CN110971349B

CN110971349B - Repeated transmission method, terminal and network side equipment

Info

Publication number: CN110971349B
Application number: CN201811141571.1A
Authority: CN
Inventors: 谌丽
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-06-08
Anticipated expiration: 2038-09-28
Also published as: CN110971349A; WO2020063441A1

Abstract

The embodiment of the invention provides a repeated transmission method, a terminal and network side equipment, wherein the method comprises the following steps: the terminal receives a configuration signaling sent by a network side, wherein the configuration signaling comprises repeated transmission configuration, and the repeated transmission configuration comprises: one service bearing RB is mapped to a plurality of radio link control RLC entities, different RLC entities are configured with different logical channels, and the different logical channels correspond to different partial bandwidth BWPs; and the terminal performs repeated transmission operation according to the repeated transmission configuration. The embodiment of the invention can improve the utilization rate of resources in the cell.

Description

Repeated transmission method, terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network side device for repeated transmission.

Background

In order to support the requirement of low-delay and high-reliability service transmission, a repeated transmission mechanism is introduced into a 5G New Radio (NR) system. The duplicate transmission mechanism may be a Protocol Data Unit (PDU) that transmits the same Packet Data Convergence Protocol (PDCP) Protocol Data Unit through multiple paths, so as to improve transmission reliability and reduce transmission delay through multi-path transmission gain. Specifically, a Radio Bearer (RB) (RB may also be referred to as a service Bearer) of the PDCP layer is transmitted through a plurality of logical channels in a Radio Link Control (RLC) layer, where one logical channel corresponds to one RLC entity. However, in the current retransmission scheme, data of two logical channels need to be transmitted in different cells, which results in low resource utilization in the cells.

Disclosure of Invention

The embodiment of the invention provides a repeated transmission method, a terminal and network side equipment, which aim to solve the problem of low utilization rate of resources in a cell.

In order to achieve the above object, an embodiment of the present invention provides a method for repeated transmission, including:

a terminal receives a configuration signaling sent by a network side, wherein the configuration signaling comprises repeated transmission configuration, and the repeated transmission configuration comprises: one RB is mapped to a plurality of RLC entities, different RLC entities are configured with different logical channels, and different logical channels correspond to different partial bandwidths (Band Width Part, BWP);

and the terminal performs repeated transmission operation according to the repeated transmission configuration.

Optionally, the repeated transmission configuration includes:

a Logical Channel Identity (LCID) and BWP index correspondence, where an LCID in the correspondence corresponds to one or more BWP indexes; or

And the LCID and the BWP group identification, wherein each BWP group in the corresponding relation comprises one or more BWPs.

Optionally, the plurality of RLC entities includes a main RLC entity, and the RB is transmitted through the main RLC entity when the repeated transmission is not activated.

Optionally, the repeated transmission configuration is activated or deactivated as follows:

activating or deactivating RRC signaling, wherein the RRC signaling is the configuration signaling;

media Access Control (MAC) signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

Optionally, the RRC signaling indicates an active BWP in the duplicate transmission configuration, where if multiple active logical channels exist in the logical channel corresponding to the RB, the RB is indicated to be active for duplicate transmission, and the active BWP exists in the BWP corresponding to the active logical channel; if an inactive logical channel exists in the corresponding logical channel in the RB, the inactive logical channel cannot transmit; or

The RRC signaling indicates whether the RB activates repeated transmission, if so, all logic channels corresponding to the RB are transmitted, and if not, the data of the RB is only transmitted on a main logic channel; or

The RRC signaling respectively indicates whether the logic channel corresponding to the RB activates transmission, indicates that the activated logic channel can carry out transmission and indicates that the non-activated logic channel cannot carry out transmission; or

The MAC signaling activates or deactivates the repeated transmission of a specific RB; or

The MAC signaling activates or deactivates a specific repeated transmission path, wherein the specific repeated transmission path is one or more repeated transmission paths in the repeated transmission configuration, and the repeated transmission path comprises a logical channel and/or BWP; or

The physical layer signaling activates or deactivates the repeated transmission of the terminal; or

The physical layer signaling activates or deactivates repetitive transmission of a specific BWP or a specific BWP group bearer.

Optionally, the terminal performs a retransmission operation according to the retransmission configuration, including:

if a specific BWP group in the duplicate transmission configuration has multiple active BWPs, transmitting data of a logical channel corresponding to the specific BWP group on one or more of the multiple active BWPs;

if active BWP change occurs in a BWP group in the Repeat transmission configuration, performing Hybrid Automatic Repeat Request (HARQ) retransmission on data of a logical channel corresponding to the BWP group on the newly activated BWP in the BWP group;

if the repeated transmission in the repeated transmission configuration is deactivated, but there is RLC data which is not successfully transmitted, transmitting the RLC data on any one or more activated BWPs of the terminal.

The embodiment of the invention also provides a repeated transmission method, which comprises the following steps:

the method comprises the following steps that network side equipment sends configuration signaling to a terminal, wherein the configuration signaling comprises repeated transmission configuration, and the repeated transmission configuration comprises the following steps: one RB is mapped to multiple RLC entities, and different RLC entities configure different logical channels, and different logical channels correspond to different BWPs.

Optionally, the repeated transmission configuration includes:

the LCID corresponds to the BWP indexes, wherein one LCID corresponds to one or more BWP indexes in the corresponding relation; or

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

An embodiment of the present invention further provides a terminal, including:

a receiving module, configured to receive a configuration signaling sent by a network side, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different BWPs;

and the transmission module is used for carrying out repeated transmission operation according to the repeated transmission configuration.

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

if the active BWP change occurs in a BWP group in the repeat transmission configuration, performing HARQ retransmission on the data of the logical channel corresponding to the BWP group on the newly activated BWP in the BWP group;

An embodiment of the present invention further provides a network side device, including:

a sending module, configured to send a configuration signaling to a terminal, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to multiple RLC entities, and different RLC entities configure different logical channels, and different logical channels correspond to different BWPs.

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

the transceiver is configured to receive a configuration signaling sent by a network side, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different BWPs;

and performing repeated transmission operation according to the repeated transmission configuration.

Optionally, the repeated transmission configuration includes:

media Access Control (MAC) signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

Optionally, the performing a repeat transmission operation according to the repeat transmission configuration includes:

An embodiment of the present invention further provides a network side device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

the transceiver is configured to send a configuration signaling to a terminal, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to multiple RLC entities, and different RLC entities configure different logical channels, and different logical channels correspond to different BWPs.

Optionally, the repeated transmission configuration includes:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the terminal-side retransmission method provided in the embodiment of the present invention, or the computer program is executed by the processor to implement the steps in the network-side device-side retransmission method provided in the embodiment of the present invention.

In the embodiment of the present invention, the terminal receives a configuration signaling sent by a network side, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different partial bandwidth BWPs; and the terminal performs repeated transmission operation according to the repeated transmission configuration. Therefore, the data of a plurality of logical channels corresponding to the RB can be transmitted on different BWPs, and the resource utilization rate in the cell is improved.

Drawings

FIG. 1 is a schematic diagram of a network architecture to which embodiments of the present invention are applicable;

fig. 2 is a flowchart of a retransmission method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a retransmission configuration according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another repeat transmission method provided in the embodiment of the present invention;

fig. 5 is a structural diagram of a terminal according to an embodiment of the present invention;

fig. 6 is a structural diagram of a network side device according to an embodiment of the present invention;

fig. 7 is a block diagram of another terminal according to an embodiment of the present invention;

fig. 8 is a structural diagram of another network-side device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, fig. 1 is a schematic diagram of a network structure to which the embodiment of the present invention is applicable, and as shown in fig. 1, the network structure includes a terminal 11 and a network side device 12, where the terminal 11 may be a User Equipment (UE) or other terminal devices, for example: terminal side equipment such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device) is not limited to a specific type of terminal in the embodiments of the present invention. The network side device 12 may be a base station, for example: macro station, LTE eNB, 5G NR NB, etc.; the network side device may also be a small station, such as a Low Power Node (LPN), pico, femto, or an Access Point (AP); the base station may also be a network node that is composed of a Central Unit (CU) and a plurality of Transmission Reception Points (TRPs) whose management is and controls. It should be noted that, in the embodiment of the present invention, the specific type of the network-side device is not limited.

Referring to fig. 2, fig. 2 is a flowchart of a retransmission method according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:

201. a terminal receives a configuration signaling sent by a network side, wherein the configuration signaling comprises repeated transmission configuration, and the repeated transmission configuration comprises: one RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different BWPs;

202. and the terminal performs repeated transmission operation according to the repeated transmission configuration.

The configuration signaling may be RRC signaling, but is not limited thereto, for example: other signaling that the network side device can send to the terminal is also possible.

In addition, the RB may be an RB repeatedly transmitted by the PDCP layer. The above-mentioned repeated transmission configuration may be as shown in fig. 3, where one RB is mapped to different RLC entities, and different logical channels are configured for the different RLC entities, and each logical channel is configured with a corresponding BWP, for example: as shown in fig. 3, one BWP group (BWPG) is configured for each logical channel, and each BWP group includes two BWPs therein.

It should be noted that the repeated transmission configuration shown in fig. 3 is only an illustration, for example: different logical channels may be configured with different numbers of BWPs, or some logical channels may be configured with the same number of BWPs while others are configured with different numbers of BWPs.

After receiving the above-mentioned repeat transmission configuration, the terminal can perform corresponding repeat transmission according to the repeat transmission configuration.

It should be noted that the multiple BWPs configured by the above-mentioned repeated transmission configuration as the above-mentioned RB configuration may be partial BWPs that divide a large bandwidth of a cell into multiple BWPs. For example: in the NR system, the network side bandwidth of one cell is large, such as up to 400MHz, and therefore, the concept of BWP is introduced in the NR system, and the large bandwidth of a cell is divided into a plurality of BWPs.

Through the steps, the data of a plurality of logical channels corresponding to the RB can be transmitted on different BWPs, so that the resource utilization rate in the cell is improved. In addition, for the condition that the terminal only has one large-bandwidth cell available, the method can be used for repeated transmission, so that the gains of the repeated transmission for reducing time delay and improving reliability are obtained, and the service requirements of high-reliability and Low-Latency Communications (URLLC) are met.

As an optional implementation, the repeated transmission configuration includes:

The duplicate transmission configuration includes a correspondence relationship between a plurality of LCIDs and a BWP index (BWP index), so that different BWPs can be configured for different logical channels through the correspondence relationship. In this embodiment, it may be implemented that the network side device indicates one or more BWPs corresponding to different logical channels in the configuration signaling. In addition, the above repeated transmission configuration may include configuration of an uplink logical channel and/or configuration of a downlink logical channel.

For example: in an RRC configuration signaling for PDCP repeated transmission, the network side equipment configures two or more RLC entities corresponding to one RB and a logical channel number corresponding to each RLC entity, and configures one or more BWP indexes corresponding to each repeated transmission logical channel.

The terminal receives the RRC configuration signaling, determines the PDCP repeated transmission configuration of the RB, wherein the configuration comprises the corresponding RLC entity and the logical channel number, and determines the BWP which can be transmitted by the logical channel data through the BWP index corresponding to each repeated transmission logical channel number.

In addition, in the above embodiment, through the correspondence between the LCID and the BWP group identity (BWPG ID), the BWP group identity corresponding to different logical channels in the duplicate transmission configuration can be indicated, and since only the BWP group identity needs to be carried in the duplicate transmission configuration, the transmission overhead can be reduced. In this embodiment, the network-side device may first group the BWP, assign a BWP group ID, and then associate the LCID with the BWP group ID (BWPG ID).

For example: the network side device groups the BWPs in the RRC signaling for configuring the BWP of the terminal, and distributes different BWPs to different BWP groups, wherein each BWP group comprises one or more BWPs. Then, in the RRC configuration signaling for PDCP retransmission, two or more RLC entities corresponding to one RB and a logical channel number corresponding to each RLC entity are configured, and a BWP group ID corresponding to each retransmission logical channel is configured.

The terminal receives the RRC signaling configured by the BWP and determines the mapping relation between the BWP and the BWP group; and receiving RRC configuration signaling of PDCP repeated transmission, determining the PDCP repeated transmission configuration of the RB, including the corresponding RLC entity and the logical channel number, and the corresponding BWP group ID, and determining the BWP corresponding to each repeated transmission logical channel number through the mapping relation of the BWP group ID and the BWP.

As an optional implementation manner, the plurality of RLC entities includes a main RLC entity, and the RB is transmitted through the main RLC entity when the repeated transmission is not activated.

In this embodiment, it can be realized that in the repeat transmission configuration, one RB may be mapped to two or more RLC entities, where one RLC entity is defined as a primary RLC entity, so that when the repeat transmission is not activated, the RB entity is transmitted only through the primary RLC entity and a corresponding logical channel without performing configuration again, thereby reducing implementation complexity.

As an optional implementation, the duplicate transmission configuration is activated or deactivated by:

RRC signaling activation or RRC signaling deactivation, wherein the RRC signaling is the configuration signaling.

It should be noted that, the RRC signaling activation or the RRC signaling deactivation may be understood that different RRC signaling is used for activation and deactivation, but both the activated RRC signaling and the deactivated RRC signaling may be the configuration signaling, that is, the configuration signaling may be used for activating or deactivating the repeated transmission configuration in addition to the repeated transmission configuration, so that no other signaling needs to be transmitted during activation or deactivation, thereby reducing transmission overhead.

In an implementation, the RRC signaling indicates an active BWP in the retransmission configuration, where if a plurality of active logical channels exist in the logical channel corresponding to the RB, the RB is activated for the retransmission, and the active BWP exists in the BWP corresponding to the active logical channel; and if an inactive logical channel exists in the corresponding logical channel in the RB, the inactive logical channel cannot be transmitted.

In this implementation, the RRC signaling may indicate active BWP in the duplicate transmission configuration, for example: when the above-mentioned repeated transmission configuration includes the correspondence between the RLC entity and the BWP group, the RRC signaling may indicate that the BWP group is activated. If the network-side device indicates an active BWP in the BWP group, it indicates that the logical channel corresponding to the BWP group can be transmitted on the active BWP, and also indicates that the repeated transmission of the logical channel is active.

In addition, the inactive logical channel may be a logical channel for which the corresponding at least one BWP (or BWP group) does not have the active BWP configuration, for example: none of the activated BWPs in the duplicate transmission configuration indicated by the RRC signaling corresponds to a BWP in at least one BWP (or BWP group). This can realize that if the BWP group corresponding to a logical channel does not have an active BWP configuration, it indicates that the logical channel cannot be transmitted, i.e. the PDCP layer will not deliver the duplicate packet to the RLC entity for transmission. Through the above RRC signaling, it may be implemented to activate a part of logical channels in a plurality of logical channels corresponding to the RB, and not activate or deactivate another part of logical channels, and of course, may also activate all logical channels corresponding to the RB, so as to improve the flexibility of repeated transmission.

For example: the network side device may configure and activate BWP simultaneously in RRC signaling configuring the correspondence between the RLC entity and the BWP group.

The terminal receives RRC signaling configured by PDCP (packet data convergence protocol) repeated transmission of network side equipment, determines the corresponding relation between a repeated transmission logical channel and a BWP (BWP group), and if the BWP group corresponding to one logical channel has an activated BWP, the terminal indicates that the repeated transmission logical channel is activated, namely the terminal can transmit repeated transmission data in the BWP group; if no BWP configuration is activated in the BWP group corresponding to a logical channel, it indicates that the duplicate transmission logical channel is not activated, and the PDCP layer will not deliver the duplicate transmission data to the logical channel.

In another implementation, the RRC signaling indicates whether the RB activates repeated transmission, if activated, all logical channels corresponding to the RB are to be transmitted, and if not activated, data of the RB is only transmitted on the primary logical channel.

The primary logical channel may refer to a primary logical channel corresponding to a primary RLC entity of the RB, or may be understood as a logical channel in which the primary logical channel is active in an active state.

In this implementation, the repeated transmission of all logical channels of the RB is activated or deactivated through the RRC signaling. Preferably, 1bit may be used to indicate that the RB retransmission initial state is active or inactive, if the RB retransmission initial state is inactive, only the primary RLC entity has data to transmit, and the BWP groups corresponding to other RLC entities (and their logical channels) do not transmit duplicate data packets even if there is active BWP. The repeated transmission of the RB is directly activated or deactivated through the RRC signaling, so that the overhead of the RRC signaling can be saved, and the complexity of implementation is reduced.

For example: the network side device may indicate whether PDCP duplicate transmission is active or not in a PDCP duplicate transmission configuration command.

The terminal receives the PDCP repeated transmission configuration command, if the RRC signaling indicates that the PDCP repeated transmission is activated, all configured repeated transmission logic channels corresponding to the RB are activated, namely, the repeated transmission can be carried out in the corresponding BWP group; if the RRC signaling indicates that the PDCP repeated transmission is not activated, the transmission state of the RB is that the transmission can only be carried out on the main RLC entity and the corresponding logical channel. Subsequent activation deactivation signaling may change this initial state.

In another implementation manner, the RRC signaling respectively indicates whether a logical channel corresponding to the RB activates transmission, indicates that the activated logical channel can perform transmission, and indicates that an inactive logical channel cannot perform transmission.

The above-mentioned indication that the activated logical channel is capable of transmission may be understood as that the terminal may perform transmission on the logical channel.

In this implementation, the RRC signaling is activated or deactivated in units of logical channels, that is, the RRC signaling may activate some or all of the logical channels in the plurality of logical channels corresponding to the RBs, so as to transmit the logical channels indicated to be activated. Taking the correspondence relationship between the logical channel and the BWP group as an example, the implementation may enable activating repeat transmission for a repeat transmission logical channel, that is, the BWP group, and the network side device may simultaneously indicate whether the group transmission is activated when configuring the correspondence relationship between the logical channel and the BWP group, and if not, the network side device does not transmit the data of the RLC entity even if the BWP group has activated BWP, that is, the PDCP layer does not deliver the duplicate packet to the RLC entity. In this implementation, the flexibility of repetitive transmission can be improved.

For example: the network side device may indicate whether the logical channel activates transmission when configuring the correspondence between the logical channel and the BWP group in the PDCP duplicate transmission configuration command.

The terminal receives the PDCP retransmission configuration command, and if it is configured not to be activated, even if the BWP group has an activated BWP, the terminal does not perform data transmission of the logical channel, i.e., the PDCP layer does not deliver duplicate packets to the RLC entity.

MAC signaling activation or MAC signaling deactivation.

It should be noted that, the MAC signaling activation or MAC signaling deactivation may be understood as that different MAC signaling is used for activation and deactivation. Preferably, the MAC signaling may be a MAC Control Element (CE), that is, a MAC CE.

In one implementation, the MAC signaling activates or deactivates the repeated transmission of a specific RB.

Wherein the specific RB may be an RB in the above-described repeat transmission configuration.

In this implementation, the activation or deactivation of the repeated transmission of a specific RB through MAC signaling may be implemented, where the activation indicates activation of all repeated transmission paths, that is, the repeated transmission of all RLC entities and logical channels corresponding to the RB; deactivation means that transmission is only possible on the primary RLC entity, i.e. no duplicate packets at all.

In another implementation, the MAC signaling activates or deactivates a specific duplicate transmission path, where the specific duplicate transmission path is one or more duplicate transmission paths in the duplicate transmission configuration, and the duplicate transmission path includes a logical channel and/or BWP.

In this implementation, MAC signaling may be implemented to activate or deactivate a specific duplicate transmission path, such as duplicate transmission of RLC entities and logical channels, and/or duplicate transmission of BWP, thereby improving the flexibility of duplicate transmission.

For example: the network side equipment transmits a MAC CE which indicates the activation or deactivation of the repeated transmission of a specific RB (MAC CE format 1); or the MAC CE indicates activation or deactivation of a specific repeated transmission path (MAC CE format 2), i.e., repeated transmission of a specific logical channel.

The terminal receives the activated or deactivated MAC CE sent by the network side equipment, and if the MAC CE format 1 is adopted, the activation indicates the activation of all repeated transmission paths, namely the repeated transmission of all RLC entities and logical channels corresponding to the RB is activated; deactivation means that the RB can only be transmitted on the primary RLC entity, i.e. there is no duplicate packet transmission at all. If MAC CE format 2 is adopted, the terminal determines to activate or deactivate a specific repeated transmission path according to the indication of the MAC CE, and the PDCP layer does not deliver the repeated transmission packet to the deactivated logical channel.

physical layer signaling activation or physical layer signaling deactivation.

It should be noted that, the above-mentioned physical layer signaling activation or physical layer signaling deactivation may be understood as that the activation and deactivation are implemented by using different physical layer signaling. Preferably, the Physical layer signaling is a Control message carried by a Physical Downlink Control Channel (PDCCH).

In one implementation, the physical layer signaling activates or deactivates retransmission of the terminal.

The aforementioned repeated transmission of the terminal may refer to all repeated transmissions of the terminal, and in this implementation, all repeated transmissions of the terminal may be activated or deactivated, that is, all RBs of the terminal are simultaneously activated or deactivated.

It should be noted that, in the embodiment, the repeated transmission of the terminal may be temporarily suspended without changing the RRC configuration and/or the activation state specified by the MAC layer, so as to improve the flexibility of the repeated transmission. For example: the terminal may be deactivated from repeated transmission when a partial BWP group is not available due to deterioration of the channel environment.

In another implementation, the physical layer signaling activates or deactivates repeat transmission of a specific BWP or a specific BWP group bearer.

In this implementation, it may be implemented to activate or deactivate the duplicate transmission that may be carried by the partial BWP or the partial BWP group through physical layer signaling, so that the logical channel for all the duplicate transmission RBs corresponding to the BWP group is valid.

For example: and the network side equipment sends a PDCCH which carries a control message to indicate the repeated transmission activation or deactivation. Wherein, the Control message may be Downlink Control Information (DCI), DCI format 1, which activates or deactivates the retransmission of the terminal; or DCI format 2: indicating the activation or deactivation of duplicate transmissions that the partial BWP or BWP group may carry.

And the terminal receives the PDCCH command sent by the network side equipment. If DCI format 1 is adopted, when activation is indicated, the terminal determines to activate the repeated transmission of all RBs which are configured for the terminal and activated by the high-level signaling indication, and when deactivation is indicated, the terminal deactivates the repeated transmission of all RBs configured with PDCP repeated transmission; if Format 2 is adopted, a retransmission logical channel specifying all of the retransmission RBs corresponding to the BWP or BWP group is activated or deactivated for PDCCH indication.

It should be noted that, in the above-described multiple activation or deactivation embodiments of repeated transmission, step 202 needs to perform transmission in combination with the activation state of the terminal, the logical channel, the BWP, and the like when performing repeated transmission.

As an optional implementation manner, the performing, by the terminal, a repeat transmission operation according to the repeat transmission configuration includes:

if a specific BWP group in the duplicate transmission configuration has multiple active BWPs, transmitting data of a logical channel corresponding to the specific BWP group on one or more of the multiple active BWPs; or

If the active BWP change occurs in a BWP group in the retransmission configuration, HARQ retransmission is performed on the newly activated BWP in the BWP group for the data of the logical channel corresponding to the BWP group; or

In this implementation, if there are multiple active BWPs in the BWP group corresponding to the logical channel, part or all of the active BWPs may be selected for transmission, so as to improve the flexibility of transmission and the transmission performance. For example: when one BWP group has multiple BWPs active, the data of the logical channel may be transmitted on one or more BWPs according to scheduling or resource pre-configuration.

In addition, when the active BWP change occurs in the BWP corresponding to a certain logical channel, HARQ retransmission is performed on the newly activated BWP, thereby improving transmission performance. For example: if active BWP change occurs in the BWP group, the data of the logical channel may be HARQ retransmitted on the newly activated BWP.

In addition, if the activation is deactivated, but there is RLC data which is not successfully transmitted, the RLC data can be transmitted on any one or more activated BWPs, and at this time, the BWP group is not limited, so that the transmission performance is improved. For example: if the repeated transmission is deactivated, the RLC entity and logical channel of the repeated transmission will not have new data, but the RLC data which is not successfully transmitted can be transmitted on any active BWP (without being limited by the BWP group).

In the embodiment of the present invention, the terminal receives a configuration signaling sent by a network side, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: the RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different partial bandwidth BWPs; and the terminal performs repeated transmission operation according to the repeated transmission configuration. Therefore, the data of a plurality of logical channels corresponding to the RB can be transmitted on different BWPs, and the resource utilization rate in the cell is improved.

Referring to fig. 4, fig. 4 is a flowchart of another retransmission method according to an embodiment of the present invention, as shown in fig. 4, including the following steps:

401. the method comprises the following steps that network side equipment sends configuration signaling to a terminal, wherein the configuration signaling comprises repeated transmission configuration, and the repeated transmission configuration comprises the following steps: one RB is mapped to multiple RLC entities, and different RLC entities configure different logical channels, and different logical channels correspond to different BWPs.

Optionally, the repeated transmission configuration includes:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

It should be noted that, this embodiment is used as an implementation of the network side device corresponding to the embodiment shown in fig. 2, and specific implementation thereof may refer to the relevant description of the embodiment shown in fig. 2, so that, in order to avoid repeated description, the embodiment is not described again, and the same beneficial effects may also be achieved.

Referring to fig. 5, fig. 5 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 5, a terminal 500 includes:

a receiving module 501, configured to receive a configuration signaling sent by a network side, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different BWPs;

a transmission module 502, configured to perform a repeat transmission operation according to the repeat transmission configuration.

Optionally, the repeated transmission configuration includes:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

Optionally, the transmission module 502 is configured to, if a specific BWP group in the duplicate transmission configuration has multiple active BWPs, transmit data of a logical channel corresponding to the specific BWP group on one or more of the multiple active BWPs; or

The transmission module 502 is configured to, if a BWP group in the repeat transmission configuration is changed by an active BWP, perform HARQ retransmission on the newly activated BWP in the BWP group for data of the logical channel corresponding to the BWP group; or

The transmission module 502 is configured to transmit RLC data on any one or more active BWPs of the terminal if the duplicate transmission in the duplicate transmission configuration is deactivated but there is RLC data that has not been successfully transmitted.

It should be noted that, in this embodiment, the terminal 500 may be any implementation manner of the method embodiment in the present invention, and any implementation manner of the terminal in the method embodiment in the present invention may be implemented by the terminal 500 in this embodiment, and achieve the same beneficial effects, and details are not described here again.

Referring to fig. 6, fig. 6 is a structural diagram of a network side device according to an embodiment of the present invention, and as shown in fig. 6, the network side device 600 includes:

a sending module 601, configured to send a configuration signaling to a terminal, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to multiple RLC entities, and different RLC entities configure different logical channels, and different logical channels correspond to different BWPs.

Optionally, the repeated transmission configuration includes:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

It should be noted that, in this embodiment, the network-side device 600 may be a network-side device according to any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment of the present invention may be implemented by the network-side device 600 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Referring to fig. 7, fig. 7 is a structural diagram of another terminal according to an embodiment of the present invention, and as shown in fig. 7, the terminal includes: a transceiver 710, a memory 720, a processor 700, and a program stored on the memory 720 and executable on the processor 1200, wherein:

the transceiver 710 is configured to receive a configuration signaling sent by a network side, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to a plurality of RLC entities, different RLC entities configure different logical channels, and different logical channels correspond to different BWPs;

The transceiver 710 may be used for receiving and transmitting data under the control of the processor 700.

In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

It should be noted that the memory 720 is not limited to being on the terminal, and the memory 720 and the processor 700 may be separated in different geographical locations.

Optionally, the repeated transmission configuration includes:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

If the active BWP change occurs in a BWP group in the repeat transmission configuration, performing HARQ retransmission on the data of the logical channel corresponding to the BWP group on the newly activated BWP in the BWP group; or

It should be noted that, in this embodiment, the terminal may be a terminal in any implementation manner in the method embodiment of the present invention, and any implementation manner of the terminal in the method embodiment of the present invention may be implemented by the terminal in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Referring to fig. 8, fig. 8 is a structural diagram of another network-side device according to an embodiment of the present invention, and as shown in fig. 8, the network-side device includes: a transceiver 810, a memory 820, a processor 800, and a program stored on the memory 820 and executable on the processor, wherein:

the transceiver 810 is configured to send a configuration signaling to a terminal, where the configuration signaling includes a repeated transmission configuration, and the repeated transmission configuration includes: one RB is mapped to multiple RLC entities, and different RLC entities configure different logical channels, and different logical channels correspond to different BWPs.

Transceiver 810 may be used, among other things, to receive and transmit data under the control of processor 800.

In fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

It should be noted that the memory 820 is not limited to be on a network-side device, and the memory 820 and the processor 800 may be separated in different geographical locations.

Optionally, the repeated transmission configuration includes:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

It should be noted that, in this embodiment, the network-side device may be a network-side device in any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment of the present invention may be implemented by the network-side device in this embodiment, so as to achieve the same beneficial effects, and details are not described here.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the method for repeatedly transmitting on the terminal side provided in the embodiment of the present invention, or the computer program is executed by the processor to implement the steps in the method for repeatedly transmitting on the network side device side provided in the embodiment of the present invention.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus 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 other divisions may be realized in practice, for example, a plurality of 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 be in an electrical, mechanical or other form.

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

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the processing method of the information data block according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of repeated transmission, comprising:

a terminal receives a configuration signaling sent by a network side, wherein the configuration signaling comprises repeated transmission configuration, and the repeated transmission configuration comprises: one radio bearer RB is mapped to a plurality of Radio Link Control (RLC) entities, different RLC entities configure different logical channels, and different logical channels correspond to different partial bandwidth BWPs;

2. The method of claim 1, wherein the repetitive transmission configuration comprises:

the correspondence between the logical channel number LCID and the BWP index, wherein one LCID corresponds to one or more BWP indexes; or

3. The method of claim 1, wherein the plurality of RLC entities comprises a primary RLC entity, and wherein the RB is transmitted by the primary RLC entity in the absence of repeated transmission activity.

4. The method of claim 1, wherein the repetitive transmission configuration is activated or deactivated by:

media Access Control (MAC) signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

5. The method of claim 4, wherein the RRC signaling indicates an active BWP in the duplicate transmission configuration, wherein the RB duplicate transmission is active if a plurality of active logical channels exist in the logical channel to which the RB corresponds, and wherein the active BWP exists in the BWP to which the active logical channels correspond; if an inactive logical channel exists in the corresponding logical channel in the RB, the inactive logical channel cannot transmit; or

6. The method according to any of claims 1 to 5, wherein the terminal performs a repeat transmission operation according to the repeat transmission configuration, comprising:

7. A method of repeated transmission, comprising:

8. The method of claim 7, wherein the repetitive transmission configuration comprises:

9. The method of claim 7, wherein the plurality of RLC entities comprises a primary RLC entity, and wherein the RB is transmitted by the primary RLC entity in the absence of repeated transmission activity.

10. The method of claim 7, wherein the repetitive transmission configuration is activated or deactivated by:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

11. The method of claim 10, wherein the RRC signaling indicates an active BWP in the duplicate transmission configuration, wherein if there are multiple active logical channels in the logical channel corresponding to the RB, indicating that the RB is active for duplicate transmission, there is an active BWP in the BWP corresponding to the active logical channel; if an inactive logical channel exists in the corresponding logical channel in the RB, the inactive logical channel cannot transmit; or

12. A terminal, comprising:

13. The terminal of claim 12, wherein the repetitive transmission configuration is activated or deactivated by:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

14. The terminal of claim 12 or 13, wherein the transmission module is configured to transmit data of a logical channel corresponding to a specific BWP group on one or more active BWPs of the plurality of active BWPs if the specific BWP group has multiple active BWPs in the duplicate transmission configuration; or

The transmission module is configured to, if a BWP group in the repeat transmission configuration changes due to activation of a BWP, perform HARQ retransmission on data of a logical channel corresponding to the BWP group on a newly activated BWP in the BWP group; or

The transmission module is configured to transmit RLC data on any one or more active BWPs of the terminal if the repeated transmission in the repeated transmission configuration is deactivated but there is RLC data that has not been successfully transmitted.

15. A network-side device, comprising:

16. The network-side device of claim 15, wherein the duplicate transmission configuration is activated or deactivated by:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

17. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

18. The terminal of claim 17, wherein the repetitive transmission configuration comprises:

19. The terminal of claim 17, wherein the plurality of RLC entities includes a primary RLC entity, and wherein the RB is transmitted through the primary RLC entity in the case where repeated transmission is not active.

20. The terminal of claim 17, wherein the repetitive transmission configuration is activated or deactivated by:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

21. The terminal of claim 20, wherein the RRC signaling indicates an active BWP in the duplicate transmission configuration, wherein if there are multiple active logical channels in the logical channel corresponding to the RB, indicating that the RB is active for duplicate transmission, there is an active BWP in the BWP corresponding to the active logical channel; if an inactive logical channel exists in the corresponding logical channel in the RB, the inactive logical channel cannot transmit; or

22. The terminal according to any of claims 17 to 21, wherein said performing a repeat transmission operation according to the repeat transmission configuration comprises:

23. A network-side device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

24. The network-side device of claim 23, wherein the duplicate transmission configuration comprises:

25. The network-side device of claim 23, wherein the plurality of RLC entities comprises a primary RLC entity, and wherein the RB is transmitted via the primary RLC entity in the case that repeated transmission is not active.

26. The network-side device of claim 23, wherein the duplicate transmission configuration is activated or deactivated by:

MAC signaling activation or MAC signaling deactivation;

physical layer signaling activation or physical layer signaling deactivation.

27. The network-side device of claim 26, wherein the RRC signaling indicates an active BWP in the duplicate transmission configuration, wherein if a plurality of active logical channels exist in the logical channel corresponding to the RB, the RB is indicated to be active for duplicate transmission, and the active BWP exists in the BWP corresponding to the active logical channel; if an inactive logical channel exists in the corresponding logical channel in the RB, the inactive logical channel cannot transmit; or

28. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps in the repeat transmission method as claimed in any one of claims 1 to 6, or which program, when being executed by a processor, carries out the steps in the repeat transmission method as claimed in any one of claims 7 to 11.