an optional implementation manner, the notification module 702 sends a service change notification message to the group of terminals through a downlink common control channel, where the service change notification message includes one of:
sending first downlink control information DCI through the downlink common control channel, wherein the first DCI carries a service change notification message and is scrambled through a first RNTI, and the first RNTI corresponds to the target MBS;
and sending a short message through the downlink common control channel, wherein the short message carries a service change notification message and is scrambled through a second RNTI.
In an optional implementation manner, the sending, by the notification module 702, a service change notification message to the group of terminals through a downlink common control channel includes:
and sending the downlink common control channel on a specific resource set and/or search space corresponding to a group of the terminals, wherein the specific resource set and/or search space is a resource set and/or search space which is configured for the terminal by the network side equipment and is dedicated for MBS paging.
In an optional implementation manner, the notifying module 702 performs the service change notification on the group of terminals through a paging channel, where the service change notification includes one of:
sending a service change notification message to the group of terminals at a first paging position, wherein the first paging position is used for paging of multiple services of the terminals, the service change notification message is scrambled by a first RNTI, and the first RNTI corresponds to the target MBS;
sending a service change notification message to the group of terminals at a second paging location, wherein the second paging location is dedicated for paging of the target MBS of the terminals.
In an alternative implementation, the second paging location is determined by at least one of:
determining a specific resource set and/or a search space configured for a group of terminals by network side equipment, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging;
determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification information of the target MBS.
In an optional implementation manner, the notifying module 702 sends a service change notification message to a group of terminals of the target MBS, including:
if the service change notification message notifies the session suspension of the target MBS or the session stop of the target MBS, sending a specific MAC CE to the group of terminals, wherein the specific MAC CE indicates the session suspension of the target MBS or indicates the session stop of the target MBS.
The service change notification apparatus provided in the embodiment of the present application can implement each process implemented by the network side device in the method embodiments of fig. 2 to fig. 6, and achieve the same technical effect, and is not described here again to avoid repetition.
Fig. 8 is a schematic structural diagram of another service change notification apparatus according to an embodiment of the present application, and as shown in fig. 8, the apparatus 800 may include: a second determining module 801, configured to determine an MBS group to which a target MBS of the terminal belongs; a receiving module 802, configured to receive a service change notification message sent by a network side device to a group of terminals corresponding to the MBS group at the same time.
In an optional implementation manner, the second determining module 801 is further configured to determine, according to the MBS notification change indication in the service change notification message, whether information included in the service change notification message is the same as a service change notification message received last time, and if the information is different from the MBS notification change indication, continue to analyze the service change notification message.
In an optional implementation manner, the receiving module 802 receives a service change notification message sent by a network side device to a group of terminals corresponding to the MBS group at the same time, where the service change notification message includes one of the following:
receiving the service change notification message sent through a downlink common control channel;
and receiving the service change notification message sent through a paging channel.
In an optional implementation manner, the receiving module 802 receives a service change notification message sent by the network side device to the group of terminals through a downlink common control channel, where the service change notification message includes one of:
monitoring the downlink common control channel by using a first RNTI and a second RNTI respectively, and acquiring a first DCI through the first RNTI, wherein the first DCI carries the service change notification message, and the first RNTI corresponds to the target MBS;
and receiving a short message sent through the downlink common control channel, and descrambling the short message by using a second RNTI, wherein the short message carries a service change notification message.
In an optional implementation manner, the receiving module 802 receives the service change notification message sent through a paging channel, where the service change notification message includes one of:
monitoring at a first paging position by using a first RNTI and a second RNTI respectively, and acquiring the service change notification message through the first RNTI, wherein the first paging position is used for paging of multiple services of the terminal, the first RNTI corresponds to the target MBS, and the second RNTI corresponds to services except the target MBS in the multiple services;
receiving the service change notification message at a second paging location, wherein the second paging location is dedicated for paging of the target MBS of the terminal.
In an alternative implementation, the second determining module 801 is further configured to at least one of:
determining the second paging position according to a specific resource set and/or a search space configured by the network side equipment for the terminal, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging;
determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification of the target MBS.
In an optional implementation manner, the receiving module 802 is further configured to receive a specific MAC CE sent by a network side device, where the specific MAC CE indicates that a session of the target MBS is suspended or indicates that a session of the target MBS stops.
The service change notification device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.
The service change notification device provided in the embodiment of the present application can implement each process implemented by the terminal in the method embodiments of fig. 2 to fig. 6, and achieve the same technical effect, and is not described here again to avoid repetition.
The service change notification device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
Optionally, as shown in fig. 9, an embodiment of the present application further provides a communication device 900, which includes a processor 901, a memory 902, and a program or an instruction stored in the memory 902 and executable on the processor 901, for example, when the communication device 900 is a terminal, the program or the instruction is executed by the processor 901 to implement each process of the foregoing service change notification method embodiment, and the same technical effect can be achieved. When the communication device 900 is a network-side device, the program or the instruction is executed by the processor 901 to implement each process implemented by the AMF or the network-side device in the foregoing service change notification method embodiment, and the same technical effect can be achieved, and in order to avoid repetition, details are not described here again. When the communication device 900 is a terminal, the program or the instruction is executed by the processor 901 to implement each process implemented by the terminal in the above-mentioned service change notification method embodiment, and the same technical effect can be achieved, and for avoiding repetition, the description is omitted here.
Fig. 10 is a schematic hardware structure diagram of a terminal implementing the embodiment of the present application.
The terminal 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.
Those skilled in the art will appreciate that terminal 1000 can also include a power supply (e.g., a battery) for powering the various components, which can be logically coupled to processor 1010 via a power management system to provide management of charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 10 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.
It should be understood that in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
In this embodiment of the application, the radio frequency unit 1001 receives downlink data from a network side device and then processes the downlink data to the processor 1010; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, and the like) required for at least one function, and the like. Further, the Memory 1009 may include a high-speed random access Memory and may also include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
Processor 1010 may include one or more processing units; alternatively, processor 1010 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1010.
The processor 1010 is configured to determine an MBS group to which a target MBS of the terminal belongs.
A radio frequency unit 1001, configured to receive a service change notification message sent by a network side device to a group of terminals corresponding to the MBS packet.
Specifically, the embodiment of the application further provides a network side device. As shown in fig. 11, the network device 1100 includes: antenna 1101, radio frequency device 1102, baseband device 1103. An antenna 1101 is connected to the radio frequency device 1102. In the uplink direction, the rf device 1102 receives information via the antenna 1101, and sends the received information to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes information to be transmitted and transmits the processed information to the rf device 1102, and the rf device 1102 processes the received information and transmits the processed information through the antenna 1101.
The above-mentioned band processing means may be located in the baseband apparatus 1103, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1103, where the baseband apparatus 1103 includes a processor 1104 and a memory 1105.
The baseband apparatus 1103 may include, for example, at least one baseband board, and the baseband board is provided with a plurality of chips, as shown in fig. 11, where one chip, for example, the processor 1104, is connected to the memory 1105 and is used to call up a program in the memory 1105 and perform the network side device operations shown in the above method embodiments.
The baseband apparatus 1103 may further include a network interface 1106, such as a Common Public Radio Interface (CPRI), for exchanging information with the rf apparatus 1102.
Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 1105 and capable of being executed on the processor 1104, and the processor 1104 invokes the instructions or programs in the memory 1105 to execute the methods executed by the modules shown in fig. 7, so as to achieve the same technical effects, and are not described herein in detail in order to avoid repetition.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing service change notification method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor may be the processor in the terminal described in the above embodiment, or the processor in the network side device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction of a network side device or a terminal, so as to implement each process of the above embodiment of the service change notification method, and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
The embodiment of the present application further provides a computer program product, where the computer program product includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, and when the program or the instruction is executed by the processor, the process of the embodiment of the service change notification method is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (49)

1. A method for notifying service change, comprising:
when notifying the service change of the target multicast broadcast service MBS, the network side equipment simultaneously sends a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
2. The method according to claim 1, wherein the parameters of at least one of the following terminals in the group of terminals are the same or have an associated relationship:
session identification of MBS;
a session index of the MBS;
service identification of MBS;
a session group identifier of the MBS;
a quality of service, QoS, flow identification;
a temporary mobile group identity, TMGI;
a TMGI group identifier;
GMS radio network temporary identity G-RNTI;
internet protocol IP address of MBS.
3. The method of claim 1, wherein the service change notification message comprises at least one of:
identification information of the target MBS;
the service type notified by the service change notification message;
MBS notification change indication is used for indicating whether the content of the service change notification message is the same as the content of the service change notification message sent last time.
4. The method of claim 1, wherein sending a service change notification message to a group of terminals corresponding to the MBS packet comprises one of:
the network side equipment sends a service change notification message to the group of terminals through a downlink common control channel;
and the network side equipment sends a service change notification message to the group of terminals through a paging channel.
5. The method according to claim 4, wherein the network side device sends the service change notification message to the group of terminals through a downlink common control channel, where the service change notification message includes one of:
the network side equipment sends first downlink control information DCI through the downlink common control channel, wherein the first DCI carries a service change notification message and is scrambled through a first RNTI, and the first RNTI corresponds to the target MBS;
and the network side equipment sends a short message through the downlink common control channel, wherein the short message carries a service change notification message and is scrambled through a second RNTI.
6. The method of claim 5, wherein the network side device sends a service change notification message to the group of terminals through a downlink common control channel, and the method includes:
and the network side equipment sends the downlink common control channel on a specific resource set and/or a search space corresponding to a group of the terminals, wherein the specific resource set and/or the search space are resource sets and/or search spaces which are configured for the terminals by the network side equipment and are specially used for MBS paging.
7. The method according to claim 5, wherein if the network side device sends the short message through the downlink common control channel, the method further comprises:
and the network side equipment transmits second DCI, wherein the second DCI is used for notifying the arrival of the short message, and the second DCI uses the second RNTI for scrambling.
8. The method of claim 5, wherein the information carried in the short message further comprises at least one of:
system information change instruction information;
indication information of an earthquake and tsunami warning system ETWS;
indication information of a commercial mobile alert service, CMAS;
indication information indicating stopping of paging listening.
9. The method of claim 4, wherein the network side device performs the service change notification on the group of terminals through a paging channel, and the method comprises one of:
the network side equipment sends a service change notification message to the group of terminals at a first paging position, wherein the first paging position is used for paging of multiple services of the terminals, the service change notification message is scrambled through a first RNTI, and the first RNTI corresponds to the target MBS;
and the network side equipment sends a service change notification message to the group of terminals at a second paging position, wherein the second paging position is specially used for paging the target MBS of the terminal.
10. The method according to claim 5 or 9, wherein the first RNTI is determined according to identification information of the target MBS, wherein the identification information includes parameters of at least one of the following:
the session identification of the target MBS;
a session index of the target MBS;
the service identification of the target MBS;
a session group identifier of the target MBS;
the QoS flow identification of the target MBS;
a Temporary Mobile Group Identity (TMGI) of the target MBS;
the group identification of the TMGI of the target MBS;
G-RNTI of the target MBS;
the IP address of the target MBS.
11. The method of claim 10, wherein the first RNTI is determined by one of:
truncating part of bits from the identification information of the target MBS to be used as the first RNTI;
selecting MSB (most significant bit) or LSB (least significant bit) from all parameters contained in the identification information of the target MBS to carry out cascade connection to obtain the first RNTI (radio network temporary identifier);
taking each parameter contained in the identification information of the target MBS as a parameter, and taking a result obtained by adopting a predetermined algorithm as the first RNTI;
combining each parameter contained in the identification information of the target MBS with a mobile country code MCC or a mobile network number MNC to obtain the first RNTI;
and according to a one-to-one mapping relation between preset MBS identification information and RNTI, taking the RNTI which has a mapping relation with the target MBS identification information as the first RNTI.
12. The method of claim 9, wherein the second paging location is determined by at least one of:
determining a specific resource set and/or a search space configured for a group of terminals by network side equipment, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging;
determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification information of the target MBS.
13. The method of claim 12, wherein the paging frame PF and the paging opportunity PO corresponding to the second paging location satisfy the following formula:
(SFN+PF_offset)mod T＝(T div N)*(MBS_SERVICE_ID mod N)；
i_s＝floor(MBS_SERVICE_ID/N)mod Ns；
the SFN is a system frame where the PF is located, PF _ offset is a location offset of the PF, T is a paging cycle of the target MBS, N is a number of PFs existing in the paging cycle, i _ s is an i _ s-th PO in one PF, MBS _ SERVICE _ ID is identification information of the target MBS, i _ s is an integer greater than 0 and smaller than Ns, and Ns is a number of POs included in one PF, where the identification information includes at least one of the following parameters: the session identification of the target MBS; a session index of the target MBS; the service identification of the target MBS; a session group identifier of the target MBS; the QoS flow identification of the target MBS; a Temporary Mobile Group Identity (TMGI) of the target MBS; the group identification of the TMGI of the target MBS; G-RNTI of the target MBS; the IP address of the target MBS.
14. The method of claim 12, wherein the paging cycle of the target MBS satisfies one of the following:
paging cycles of different MBS are different;
the paging cycles of service sessions of different MBS are different;
the paging cycles of different MBS services are different;
the paging cycles of the session groups of different MBS are different;
the paging cycle of the TMGI packets of different MBS is different.
15. The method of claim 9, wherein the second paging location is located within an active period of a Discontinuous Reception (DRX) cycle of the target MBS.
16. The method according to any of claims 1 to 15, wherein the service type notified by the service change notification message comprises one of:
starting a session of the target MBS;
the session of the target MBS is suspended;
session recovery of the target MBS;
the session of the target MBS stops.
17. The method of claim 16, wherein if the service change notification message notifies the target MBS that the session is suspended or the session of the target MBS is stopped, sending the service change notification message to a group of terminals of the target MBS, comprises:
and sending a specific MAC CE to the group of terminals, wherein the specific MAC CE indicates the session suspension of the target MBS or indicates the session stop of the target MBS.
18. A method for notifying service change, comprising:
the terminal receives the service change notification message sent by the network side equipment to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
19. The method according to claim 18, wherein the service change notification message includes at least one of:
identification information of the target MBS;
the service type notified by the service change notification message;
MBS notification change indication is used for indicating whether the content of the service change notification message is the same as the content of the service change notification message sent last time.
20. The method of claim 19, wherein after receiving a service change notification message sent by a network side device to a group of terminals corresponding to the MBS packet at the same time, the method further comprises:
and determining whether the information contained in the service change notification message is the same as the service change notification message received last time or not according to the MBS notification change indication in the service change notification message, and if not, continuously analyzing the service change notification message.
21. The method of claim 19, wherein receiving the service change notification message sent by the network-side device to a group of terminals corresponding to the MBS packet at the same time comprises one of:
receiving the service change notification message sent through a downlink common control channel;
and receiving the service change notification message sent through a paging channel.
22. The method of claim 21, wherein receiving the service change notification message sent by the network side device to the group of terminals through a downlink common control channel comprises one of:
the terminal monitors the downlink common control channel by using a first RNTI and a second RNTI respectively, and acquires a first DCI through the first RNTI, wherein the first DCI carries the service change notification message, and the first RNTI corresponds to the target MBS;
and receiving a short message sent through the downlink common control channel, and descrambling the short message by using a second RNTI, wherein the short message carries a service change notification message.
23. The method of claim 22, wherein receiving the service change notification message sent by the network side device to the group of terminals through a downlink common control channel comprises:
and detecting the service change notification message sent by the network side equipment in a resource set and/or a search space which is configured for the terminal by the network side equipment and is specially used for MBS paging.
24. The method of claim 22, wherein if the short message is received, the method further comprises:
and receiving second DCI, wherein the second DCI is used for notifying the arrival of the short message, and the second DCI uses the second RNTI for scrambling.
25. The method of claim 22, wherein the information carried in the short message further comprises at least one of:
system information change instruction information;
indication information of an earthquake and tsunami warning system ETWS;
indication information of a commercial mobile alert service, CMAS;
indication information indicating stopping of paging listening.
26. The method of claim 19, wherein receiving the service change notification message sent over a paging channel comprises one of:
monitoring at a first paging position by using a first RNTI and a second RNTI respectively, and acquiring the service change notification message through the first RNTI, wherein the first paging position is used for paging of multiple services of the terminal, the first RNTI corresponds to the target MBS, and the second RNTI corresponds to services except the target MBS in the multiple services;
receiving the service change notification message at a second paging location, wherein the second paging location is dedicated for paging of the target MBS of the terminal.
27. The method of claim 26, wherein prior to receiving the service change notification message at the second paging location, the method further comprises at least one of:
determining the second paging position according to a specific resource set and/or a search space configured by the network side equipment for the terminal, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging;
determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification of the target MBS.
28. The method according to any of the claims 18 to 27, wherein the service type notified by the service change notification message comprises one of:
starting a session of the target MBS;
the session of the target MBS is suspended;
session recovery of the target MBS;
the session of the target MBS stops.
29. The method of claim 28, wherein receiving a service change notification message sent by a network side device to the terminal of the MBS packet further comprises:
and receiving a specific MAC CE sent by network side equipment, wherein the specific MAC CE indicates the session suspension of the target MBS or indicates the session stop of the target MBS.
30. The method according to any of claims 18 to 27, wherein after receiving the service change notification message sent by the network side device to the terminal of the MBS packet, the method further comprises: the terminal acquires the service resource of the target MBS through at least one of the following steps:
obtaining through a system message;
obtaining through a paging message;
obtaining through RRC signaling;
acquiring a multimedia broadcast multicast service control channel (MCCH) through a multicast common control channel;
the MTCH is acquired through a multicast transport channel.
31. The method of claim 30, wherein the service resources of the target MBS comprises at least one of:
configuration information of the MCCH;
configuration information of an MBS transmission channel MTCH;
a logical channel mapping relationship;
RB configuration;
and (4) QoS configuration.
32. The method of claim 28, wherein after receiving a service change notification message sent by a network side device to the terminal of the MBS packet, the method further comprises:
if the service type notified by the service change notification message is the session start of the target MBS, the terminal acquires the service resources of the target MBS, maps the logic information of the target MBS, establishes a multicast Management Routing Bridge (MRB), enters the activation state of the target MBS and starts the service reception of the MBS;
if the service type notified by the service change notification message is the session stop of the target MBS, the terminal ends the service reception of the target MBS, deactivates the target MBS and releases the service resources of the target MBS;
if the service type notified by the service change notification message is the session suspension of the target MBS, the terminal executes one of the following: reserving MTCH of the target MBS, suspending the target MBS service and keeping the activation state of the target MBS; reserving MCCH of the target MBS, not reserving MTCH of the target MBS service, and entering a deactivation state of the target MBS; deactivating the target MBS and releasing the service resource of the target MBS;
if the service type notified by the service change notification message is the session recovery of the target MBS, the terminal executes one of the following: and activating the target MBS, if the service resource of the target MBS is released, acquiring the service resource of the target MBS, and recovering the service reception of the target MBS.
33. A service change notification apparatus, comprising:
the first determining module is used for determining the service change of the target multicast broadcast service MBS needing to be notified;
and the notification module is used for simultaneously sending a service change notification message to a group of terminals corresponding to the MBS group according to the MBS group to which the target MBS belongs.
34. The apparatus of claim 33, wherein the notification module sends a service change notification message to a group of terminals corresponding to the MBS packet by one of:
sending a service change notification message to the group of terminals through a downlink common control channel;
and sending a service change notification message to the group of terminals through a paging channel.
35. The apparatus of claim 34, wherein the notification module sends a service change notification message to the group of terminals through a downlink common control channel, and wherein the service change notification message comprises one of:
sending first downlink control information DCI through the downlink common control channel, wherein the first DCI carries a service change notification message and is scrambled through a first RNTI, and the first RNTI corresponds to the target MBS;
and sending a short message through the downlink common control channel, wherein the short message carries a service change notification message and is scrambled through a second RNTI.
36. The apparatus of claim 35, wherein the notifying module sends the service change notification message to the group of terminals through a downlink common control channel, and comprises:
and sending the downlink common control channel on a specific resource set and/or search space corresponding to a group of the terminals, wherein the specific resource set and/or search space is a resource set and/or search space which is configured for the terminal by the network side equipment and is dedicated for MBS paging.
37. The apparatus of claim 34, wherein the notifying module performs a service change notification for the group of terminals through a paging channel, and comprises one of:
sending a service change notification message to the group of terminals at a first paging position, wherein the first paging position is used for paging of multiple services of the terminals, the service change notification message is scrambled by a first RNTI, and the first RNTI corresponds to the target MBS;
sending a service change notification message to the group of terminals at a second paging location, wherein the second paging location is dedicated for paging of the target MBS of the terminals.
38. The apparatus of claim 37, wherein the second paging location is determined by at least one of:
determining a specific resource set and/or a search space configured for a group of terminals by network side equipment, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging;
determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification information of the target MBS.
39. The apparatus of claim 33, wherein the notifying module sends a service change notification message to a group of terminals of the target MBS, comprising:
if the service change notification message notifies the session suspension of the target MBS or the session stop of the target MBS, sending a specific MAC CE to the group of terminals, wherein the specific MAC CE indicates the session suspension of the target MBS or indicates the session stop of the target MBS.
40. A service change notification apparatus, comprising:
a second determining module, configured to determine an MBS group to which a target MBS of the terminal belongs;
and the receiving module is used for receiving the service change notification message sent by the network side equipment to a group of terminals corresponding to the MBS grouping at the same time.
41. The apparatus of claim 40, wherein the second determining module is further configured to determine whether the information included in the service change notification message is the same as the last received service change notification message according to the MBS notification change indication in the service change notification message, and if the information is not the same, continue parsing the service change notification message.
42. The apparatus of claim 40, wherein the receiving module receives a service change notification message sent by a network side device to a group of terminals corresponding to the MBS packet at the same time, and the service change notification message comprises one of:
receiving the service change notification message sent through a downlink common control channel;
and receiving the service change notification message sent through a paging channel.
43. The apparatus of claim 42, wherein the receiving module receives a service change notification message sent by the network side device to the group of terminals through a downlink common control channel, where the service change notification message includes one of:
monitoring the downlink common control channel by using a first RNTI and a second RNTI respectively, and acquiring a first DCI through the first RNTI, wherein the first DCI carries the service change notification message, and the first RNTI corresponds to the target MBS;
and receiving a short message sent through the downlink common control channel, and descrambling the short message by using a second RNTI, wherein the short message carries a service change notification message.
44. The apparatus of claim 42, wherein the receiving module receives the service change notification message sent through a paging channel, and comprises one of:
monitoring at a first paging position by using a first RNTI and a second RNTI respectively, and acquiring the service change notification message through the first RNTI, wherein the first paging position is used for paging of multiple services of the terminal, the first RNTI corresponds to the target MBS, and the second RNTI corresponds to services except the target MBS in the multiple services;
receiving the service change notification message at a second paging location, wherein the second paging location is dedicated for paging of the target MBS of the terminal.
45. The apparatus of claim 44, wherein the second determining module is further configured to at least one of:
determining the second paging position according to a specific resource set and/or a search space configured by the network side equipment for the terminal, wherein the specific resource set and/or the search space are resource sets and/or search spaces dedicated for MBS paging;
determining the second paging location according to target parameters, wherein the target parameters include: paging cycle of the target MBS, paging frame number included in one paging cycle, and identification of the target MBS.
46. The apparatus of claim 40, wherein the receiving module is further configured to receive a specific MAC CE sent by a network side device, wherein the specific MAC CE indicates that a session of the target MBS is suspended or indicates that a session of the target MBS is stopped.
47. A network-side device, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the service change notification method according to any one of claims 1 to 17.
48. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the service change notification method according to any of claims 18 to 32.
49. A readable storage medium, characterized in that a program or instructions are stored thereon, which program or instructions, when executed by the processor, implement the service change notification method according to any one of claims 1 to 17, or the steps of the service change notification method according to any one of claims 18 to 32.
CN202011120246.4A 2020-10-19 2020-10-19 Service change notification method, terminal and network side equipment Pending CN114374937A (en)

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