CN115696221A

CN115696221A - Wireless link control configuration method, device, terminal and network side equipment

Info

Publication number: CN115696221A
Application number: CN202110856496.2A
Authority: CN
Inventors: 刘佳敏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2023-02-03

Abstract

The application discloses a wireless link control configuration method, a device, a terminal and network side equipment, belonging to the technical field of communication, wherein the wireless link control configuration method of the embodiment of the application comprises the following steps: under the condition that a first operation triggering condition is met, the terminal executes a first operation; wherein the first operation comprises: the point-to-multipoint PTM radio link of the multicast radio bearer MRB controls an RLC entity reset operation or a PTMRLC entity initialization operation of the MRB.

Description

Wireless link control configuration method, device, terminal and network side equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method, an apparatus, a terminal, and a network side device for configuring radio link control.

Background

In the prior art, during unicast reception, because a transmitting end and a receiving end are in one-to-one communication and each other has better grasp on Link conditions, serious Radio Link Control (RLC) Sequence Number (SN) window desynchronization and confusion generally do not occur, so that RLC SNs are continuously maintained. In the case of a conventional Long Term Evolution (LTE) Multimedia Broadcast multicast service Single Frequency Network (MBSFN), in order to maintain continuous synchronization of RLC SNs among different cells, a Network side performs a L2 SN zero clearing operation every period when sending a Broadcast service, so as to achieve synchronous SN operation among multiple cells. For broadcast (broadcast) and multicast (multicast) services, data transmission may be abnormal according to the change of link conditions during the service process, and at this time, the problems of window desynchronization and SN confusion of the RLC are easily caused, resulting in abnormal packet loss.

Disclosure of Invention

The embodiment of the application provides a method, a device, a terminal and a network side device for controlling and configuring a radio link, which can solve the problem that a terminal receiving MBS service in the prior art is easy to cause RLC window desynchronization and SN confusion, resulting in abnormal packet loss.

In a first aspect, a radio link control configuration method is provided, including:

under the condition that a first operation triggering condition is met, the terminal executes a first operation;

wherein the first operation comprises: the multicast radio carries a point-to-multipoint PTM radio link control RLC entity reset operation of the MRB or a PTM RLC entity initialization operation of the MRB.

In a second aspect, a radio link control configuration apparatus is provided, including:

the execution module is used for executing a first operation under the condition that a first operation triggering condition is met;

In a third aspect, a radio link control configuration method is provided, including:

the network side equipment sends first information to the terminal;

the first information is used for assisting a terminal to determine whether a first operation needs to be executed, and the first operation comprises: the multicast radio carries a point-to-multipoint PTM radio link control RLC entity reset operation of the MRB or a PTM RLC entity initialization operation of the MRB.

In a fourth aspect, an apparatus for configuring radio link control is provided, including:

the sending module is used for sending the first information to the terminal;

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect.

In a sixth aspect, a terminal is provided, which includes a processor and a communication interface, where the processor is configured to execute a first operation when a first operation trigger condition is satisfied;

In a seventh aspect, a network-side device is provided, which includes a processor, a memory, and a program or an instruction stored on the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the method according to the third aspect.

The eighth aspect provides a network side device, which includes a processor and a communication interface, where the communication interface is used to send first information to a terminal;

the first information is used for assisting the terminal to determine whether a first operation needs to be executed, wherein the first operation comprises the following steps: the multicast radio carries a point-to-multipoint PTM radio link control RLC entity reset operation of the MRB or a PTM RLC entity initialization operation of the MRB.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the third aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the steps of the method according to the first or third aspect.

In an eleventh aspect, there is provided a computer program/program product stored on a non-transitory storage medium, the program/program product being executable by at least one processor to implement the steps of the method according to the first or third aspect.

In the embodiment of the application, the initialization operation or the reset operation of the PTM RLC entity of the MRB is carried out at a proper time, so that the RLC window desynchronization and SN confusion are avoided as much as possible, and the accuracy of data packet transmission is ensured.

Drawings

FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart illustrating a radio link control configuration method according to an embodiment of the present application;

fig. 3 is one of block diagrams of a radio link control configuration apparatus according to an embodiment of the present application;

fig. 4 is a block diagram of a terminal according to an embodiment of the present application;

fig. 5 is a second flowchart of a radio link control configuration method according to an embodiment of the present application;

fig. 6 is a second block diagram of an apparatus for radio link control configuration according to an embodiment of the present application;

fig. 7 is a block diagram of a network-side device according to an embodiment of the present application;

fig. 8 is a block diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and do not limit the number of objects, for example, a first object can be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6th generation,6g communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but a specific type of the Base Station is not limited.

The following describes in detail a radio link control configuration method, an apparatus, a terminal and a network side device provided in the embodiments of the present application with reference to the drawings and some embodiments and application scenarios thereof.

As shown in fig. 2, an embodiment of the present application provides a radio link control configuration method, including:

step 201, under the condition that a first operation triggering condition is met, the terminal executes a first operation;

wherein the first operation comprises: a point-to-multipoint (PTM) Radio Link Control (RLC) entity reset operation of a Multicast Radio Bearer (MRB) or a PTM RLC entity initialization operation of the MRB.

It should be noted that, for multicast (multicast) services that need to enter a connected (connected) state for reception, since such services are for connected UEs, each UE may configure the same or different hybrid automatic repeat request acknowledgement (HARQ) feedback resource locations for HARQ feedback and retransmission, and therefore, for the RLC layer, certain reordering needs to be performed on the disorder caused by HARQ retransmission, and therefore, a receive window and a reordering function are needed, that is, the RLC receive window length cannot be set to 0, the general window length is half of the SN space length, for example, the SN space length occupies 6 bits (bit), the window length is 32, and for example, the SN space length occupies 12 bits, and the window length is 2048.

For a single UE, there may be a situation that the PTM does not receive a data packet for a certain period of time, for example, the PTM path quality of the UE is poor, or the network performs special scheduled transmission to the UE through the PTP path, which may cause SN confusion or window confusion when the UE performs PTM path reception again, or even a situation that the reassembly of the SN packet fails, for example, the SN space length of the SN at the receiving end of PTM RLC Unacknowledged Mode (UM) occupies 6 bits, the window length is 32, after the SN of the data packet sent by the network side is 33, one UE1 is switched to the PTP link to start receiving the remaining data, since the PTP RLC entity and the PTM RLC entity are independent, after the PTM link of UE1 is switched to, UE1 returns to the PTM link to start receiving the data, at this time, if the received SN =32, 33, 31, etc. data packets or segments are received, UE1 considers that these data packets are repeatedly received data packets, and deletes these data packets, or deletes these data packets, which are stored in error, that the SN packets arrive at the SN stored in turn from the network side again, that the SN is already processed by the existing window mechanism, that the SN is different from the SN repeatedly received SN packet, i.e.e.g, the network side, the SN repeatedly sends a new SN packet, that the SN is already processed by the SN repeatedly processed by the existing window mechanism, that the SN repeatedly sends a new SN error occurs, that the SN is deleted packet.

In order to avoid the problem of processing errors at the RLC receiving side, it is necessary to perform related reset operation or initialization operation on the RLC receiving end entity in time to ensure correct operation of the RLC receiving end; specifically, the first operation triggering condition includes at least one of the following:

a101, a terminal receives a signaling for deactivating a PTM path sent by a network side device;

it should be noted that, if the network side device determines to use the PTP path to transmit the relevant MRB data to the UE, it needs to send the deactivation signaling of the PTM path to the UE in time, and the UE may start to abandon receiving the PTM when receiving the signaling, so that the PTM RLC entity may be initialized or reset.

Optionally, in this case, the first operation triggering condition may further include one of:

a1011, the terminal completes the recombination of the data packet;

that is, when receiving the signaling for deactivating the PTM path sent by the network side device, the terminal performs the PTM RLC entity initialization operation or reset operation when the terminal completes the reassembly of the data packet or after the completion of the reassembly of the data packet.

A1012, overtime a recombination timer of the terminal;

that is, when receiving the signaling for deactivating the PTM path sent by the network side device, the terminal performs the PTM RLC entity initialization operation or reset operation when the reassembly timer expires.

A1013, the receiving buffer of the terminal is empty;

that is, when receiving the signaling for deactivating the PTM path sent by the network side device and the reception buffer is empty, the terminal performs the PTM RLC entity initialization operation or reset operation.

A102, a terminal receives a signaling for activating a PTM path sent by a network side device;

it should be noted that, if the network side device determines to transmit the relevant MRB data to the UE by using the PTM path, it needs to send the activation signaling of the PTM path to the UE in time, and the UE receives the activation signaling and can start PTM reception, so that the PTM RLC entity can be initialized or reset.

A103, the terminal receives an RLC data packet in a point-to-point (PTP) path corresponding to the PTM path;

it should be noted that the RLC data packet is any RLC data packet, for example, the RLC data packet is a new RLC data packet, or the RLC data packet schedules a newly transmitted data packet for a cell radio network temporary identifier (C-RNTI), that is, the data packet must be scheduled from the first HARQ transmission by using the C-RNTI, rather than a data packet that is scheduled by a group radio network temporary identifier (G-RNTI) for HARQ new transmission or C-RNTI for retransmission.

This is to say that the PTM path and the PTP path have a common (common) association relationship of Packet Data Convergence Protocol (PDCP) entities, that is, different packets of the same service or the same packet are transmitted by the PTM path and the PTP path, and as soon as the network is found to start to schedule a new transmission by unicast, it means that the PTM path RLC entity needs to be initialized or reset.

A104, a periodic timer is overtime, the periodic timer is started when the PTM path is established and is restarted after being overtime;

that is, after each timeout of the periodic timer, an initialization operation or a reset operation of the PTM RLC entity is performed and the periodic timer is restarted.

It should be noted that the timing duration of the periodic timer is agreed by a protocol or configured by a network side device.

A105, the terminal receives data packets meeting a first condition, wherein the first condition comprises that the number of the received data packets is equal to a first threshold after a first operation is executed last time;

it should be noted that, the first threshold may be agreed by a protocol, or may be configured by a network side device; in this case, whether to perform initialization operation or reset operation of the RLC entity is determined according to the number of the packets; the statistics of the number of the data packets are re-counted after the initialization operation or the reset operation of the PTM RLC entity each time, that is, after the initialization operation or the reset operation of the PTM RLC entity is performed, the initialization operation or the reset operation of the PTM RLC entity is performed again every M data packets are received, and the number of the received data packets is re-counted.

A106, the terminal receives RLC Protocol Data Units (PDUs) meeting a second condition, wherein the second condition comprises that the number of the received RLC PDUs carrying SN after the first operation is executed last time is equal to a second threshold;

it should be noted here that the second threshold may be agreed by a protocol, or may be configured by a network side device; since RLC UM carries SN only in segmented packets and does not carry SN in non-segmented packets, it can be determined whether to perform an initialization operation or a reset operation of the RLC entity based on the true number of received PDUs, for example, after performing the initialization operation or the reset operation of the PTM RLC entity, count the number of received RLC PDUs, after receiving N RLC PDUs, perform the initialization operation or the reset operation of the PTM RLC entity again, and count the number of received RLC PDUs again.

A107, the percentage of the length of the RLC SN window occupied by the number of the data packets waiting for being recombined in the RLC SN window is larger than or equal to a first threshold;

it should be noted that, this case is to determine whether to perform an initialization operation or a reset operation of the PTM RLC entity based on the window condition, for example, the percentage of the RLC SN window length occupied by the number of packets waiting for reassembly in the window is greater than or equal to 50%, which proves that the link is poor, and at this time, the initialization operation or the reset operation of the PTM RLC entity may be performed.

A108, the terminal receives the repeated SN;

it should be noted that, this is the case of determining the initialization operation or the reset operation of the PTM RLC entity based on the received SNs, that is, if the SN that has been received and successfully reassembled or that has timed out is found and a data packet with a repeated SN is received again within the reception window, the initialization operation or the reset operation of the PTM RLC entity is performed.

A109, the terminal receives at least partially overlapped two RLC PDU segments;

it should be noted that the at least partial overlapping herein includes partial overlapping or complete overlapping.

A110, overtime a recombination timer of a terminal;

it should be noted that, if the reassembly timer expires, which proves that the link is poor, the initialization operation or the reset operation of the PTM RLC entity may also be performed at this time.

A111, the terminal has receiving abnormity;

it should be noted that the reception exception may include a protocol-agreed RLC layer reception exception and/or a reception exception of other layers except the RLC layer (for example, a MAC layer reception exception);

wherein, the RLC layer receiving exception of the protocol agreement refers to protocol exception, for example, the segments with the same SN number are received for the first time, the segments are received for 0-300 bytes, and the segments are received for the second time, the segments are received for 100-400 bytes, for UM, because re-segmentation is not supported, such a byte problem of segment repetition indicates that SN confusion or inversion occurs, and the initialization operation or reset operation of the PTM RLC entity should be performed immediately.

Optionally, it should be further noted that, in the case that the first operation trigger condition is satisfied, before the terminal performs the first operation, the method may further include:

determining that the prohibit timer has expired;

and the prohibition timer is started when the PTM RLC entity is established and restarted after the terminal executes the first operation.

That is, when the terminal determines that the prohibit timer has expired, if the terminal satisfies any one or several of a101-a111, the terminal performs an initialization operation or a reset operation of the PTM RLC entity.

It should be noted that, in the above situation, the PTM path abnormality is indicated or discovered, and the initialization operation and/or the reset operation of the PTM RLC entity is performed in time, which facilitates to immediately return to the initialization state from the current error state, so as to restart the new receiving state machine for subsequent receiving. Optionally, after step 201, the method further includes: the upper boundary of the RLC SN window is set according to the SN value of the first received packet.

That is, generally, after initialization, the upper bound of the receiving window is set according to the value of SN of the first data packet received again, and then continuous reception can ensure that the RLC receiving state machine operates normally.

It should be noted that Broadcast (Broadcast) service and another multicast service (low QoS, which can be received in Idle/Inactive (also called Inactive) state) have a common feature of supporting reception by UEs in Idle/Inactive state, because the number of UEs in Idle/Inactive state is not fixed, the network side generally cannot sense in real time, and since the UEs in Idle/Inactive state do not need to maintain uplink synchronization, the UEs in Idle/Inactive state generally do not send reception Feedback about multicast Broadcast service, such as HARQ Feedback. That is, for the sending end base station, it is not necessary to consider the retransmission mechanism based on HARQ feedback, so it can be ensured that the data scheduling is sequential, that is, the transmission of the previous data packet is performed first (optionally including the active repeat transmission mechanism), and then the transmission of the next data packet is performed. In such a case, for PTM reception, its RLC may not need to consider the out-of-order detection and ordering mechanism, i.e. the RLC reception window may be set to 0. With the RLC window set to 0, any SN reception can be handled as a new packet without the effects of duplicate detection operations and false deletions due to possible SN loss of synchronization.

In particular, the UE in Idle/Inactive state may also configure the feedback of HARQ NACK Only for improving reliability. This situation means that a common HARQ feedback resource location is configured for all possible UEs in Idle/Inactive state, and generally, in order to consider the uplink asynchronous state of the UEs in Idle/Inactive state, the resource space that may be needed by this resource location is larger than that of the ordinary connected-state UEs, that is, a certain guard interval is left before and after the resource, so as to avoid the influence on the transceiving of other UEs. When the UE in Idle/Inactive state receives error, HARQ NACK is fed back to the base station at the position of HARQ feedback resource, the network side finds that the HARQ NACK exists or the position receiving power accumulation reaches a certain threshold, HARQ retransmission is carried out for all the UE, when the UE in Idle/Inactive state receives correctly, no HARQ feedback is fed back, if all the UE receives correctly, the network cannot detect any feedback at the position of the HARQ feedback resource or the position receiving power is smaller than the threshold, all the UE is considered to be correct, HARQ retransmission can be abandoned, and the next data packet is processed.

In the above mechanisms, as a broadcast service and an idle/inactive multicast service (multicast for idle/inactive service) also introduce an HARQ feedback and retransmission mechanism, a PTM RLC entity is required to perform out-of-order detection and a certain window mechanism, so the window cannot be 0. In the case that the window is not 0, SN confusion and roll-over still occur, so step 201 may be preceded by:

the terminal acquires first information;

and the terminal determines whether the first operation needs to be executed or not according to the first information.

Specifically, the implementation manner of step 201 is:

under the condition that the first operation needs to be executed and the first operation triggering condition is met, the terminal executes the first operation;

wherein the first information comprises at least one of:

b11, indication information sent by the network side equipment, wherein the indication information is used for indicating whether a first operation needs to be executed or not;

it should be noted that, this case is that the network explicitly indicates whether the first operation needs to be performed, for example, the network may use 1bit, explicitly indicates whether the UE needs to perform the initialization operation or the reset operation of the PTM RLC entity.

B12, first configuration information sent by a network side device, wherein the first configuration information includes: RLC configuration information or hybrid automatic repeat request HARQ feedback (feedback) configuration information;

it should be noted that, in this case, the network implicitly indicates whether the first operation needs to be performed, for example, the RLC configuration information may be configuration information of a window size, when the window size is configured to be 0, the terminal does not need to perform an initialization operation or a reset operation of the PTM RLC entity, and when the window size is configured to be other than 0, the initialization operation or the reset operation of the PTM RLC entity needs to be performed, that is, the initialization operation or the reset operation of the PTM RLC entity is performed when the first operation triggering condition is satisfied.

For example, when the HARQ feedback function is turned off, the initialization operation or the reset operation of the PTM RLC entity is not required to be performed when the first operation triggering condition is satisfied; when the HARQ feedback function is turned on, the initialization operation or the reset operation of the PTM RLC entity needs to be performed when the first operation trigger condition is satisfied.

B13, the service type sent by the network side equipment;

that is, in some service types, the initialization operation or the reset operation of the PTM RLC entity needs to be performed, for example, in the case that the connected terminal performs the multicast service, the initialization operation or the reset operation of the PTM RLC entity needs to be performed when the first operation triggering condition is met; the terminal may determine whether to perform an initialization operation or a reset operation of the PTM RLC entity according to B11 and/or B12 in case of performing the broadcast service.

B14, RRC state of the terminal;

it should be noted that the RRC state includes a connected state, an idle state, and/or an inactive state.

The implementation manner is that the state of the terminal is determined, and then whether the initialization operation or the reset operation of the PTM RLC entity is performed when the first operation triggering condition is met is determined based on the service type sent by the network side device or the first configuration information sent by the network side device.

Generally, it cannot be determined whether to perform an initialization operation or a reset operation of the PTM RLC entity when the first operation trigger condition is satisfied, which is determined by the RRC state of the terminal alone, and at least one of the service type, the RLC configuration information, and the HARQ feedback configuration information must be combined.

For example, when the terminal is in a connected state and performs a multicast service, it is determined that the terminal needs to perform a first operation;

it should be further noted that, in this case, the determining whether the first operation needs to be executed according to the first information includes:

and determining that the first operation needs to be executed under the condition that the service type is the multicast service of the connected terminal.

It should be particularly noted here that, in principle, a service of a multicast for connected UE may also perform a corresponding operation based on the above configuration, but since the service generally starts HARQ feedback and the window is not 0, it is basically required by default to perform an initialization operation or a reset operation of the PTM RLC entity when the first operation trigger condition is satisfied.

Optionally, after the terminal determines whether the first operation needs to be executed according to the first information, the method further includes:

under the condition that the first operation is determined not to be executed, if the terminal receives two first RLC data packet segments with the same SN and the two first RLC data packet segments are at least partially overlapped, the terminal reserves a target segment;

wherein the target segment is at least one of two first RLC data packet segments.

It should be noted that, in the case that the target segment is one RLC data packet segment of two first RLC data packet segments, the target segment is the first RLC data packet segment of the two first RLC data packet segments whose receiving time is later.

That is, in the case of not performing initialization operation or reset operation of the PTM RLC entity, when the terminal receives RLC packet segments carrying the same SN, a data overlap condition occurs, for example, 0-400 bytes of a first RLC packet segment with SN 35 is received for the first time, and 200-500 bytes of another RLC packet segment with SN 35 are received subsequently, obviously, there is an obvious overlap portion of 200-400 bytes in the two RLC packet segments, and the RLC UM sending end generally does not have a condition of segment overlap because it does not support re-segmentation, and this condition occurs, which can only illustrate that the first received RLC packet segment and the second received RLC packet segment belong to two different RLC packets although the SN is equal; if two RLC data packets are judged to belong to, processing is needed, the previous RLC data packet segmentation is generally deleted, the next newer RLC data packet segmentation is reserved, and the subsequent possible other RLC data packet segmentation is waited to be recombined; or, two RLC data packet segments may be respectively reserved, and certain matching reassembly is performed according to the subsequently received RLC data packet segments, in general, if any overlapping portion exists between the subsequent RLC data packet segment and the previous two RLC data packet segments, it indicates that the subsequent RLC data packet segment and the previous two RLC data packet segments are different RLC data packet segments, and if there is no overlapping portion, it may be the same RLC data packet segment, and in the case of the same RLC data packet segment, it may be considered that the subsequent RLC data packet segment and the previous two RLC data packet segments are reassembled preferentially, because the second RLC data packet segment is updated in the receiving time, the reassembly success probability is higher.

In summary, the method for maintaining the RLC state of the terminal receiving the MBS service is provided in the embodiments of the present application, and the terminal side can perform initialization/reset operation of the RLC state variable in time, so that the receiving effect of the MBS service is improved on the basis of considering the UE performance, and the overall efficiency of the system can be improved more flexibly.

It should be noted that, in the radio link control configuration method provided in the embodiment of the present application, the execution main body may be a radio link control configuration device, or a control module in the radio link control configuration device for executing the radio link control configuration method. In the embodiment of the present application, a radio link control configuration apparatus is taken as an example to execute a radio link control configuration method, and the radio link control configuration apparatus provided in the embodiment of the present application is described.

As shown in fig. 3, an embodiment of the present application provides a radio link control configuration apparatus 300, including:

an executing module 301, configured to execute a first operation if a first operation trigger condition is met;

Optionally, before the executing module 301 executes the first operation when the first operation triggering condition is satisfied, the method further includes:

the acquisition module is used for acquiring first information;

the first determining module is used for determining whether a first operation needs to be executed or not according to the first information;

the execution module 301 is configured to:

executing a first operation under the condition that the first operation needs to be executed and a first operation triggering condition is met;

wherein the first information comprises at least one of:

the method comprises the steps that indication information sent by network side equipment is used for indicating whether first operation needs to be executed or not;

first configuration information sent by a network side device, wherein the first configuration information includes: RLC configuration information or hybrid automatic repeat request HARQ feedback configuration information;

and the service type sent by the network side equipment.

Optionally, in a case that the first information includes a service type sent by a network side device, the first determining module is configured to:

Optionally, the first operation trigger condition comprises at least one of:

the terminal receives a signaling for deactivating the PTM path sent by the network side equipment;

the terminal receives a signaling for activating the PTM path sent by the network side equipment;

the terminal receives the RLC data packet at the point-to-point PTP path corresponding to the PTM path;

the periodic timer is overtime, and the periodic timer is started when the PTM path is established and restarted after the time is overtime;

the terminal receives data packets meeting a first condition, wherein the first condition comprises that the number of the received data packets is equal to a first threshold after the first operation is executed last time;

the terminal receives RLC Protocol Data Units (PDUs) meeting a second condition, wherein the second condition comprises that the number of the RLC PDUs carrying SN received after the first operation is executed last time is equal to a second threshold;

the percentage of the length of the RLC SN window occupied by the number of the data packets waiting for recombination in the RLC SN window is greater than or equal to a first threshold;

the terminal receives the repeated SN;

a terminal receives two RLC PDU segments which are at least partially overlapped;

the recombination timer of the terminal is overtime;

the terminal has a reception abnormality.

Optionally, in a case that the first operation triggering condition includes that the terminal receives a signaling for deactivating the PTM path sent by the network-side device, the first operation triggering condition further includes one of:

the terminal completes the recombination of the data packet;

the recombination timer of the terminal is overtime;

the reception buffer of the terminal is empty.

Optionally, in the case that the first operation trigger condition is satisfied, before the executing module 301 executes the first operation, the method further includes:

a second determining module, configured to determine that the prohibit timer is overtime;

and the prohibition timer is started when the PTM RLC entity is established and is restarted after the terminal executes the first operation.

Optionally, after the executing module executes the first operation, the method further includes:

and the setting module is used for setting the upper boundary of the RLC SN window according to the SN value of the received first data packet.

Optionally, after the first determining module determines whether the first operation needs to be executed according to the first information, the method further includes:

a reserving module, configured to, if it is determined that the first operation does not need to be performed, reserve a target segment if the terminal receives two first RLC data packet segments with the same SN and at least partial overlap exists between the two first RLC data packet segments;

Optionally, in a case that the target segmentation is one of two first RLC data packet segments, the target segmentation is the first RLC data packet segment with a later reception time of the two first RLC data packet segments.

It should be noted that the embodiment of the apparatus corresponds to the embodiment of the method, and various implementation processes and implementations of the embodiment of the method can be applied to the embodiment of the apparatus, and the same technical effects can be achieved.

The radio link control configuration apparatus in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The radio link control configuration apparatus provided in the embodiment of the present application can implement each process implemented in the method embodiment of fig. 2, and achieve the same technical effect, and is not described here again to avoid repetition.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for executing a first operation under the condition that a first operation trigger condition is met;

The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation modes of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 4 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 400 includes but is not limited to: at least some of the components of the radio unit 401, the network module 402, the audio output unit 403, the input unit 404, the sensor 405, the display unit 406, the user input unit 407, the interface unit 408, the memory 409, and the processor 410, and the like.

Those skilled in the art will appreciate that the terminal 400 may further include a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 410 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The terminal structure shown in fig. 4 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that in the embodiment of the present application, the input Unit 404 may include a Graphics Processing Unit (GPU) 4041 and a microphone 4042, and the Graphics processor 4041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 406 may include a display panel 4061, and the display panel 4061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 407 includes a touch panel 4071 and other input devices 4072. A touch panel 4071, also referred to as a touch screen. The touch panel 4071 may include two parts, a touch detection device and a touch controller. Other input devices 4072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment of the application, the radio frequency unit 401 receives downlink data from a network side device and then processes the downlink data to the processor 410; in addition, the uplink data is sent to the network side equipment. Typically, radio unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 409 may be used to store software programs or instructions as well as various data. The memory 409 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 409 may include a high-speed random access Memory, and may further include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 410 may include one or more processing units; alternatively, the processor 410 may integrate an application processor, which primarily handles operating systems, user interfaces, and applications or instructions, etc., and a modem processor, which primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 410.

Wherein the processor 410 is configured to implement:

executing a first operation under the condition that a first operation triggering condition is met;

wherein the first operation comprises: the multicast radio bearer MRB point-to-multipoint PTM radio link control RLC entity reset operation or the MRB PTM RLC entity initialization operation.

Optionally, the processor 410 is configured to implement:

acquiring first information;

determining whether a first operation needs to be executed or not according to the first information;

wherein the first information comprises at least one of:

and the service type sent by the network side equipment.

Optionally, in a case that the first information includes a service type sent by a network-side device, the processor 410 is configured to implement:

Optionally, the first operation trigger condition comprises at least one of:

the terminal receives the signaling for activating the PTM path sent by the network side equipment;

the terminal receives an RLC data packet at a point-to-point PTP path corresponding to the PTM path;

the terminal receives RLC Protocol Data Units (PDUs) meeting a second condition, wherein the second condition comprises that the number of the received RLC PDUs carrying SN after the first operation is executed last time is equal to a second threshold;

the terminal receives the repeated SN;

the recombination timer of the terminal is overtime;

the terminal has a reception abnormality.

the terminal completes the recombination of the data packet;

the recombination timer of the terminal is overtime;

the reception buffer of the terminal is empty.

Optionally, the processor 410 is further configured to implement:

determining that the prohibit timer has expired;

Optionally, the processor 410 is further configured to implement:

the upper boundary of the RLC SN window is set according to the SN value of the first received packet.

Optionally, the processor 410 is further configured to implement:

Preferably, an embodiment of the present application further provides a terminal, which includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction, when executed by the processor, implements each process of the embodiment of the radio link control configuration method, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the radio link control configuration method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As shown in fig. 5, an embodiment of the present application further provides a radio link control configuration method, including:

step 501, a network side device sends first information to a terminal;

Optionally, the first information comprises at least one of:

indicating information, wherein the indicating information is used for indicating whether a first operation needs to be executed or not;

first configuration information, the first configuration information comprising: RLC configuration information or hybrid automatic repeat request HARQ feedback configuration information;

the type of service.

It should be noted that all descriptions regarding the network side device in the foregoing embodiments are applicable to the embodiment of the radio link control configuration method, and the same technical effect can be achieved, and are not described herein again.

As shown in fig. 6, an embodiment of the present application further provides a radio link control configuration apparatus 600, including:

a sending module 601, configured to send a first message to a terminal;

Optionally, the first information comprises at least one of:

the type of service.

It should be noted that the embodiment of the apparatus corresponds to the embodiment of the method, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the apparatus, and the same technical effects can be achieved.

Preferably, an embodiment of the present application further provides a network-side device, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, where the program or the instruction is executed by the processor to implement each process of the embodiment of the radio link control configuration method applied to the network-side device, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored in the computer readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements the processes of the embodiment of the method for configuring radio link control applied to the network side device, and can achieve the same technical effects, and in order to avoid repetition, the detailed description is omitted here.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The embodiment of the application also provides a network side device, which comprises a processor and a communication interface, wherein the communication interface is used for sending the first information to the terminal;

The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 7, the network-side device 700 includes: antenna 701, radio frequency device 702, baseband device 703. The antenna 701 is connected to a radio frequency device 702. In the uplink direction, the rf device 702 receives information through the antenna 701, and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes information to be transmitted and transmits the information to the radio frequency device 702, and the radio frequency device 702 processes the received information and transmits the processed information through the antenna 701.

The above-mentioned band processing apparatus may be located in the baseband apparatus 703, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 703, where the baseband apparatus 703 includes the processor 704 and the memory 75.

The baseband apparatus 703 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 7, where one of the chips, for example, the processor 704, is connected to the memory 705 to call up the program in the memory 705, so as to perform the network side device operations shown in the above method embodiments.

The baseband device 703 may further include a network interface 706, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 702.

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 705 and capable of being executed on the processor 704, and the processor 704 calls the instructions or programs in the memory 705 to execute the method executed by each module shown in fig. 6, and achieve the same technical effect, and are not described herein in detail to avoid repetition.

Optionally, as shown in fig. 8, an embodiment of the present application further provides a communication device 800, which includes a processor 801, a memory 802, and a program or instruction stored in the memory 802 and executable on the processor 801, for example, when the communication device 800 is a terminal, the program or instruction is executed by the processor 801 to implement each process of the foregoing radio link control configuration method embodiment, and the same technical effect can be achieved. When the communication device 800 is a network device, the program or the instruction is executed by the processor 801 to implement the processes of the foregoing radio link control configuration method embodiment, and the same technical effects can be achieved, and are not described herein again to avoid repetition.

The terminal referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange languages and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment.

The network side device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, a relay Station or an Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.

The network side device and the terminal may each use one or more antennas to perform Multiple Input Multiple Output (MIMO) transmission, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the above-mentioned radio link control configuration method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A radio link control configuration method, comprising:

2. The method according to claim 1, wherein before the terminal performs the first operation in case that the first operation trigger condition is satisfied, the method further comprises:

the terminal acquires first information;

the terminal determines whether a first operation needs to be executed or not according to the first information;

under the condition that a first operation triggering condition is met, the terminal executes a first operation, and the method comprises the following steps:

wherein the first information comprises at least one of:

the service type sent by the network side equipment;

the radio resource control RRC state in which the terminal is located.

3. The method according to claim 2, wherein in a case that the first information includes a service type sent by a network-side device, the determining whether a first operation needs to be performed according to the first information includes:

4. The method according to claim 1 or 2, characterized in that the first operation trigger condition comprises at least one of:

the terminal receives the repeated SN;

the recombination timer of the terminal is overtime;

the terminal has a reception abnormality.

5. The method according to claim 4, wherein in the case that the first operation trigger condition includes that the terminal receives signaling for deactivating the PTM path sent by the network-side device, the first operation trigger condition further includes one of:

the terminal completes the recombination of the data packet;

the recombination timer of the terminal is overtime;

the reception buffer of the terminal is empty.

6. The method according to claim 1, wherein in case that the first operation trigger condition is met, before the terminal performs the first operation, the method further comprises:

determining that the prohibit timer has expired;

7. The method of claim 1, further comprising, after said performing the first operation:

8. The method according to claim 2, wherein after the terminal determines whether the first operation needs to be performed according to the first information, the method further comprises:

9. The method of claim 8, wherein in the case that the target segmentation is one of two first RLC data packet segments, the target segmentation is the first RLC data packet segment of the two first RLC data packet segments that is received later in time.

10. A radio link control configuration method, comprising:

the network side equipment sends first information to the terminal;

11. The method of claim 10, wherein the first information comprises at least one of:

the type of service.

12. A radio link control configuration apparatus, comprising:

13. The apparatus of claim 12, wherein before the executing module executes the first operation if the first operation triggering condition is met, the apparatus further comprises:

the acquisition module is used for acquiring first information;

the execution module is configured to:

wherein the first information comprises at least one of:

the service type sent by the network side equipment;

the radio resource control RRC state in which the terminal is located.

14. The apparatus of claim 13, wherein in a case that the first information includes a traffic type sent by a network-side device, the first determining module is configured to:

15. The apparatus according to claim 12 or 13, wherein the first operation trigger condition comprises at least one of:

the terminal receives the repeated SN;

the recombination timer of the terminal is overtime;

the terminal has a reception abnormality.

16. The apparatus according to claim 15, wherein in a case that the first operation trigger condition includes that the terminal receives signaling for deactivating the PTM path sent by the network-side device, the first operation trigger condition further includes one of:

the terminal completes the recombination of the data packet;

the recombination timer of the terminal is overtime;

the reception buffer of the terminal is empty.

17. The apparatus of claim 15, wherein before the executing module executes the first operation if the first operation triggering condition is met, the apparatus further comprises:

the second determining module is used for determining that the prohibition timer is overtime;

18. The apparatus of claim 12, wherein after the execution module performs the first operation, further comprising:

19. The apparatus of claim 13, wherein after the first determining module determines whether the first operation needs to be performed according to the first information, the apparatus further comprises:

the reservation module is used for reserving a target segmentation if the terminal receives two first RLC data packet segmentations with the same SN and the two first RLC data packet segmentations are at least partially overlapped under the condition that the first operation is determined not to be executed;

20. The apparatus of claim 19, wherein the target segmentation is a first one of two first RLC data packet segments that is received later in time in the event that the target segmentation is one of the two first RLC data packet segments.

21. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the radio link control configuration method according to any one of claims 1 to 9.

22. A radio link control configuration apparatus, comprising:

the sending module is used for sending the first information to the terminal;

23. The apparatus of claim 22, wherein the first information comprises at least one of:

indication information, wherein the indication information is used for indicating whether a first operation needs to be executed or not;

the type of service.

24. A network side device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the radio link control configuration method according to claim 10 or 11.

25. A readable storage medium, on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the radio link control configuration method according to any one of claims 1 to 11.