CN115150758A - User equipment, base station, communication system and communication method - Google Patents

Abstract

The invention provides user equipment, a base station, a communication system and a communication method, which are characterized by comprising the following steps: if the user equipment does not need to receive data corresponding to one or more RBs temporarily, the side of the user equipment sends suspension state indication information, the user equipment stops receiving, stops uplink feedback and resetting or starts receiving, starts uplink feedback and resetting according to actual conditions, and at the side of the base station, after receiving the suspension state indication information, the base station correspondingly knows which radio bearers with the identity identifier enter or leave the suspension state, and further judges whether the radio bearer entering the suspension state is multicast or unicast or further combined with a suspension number threshold value to determine.

Description

User equipment, base station, communication system and communication method

Technical Field

The invention belongs to the technical field of communication, and particularly relates to user equipment, a base station, a communication system and a communication method for improving resource utilization rate.

Background

With the rapid development of the internet and the popularization of large-screen multifunctional user equipment, a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as video conferences, television broadcasts, video on demand, advertisements, online education, interactive games and the like, appear, and the services not only meet the multi-service requirements of mobile users, but also bring new service growth points for mobile operators. These mobile data multimedia services require that multiple users can receive the same data at the same time, and compared with general data services, the mobile data multimedia services have the characteristics of large data volume, long duration, insensitivity to time delay and the like.

In order to efficiently utilize mobile network resources, the third generation partnership project (3 GPP) has proposed Multimedia Broadcast Multicast Service (MBMS). The service is a technology for transmitting data from one data source to a plurality of target user equipment, realizes sharing of network (including a core network and an access network) resources, and improves utilization rate of the network resources (especially air interface resources). The MBMS service defined by 3GPP can not only implement pure text low-rate message multicast and broadcast, but also implement broadcast and multicast of high-speed multimedia service, providing various rich video, audio and multimedia services, which undoubtedly follows the development trend of future mobile data, and provides better service prospects for the development of mobile broadband communications.

An MBMS technology studied in a Long Term Evolution (LTE) system, called evolved Multimedia Broadcast Multicast Service (E-MBMS), is a key technology for providing real-time/non-real-time Multimedia services to users through a Multicast/Broadcast mode at an air interface layer. eMBMS enables broadcast transmission of high-speed multimedia services (PTM), providing rich video, audio, and multimedia services.

The eMBMS is further developed in the 5G system, so that the capability of the whole broadcast system is improved, and application scenarios of higher-speed and more-efficient 5G broadcasts, such as future, 4K/8K ultra-high-definition video, three-dimensional stereoscopic video, multi-view video, VR (virtual reality)/AR (augmented reality), and other high-quality multimedia services, can be supported, and this will greatly promote the expansion of broadcast television to mobile terminals in the future, and bring prosperity of the high-definition video market. The NR MBS research topic has been established for this 3GPP, which identifies that flexible broadcast/multicast services are the basic capabilities that 5G systems should have, and lists a range of potential requirements, such as:

(1) A 5G system should only support downlink-only broadcast/multicast operation within a particular geographic area (e.g., a sector, a cell, or a group of cells).

(2) For fixed and mobile services, the 5G system should support the operation of the downstream broadcast/multicast system in a spectrally efficient manner over a wide geographical area. A 5G system should support operation of a downlink-only broadcast/multicast system over a wide geographic area with efficient spectrum.

(3) The 5G system should allow the operator to reserve radio resources of 0% to 100% of one or more radio carriers in order to transmit broadcast/multicast content.

(4) The 5G network should allow the UE to receive content through a broadcast/multicast wireless operator while conducting concurrent data sessions through another wireless operator.

(5) A 5G system should be able to support broadcast/multicast of UHD streaming video (e.g., 4K/8K UHD).

(6) The 5G network should allow operators to configure and broadcast/multicast content at multiple quality levels (e.g., video resolution) for the same user service in a stand-alone 3 GPP-based broadcast/multicast system.

(7) Considering differences in UE capabilities, radio characteristics, application information and the like, the 5G network should support the parallel transmission of multiple quality levels (i.e., video resolution) of broadcast/multicast content for the same user service to the same UE.

(8) The 5G system should support the parallel transmission of multiple multicast/broadcast user services to the UE.

(9) The 5G system should support an independent multicast/broadcast network consisting of a plurality of units, and the distance between sites can reach 200km. The 5G system should support a stand-alone multicast/broadcast network comprising a plurality of cells with inter-site distances of up to 200km.

(10) The 5G system should support multicast/broadcast over a 5G satellite access network or over a combination of a 5G satellite access network and other 5G access networks.

In the prior art, the problems of optimizing the utilization efficiency of network resources and reducing the power loss of the UE in a suspended state are not considered.

Disclosure of Invention

In order to solve the technical problems, the invention provides user equipment, a base station, a communication system and a communication method, which consider that unnecessary transmission waste is avoided during a suspension state of UE (user equipment), so that the utilization efficiency of network resources is optimized, the power loss of the UE is reduced, and the system performance is improved.

In order to achieve the above object, the present invention provides a user equipment, comprising: when the user equipment enters or leaves the pause state for the data carried by one or more radio bearers, the user equipment sends pause state indication information to a base station as external equipment, wherein the pause state indication information comprises identification information of the radio bearer corresponding to the entering or leaving pause state, and the pause state indication information is used for indicating the user equipment to enter or leave the pause state to stop or start receiving the data carried by the radio bearer.

In the user equipment provided by the present invention, further optionally, the ue may further have a feature, where the suspension state indication information includes first indication information and/or second indication information, and when the user equipment enters the suspension state for data carried by one or more radio bearers, the first indication information is sent to a base station as an external device, where the first indication information includes identification information of a radio bearer corresponding to the entry of the suspension state, and is used to instruct the user equipment to enter the suspension state to stop receiving data carried by the radio bearer, and/or when the user equipment leaves the suspension state for data carried by one or more radio bearers, the second indication information is sent to the base station as an external device, and the second indication information includes identification information of a radio bearer corresponding to the leaving the suspension state, and is used to instruct the user equipment to leave the suspension state to restart receiving data carried by the radio bearer.

In the user equipment provided by the present invention, further optionally, the user equipment may further have a feature that, when the user equipment enters a suspended state for data carried by one or more radio bearers, the method includes the step (11) of sending the first indication information, or further includes at least one of: step (12) stopping receiving data carried by the radio bearer; step (13) stopping uplink feedback; and step (14) resetting, wherein, the steps (11) to (14) are not sequential, and when the user equipment leaves the suspend state for the data carried by the one or more radio bearers, the step (21) of sending the second indication information is included, or further includes at least one of the following steps: step (22) begins to receive data carried by the radio bearer; step (23) starting uplink feedback; and step (24) resetting, wherein the steps (21) to (24) are not separated.

In the user equipment provided by the present invention, further optionally, there may be a feature wherein the pause state indication information at least contains a pause function indicator, and the number of all MAC CE formats required to support entering or leaving the pause state RBID determines the length of the pause function indicator.

In the user equipment provided by the present invention, further optionally, the user equipment may further have a feature in which, when the user equipment needs to continue receiving data after a period of time, the stop receiving within the period of time is not enough to start a leave session procedure (leave session) for determining the suspended state, the user equipment enters or leaves the suspended state with the granularity of radio bearers.

In the user equipment provided by the present invention, further optionally, the method may further include entering a suspend state, including the following entering manners: a pause key of the application is pressed; or the application is suspended, and leaves the suspended state, including the following leaving modes: the pause key of the application is released; or the application is woken up or activated.

In the user equipment provided by the present invention, further optionally, the method may further include a feature, wherein the suspension state indication information is transmitted in a network architecture by any one of the following methods: physical Layer (PHY) information; radio Resource Control (RRC) layer information; or a Medium Access control element (mac ce).

In the user equipment provided by the present invention, further optionally, the ue may further have a feature, wherein the suspend state indication information is transmitted through a MAC CE, and in a case that the suspend state indication information is used to indicate that the suspend state is entered, the MAC CE carrying the suspend state indication information includes: an identity RBID of one or more suspended state radio bearers, or further in free combination with a timer; when the suspend state indication information is used to indicate leaving the suspend state, the format of the MAC CE carrying the suspend state indication information includes: 1. the identity of one or more radio bearers leaving the suspended state identifies the RBID.

In the user equipment provided by the present invention, further optionally, the user equipment may further have a feature, wherein the timer includes a first timer and/or a second timer, wherein the first timer is configured to indicate: a time period for not receiving the data carried by the radio bearer, and if the time period exceeds the time period of the first timer, restarting to receive the data carried by the radio bearer, wherein the second timer is used for indicating: when the end point of the time period of the second timer is reached, if it is known that the ue still does not restart receiving data carried by the radio bearer, it is determined that the ue starts a leave session (leave session), the time period length of the second timer is greater than the time period length of the first timer, and the identities (RBIDs) of the radio bearers are respectively collocated with the first timer and/or the second timer which are independently set up.

In the user equipment provided by the present invention, further optionally, the user equipment may further have a feature that, the MAC CE format carrying the suspension status indication information has different format types, the format types are determined by preset communication protocol requirements and are all or partially introduced, and one MAC CE format is introduced between the user equipment and the external equipment to be transmitted according to the current actual transmission conditions.

In the user equipment provided by the present invention, further optionally, the present invention may further have a feature, wherein the current actual transmission condition includes the number of suspended radio bearers, the existence or nonexistence of timers, the type of included timers, and a timing duration to determine the MAC CE format of the suspended state indication information.

In the user equipment provided by the present invention, further optionally, the method may further have a characteristic that the generating of the MAC information subheader corresponding to the MAC CE includes: a logical channel ID field (LCID) field and/or a further extended logical channel ID field (eLCID) field, and a new LCID value or a new eLCID value is matched and introduced into the LCID assignment definition table or the eLCID assignment definition table according to the type and the number of all or part of introduced MAC CE formats.

In the user equipment provided by the present invention, further optionally, the method may further have a characteristic that the step of determining that the data carried by the RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel includes: the user equipment can know that the data carried by the RB is transmitted by a multicast channel or a unicast channel through the identity RBID.

In the user equipment provided by the present invention, further optionally, the method may further include, before the determining that the user equipment leaves the suspended state, the: the user equipment enters the suspended state, or enters the suspended state which is determined by utilizing the preset continuous error packet threshold value.

In the user equipment provided by the present invention, further optionally, the user equipment may further have a feature that the control section, the application layer section, the PDCP section, the RLC section, the MAC section, and the communication section, the storage section, wherein when the application layer section receives an instruction to enter or leave the suspend state or when the user equipment is determined to enter or leave the suspend state, the control section controls the MAC section to generate suspend state indication information and controls the communication section to transmit the suspend state indication information.

In the user equipment provided by the present invention, further optionally, there may be a feature wherein the PDCP unit, the RLC unit, and the storage unit, wherein the suspend state is entered, the control unit controls the communication unit to stop receiving data, controls the PDCP unit and the RLC unit not to perform uplink feedback, the control unit controls the communication unit to start receiving data, controls the PDCP unit and the RLC unit to start uplink feedback, and resets the memory unit, the PDCP unit and the RLC unit.

In order to achieve the above object, the present invention provides a base station communicatively connected to the user equipment described above, including: the base station receives suspension state indication information sent by user equipment, acquires an identification (RBID) of a radio bearer entering a suspension state in the suspension state indication information, judges whether data borne by an RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel, and executes at least one of the following on the unicast channel corresponding to the RB in a non-sequential manner when the data transmission is carried out through the unicast channel: stopping new transmission, stopping retransmission and resetting, further judging whether the RB reaches a pause quantity threshold value when data transmission is carried out through a multicast channel, and when the RB reaches the pause quantity threshold value, executing any one of the following multicast channels corresponding to the Rb in a non-sequential manner: stopping new transmission, stopping retransmission and resetting, when the new transmission, the retransmission and the resetting are not reached, the multicast channel corresponding to the RB Su is not influenced, and/or the base station receives pause state indication information sent by user equipment, acquires the identity identifier RBID of the radio bearer leaving the pause state in the pause state indication information, and the base station carries out any one of the following operations on the channel corresponding to the related RB in no sequence: start new transmission, start retransmission, reset.

In the base station provided by the present invention, further optionally, the base station may further have a characteristic that, wherein it is determined that data carried by an RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel, the step includes: the base station can know that the data carried by the RB is transmitted by a multicast channel or a unicast channel through the identity RBID.

In the base station provided by the present invention, further optionally, the base station may further have a feature, wherein, the identity RBID is previously distinguished as MRB (MBMS/MBS radio bearer) or DRB (Data radio bearer) and stored.

In the base station provided by the present invention, further optionally, the base station may further have a characteristic that, when the threshold of the number of pauses is lower than 100%, there may be a case where the remaining user equipments in the multicast group in which the multicast is stopped need to continue receiving data corresponding to the radio bearer RB, and then the base station establishes a unicast channel for the radio bearer RB and respectively sends the data in a unicast manner.

In order to achieve the above object, the present invention provides a communication system including: at least one user equipment is in communication connection with at least one base station, wherein the user equipment is the user equipment described in any item above, and the base station is the base station described in any item above.

In addition, in order to achieve the above object, the present invention further provides a communication method, adapted to a user equipment side, comprising the steps of: when the user equipment enters or leaves the pause state for the data carried by one or more radio bearers, the user equipment sends pause state indication information to a base station as external equipment, wherein the pause state indication information comprises identification information of the radio bearer corresponding to the entering or leaving pause state, and the pause state indication information is used for indicating the user equipment to enter or leave the pause state to stop or start receiving the data carried by the radio bearer.

In order to achieve the above object, the present invention provides a communication method applied to a base station, including: the base station receives suspension state indication information sent by user equipment, acquires an identification (RBID) of a radio bearer entering a suspension state in the suspension state indication information, judges whether data borne by an RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel, and executes at least one of the following steps in a non-sequential manner on the unicast channel corresponding to the RB when the data transmission is carried out through the unicast channel: stopping new transmission, stopping retransmission and resetting, further judging whether the RB reaches a pause quantity threshold value when data transmission is carried out through a multicast channel, and when the RB reaches the pause quantity threshold value, executing any one of the following multicast channels corresponding to the Rb in a non-sequential manner: stopping new transmission, stopping retransmission and resetting, when not reaching, the multicast channel corresponding to the RB Su is not influenced, and/or the base station receives pause state indication information sent by the user equipment, acquires the identity identifier RBID of the radio bearer leaving the pause state in the pause state indication information, and the base station carries out any one of the following operations on the channel corresponding to the related RB in a non-sequential manner: start new transmission, start retransmission, reset.

In addition, to achieve the above object, the present invention provides a communication method including: any of the above communication methods applicable to a user equipment, and any of the above communication methods applicable to a base station.

Action and Effect of the invention

The user equipment, the base station, the communication system and the communication method provided by the invention can solve the following problems:

if the UE does not need to receive data corresponding to one or more RBs corresponding to a multicast channel PDU session (multicast/broadcast PDU session) temporarily, according to the prior art, if the data of the RB is transmitted in a multicast mode (PTM mode), if there is no other UE that needs to receive the data of the RB at present, the network continues to transmit the data of the RB that has not been received temporarily, which would cause a waste of resources; if the data of the RB is transmitted in a dedicated manner (PTP manner), the network will also waste resources to continue transmitting the data of the RB because the UE does not need to receive the data of the RB at present.

In addition to the transmission from the network to the user equipment side, for the UE itself, if the UE temporarily does not need to receive data corresponding to one or more RBs corresponding to a multicast/broadcast PDU session, according to the prior art, if the RB configures L2 uplink feedback, the RLC or PDCP layer of the UE reports to the network whether the UE successfully receives the data of the RB, and if the network knows that the UE does not successfully receive a data packet of the RB, the network retransmits the data packet to the UE. However, since the UE does not need to receive the data of the RB at present, the UE continues to perform uplink feedback to the network, and the network continues to retransmit the data of the RB according to the feedback, which would cause resource waste.

The user equipment of the invention respectively indicates that the user equipment enters or leaves the pause state by sending the first indication information and the second indication information, and the side of the user equipment arbitrarily stops receiving the data of the radio bearer, stops the uplink feedback and resets or starts receiving the data of the radio bearer, starts the uplink feedback and resets according to the actual situation.

On the side of the base station, after receiving the first indication information and the second indication information, the base station correspondingly knows which radio bearers with identities enter or leave the suspended state, for entering the suspended state, the base station is required to further judge whether the radio bearers entering the suspended state are multicast channels or dedicated channels, and whether the radio bearers entering the suspended state in multicast reach a suspended number threshold value or not should be considered to decide whether to stop newly transmitting data to the user equipment, stop retransmitting, and reset. When the wireless bearing entering the pause state is a special channel, the new transmission, the retransmission and the reset are directly stopped. When the base station leaves the suspended state, the base station starts to transmit data newly, start to retransmit and reset.

By the method and the device, the utilization efficiency of network resources can be optimized to the maximum extent, the power loss of the UE is reduced, and the system performance is improved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a communication system in the present invention;

fig. 2 is a system framework diagram of the L2 layer of the communication system of the present invention;

fig. 3 is a data flow diagram of the L2 layer of the communication system of the present invention;

fig. 4 is a data structure diagram of a MAC layer in the present invention;

FIG. 5-1 is a diagram of example 1 of a MAC sub-header format according to an embodiment of the invention;

FIG. 5-2 is a diagram of an example 2 of a MAC sub-header format according to an embodiment of the invention;

FIG. 5-3 is a diagram of example 3 of a MAC sub-header format according to an embodiment of the invention;

FIGS. 5-4 are diagrams of an example 4 of a MAC sub-header format according to embodiments of the invention;

fig. 5-5 are schematic diagrams of example 5 of a MAC sub-header format according to an embodiment of the present invention;

FIGS. 5-6 are diagrams of example 6 of a MAC sub-header format according to embodiments of the invention;

FIG. 6-1 is a diagram of an example 1 of a MAC CE format according to an embodiment of the present invention;

FIG. 6-2 is a diagram of an example 2 of a MAC CE format according to an embodiment of the present invention;

fig. 6-3 is a diagram of example 3 of a MAC CE format according to an embodiment of the present invention;

FIGS. 6-4 are diagrams of example 4 of a MAC CE format according to embodiments of the present invention;

FIGS. 6-5 are schematic diagrams of example 5 of a MAC CE format according to an embodiment of the invention;

FIGS. 6-6 are schematic diagrams of example 6 of a MAC CE format according to an embodiment of the present invention;

FIG. 7 is a flowchart illustrating a user equipment entering a suspend state according to an embodiment of the present invention;

FIG. 8 is a flowchart illustrating a base station entering a suspend state according to an embodiment of the present invention;

fig. 9 is a flowchart of a base station entering a suspended state in a variation of the present invention;

fig. 10 is a schematic diagram of a session between a user equipment and a base station when entering a suspended state according to the present invention;

FIG. 11 is a diagram of an LCID assignment definition table according to an embodiment of the present invention;

FIG. 12 is a diagram of eLCID assignment definition table in accordance with one embodiment of the present invention;

FIG. 13-1 is a diagram of example 1 of MAC CE format according to the second embodiment of the present invention;

fig. 13-2 is a diagram of example 2 of a second MAC CE format according to an embodiment of the present invention;

FIG. 14 is a flowchart illustrating a second embodiment of the present invention when the UE leaves the suspend state;

FIG. 15 is a flowchart illustrating a base station entering and leaving a suspend state according to a second embodiment of the present invention;

fig. 16 is a schematic diagram of a session between a user equipment and a base station when the present invention leaves a suspended state;

fig. 17 is a diagram of LCID assignment definition table in the second embodiment of the present invention;

FIG. 18 is a diagram of eLCID assignment definition table in the second embodiment of the present invention;

figure 19 is a diagram illustrating an example of a mac ce format including a pause function indicator in a third embodiment of the present invention;

fig. 20 is a diagram of LCID assignment definition table in the third embodiment of the present invention;

FIG. 21 is a diagram of eLCID assignment definition table in the third embodiment of the present invention;

fig. 22 is a table showing correspondence between pause function indicators and MAC CE formats in the third embodiment of the present invention;

fig. 23 is a functional block diagram of the ue in the present invention.

FIG. 24 is a functional block diagram of a base station according to the present invention; and

fig. 25 is a functional block diagram of the communication system of the present invention.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by those skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

To facilitate those skilled in the art to understand technical problems, the background art is specifically described in conjunction with the multicast scenario in 5G, but is not limited by the enumerated descriptions in the description, such as the scenario descriptions of base station (gNB), PTP, PTM, etc. in 5G.

It should be understood by those skilled in the art that the user equipment, the base station, the communication system, and the communication method in the embodiments of the present application are not only applicable to the 5G mobile communication network, but also those skilled in the art can understand that the embodiments can be applied to other various communication systems besides the above 5G system, for example: global System for Mobile communications (GSM), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), general Packet Radio Service (GPRS), long Term Evolution (LTE), frequency Division Duplex (FDD), time Division Duplex (TDD), universal Mobile Telecommunications System (UMTS), worldwide Interoperability for Microwave Access (WiMAX), and so on. The above list is not intended to be a limitation on the application of the present invention to a communication system and a communication standard.

It should also be understood that in the embodiments of the present application, the user equipment UE is also referred to as a Terminal (Terminal), a Mobile Station (MS), a mobile Terminal (mobile Terminal), etc., and the user equipment UE may communicate with one or more core networks via a radio access network RAN, for example, the user equipment may be a mobile phone (or referred to as a cellular phone), a computer with a mobile Terminal, etc., and the user equipment UE may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, which exchanges language and/or data with the radio access network.

It should also be understood that, in the embodiment of the present application, the Base station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base station (NodeB) in WCDMA, an evolved node b (lte) in LET, or a Base station (gNB) in 5G in the background description, and the present application is not limited thereto, but for convenience of description, the following embodiments will use a user equipment and a Base station as examples.

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order

To facilitate those skilled in the art to understand technical problems, the background art is specifically described in conjunction with the multicast scenario in 5G, but is not limited by the illustrated exemplary description, for example, the scenario description of a base station (gNB), a core network device, an access network device, a user terminal, etc. in 5G. The above list is not intended to be a limitation on the applicability of the present invention to communication systems and communication standards.

Example one

Fig. 1 is a schematic diagram of the overall structure of the communication system in the present invention.

Fig. 1 shows a transmission network of broadcast service content from a content source 40 to a User Equipment UE10 (User Equipment), and the whole communication system 100 includes from the communication network architecture: a content source 40, a core network 30, a base station 20 and a user equipment UE10.

The content source 40: it is responsible for the production of the broadcast service content at the content provider. The core network 30 is responsible for the transmission of the broadcast service content from the content provider to the base station 20 side; the base station 20 side is responsible for transmitting the broadcast service content to the relevant user equipment 10.

In the present disclosure the user equipment 10 communicates via the base station 20 and the content source 40, the core network 30.

The content source 40 may be a public network operator (public network operator), a private data network (private data network) such as a Local Area Data Network (LADN), an intra-operator data network (intra-operator data network), or any other type of data network.

In the Uplink (UL) direction, user Plane (UP) PDUs and Control Plane (CP) PDUs are communicated from the UE to the base station 20 via a communication link. The RAN then forwards the UP PDU and the CPPDU to the core network, which then forwards the UP PDU to the content source.

In the Downlink (DL) direction, UP PDUs are delivered from the content source to the core network. The core network then forwards the UP PDU and may send the CP PDU to the RAN, and the base station then forwards the UP PDU and the CP PDU to the UE. For a given UP scenario, one or more UP functions per session may be activated and configured by the CP function.

The connections between the components of the communication network architecture may be applicable to any communication channel. For Next Generation (NG) architectures such as fifth generation (5G) mobile wireless networks.

In this embodiment, by designing and improving the UE10, the base station 20, and the communication channel between the UE10 and the base station 20, the network resource utilization efficiency is optimized, the UE power loss is reduced, and the system performance is improved.

Fig. 2 is a system framework diagram of the L2 layer of the communication system of the present invention.

The 5GNR is a global 5G standard designed based on a New air interface of OFDM, and is illustrated for a main stream L2 layer architecture of MBS in NR (New Radio, new Radio/New air interface) by fig. 2, including a media access control layer (MAC sublayer), a Radio link control layer (RLC sublayer), a packet data convergence protocol layer (PDCP sublayer) and a service data adaptation protocol layer (SDAP sublayer).

(1) MAC sublayer (Media Access Control)

The MAC sublayer provides the following services and functions: 1. mapping 2 between logical channels and transport channels, multiplexing and demultiplexing between MAC SDUs from logical channels and TBs of physical layer transport channels. 3. Through HARQ error correction 4, UE priority processing 5, logical channel priority processing 6, and patching.

The MAC may provide various types of data transmission services. Each logical channel type is defined by the type of information it carries. Logical channels are divided into two groups: control channels and traffic channels.

Wherein, the control channel (not shown in the figure) is only used for transmitting control plane information, including BCCH, downlink channel, which is used for broadcasting system control information; PCCH, downlink channel, bearing paging information; the CCCH, which transmits control information between the UE and the network, for use when the UE and the network have no RRC connection. DCCH, point-to-point bi-directional channel, transports specialized control information between the UE and the network. When the UE has an RRC connection. The traffic channel only transmits user plane information, DTCH (digital transmission control channel), point-to-point channel, and user information is specially transmitted for each UE, and both uplink and downlink are available. As shown in the figure, at least one dedicated multicast user plane information traffic channel DTCH and at least one multicast user plane information traffic channel MBTCH are present. The DTCH is a Dedicated transport Channel (Dedicated transport Channel), and the MBTCH is a multicast broadcast transport Channel (MBMS/MBS Traffic Channel).

A Network Temporary Identifier (RNTI) is used to distinguish different users in the Network. RNTIs typically employ a 16-bit identifier, where each RNTI has a specific value or range defined by the specification, depending on the type of RNTI. As shown in the figure, two types of RNTIs are provided as follows: C-RNTI and G-RNTI. The Cell RNTI (Cell RNTI, C-RNTI) is a unique identity of user equipment in a Cell. The multicast RNTI identity (GROUP RNTI, G-RNTI) is a common identity used to identify a GROUP of UEs in multicast.

A base station, e.g., a gNB, assigns different C-RNTI values to different UEs. The C-RNTI is used by the gNB to allocate UEs with uplink grants, downlink allocations, etc. The base station uses the C-RNTI to distinguish uplink transmissions (e.g., PUSCH, PUCCH) of the UE from other UEs.

(2) Concerning RLC sub-layer (Radio Link Control)

The service and function provided by the RLC layer depend on different TM, UM, AM transmission modes, and the ARQ (Automatic transmission Request) of the RLC sublayer has the following characteristics: based on the RLC status report, using a segmentation module (a Segm module and a Segm ARQ module in fig. 2), ARQ retransmits the RLC SDU or RLC SDU segments (SDU, service Data Unit); when the RLC needs, the RLC status report is trained in turn; the RLC receiver can also trigger an RLC status report after detecting a missing RLC SDU or RLC SDU segment.

(3) For PDCP sublayer (Packet Data conversion Protocol)

The PDCP sublayer can provide the following functions: transmission data (user plane/control code); maintaining PDCP SNs; performing header compression and decompression by using ROHC; encryption and decryption; integrity protection and verification; a timer based on SDU discard; load bearing and routing are distinguished; repeating; reordering and ordered delivery; out-of-order delivery; repeated discarding, etc. Only two of the main ROHC modules, security modules, are listed in fig. 2.

(4) With respect to SDAP sublayer (Service Data addition Protocol)

The SDAP sub-layer mainly completes the mapping between QoS Flows (QoS Flows) and data Radio Bearers (Radio Bearers); and marking up and down QoS Flow ID (QFI) and other functions. The L2 architecture of fig. 2 supports two types of PDU sessions, one is a multicast PDU session (multicast PDU session) and the other is a Unicast PDU session (Unicast PDU session). For the same Radio Bearer (RB), the RB may be referred to as a Multicast Radio Bearer (MRB) in the PTM, and the RB may be referred to as a Dedicated Radio Bearer (DRB) in the PTP. As shown in figure 2 of the drawings, in which, radio Bearers (Radio Bearers) are distinguished into multicast Radio bearer resources MRB and dedicated Radio bearer resources DRB.

For example, for a certain RB, if the reception quality of a certain UE through the shared multicast resource of the PTM is poor, the base station may open a PTP dedicated channel, convert the service data of the RB carried by radio bearer from the PTM to PTP to transmit to the user equipment, and the base station may schedule the UE through the dedicated physical resource in the PTP transmission mode, and switch back when the reception quality is good. The decision of the base station for switching is decided according to the number of the user equipment UE carried by the received RB and the receiving quality of the PTP/PTM mode monitored and reported by the UE.

Overall, the multicast/broadcast PDU session should support one or more QoS flows, mapping to one or more RBs, and for each RB, supporting PTM/PTP handover (PDCP interrupted PTM/PTP switching) with PDCP entity as anchor. The specific framework is as follows: the PDCP entity is connected with an RLC entity for PTM transmission and an RLC entity for PTP transmission.

The PDCP anchor point, as shown in the bold frame in the figure, has two channels, including a Multicast RLC channel (Multicast RLC leg) and a Multicast RLC channel (Unicast RLC leg), issued by the PDCP entity. Only two identical paths related to the RB are listed in the figure, and the entire architecture of the 5G system may also include other multiple PDU sessions and multiple single PDU sessions.

Wherein, the data corresponding to the PTM-RLC entity (RLC in the multicast channel) is transmitted through a PDSCH, and the PDCCH of the PDSCH is indicated to be scrambled by a multicast RNTI identifier (G-RNTI); data corresponding to a PTP-RLC entity (RLC in a dedicated broadcast channel) can be multiplexed with data of the UE belonging to other DRBs, and transmitted through a PDSCH, and the PDCCH of the PDSCH is indicated to be scrambled by a cell RNTI identifier (C-RNTI).

In the LTE of the prior art, multicast/broadcast data transmission is without uplink feedback, that is, the UE does not report to the network whether it successfully receives multicast/broadcast data, but the MBS in the NR of the 5G system introduces L2 uplink feedback, that is, the RLC or PDCP layer of the UE reports to the network whether it successfully receives multicast/broadcast data, and if the network knows that the UE does not successfully receive a certain data packet, the network retransmits the data packet to the UE.

Fig. 3 is a data flow diagram of the L2 layer of the communication system of the present invention.

For the L2 layer data stream, RB1 and RB2 (shown by hatching) are taken as an example, and the mapping relationship is as follows: RB1 corresponds to RLC PDU1, RLC PDU2 of the RLC layer, PDCP PDU1, PDCP PDU2 of the PDCP layer, SDAP PDU1, SDAP PDU2 of the SDAP layer, and two IP packets, i.e., IP Packet1, IP Packet2.RB2 corresponds to RLC PDU3 and RLC PDU4 of the RLC layer, PDCP PDU3 of the PDCP layer, SDAP PDU3 of the SDAP layer, and IP Packet, i.e., IP Packet3. The PDCP PDU3 is divided into two RLC PDUs 3 and 4. The message headers H of the respective layers are mapped as shown in fig. 3.

In the present invention, the pause state indication information can be implemented by the first indication information and the second indication information in the first embodiment and the second embodiment, and the first indication information is used to indicate entering the pause state and the second indication information is used to indicate leaving the pause state.

In addition, in the present invention, the pause state indication information may also be obtained by inserting a pause state indicator in the header of the MAC CE in the third embodiment, where the pause state indicator distinguishes and indicates by one or more bit values: the entering or leaving of the state is suspended and the incoming MACCE format is supported in a different state.

The pause state indication information is transmitted in any one of the following ways in the architecture of the communication system: physical Layer (PHY) information; radio Resource Control (RRC) layer information; or a Medium Access control element (mac ce).

In the first and second embodiments, the first indication information or the second indication information is transmitted between the ue and the base station, and the first indication information is used to indicate that the ue enters the suspend state and stops receiving data of the radio bearer. When entering a suspended state for data carried by one or more radio bearers, the user equipment sends first indication information to the base station, where the first indication information includes identification information (at least 1 RBID) of the radio bearer corresponding to the suspended state, and is used to indicate the user equipment to enter the suspended state and stop receiving the data carried by the radio bearer. When the user equipment leaves the suspend state for the data carried by one or more radio bearers, the user equipment sends second indication information to the base station, wherein the second indication information comprises the identification information (at least 1 RBID) of the radio bearer corresponding to the leave suspend state, and is used for indicating the user equipment to leave the suspend state and restart receiving the data carried by the radio bearer.

The present invention is described in an extension to the transmission of first indication information or second indication information through protocol layer control information (MAC CE).

As shown in fig. 3, the data structure of the MAC includes: a plurality of MAC SDUs and Header information connected in sequence, a plurality of protocol layer control information MAC CE and MAC Header (MAC sub Header) connected in sequence, and patch information Padding. A MAC Header (MAC sub Header) is generated and set before the MAC CE based on the MAC CE correspondence.

Fig. 4 is a data structure diagram of the MAC layer in the present invention. Fig. 4 is a separate illustration of the MAC layer in fig. 3.

Fig. 4 shows a MAC PDU (Protocol Data Unit), which is a MAC layer Protocol Data Unit, and the MAC PDU is composed of character strings arranged by byte (8 bit). When reading a plurality of character strings, the character strings are read from left to right and from top to bottom.

As shown in fig. 4, the MAC PDU is segmented into a plurality of MAC sub-PDUs, and the MAC sub-PDUs are divided into MAC PDU encapsulating MAC SDUs (MAC SDUs, responsible for service data units), MAC PDU encapsulating MAC CEs (MAC CEs, responsible for control information units), and MAC sub-PDU encapsulating padding (patch information) according to different functions. The MAC sub PDU of the service data comprises MAC SDU and matched sub header, and the sub header is provided with R/F/LCID/L field.

Since the first indication information and the second indication information belong to the category of the control information, the first indication information and the second indication information are realized by the MAC CE in the present embodiment.

In fig. 4, the MAC CE1 adopts a Fixed-length MAC CE, which is a Fixed-sized MAC CE and a subheader header of the Fixed-length MAC CE, and since the Fixed-length MAC CE and the subheader are Fixed lengths, the matched subheader has an R/LCID field, and an F field and an L field are not required.

The MAC CE2 adopts Variable length, namely Variable-sized MAC CE and the subheader of the Variable-length MAC CE, and the matched subheader has R/F/LCID/L fields because of the Variable length. In this embodiment, the variable length of the MAC CE means that at least one field of each field is variable length.

Preferably, the precedence position of the MAC CE carrying the first indication information or the second indication information in the MAC PDU is determined by the priority of the corresponding logical channel.

Fig. 5-1 to 5-6 are schematic diagrams of examples 1 to 6 of MAC sub formats in the first embodiment of the present invention.

The following fields that may be included in the MAC sub header:

LCID (Logical Channel ID, logical Channel ID field) field: for indicating the logical channel instance of the corresponding MAC SDU, or the corresponding MAC CE type, or padding (filling the gaps, with no practical significance).

An etlcid (extended Logical Channel ID) field: the logical channel instance for indicating the corresponding MAC SDU, or the corresponding MAC CE type, is an extension of the LCID field.

L (length field) field: for indicating the length of the corresponding MAC SUD or the variably sized MAC CE, in bytes.

F (Format field) field: for indicating the size of the Length field, i.e., for indicating the size of the L field. The length of the F field is 1bit. When the value is 0, the Length field in the MAC sub is 8bits; when the value is 1, it means that the Length field in the present MAC header is 16bits in Length.

And R (reserved bit) is assigned to be 0. The R field reserved field is used to zero-padding for alignment of 1Oct out of the LCID field and the F field.

In the MAC sub header of fig. 5-1 to 5-6, the LCID field is at least set, and the eLCID field is optionally set. The LCID field or the eLCID is filled with an "index value" indicating a logical channel instance corresponding to the "index value" in the LCID assignment definition table of fig. 10-11-eLCID assignment definition table, or MAC CE type distinguished by format and/or function, or padding, as described below.

As can be seen, index in LCID is 33: extended local channel ID field (Two-Octet eLCID field); index is 34: an Extended local channel ID field (one-Octet eLCID field) indicates whether an eLCID exists and the number of bytes the eLCID has.

A MAC sub-header is supported as shown in fig. 5-1, and includes octet1 and octet2, where octet1 indicates an LCID field, an F (Format field) field, and an R field. An L (length field) field is indicated at octet2, and L has 1 byte in bytes.

Wherein, the fields in the MAC sub header are aligned with octets. Oct is an abbreviation for Octet, representing a byte, with 1 byte equal to 8bits.

As in fig. 5-2, on the basis of fig. 5-1, the MAC sub header contains octet1, octet2 and octet3, and in addition to the LCID field, F field and R field of octet1, an eLCID field is also contained as indicated in octet2, and the eLCID field is always located next to the LCID field. The rest is, for example, one L field (octet 3 as shown in fig. 5-2), or a plurality of L fields (octet 3, octet4 as shown in fig. 5-4). Of course, the eLCID field is not necessary, and as shown in FIGS. 5-3, it is also the case that 2octets (octet 2, octet 3) are occupied because the L (Length field) field is longer.

Since the F field is used to indicate the size of the L field, when the L field is not present, the F field is also not present, such as the MAC sub header in fig. 5-5 and 5-6, and the octet1 and octet2 of the MAC sub header only contain the LCID field and/or the eLCID field, and the R field filled with zeros.

Summarizing the different formats of the MAC sub headers, it can be known that the formats of the MAC sub headers that can be supported are different due to different combinations of the R field, the F field, the LCID field, and the ellcid field. Generally speaking, the transport protocol standard covers as much as possible all MAC sub header combination format cases, or most common formats. Fig. 5-1 to 5-6 show only 6 combinations as examples. In the transmission of the MAC layer, a format covering all or part of the MAC sub-headers is specifically introduced into the transmission protocol standard, or one of the MAC sub-headers is generated by matching with the MAC CE according to a specific transmission requirement.

Fig. 6-1 to 6-6 are schematic diagrams of examples 1 to 6 of MAC CE formats according to an embodiment of the present invention.

For example, the identity information, the first timer, and the second timer of fig. 6-1 to 6-6, are combined to determine the MAC CE combination. Fig. 6-1 to 6-6 list only 6 of the various combination possibilities.

In this embodiment, the first indication information is used to indicate that the UE enters a suspend state, and the UE will temporarily not receive the data of the one or more RB IDs. The first indication information is implemented by the MAC CE.

The MAC CE is aligned with the MAC sub header, the length is 1octet, and 1 byte is equal to 8bits.

Since the MAC CE has the fixed-length MAC CE and the variable-length MAC CE as shown in fig. 4 and since the MAC CE has different combinations (fig. 6-1 to 6-6), the transmission protocol standard, when formulated, may support the first indication information, the second indication information, the variable-length MAC CE, or all or part of the MAC CE combinations.

In order to complete the purpose of the first indication information, the user equipment and the base station combine the actual requirements for the RBID and the timing information in the MAC CE during actual transmission, and then select a MAC CE format for transmission. The MAC CE format selected for transmission also satisfies the transmission protocol standard, i.e., either fixed length or variable length MAC CEs.

When the actual demand cannot be indicated in the fixed length maximum capacity, for example, the timing duration of the actual demand greatly exceeds the upper limit of the fixed length timer information, the timing is carried out according to the upper limit, and the first indication information and the second indication information are transmitted.

Referring to fig. 4 and fig. 6-1 to 6-6, in the process of generating and transmitting the data packets of the multiple MAC CEs, the MAC CE formats of the indicated first indication information are the same or different. For example, if the MAC CE1 in fig. 4 is generated and transmitted in the format shown in fig. 6-1, and the new RBID2 added to the MAC CE2 in fig. 4 enters the suspension state due to the change of the actual transmission condition at the next time, the MAC CE2 may be generated and transmitted in another MAC CE format (e.g., fig. 6-2, fig. 6-4, and fig. 6-6).

Fig. 6-1 to 6-6 show the formats of 6 MAC CEs that can be incorporated at the time of standard preparation or actual transmission.

As the first indication information of fig. 6-1 indicates RB ID1, the length is one octet; as shown in fig. 6-2, the first indication information indicates RB ID1 and RB ID1, which are one octet in length and arranged at octet1 and octet 2.

Fig. 6-3 to 6-6 show the combination of RB ID and timer, where the first timer and/or the second timer set up respectively are arbitrarily collocated among identities (RBIDs) of multiple radio bearers, forming different MAC CE combination types of the first indication information.

Optionally, in addition to the one or more RB IDs, the first indication information may further include a first Timer (Timer 1) for indicating a duration that the UE does not receive the data of the RB, and when the first Timer expires, the UE will resume receiving the data of the one or more RB IDs. For the first Timer (Timer 1), the protocol defines a timing unit, for example, the timing unit may be slot, SFN, FN, ns, us, ms, s, min, etc., but is not limited to the example. The first timer need only indicate the number of said timing units.

Optionally, the first indication information may further include a second Timer (Timer 2) for indicating that, if the network does not know information that the UE needs to start to re-receive the data of the RB in any manner when the second Timer expires, the network considers that the UE starts a leave session request. Optionally, the second Timer (Timer 2) may also be defined by a protocol or sent to the UE by the network through other signaling, and the format of the other signaling is not limited. Optionally, for the second timer, the protocol specifies a timing unit, for example, the timing unit may be slot, SFN, FN, ns, us, ms, s, min, etc., but is not limited to the examples. The second timer need only indicate the number of said timing units. Generally, the duration of the second Timer is greater than the duration of the first Timer, i.e. Timer2 > Timer1.

Fig. 6-3 show the MAC CE format of RB ID1 in conjunction with a first Timer (Timer 1), timer1 occupying Oct2-Oct n varies depending on the specific set length of time. N > =2 in fig. 6-3.

Fig. 6-4 show RB ID1 and RB ID2, where multiple RB IDs are combined with the MAC CE format of the same type of Timer (Timer 1 or Timer 2), fig. 6-4 exemplifies the first Timer (Timer 1), RB ID2 and adjacent RB ID1 are set at Oct2, oct1, and Timer1 occupies Oct3-Oct unequal according to the specific set time length. The length of time set by the first Timer (Timer 1) applies to RB ID1 and RB ID2. N > =3 in fig. 6-4.

Fig. 6-5 show the case of RB ID1, a single RB ID in combination with MAC CE formats of two types (Timer 1 and Timer 2) of timers, and fig. 6-5 take the first Timer (Timer 1) and the second Timer (Timer 2) as examples, and Timer2 is set immediately after Timer1 and is set after RB ID. Since Timer2 > Timer1, the time length set by the first Timer (Timer 1) and the time length set by the second Timer (Timer 2) are respectively applied to the one RB ID1. Due to different applicable conditions of the timers, if the first Timer is overtime, the UE will restart receiving, and if the second Timer is overtime, the UE is not known to start to consider a leave session, and the Timer1 and the Timer2 can be triggered independently and respectively for the same RB ID, so that the durations of the Timer1 and the Timer2 can be set respectively on the premise that the Timer2 is greater than the Timer1. In fig. 6-5, n and m are values, n > =2, m > = n +1.

Fig. 6-6 shows RB ID1 and RB ID2, and the MAC CE format of a Timer with multiple RB IDs combined with two types (Timer 1 and Timer 2), because Timer1 and Timer2 can be set independently, specific durations of Timer1 and Timer2 with different settings may also be configured for different RB IDs, as shown in fig. 6-6, timer 1-1, timer 2-1 correspond to RB ID1, and Timer 1-2, timer 2-2 correspond to RB ID2. The values of n, m, j, and k in fig. 6 to 6, n > =2, m > = n +1, j >, m, k > = j +1.

Of course, RB ID1 and RB ID2 may also match the same specific time duration of Timer1 and Timer2, that is, RB ID1 and RB ID2 match Timer1 and Timer2, which is simpler than the cases in fig. 6-6. The identities (RBIDs) of the plurality of radio bearers are respectively collocated with the first timer and/or the second timer which are independently set up.

It should be understood by those skilled in the art that the foregoing is a preferred six-format MAC CE, but the present invention considers that the MAC CE may include any combination of RB ID, timer1 (first Timer), and Timer2 (second Timer), and the length of the field (bit number) is not limited. For the specific format of the first indication information, there are various modifications of the combination method, the number of combinations, the arrangement order, the arrangement position, whether the RBID field and the corresponding timer field are adjacent or arranged at intervals in the MAC CE format of the RBID field and the timer field.

In this case, in order to realize transmission of the first indication information or the following second indication information, the MAC CE (for example, fig. 6-1 to 6-6) and the MAC CE sub header (for example, fig. 5-1 to 5-6) have such an association relationship:

the MAC CE format of the first indication information or the second indication information described below has a different MAC CE combination type, a free combination of the RBID indicating the suspended state and the timer. In all possible combinations, the communication transmission standard, when introduced, may cover all or only part of it. The MAC CE combination type and number are determined by the preset communication protocol requirements.

And between the user equipment and the external equipment, selecting one of the MAC CE combination types according to the current actual transmission condition to transmit, wherein the current actual transmission condition is determined by the number of the RBs of the radio bearer in the suspension state, the existence or nonexistence of the timers, the types of the included timers, the timing duration and the like. It can be understood that which format the MAC CE specifically adopts is selected by the current actual transmission conditions.

Fig. 11-LCID assignment definition table, fig. 12-eLCID assignment definition table. The LCID value or the eLCID value in the MAC sub header refers to the index of the LCID table or the eLCID table to know the functional content corresponding to the index, for example, the index of the LCID is, for example, 50, and then 50 is filled in the LCID field in the MAC sub header, which represents that the type of the MAC CE matching the MAC sub header is "BFR". For example, if the index of the eLCID is 309, 309 is filled in the eLCID field in the MAC sub-header, which represents that the type of the MAC CE matched with the MAC sub-header is "Serving Cell Set Based SRS Spatial relationship Indication".

In addition to the first indication information and the second indication information, the introduction index and the function are added, and the LCID table, the existing index and the function definition in the eLCID table are determined by referring to the LCID table and the eLCID table in the communication transmission standard protocol (for example, 3GPP TS 38.321).

Generally, for the communication transmission standard protocol, all MAC CE formats are supported in the LCID table or the elicid table as much as possible (in this embodiment, if the standard introduces 10MAC CE combinations, 10MAC CE formats are supported), a preset LCID table or an elicid table is formed, and an index 10 entry is added to the communication transmission standard protocol. A new LCID or eLCID is introduced for all MAC CE formats (e.g. 10) to be supported.

It should be noted that there is a one-to-one relationship between all MAC CE formats (e.g. 10) supported by the communication transport standard protocol and the introduction of a new LCID or eLCID, (number of items of new index). It may be that, in order to support 10MAC CE formats, 10 new indexes are introduced.

The communication transmission standard protocol supports 10MAC CE formats, but in actual transmission, one or more of the MAC CE combination types are selected to be transmitted according to the current actual transmission conditions in the transmission of the user equipment. The current actual transmission condition is determined by the number of RBs of the radio bearer in the suspended state, the existence of the timer, the type of the included timer, the timing duration, and the like. It is understood that which format or formats the MAC CE specifically uses is selected according to the current actual transmission conditions.

Fig. 11 and 12 show 3 MAC CE formats supported by the communication transmission standard protocol, and fig. 11 and 12 show one of the supported MAC CE formats in the LCID table or the eLCID table during transmission, which is selected according to the current actual transmission condition to transmit, and transmit the first indication information 1-1 or the first indication information 1-2 or the first indication information 1-3.

First indication information 1-1, first indication information 1-2, and first indication information 1-3 are newly added to fig. 11 and 12, respectively. The first indication information 1-1 corresponds to, for example, the MAC CE format of fig. 6-1, the first indication information 1-2 corresponds to, for example, the MAC CE format of fig. 6-4, and the first indication information 1-3 corresponds to, for example, the MAC CE format of fig. 6-6. Since the RBID of the MAC CE format itself and the length of the octets are different depending on the format of the timer, fig. 6-1 is one octet, fig. 6-4 is four octets (i.e., n =4 in fig. 6-4), fig. 6-6 is ten octets (i.e., n =4, m =6, j =8, k =10 in fig. 6-6), and then the first indication information 1-1 of index64 in fig. 10 and 11 is specifically "MBS recovery deactivation (one octet)", the first indication information 1-2 of index65 is specifically "MBS recovery deactivation (four octet)", and the first indication information 1-3 of index66 is specifically "MBS recovery deactivation (ten octet)".

The above is transmitted by using the LCID table, and if the first indication information and the second indication information are transmitted by using the eLCID table. Similarly, the first indication information 1-1 to the first indication information 1-3 in the etlcid table have the same association relationship, and in short, as shown in fig. 11, when the data is actually transmitted, one of the eLDIC fields index320, index321, and index322 is used.

Fig. 7 is a flowchart illustrating a ue entering a suspended state according to an embodiment of the present invention.

When the UE determines that it is not required to receive data corresponding to one or more RBs corresponding to a multicast/broadcast PDU session temporarily, that is, the UE needs to continue to receive the data after a period of time, and the stop receiving for the period of time is not enough to enable the UE to start a leave session (leave session) procedure, which is the scope of the suspension state described in the present invention.

Wherein pause state scenario scenarios include, but are not limited to: since the user temporarily leaves the user device to go to other places, under the operation of the user, one or more APP play pause keys in the application layer of the user device are pressed. Or for another application, where one application is suspended, this suspended state is temporary, not being executed temporarily. When the user returns, the pause state is left, and the pause key of the application is released; or the application is reapplied by the user, the suspended state is released, and the application is woken up or activated. The invention also encompasses other scenarios where a suspended state can be implemented, and is not limited herein.

step-a0, the UE enters a pause state for data carried by one or more RBs, for example, a play pause key is pressed, the UE enters a pause state, and the UE may perform any combination of the following steps (1) to (4), and the sequence between the operations is not limited:

(1) step-a1: and (3) sending an indication message:

the UE sends first indication information to a network (which can be a base station); when one or more radio bearers in the user equipment enter a suspended state, first indication information is sent to a base station serving as external equipment, wherein the first indication information contains an identity of the radio bearer entering the suspended state and is used for indicating the user equipment to enter the suspended state by taking the radio bearer as granularity and stop receiving data of the radio bearer.

(2) step-a2: stopping the receiving operation: the UE no longer receives data for the RB.

(3) step-a3: stopping the feedback operation: for an RB, if the RB configures uplink feedback, no uplink feedback is generated any more, and no uplink feedback is sent to the network any more, where the uplink feedback includes but is not limited to: PDCP status report (PDCP state report), RLC status report (RLC state report), RLC ARQ feedback (RLC ACK/RLC NACK).

(4) step-a4: reset operation: for the internal reset, optionally, resetting is performed on the RLC entity and/or the PDCP entity corresponding to the RB. The reset operation includes at least: and clearing the buffer of the RLC entity or the PDCP entity, and resetting the SN of the RLC entity or the PDCP entity to 0.

The following principle is the same as that for clearing the buffer in Reset operation and resetting SN (Series Number) to 0, and the description of the same is omitted.

At least one of the operations can be selected to be executed, and the operation time points of the operations are not limited by the sequence.

Fig. 8 is a flowchart illustrating a base station entering a suspend state according to an embodiment of the invention.

The above-mentioned handling of entering the suspended state at the user equipment side is to enter the suspended state with RB as granularity, and no matter whether the RB entering the "suspended state" of the user equipment is MRB or DRB, the user equipment does not distinguish between MRB and DRB, and executes the processing of sending the first indication information, not receiving, not feeding back, or resetting entering the suspended state in fig. 7.

It should be noted that, although the above-mentioned suspend state entry at the base station side is also performed with RB as granularity, the base station needs to further distinguish whether the RB is MRB (multicast radio bearer) or DRB (unicast radio bearer), as shown in fig. 2, MRB1, MRB2, DRB1, DRB2, and thus, the procedure of entering the suspend state includes the following steps

Step-b1: the base station receives first indication information sent by the user equipment and enters Step-b2;

step-b2: acquiring the identity RBID of the radio bearer entering a suspended state in the first indication information, and entering Step-b3;

step-b3: judging whether the RB corresponding to the RBID carries out data transmission in a unicast mode, and entering Step-b4 when the RB passes the unicast mode; when the multicast mode is passed, entering Step-b5;

step-b4: when in the unicast mode, at least one of the following is executed on the unicast channel of the RB without the sequence order: stopping newly transmitting (Step-b 41), stopping retransmitting (Step-b 42) and resetting (Step-b 43);

step-b5: when the multicast mode is used, whether the radio bearer entering the pause state of Step-b6 in the multicast reaches the pause number threshold value of 100% is further judged. In Step-b6 of this first embodiment, the pause number threshold is set to 100%. The 100% means that the threshold number of RBIDs in the multicast-stopped group that place the pause request is high, it can be understood that the multicast will be stopped only if all users need to stop the broadcast.

Step-b6: when the pause number threshold value is 100%, all users in the group need to stop broadcasting, and any one of the following is executed in the RB multicast channel in no sequence: stopping newly transmitting (Step-b 61), stopping retransmitting (Step-b 62) and resetting (Step-b 63);

step-b7: when the pause number threshold value is not reached to 100%, the RB multicast channel is not influenced.

As shown in fig. 2, the network uses a unique network temporary identifier RNTI to distinguish between different user equipments, which are marked as multicast network temporary identifier G-RNTI and multicast network temporary identifier C-RNTI,

in downlink transmission sent by the base station, the base station can know that a communication channel of the RBID is a multicast channel or a unicast channel through the communication channel in which the identity identification RBID of the radio bearer of the first indication information or the second indication information is positioned, so that the RB corresponding to the RBID is judged to be a unicast bearer or a multicast bearer.

Because, there are three structures for the structure of the data link: multicast links, unicast links, and combined links that combine multicast and unicast. From the data flow delivery, there are two cases: a multicast data stream possibly through a multicast link or a combined multicast-side link, and a unicast data stream possibly through a unicast link or a combined unicast-side link. Due to the above interaction, it is determined that the data carried by the RB corresponding to the RBID is transmitted through a unicast channel or a multicast channel, and the determination is performed in such a manner that: the user equipment can know that the data carried by the RB is transmitted by a multicast channel or a unicast channel through the identity RBID.

The multiple identity RBIDs may be previously classified into MRBs (MBMS/MBS radio bearers) or DRBs (Data radio bearers) and stored, so as to form a multicast-unicast partition table corresponding to the identity RBIDs. Therefore, for both sides of the base station and the user equipment, the distinction can be realized through the identity identification RBID.

After the base station receives the first indication message, the base station may perform any combination of the operations of stopping new transmission, stopping retransmission, and resetting, and the sequence of the operations is not limited. The three operations are illustrated below:

(1) Stopping new transmission operation

And for the RB indicated in the first indication information, no more data of the RB is newly transmitted to the UE.

(2) Stopping retransmission operations

For the RB indicated in the first indication information, no more data of the RB is retransmitted to the UE.

(3) Reset operation:

optionally, reset is performed on the RLC entity and/or the PDCP entity corresponding to the RB. The reset operation includes at least: and clearing the buffer of the RLC entity or the PDCP entity, and resetting the SN of the RLC entity or the PDCP entity to 0.

Fig. 9 is a flowchart of a base station entering a suspended state in a modification of the present invention.

In FIG. 9, step-b1 is identical to Step-b4 in addition to FIG. 8, and the illustration in FIG. 9 is omitted. The difference between the present modification is that the pause number threshold is set to 100% in the first embodiment, and 80% in the modification. Thus, starting from Step-b5, the following steps are included:

step-b5, the RB performs data transmission in a multicast mode, and the Step enters Step-b6;

step-b6: judging whether a pause data volume threshold value is reached, wherein the pause data volume threshold value is 80%, and entering a Step-b8 when 80%, for example, 90%, of the pause data volume threshold value is required to enter a pause state; when the time does not reach 80%, the number of pauses is not enough, and therefore, the Step-b7' is entered;

step-b7', the multicast is not influenced, and the data transmission of the group channel of the RB is kept;

step-b8: since most users, for example, 90% need to enter the pause state, the multicast is paused, and the RB in the multicast needs to be distinguished, one is the RB in the multicast that needs to enter the pause state, and enters Step-b91, step-b92 or Step-b93, and the other is the remaining RB, that is, the RB in the multicast that does not need to enter the pause state, enters Step-b10;

in the multicast, the RB which needs to enter the suspended state executes any one of the following actions without any sequence: stopping newly transmitting (Step-b 91), stopping retransmitting (Step-b 92) and resetting (Step-b 93);

step-b10: and (4) the RB is left in the multicast, the RB does not need to enter a pause state, and the network switches the RB from the multicast mode to the unicast mode for data transmission.

In this modification, when the pause number threshold is lower than 100% (for example, 80%) there may be remaining UEs that need to receive the data corresponding to the RB, and then the base station may reestablish unicast channels for these UEs, and respectively send the data corresponding to the RB to them in a unicast manner. The switching from the multicast mode to the unicast mode in Step-b10 can be realized by any one of the prior art.

Fig. 10 is a schematic diagram of a session between a user equipment and a base station when entering a suspended state in the present invention.

As shown in fig. 10, a session flow between the user equipment and the base station is given, fig. 10 takes a single DRB as an example, and describes a scenario in which the user equipment and the base station respectively enter a suspended state with a single DRB granularity, where fig. 10 does not relate to the case of MRB.

In the operation of steps 12-15, the user equipment at least executes any one of the steps, and the executed time12-time15 are not in sequence. The user equipment enters the pause state as a precondition.

On the premise that the base station side needs to receive the first indication information, in the operation of step22-step24, the user equipment at least executes any one of the first indication information and the executed time22-time24 are not in sequence.

FIG. 10 is not shown, but of course, the present invention is also applicable to a scenario adaptation with multiple DRBs, multiple MRBs with pause state entry for granularity, such as DRB1 (paused): radio; DRB2 (normal state): voice call. The number of pauses threshold is only involved by the MRB, and the number of pauses thresholds for the MRBs may be configured uniformly or independently.

The DRBs are respectively determined by the ue, and when multiple MRBs are involved, for example, the session feedback processing at the base station side in fig. 9 is not as shown in fig. 9, and the base station receives the first indication information of the MRBs, and then whether step22-step24 is to be executed or not, needs to perform overall determination according to the base station entering the suspended state in fig. 8, in short, the RB is a unicast bearer or a multicast bearer, and it is necessary to comprehensively consider by the base station whether the radio bearer entering the suspended state in the multicast reaches the threshold of the suspended number, and perform corresponding new transmission stop, retransmission stop, and reset processing, or the base station side is not affected.

It is understood that the specific session flow between the user equipment side and the base station side entering or leaving the "suspended state" is not limited by the specific interaction scenario in fig. 10 and fig. 16, but it is to be considered that the first indication information and the second indication information sent by the user equipment, and the RB that is entered or leaves the "suspended state" is a unicast bearer or a multicast bearer, and whether the suspended number threshold is reached or not form different interaction session flows, that is, the specific steps of entering or leaving the "suspended state" between the user equipment side and the base station side in fig. 7 and 8 and fig. 14 and 15 can be freely combined, and the freely combined steps of forming different interaction session flows are within the protection scope of the present invention.

FIG. 11 is a table diagram of LCID assignment definition; fig. 12 is a diagram of the etlcid assignment definition table.

Usually we introduce how many formats of the MAC CE (3) in total, and how many new LCIDs (3) need to be introduced. Fig. 11 and fig. 12 are respectively added with first indication information 1-1 (fig. 6-1), first indication information 1-2 (fig. 6-4), and first indication information 1-3 (fig. 6-6), and introduce a new LCID value, or an elicid value, into the LCID, or the elicid, of the MAC sub-header for the MAC CE.

If a new LCID is introduced, the MAC sub header format introduced only includes an LCID field, and does not include an elicid field.

The MAC sub Header (MAC sub Header) is correspondingly generated with the MAC CE in a matching way, and comprises the following steps: a logical channel ID field (LCID) field, or an optionally configured further extended logical channel ID field (eLCID) field. If a new eLCID is introduced, an LCID field and an eLCID field are simultaneously contained in the introduced MAC sub header format; if the MAC CE only contains an RB ID field or the length of the MAC CE is fixed, the introduced MAC sub header format does not contain L and F fields; otherwise, the introduced MAC sub header format includes L and F fields.

To cite such an example, in fig. 5, for example, MACCE1 corresponds to the LCID assignment definition table index56: MACCE2 corresponds to the LCID assignment definition table index57.

In general, in the industry of the art, the indices of the first and second indication information are sorted in order of priority of importance in function, and therefore, the indices of the first and second indication information are also the last indices of the LCID and eLCID tables. index number, priority of function the present invention is not limited.

As to how LCID or etlcid table is selected, the following is explained:

index33 in LCID: extended local channel ID field (Two-Octet eLCID field); index34: an Extended local channel ID field (one-Octet eLCID field) indicates whether eLCID exists. Then, when LCID of MAC CE sub header is 33, it indicates that eLCID exists and the eLCID has Two-Octet eLCID field; when LCID of MAC CE sub header is 34, it shows that eLCID exists and the eLCID has one-Octet eLCID field; when the first indication message is carried by the LDIC, the first indication message is only related to the LDIC table by adding an item in the LDIC table and is not influenced by the index33 and the index 34; when the first indication message is carried by the eLDIC, by adding an entry in the eLDIC table, the LDIC location is assigned to the LDIC, for example, 33, 34 in the LDIC table, and the first indication information and the second indication information are represented by adding an entry in the LDIC table under the condition that the LDIC is set to 33 or 34.

Usually, the first indication message and the second indication message are selected from LDIC and eLDIC, and indicated by LDIC or LDIC.

In this embodiment, an uplink LCID table and an uplink etlcid table are used.

Example two

The first embodiment is to enter the suspend state of the ue and the base station, and the second embodiment is to explain the leaving suspend state of the ue and the base station on the basis of the first embodiment.

It should be noted that, the premise that the ue and the base station leave the suspend state in the second embodiment is not only the first embodiment, but the first embodiment is only one of the premise of the second embodiment, and the first embodiment and the second embodiment may be separately and independently implemented.

In the second embodiment, the premise that the ue determines to leave the suspend state includes: the base station and the user equipment are both in a suspended state consistently, and the premise is implemented, including but not limited to: the processing performed by the user equipment in the first embodiment when entering the suspend state using the first indication information; or entering a suspended state identified by the communication state of the base station and the ue, for example, by presetting a threshold value of consecutive error packets between the ue and the base station, and when the threshold value of consecutive error packets is reached, the network identifies the state as that both the base station and the ue are in the suspended state.

Fig. 13-1 and 13-2 are schematic diagrams of example 1 and example 2 of the second MAC CE format according to the embodiment of the present invention.

And when one or more radio bearers in the user equipment leave the suspended state, sending second indication information to the base station serving as the external equipment, wherein the second indication information is used for indicating the radio bearers to leave the suspended state and restart to receive data of the radio bearers. The second indication information may also be transmitted through a PHY/RRC message or a MAC CE.

Since the second indication information is different from the combined format of the RBID and the timer of the first indication information MAC CE in the first embodiment, since neither the ue nor the base station is implemented in a manner that the timer is not used when leaving the "suspended state", the format of the MAC CE only includes, for the second indication information: an identity of one or more suspended state Radio Bearers (RBIDs). The format of the MAC CE of the second indication information is as shown in fig. 13-1 and 13-2, and does not involve a timer.

The format of the MAC header matching the MAC CE in the second embodiment is the same as that in the first embodiment.

In the second example, the principle and the embodiment of passing the second indication information through the MAC CE, the MAC header, and configuring the index for the introduced MAC CE in the LDIC and the eLDIC are the same. In short, optionally, the second indication information may be transmitted through a MAC CE, and a new LCID or eLCID is introduced into the MAC CE, where the LCID or eLCID may be a field in a sub header corresponding to the MAC CE, and is used to indicate that the MAC CE is used to indicate that the UE is to restart receiving a certain RB/RBs corresponding to data.

Fig. 14 is a flowchart illustrating that the ue leaves the suspend state in the second embodiment of the present invention.

The precondition that the user equipment judges that the user equipment leaves the pause state comprises the following steps: the base station and the user equipment are both in a suspended state consistently, and the premise is implemented, including but not limited to: the first embodiment described above; or, presetting a continuous packet error threshold value.

step-c0: as shown in fig. 14, when the user equipment leaves the pause state for data carried by one or more RBs, for example, the play pause key is released, and the user plays back the user equipment, the UE may perform any combination of the following steps (1) to (4) when the user equipment leaves the pause state, and the sequence between the operations is not limited:

(1) step-c1: sending a second indication message operation: the UE sends second indication information to a network (which can be a base station), wherein the second indication information comprises the following fields: at least one or more RB IDs are included for indicating that the UE will temporarily not receive data for the RB.

(2) step-c2: and starting a receiving operation, and starting to receive the data of the RB by the UE.

(3) step-c3: starting uplink feedback, wherein the uplink feedback includes but is not limited to: PDCP status report (PDCP state report), RLC status report (RLC state report) state report, and RLC ARQ feedback;

(4) step-c4: the reset operation includes at least: and clearing the buffer of the RLC entity or the PDCP entity, and resetting the receiving Start Number (SN) of the RLC entity or the PDCP entity to 0.

Fig. 15 is a flowchart illustrating a base station entering and leaving a suspend state according to a second embodiment of the present invention.

step-d1: the base station receives second indication information sent by the user equipment;

step-d2: acquiring the identity identifier (RBID) of the radio bearer leaving the suspended state in the second indication information, the base station may perform any combination of the following steps (1) - (3), and the sequence between the operations is not limited:

(1) step-d 31: starting a new transmission operation, and starting new transmission of data of the RB to the UE by the base station for the RB indicated in the second indication information;

(2) step-d32: starting retransmission operation, and for the RB indicated in the second indication information, the base station starts to retransmit the data of the RB to the UE according to the uplink feedback;

(3) step-d33: and (4) resetting, optionally, the base station resets the RLC entity and/or the PDCP entity corresponding to the RB (if not Reset before). The reset operation includes at least: and clearing the buffer of the RLC entity or the PDCP entity, and resetting the SN of the RLC entity or the PDCP entity to 0.

Fig. 16 is a schematic diagram of a session between a user equipment and a base station when the present invention leaves a suspended state.

Corresponding to the above description of fig. 10, fig. 16 is a session scenario when the ue and the base station leave the suspend state with a single DRB as granularity, but the present invention is also applicable to a scenario where the suspend state leaves with a plurality of DRBs and a plurality of MRBs as granularity.

It is understood that the specific session flow between the ue side and the bs side entering or leaving the "suspended state" is not limited to the specific interaction scenario in fig. 10 and fig. 16, and can be freely combined by the specific steps of entering or leaving the "suspended state" between the ue side and the bs side in fig. 7 and 8 and fig. 14 and 15, and the freely combined different interaction session flows are within the scope of the present invention.

Fig. 17 and 18 are an LCID assignment definition table and an eLCID assignment definition table in the second embodiment of the present invention;

the second embodiment is the same principle of how many MACCEs are introduced for the first indication information in the first embodiment, and then new LCIDs are introduced for the MAC CEs, or the elicids are the same principle, the same repeated explanation of the intrinsic association relationship among the MACCEs, the macsubheaders, the LCID tables, and the elicid tables in the first embodiment is omitted,

since the MAC CE format is different due to different combinations of the RBIDs, the type and number of MAC CE combinations of the second indication information are determined by the preset communication protocol requirement (e.g. protocol version number 3gpp TS 38.321). Fig. 17 and fig. 18 show that 1MAC CE format is selected from the LCID table or the elicid table during transmission and transmission when supported by the preset communication protocol requirement, and the second indication information is added, if the LCID table is used, an index64 is added, for example, corresponding to the MAC CE format in fig. 13-1. If eLCID table is used, index256 is added, for example, corresponding to the MAC CE format of FIG. 13-1. The second indication information is specifically "MBS reception reactivation".

EXAMPLE III

In a third embodiment, another specific implementation manner for implementing the suspension state indication information is provided, where the ue and the base station perform distinguishing indication by using the bit value of the suspension state indication information through the suspension state indication information, and indicate entering the suspension state, leaving the suspension state, and the corresponding MAC CE format.

When the user equipment enters or leaves the pause state for the data carried by one or more radio bearers, the pause state indication information is sent to a base station as external equipment, and the pause state indication information contains the identification information of the radio bearer corresponding to the entering or leaving pause state and is used for indicating the user equipment to enter or leave the pause state and stop receiving the data carried by the radio bearer.

In short, the difference is that the indication is implemented by using two pieces of information in the first and second embodiments, and the indication is implemented by using one piece of information in the third embodiment.

Figure 19 is a diagram illustrating an example of a mac ce format including a pause function indicator in a third embodiment of the present invention;

the pause state indication information comprises at least a pause function indicator, a need to enter or leave a pause state RBID.

In the third embodiment, the pause state indication information is obtained by adding a pause function indicator to the header of any one of the mac ce formats in fig. 6-1-6 when indicating entering the pause state, and adding a pause function indicator to the header of any one of the mac ce formats in fig. 13-1-13-2 when indicating leaving the pause state, where the pause function indicator is located at Oct1 and occupies one bit or multiple bits. When the remaining bits within 1Oct or more Oct of the pause function indicator are filled in by the R field.

Upon entry, the pause state indication information may be a combination of pause function indicator, entering or leaving pause state RBID, or any combination of pause function indicator, entering or leaving pause state RBID, and timer.

Upon exit, the pause state indication information does not require a timer, and may be a combination of pause function indicator, need to enter or exit the pause state RBID.

Fig. 19 shows a specific example in which the number of bits of the pause function indicator (MBS relocation control Flag) is 4bits, and the remaining R field is filled. RBID1 is combined with timer1 and tm 2. In the third embodiment, the most sequence of diagrams of other various combinations is omitted.

Fig. 20 and 21 are assignment definition tables of LCID and eLCID in the third embodiment of the present invention.

A pause function indicator (MBS relocation control Flag) is newly added to the LCID, eLCID assignments to introduce a new number, and function. MBS Reception control Flag includes indication in two directions, therefore, in fig. 20, LCID number is set to 64, specifically "MBS Reception control (deactivation/reactivation)" is adopted, and of course, pause state indication information may also be introduced from the elicid table, and in fig. 21, elicid number is set to 320, specifically "MBS Reception control (deactivation/reactivation)" is adopted.

Fig. 22 is a table showing correspondence between pause function indicators and MAC CE formats in the third embodiment of the present invention;

in the third embodiment, the association relationship between the suspension state indication information, the MAC CE and the MAC CE sub header in the first and second embodiments is similar. The MAC CE format of the pause state indication information has all possible combinations of different MAC CEs, the communication transmission standard can be completely covered or only partially covered when being introduced, and one of the MAC CE combination types is selected to be transmitted according to the current actual transmission condition.

In fig. 22, when the communication transmission standard is customized or the number of types that need to support all MAC CEs (for example, 10 types, 1 st MAC CE format-10 th MAC CE format, need to be supported in fig. 22) is distinguished, entering/leaving the pause deactivation state is distinguished to determine the length (4 bits) of the pause function indicator (MBS Reception control Flag), where 4bits may indicate 16 types, and the remaining 6 types are reserved. Distinguishing different states, and entering an optional timer for combination; leaving does not require a timer.

When generating the MAC CE during actual transmission, one of the MAC CE combination types is selected according to the actual transmission conditions for transmission, and in view of the MAC CE format of fig. 9, the pause function indicator is filled with "0100" in comparison with the correspondence table of fig. 22, thereby generating pause state indication information. The matching generates a MAC sub-header, which has the same format as in the second embodiment (see fig. 5-1 to fig. 5-6), and the LCID field and the eLCID field in the MAC sub-header may be added by LCID or by eLCID. The LCID is filled 64 for MBS reception control (deactivation/reactivation) and eLCID is filled 320 for MBS reception control (deactivation/reactivation).

During decoding, after it is known that MBS reception control (deactivation/reactivation) exists through the LCID field or the elic field and the LCID table or the elic table, the bit value "0100" of the pause function indicator is combined to know that the format of "0100" and the corresponding MACCE is the format as shown in fig. 9 through the corresponding relationship table in fig. 22, the number of occurrences and the field length corresponding to the format of MACCE are known, and the format of MACCE is determined, so that correct decoding is achieved.

In addition, in the third embodiment, the overall flow and the corresponding overall and step descriptions of the user equipment and the base station entering the suspended state and leaving the suspended state in fig. 7 to 10 and 14 to 16 of the first and second embodiments, and the session between the user equipment and the base station are the same, and only the first indication information and the second indication information in the first and second embodiments are replaced by the suspended state indication information in the present embodiment, and in the third embodiment, the same description contents as above are avoided.

Fig. 23 is a functional block diagram of the user equipment in the present invention.

As shown in fig. 23, the present invention further provides a ue, which corresponds to the ue in all the above embodiments, and the ue includes: a control part, an application layer part, a PDCP part, an RLC part, a MAC part, and a communication part, a storage part, wherein,

the control section controls the MAC section to generate the suspend state indication information and controls the communication section to transmit the suspend state indication information when the application layer section receives an instruction to enter the suspend state or when the user equipment is determined to enter the suspend state, or controls the MAC section to generate the suspend state indication information and controls the communication section to transmit the suspend state indication information when the application layer section receives an instruction to leave the suspend state or when the user equipment is determined to leave the suspend state. The pause state indication information is the case of any one of the first embodiment, the second embodiment, the third embodiment, and the modified examples.

Entering a suspended state, the control unit controls the communication unit to stop receiving data, controls the PDCP unit and the RLC unit not to perform uplink feedback, resets the storage unit, the PDCP unit and the RLC unit, or leaves the suspended state, controls the communication unit to start receiving data, controls the PDCP unit and the RLC unit to start uplink feedback, and resets the storage unit, the PDCP unit and the RLC unit.

Fig. 24 is a functional block diagram of a base station according to the present invention.

As shown in fig. 24, the present invention further provides a base station, corresponding to the base station in all the above embodiments, the base station includes: the device includes a control unit, a communication unit, a storage unit, and a determination unit.

The base station receives pause state indication information sent by the user equipment through the communication part, the storage part stores the pause state indication information, and the pause state indication information acquires the identity RBID of the radio bearer entering the pause state.

The control unit controls the determination unit to determine whether the RB corresponding to the RBID is a unicast bearer or a multicast bearer.

When the load is carried through the unicast, performing any at least one of the following on the RB dedicated broadcast channel in a non-sequential order: stopping newly transmitting, stopping retransmitting and resetting, when the multicast load is carried, the control part further controls the judging part to judge whether the wireless load entering the pause state in the multicast reaches the pause quantity threshold value, and when the wireless load reaches the pause quantity threshold value, the control part controls the communication part to execute any one of the following to the RB multicast channel in no sequence: stopping newly transmitting, stopping retransmitting and resetting, when not reaching, the RB multicast channel is not influenced, and/or

The base station receives pause state indication information sent by the user equipment through the communication part, the storage part stores the pause state indication information, and obtains the identity identifier RBID of the radio bearer leaving the pause state in the pause state indication information, and the control part controls the communication part to carry out any one of the following operations on the related RB channels in a non-sequential manner: start new transmission, start retransmission, reset.

The pause state indication information is the case of any one of the first embodiment, the second embodiment, the third embodiment, and the modified examples.

Fig. 25 is a functional block diagram of the communication system of the present invention.

In addition, the present embodiment further provides a communication system, including: the at least one user equipment (e.g., of fig. 23) is communicatively coupled to the at least one base station (e.g., of fig. 24).

In addition, the present embodiment further provides a communication method, which is applicable to a user equipment side, and at least includes the following steps:

when the user equipment enters or leaves the pause state for the data carried by one or more radio bearers, sending pause state indication information to a base station as external equipment, wherein the pause state indication information comprises identification information of the radio bearer corresponding to the entering or leaving pause state, and the pause state indication information is used for indicating the user equipment to enter the pause state and stop receiving the data carried by the radio bearer.

In addition, the present embodiment further includes a communication method, adapted to a base station side, including:

the base station receives pause state indication information sent by the user equipment, acquires the identifier RBID of the radio bearer entering the pause state in the pause state indication information, judges that the data borne by the RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel,

when data transmission is carried out through the unicast channel, executing any one of the following unicast channels corresponding to the RB without sequence: stopping new transmission, stopping retransmission and resetting, further judging whether the RB reaches a pause quantity threshold value when data transmission is carried out through a multicast channel, and when the RB reaches the pause quantity threshold value, sequentially executing any one of the following multicast channels corresponding to the Rb without any sequence: stopping retransmission, stopping retransmission and resetting, when not reaching, the multicast channel corresponding to RB Su is not influenced, and/or

The base station receives suspension state indication information sent by user equipment, acquires an identity (RBID) of a radio bearer leaving the suspension state in the suspension state indication information, and carries out any at least one of the following operations on channels corresponding to related RBs in a non-sequential manner: start new transmission, start retransmission, reset.

In addition, the present embodiment further includes a communication method, which is characterized by including: any of the above communication methods applicable to a user equipment, and any of the above communication methods applicable to a base station.

The communication method provided by the present invention is applicable to a communication method of a user equipment, and the communication method applicable to a base station can be correspondingly obtained from the above description of the embodiments of the base station, the user equipment, and the communication system, respectively.

It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program, which may be stored in a computer-readable storage medium, and when executed, may include processes of the embodiments of the methods.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that combinations of various embodiments and steps have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electrical, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, each functional unit in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk, and the like.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (24)

1. A user device, comprising:

when the user equipment enters or leaves the pause state for the data carried by one or more radio bearers, the pause state indication information is sent to a base station as external equipment, and the pause state indication information contains the identification information of the radio bearer corresponding to the entering or leaving pause state and is used for indicating the user equipment to enter or leave the pause state to stop or start receiving the data carried by the radio bearer.

2. The user device of claim 1, comprising:

pause state indication information comprising first indication information and/or second indication information,

when user equipment enters a suspended state for data carried by one or more radio bearers, first indication information is sent to a base station serving as external equipment, wherein the first indication information comprises identification information of the radio bearer corresponding to the suspended state, and is used for indicating the user equipment to enter the suspended state to stop receiving the data carried by the radio bearer, and/or the user equipment stops receiving the data carried by the radio bearer

When the user equipment leaves the suspend state for the data carried by one or more radio bearers, the user equipment sends second indication information to the base station as the external equipment, wherein the second indication information comprises the identification information of the radio bearer corresponding to the leave suspend state and is used for indicating the user equipment to leave the suspend state to restart receiving the data carried by the radio bearer.

3. The user equipment of claim 2, comprising:

the method comprises the step (11) of sending the first indication information when the user equipment enters a suspended state for data carried by one or more radio bearers, or further comprises at least one of the following steps: step (12) stopping receiving data carried by the radio bearer; step (13) stopping uplink feedback; and the step (14) is reset, wherein the step (11) to the step (14) are not separated in sequence,

the method comprises the step (21) of sending second indication information when the user equipment leaves the suspended state for data carried by one or more radio bearers, or further comprises at least one of the following steps: step (22) begins to receive data carried by the radio bearer; step (23) starting uplink feedback; and step (24) resetting, wherein the steps (21) to (24) are not separated in sequence.

4. The user device of claim 1, comprising:

pause state indication information including at least a pause function indicator at the head, a need to enter or leave a pause state RBID,

wherein the length of the pause function indicator is determined according to the number of all MAC CE formats required to be supported.

5. The user equipment of any of claim 1, comprising:

wherein, when the user equipment needs to continue receiving data after a period of time, the stop receiving in the period of time is not enough to start leaving session (leave session) for determining the pause state,

the user equipment enters or leaves the suspended state with the granularity of radio bearers.

6. The user device of claim 1, comprising:

entering a pause state, comprising the following entering modes: a pause key of the application is pressed; or the application is to be suspended, or,

leaving the suspended state comprises leaving the following ways: the pause key of the application is released; or the application is woken up or activated.

7. The user device of claim 1, comprising:

wherein, the pause state indication information is transmitted in any one of the following modes in the network architecture: physical Layer (PHY) information; radio Resource Control (RRC) layer information; or a Medium Access control element (mac ce).

8. The user device of claim 1, comprising:

wherein the pause state indication information is transmitted through the MACCE,

the suspend state indication information is used to indicate that the MAC CE carrying the suspend state indication information enters the suspend state, and includes: an identity RBID of one or more suspended state radio bearers, or further in free combination with a timer;

pause state indication information when used to indicate leaving the pause state, the format of the MAC CE carrying the pause state indication information includes: the identity of one or more radio bearers leaving the suspended state identifies the RBID.

9. The user equipment of claim 8, comprising:

wherein the timer comprises a first timer and/or a second timer,

wherein the first timer is used for indicating: the time period of not receiving the data carried by the radio bearer, if the time period of the first timer is exceeded, the receiving of the data carried by the radio bearer is restarted,

the second timer is used for indicating that: when the end point of the time period of the second timer is reached, if it is known that the ue still does not restart receiving the data carried by the radio bearer, it is determined that the ue starts leaving the session (leave session),

the period length of the second timer is greater than the period length of the first timer,

the identities (RBIDs) of the plurality of radio bearers are respectively collocated with the first timer and/or the second timer which are independently set up.

10. The user equipment of claim 7, comprising:

wherein, the MAC CE format carrying the pause state indication information has different format types, the format types are determined to be introduced in whole or in part by the requirement of a preset communication protocol,

and introducing a MAC CE format to transmit between the user equipment and the external equipment according to the current actual transmission condition.

11. The user equipment of claim 10, comprising:

the current actual transmission condition comprises the number of the wireless bearers in the suspension state, the existence of the timer, the type of the included timer and the timing duration, so as to determine the MAC CE format of the suspension state indication information.

12. The user equipment of claim 8, comprising:

the MAC information sub Header MAC sub Header and MAC CE are correspondingly matched and generated, and the method comprises the following steps: a logical channel ID field (LCID), and/or a further extended logical channel ID field (eLCID),

and (3) according to the type and the number of all or part of the introduced MAC CE formats, matching and introducing a new LCID value or a new eLCID value in an LCID assignment definition table or an eLCID assignment definition table.

13. The user device of claim 1, comprising:

judging whether the data carried by the RB corresponding to the RBID is transmitted through a unicast channel or a multicast channel, wherein the steps comprise:

the user equipment can know that the data carried by the RB is transmitted by a multicast channel or a unicast channel through the identity RBID.

14. The user equipment of claim 1, comprising:

wherein before the ue determines to leave the suspend state, the method comprises: the user equipment enters the suspended state, or enters the suspended state which is determined by utilizing the preset continuous error packet threshold value.

15. The user device of claim 1, comprising:

a control part, an application layer part, a PDCP part, an RLC part, a MAC part, and a communication part, a storage part, wherein,

when the application layer part receives an instruction to enter or leave the suspended state or when the user equipment is determined to enter or leave the suspended state, the control part controls the MAC part to generate suspended state indication information and controls the communication part to transmit the suspended state indication information.

16. The user equipment of claim 15, further comprising:

a PDCP part, an RLC part, and a storage part,

wherein, when entering into the suspend state, the control part controls the communication part to stop receiving data, controls the PDCP part and the RLC part not to perform uplink feedback, and resets the storage part, the PDCP part and the RLC part, or

When the mobile station leaves the suspend state, the control unit controls the communication unit to start receiving data, controls the PDCP unit and the RLC unit to start uplink feedback, and resets the memory unit, the PDCP unit, and the RLC unit.

17. A base station communicatively coupled to the user equipment of any of claims 1 to 16, comprising:

the base station receives pause state indication information sent by the user equipment, acquires the identity identifier RBID of the radio bearer entering the pause state in the pause state indication information, judges that the data borne by the RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel,

when data transmission is carried out through the unicast channel, executing any one of the following unicast channels corresponding to the RB in a non-sequential manner: stopping new transmission, retransmission and resetting, further judging whether the RB reaches a pause quantity threshold value when data transmission is carried out through a multicast channel, and when the RB reaches the pause quantity threshold value, sequentially executing any one of the following multicast channels corresponding to the Rb without any sequence: stopping retransmission, stopping retransmission and resetting, when not reaching, the multicast channel corresponding to RB Su is not influenced, and/or

The base station receives suspension state indication information sent by user equipment, acquires an identity (RBID) of a radio bearer leaving the suspension state in the suspension state indication information, and carries out any one of the following operations on a channel corresponding to a related RB in a non-sequential manner: start new transmission, start retransmission, reset.

18. The base station of claim 17, comprising:

wherein, judging the data carried by the RB corresponding to the RBID to be data transmission through a unicast channel or a multicast channel, the steps include:

the base station can know that the data carried by the RB is transmitted by a multicast channel or a unicast channel through the identity RBID itself.

19. The base station of claim 18, comprising:

the identity RBID is previously classified into MRB (MBMS/MBS radio bearer) or DRB (Data radio bearer) and stored.

20. The base station of claim 17, comprising:

when the pause number threshold is lower than 100%, the situation that the remaining user equipment in the multicast group in which the multicast is stopped needs to continue receiving the data corresponding to the radio bearer RB exists, and then the base station establishes a unicast channel for the radio bearer RB and respectively sends the data in a unicast manner.

21. A communication system, comprising:

at least one user equipment is communicatively coupled to at least one base station,

wherein the user equipment is the user equipment of any one of the preceding claims 1 to 16,

the base station is as claimed in any of the preceding claims 17-20.

22. A communication method is suitable for a user equipment side, and is characterized by comprising the following steps:

when entering or leaving the suspended state for the data carried by one or more radio bearers, the user equipment sends suspended state indication information to a base station serving as external equipment, wherein the suspended state indication information contains identification information of the radio bearer corresponding to the entering or leaving suspended state, and is used for indicating the user equipment to enter or leave the suspended state to stop or start receiving the data carried by the radio bearer.

23. A communication method applied to a base station side, comprising:

the base station receives pause state indication information sent by the user equipment, acquires the identity identifier RBID of the radio bearer entering the pause state in the pause state indication information, judges that the data borne by the RB corresponding to the RBID is data transmission through a unicast channel or a multicast channel,

when data transmission is carried out through the unicast channel, executing any one of the following unicast channels corresponding to the RB in a non-sequential manner: stopping new transmission, stopping retransmission and resetting, further judging whether the RB reaches a pause quantity threshold value when data transmission is carried out through a multicast channel, and when the RB reaches the pause quantity threshold value, executing any one of the following multicast channels corresponding to the Rb in a non-sequential manner: stopping retransmission, stopping retransmission and resetting, when not reaching, the multicast channel corresponding to RB Su is not influenced, and/or

The base station receives suspension state indication information sent by user equipment, acquires an identity (RBID) of a radio bearer leaving the suspension state in the suspension state indication information, and carries out any one of the following operations on a channel corresponding to a related RB in a non-sequential manner: start new transmission, start retransmission, reset.

24. A method of communication, comprising:

a communication method adapted for a user equipment as in claim 22 above, and

a communication method as claimed in claim 23, adapted for use in a base station.

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