CN114172625A

CN114172625A - Method, device, equipment and medium for indicating available cell restriction of logical channel

Info

Publication number: CN114172625A
Application number: CN202010956459.4A
Authority: CN
Inventors: 谌丽; 皮埃尔
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2022-03-11
Anticipated expiration: 2040-09-11
Also published as: CN114172625B

Abstract

The invention discloses a method, a device, equipment and a storage medium for indicating the limitation of a logical channel available cell, wherein the method comprises the following steps: and the base station sends an indication, wherein the indication is indicated by using the MAC CE and indicates whether to enable the RRC signaling to limit the available logical channel cell configured for the logical channel corresponding to the RB or the RLC entity after activating or deactivating the PDCP repeated transmission of the RB or the RLC entity corresponding to the radio bearer. By adopting the invention, the problem of resource waste caused by that some cells can not be used for activating the RLC entity to transmit data after the CA in the cell group cancels the repeated transmission can be avoided.

Description

Method, device, equipment and medium for indicating available cell restriction of logical channel

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a device, and a medium for indicating a limitation of an available cell of a logical channel.

Background

URLLC (Ultra-high reliability and Ultra-Low time delay, Ultra-Reliable and Low Latency Communications) is an important scene supported by 5G, and because the Ultra-high reliability and Low Latency Communications have higher requirements on time delay and reliability, a solution provided by 3GPP at present is to introduce a repeated transmission mechanism, namely, a Protocol Data Unit (Protocol Data Unit) of the same PDCP (Packet Data Convergence Protocol) layer PDU is transmitted through a plurality of paths, the transmission reliability is improved through a multipath transmission gain, and the transmission time delay is reduced.

The defects of the prior art are as follows: is not beneficial to the effective use of resources under the cell group.

Disclosure of Invention

The invention provides a method, a device, equipment and a storage medium for indicating the limitation of an available cell of a logical channel, which are used for solving the problem that the effective use of resources under a cell group is not facilitated under the repeated transmission configuration of a PDCP.

The invention provides the following technical scheme:

a method for indicating the limitation of the available cells of logical channels comprises the following steps:

the base station sends an indication, wherein the indication is indicated by the base station by using a media access control (MAC CE) unit, and indicates whether to enable the RRC signaling to limit the available cell of the logical channel configured for the logical channel corresponding to the RB or the RLC entity after activating or deactivating the PDCP repeat transmission of the RB or the RLC entity corresponding to the radio bearer.

In an implementation, the MAC CE indicates one or a combination of the following:

after indicating that PDCP repeated transmission of a specific RB is activated or deactivated, enabling or not enabling all logic channel available cell limits corresponding to the RB configured by RRC signaling; alternatively, the first and second electrodes may be,

after indicating that PDCP repeated transmission of a specific RB is activated or deactivated, enabling or not enabling the limitation of the usable cells of the part of the logical channels corresponding to the RB configured by RRC signaling; alternatively, the first and second electrodes may be,

and after indicating activation or deactivation of PDCP repeated transmission of the RLC entity under the specific RB, enabling or not enabling the available cell limit of the logical channel corresponding to the RLC entity configured by RRC signaling.

In an implementation, the base station using the MAC CE indication includes:

after the base station uses the MAC CE to indicate the PDCP repeated transmission to cancel, whether the limitation of the logic channel available cell configured by the RRC signaling is canceled or not is judged, and the indication is effective to all RBs; or the like, or, alternatively,

and after the base station uses the MAC CE to indicate that the PDCP repeated transmission of the specific RB is cancelled, whether the limitation of the usable cell of the logic channel corresponding to the RB configured by the RRC signaling is cancelled or not is judged.

In an implementation, the MAC CE payload part length of the MAC CE is 0 and only includes a MAC subheader, wherein the MAC subheader format is to use a specific LCID1 value or a specific eLCID + LCID1 value to indicate to cancel the logical channel available cell restriction; using a specific LCID2 value or a specific LCID + LCID2 value, indicates that the logical channel available cell restriction is not cancelled.

In implementation, the MAC CE includes an RB ID and an RLC entity indication corresponding to the RB, and the MAC CE indicates whether to cancel the logical channel available cell limit configured by the RRC signaling after activating or deactivating the RB and/or the RLC entity to participate in the repeated transmission and deactivating the PDCP repeated transmission.

In implementation, the RB ID and RLC entity indication part of the MAC CE is used to indicate that RBs are activated or deactivated and/or that an RLC entity participates in repeated transmission, and bit in the MAC subheader corresponding to the MAC CE is used to indicate whether to cancel logical channel available cell restriction.

In the implementation, the cancellation of the available cell restriction of the logical channel configured by the RRC signaling includes:

after CA repeated transmission is deactivated, the limitation of the available cell of the corresponding logical channel is cancelled aiming at the RLC entity still activated in the MAC entity; or the like, or, alternatively,

for the RLC entities which are deactivated to carry out repeated transmission, the limitation of the usable cells of the corresponding logical channels is cancelled; or the like, or, alternatively,

and when the DRB indicated by the MAC CE deactivates the repeated transmission, canceling the limitation of the available cell of the corresponding logical channel aiming at the RLC entity which is still activated.

In the implementation, the MAC CE includes a bitmap, bits in the bitmap correspond to RBs configured for PDCP retransmission, and the MAC CE indicates whether to cancel the available cell restriction of the logical channel configured for RRC signaling after activating or deactivating the RBs and/or RLC entity to participate in retransmission, while indicating that the PDCP retransmission is deactivated.

In implementation, the bitmap of the MAC CE is used to indicate the activation or deactivation of the repeated transmission of the RB, and the MAC CE indicates whether to cancel the logical channel available cell restriction corresponding to the bit in the MAC subheader.

and for the activated RLC entities corresponding to the RBs which are deactivated to be repeatedly transmitted, canceling the cell use limitation of the corresponding logical channels.

In implementation, the MAC CE includes an RB number, an RLC entity indication, and a cell restriction indication bit, which indicates whether to cancel the available cell restriction of the logical channel configured by the RRC signaling after deactivating part of the RLC entity.

In an implementation, the MAC CE is indicated by a MAC subheader with a MAC CE length of 0, where the MAC subheader format is indicated by using a specific LCID value or using a specific eLCID + LCID value, using an LCID or an eLCID + LCID value.

In implementation, the cell restriction indication bit of the MAC CE indicates:

after CA repeated transmission is deactivated, whether the limitation of the available cell of the corresponding logical channel is cancelled aiming at the RLC entity still activated in the MAC entity; or the like, or, alternatively,

whether to cancel the limitation of the available cell of the corresponding logical channel aiming at the RLC entity which deactivates the repeated transmission; or the like, or, alternatively,

and when the DRB indicated by the MAC CE deactivates the repeated transmission, whether the limitation of the available cell of the corresponding logical channel is cancelled aiming at the RLC entity which is still activated.

the terminal receives an indication of a base station, wherein the indication is indicated by the base station using an MAC CE, and indicates whether to enable RRC signaling to be used for limiting a logic channel available cell configured for a logic channel corresponding to an RB or an RLC entity after activating or deactivating PDCP repeated transmission of the RB or the RLC entity corresponding to the radio bearer;

and determining whether to enable the limitation of the available logical channel cells configured for the logical channel corresponding to the RB or RLC entity by RRC signaling according to the indication.

and after the activation or deactivation of the logical channel of the PDCP repeated transmission of the RLC entity under the specific RB is indicated, enabling or not enabling the available cell limit of the logical channel corresponding to the RLC entity configured by the RRC signaling.

In an implementation, receiving the base station indication includes:

receiving a base station instruction, wherein the instruction is indicated by the base station through the MAC CE, and indicates whether the limitation of a logical channel available cell configured by RRC signaling is cancelled or not after the PDCP repeated transmission of all RBs is cancelled, and the instruction is effective to all RBs; or the like, or, alternatively,

and receiving a base station instruction, wherein the instruction is indicated by the base station through the MAC CE, and whether the limitation of the available cell of the logical channel corresponding to the RB configured by the RRC signaling is cancelled or not is cancelled after the PDCP repeated transmission of the specific RB is cancelled.

In implementation, a base station indication is received, where the indication is that the MAC CE includes an RB ID and an RLC entity indication corresponding to the RB, and the MAC CE indicates whether to cancel the logical channel available cell restriction configured by the RRC signaling after activating or deactivating the RB and/or the RLC entity to participate in the repeated transmission and deactivating the PDCP repeated transmission.

In the implementation, a base station instruction is received, where the instruction is that the MAC CE includes a bitmap, a bit in the bitmap corresponds to an RB configured with PDCP retransmission, and the MAC CE instructs, after activating or deactivating the RB and/or an RLC entity to participate in retransmission, whether to cancel the limitation of the logical channel available cell configured with RRC signaling after deactivating PDCP retransmission.

In implementation, the cell restriction indication bit of the MAC CE indicates:

A base station, comprising:

a processor for reading the program in the memory, performing the following processes:

the base station sends an indication, wherein the indication is indicated by the base station by using the MAC CE, and indicates whether to enable the RRC signaling to limit the available logical channel configured for the logical channel corresponding to the RB or the RLC entity after activating or deactivating the PDCP repeated transmission of the RB or the RLC entity corresponding to the radio bearer;

a transceiver for receiving and transmitting data under the control of the processor.

In an implementation, using the MAC CE indication includes:

after the MAC CE is used for indicating that the PDCP repeated transmission is cancelled, whether the limitation of the usable cell of the logic channel configured by the RRC signaling is cancelled or not is judged, and the indication is effective to all RBs; or the like, or, alternatively,

and after the MAC CE is used for indicating that the PDCP repeated transmission of the specific RB is cancelled, whether the limitation of the usable cell of the logic channel corresponding to the RB configured by the RRC signaling is cancelled or not is judged.

In implementation, the cell restriction indication bit of the MAC CE indicates:

A logical channel available cell restriction indication apparatus, comprising:

an indication module, configured to send, by the base station, an indication that the base station uses the MAC CE to indicate whether to enable the RRC signaling to limit the available cell of the logical channel configured for the logical channel corresponding to the RB or RLC entity after activating or deactivating PDCP retransmission of the RB or RLC entity corresponding to the radio bearer.

A terminal, comprising:

receiving an indication of a base station, wherein the indication is indicated by the base station through an MAC CE (media access control entity), and indicates whether to enable a logical channel available cell limit configured for a logical channel corresponding to a Radio Bearer (RB) or a radio bearer (RLC) entity by RRC signaling after activating or deactivating PDCP (packet data convergence protocol) repeat transmission of the RB or the RLC entity in the radio bearer;

determining whether to enable the RRC signaling to be used for the available cell restriction of the logical channel configured for the logical channel corresponding to the RB or RLC entity according to the indication;

In an implementation, receiving the base station indication includes:

In the implementation, a base station indication is received, the MAC CE includes an RB ID and an RLC entity indication corresponding to the RB, and the MAC CE indicates whether to cancel the limitation of the logical channel available cell configured by the RRC signaling after activating or deactivating the RB and/or the RLC entity to participate in the repeated transmission and deactivating the PDCP repeated transmission.

In implementation, the cell restriction indication bit of the MAC CE indicates:

A logical channel available cell restriction indication apparatus, comprising:

a receiving module, configured to receive an indication of a base station, where the indication is indicated by the base station using an MAC CE, and indicates whether to enable RRC signaling to limit an available cell of a logical channel configured for a logical channel corresponding to an RB or an RLC entity after activating or deactivating PDCP retransmission of the RB or the RLC entity corresponding to the radio bearer;

and the determining module is used for determining whether to enable the limitation of the available cell of the logical channel configured for the logical channel corresponding to the RB or RLC entity by the RRC signaling according to the indication.

A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned logical channel available cell restriction indication method.

The invention has the following beneficial effects:

in the technical scheme provided by the embodiment of the invention, after the base station uses the MAC CE to indicate activation or deactivation of PDCP repeated transmission, whether the available cell limitation of a logic channel configured by RRC signaling is enabled or not is judged; under the condition of activating different RLC entities, the base station can accurately indicate the activated RLC entities to correspond to the available cells of the logical channels, so that the data of the logical channels can be transmitted in the indicated cells under the condition of repeatedly transmitting and activating different PDCP data so as to achieve effective use of transmission resources, and the problem of resource waste caused by the fact that partial cells cannot be used for activating the RLC entities to transmit data after the repeated transmission of CA in a cell group is cancelled can be solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a diagram illustrating a repetitive transmission model under CA in an embodiment of the present invention;

FIG. 2 is a diagram illustrating a repetitive transmission model under DC in an embodiment of the present invention;

FIG. 3 is a diagram illustrating a PDCP repeat transmission configuration according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating repeated RLC activation or deactivation of a MAC-CE in an embodiment of the present invention;

FIG. 5 is a diagram of R/LCID/(eLCID) MAC sub-header according to an embodiment of the present invention;

fig. 6 is a schematic diagram of activating or deactivating a MAC CE for repeated transmission in an embodiment of the present invention;

fig. 7 is a schematic diagram of a MAC subheader (R/LCID/(etlcid) MAC subheader) corresponding to a MAC CE that is activated or deactivated by repeated transmission in the embodiment of the present invention;

FIG. 8 is a flowchart illustrating an embodiment of a method for indicating cell restriction on available logical channels of a base station;

fig. 9 is a flowchart illustrating an implementation of a cell restriction indication method for a logical channel available at a terminal side according to an embodiment of the present invention;

fig. 10 is a diagram illustrating a MAC CE format used in embodiment 2 of the present invention;

fig. 11 is a schematic diagram of a MAC CE subheader format used in embodiment 3 of the present invention;

fig. 12 is a diagram illustrating a MAC CE subheader format used in embodiment 4 of the present invention;

fig. 13 is a schematic diagram of a MAC CE format used in embodiment 5 of the present invention;

FIG. 14 is a diagram illustrating a base station structure according to an embodiment of the present invention;

fig. 15 is a schematic diagram of a terminal structure in the embodiment of the present invention.

Detailed Description

The inventor notices in the process of invention that:

fig. 1 is a schematic diagram of a retransmission model under CA, fig. 2 is a schematic diagram of a retransmission model under DC, and respective models of retransmission under CA (Carrier aggregation) and DC (Dual connectivity) are shown in the figure.

That is, one Radio bearer (corresponding to one PDCP entity) of the PDCP layer is transmitted through a plurality of LCHs (Logical channels) in an RLC (Radio Link Control) layer, and each Logical Channel corresponds to one RLC entity. For the CA model, a plurality of logical channels corresponding to a radio bearer for repeated transmission are processed by one MAC entity in a MAC (Medium Access Control) layer, and when the repeated transmission is activated, data from different RLC logical channels are mapped to different carriers (i.e., cells) for transmission, such as the LCH1 mapped to the cell1 transmission in fig. 1 and the LCH2 mapped to the cell2 transmission; after the repeated transmission is deactivated, the mapping relationship between the logical channel and the cell is cancelled, that is, after the repeated transmission is deactivated and the LCH2 is deactivated, the data of the LCH1 can be transmitted in the cell1 and the cell 2. For the DC model, a plurality of logical channels corresponding to duplicate RB (Radio Bearer) are respectively mapped to different MAC entities.

The existing scheme only supports the PDCP repeated transmission of at most two logical channels corresponding to one RB, and introduces a parameter allowedServingCells (allowed serving cell) for each logical channel corresponding to the RB configured with the PDCP repeated transmission, so as to limit the cells that can be used for data transmission of each logical channel when the PDCP repeated transmission is activated.

There is also a scheme of introducing PDCP retransmission for at most 4 logical channels corresponding to one RB, and fig. 3 is a schematic diagram of a PDCP retransmission configuration, where two PDCP retransmission configurations are shown in the figure.

Fig. 4 is a schematic diagram of repeated RLC Activation/Deactivation MAC CE (duplicate RLC Activation/Deactivation MAC CE), and as shown in the figure, the base station may use the MAC CE (control element) in fig. 4 to activate or deactivate an RLC entity corresponding to each RB of the terminal. The DRB ID (DRB identifier; DRB: Data Radio Bearer) refers to a DRB identifier configured by a base station through an RRC (Radio Resource Control) signaling, where RLCi corresponds to other RLC except the main RLC, and i is arranged in ascending order according to a sequence of a first MCG (Master Cell Group) and a second SCG (Secondary Cell Group) and a value of a Logical Channel number LCID (Logical Channel identifier). The primary RLC cannot be deactivated. RLCi of 0 indicates that the corresponding RLC and its corresponding logical channel are deactivated, and vice versa.

Fig. 5 is a schematic diagram of R/LCID/(etlci) MAC subheader, where the MAC subheader corresponding to the repeated RLC Activation or Deactivation MAC CE is shown in the figure, and for the duplicate RLC Activation/Deactivation MAC CE, the serial number corresponding to LCID + etlci (extended LCID) is 315. Here, "+" means that the subheader structure includes LCID + eLCID at the same time, and so on in other embodiments, which is not described again.

In addition, fig. 6 is a schematic diagram of activating or deactivating a MAC CE for retransmission, and also a PDCP (duplicate Activation/Deactivation MAC CE) for DRB introduced by the scheme is shown in fig. 6.

Fig. 7 is a schematic diagram of a MAC subheader (R/LCID/(etlcid) MAC subheader) corresponding to a MAC CE for activating or deactivating repeated transmission, where an LCID value for indicating the MAC CE for activating or deactivating the repeated transmission is 56.

In the prior art, after the PDCP retransmission is deactivated, the mapping relationship (configured by allowedServingCells) from the logical channel to the cell is cancelled. There is no special provision for PDCP repeat transmission with more than 2 RLC entities configured.

In the prior art, after PDCP retransmission is deactivated, a mapping relationship (configured by allowedServingCells) from a logical channel to a cell is cancelled, and during activation of PDCP retransmission, the mapping relationship (configured by allowedServingCells) from the logical channel to the cell is validated.

According to the existing scheme, under the condition that more than 2 RLC entities are configured for PDCP repeated transmission of one RB, the available cell limit of a corresponding logical channel of each RLC entity cannot be accurately controlled by the prior art. For example, in the case of not deactivating the PDCP repeat transmission, even if the CA repeat transmission in one cell group CG is cancelled, the activated RLC entity corresponding to the logical channel in the cell group CG can only use the cell configured by allowedServingCells, and cannot use other cells in the cell group, which is not favorable for effective use of resources in the cell group.

Based on this, the technical solution provided in the embodiment of the present invention will solve the problem of how to transmit data of different logical channels on a suitable component carrier under the PDCP duplicate transmission configuration.

The following describes embodiments of the present invention with reference to the drawings.

In the description process, the implementation of the UE and the base station will be described separately, and then an example of the implementation of the UE and the base station in cooperation will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such an explanation does not mean that the two must be implemented together or separately, and actually, when the UE and the base station are implemented separately, the UE and the base station solve the problems on the UE side and the base station side, respectively, and when the two are used in combination, a better technical effect is obtained.

Fig. 8 is a schematic flow chart of an implementation of a method for indicating cell restriction on a logical channel available at a base station, as shown in the figure, including:

step 801, the base station sends an indication, where the indication is indicated by the base station using the MAC CE, and indicates whether to enable the RRC signaling to limit the available cell of the logical channel configured for the logical channel corresponding to the RB or RLC entity after activating or deactivating PDCP retransmission of the RB or RLC entity corresponding to the radio bearer.

Fig. 9 is a schematic flow chart of an implementation of a method for indicating cell restriction on logical channels available on a terminal side, as shown in the figure, including:

step 901, the terminal receives an indication of the base station, where the indication is indicated by the base station using the MAC CE, and indicates whether to enable the RRC signaling to limit the available cell of the logical channel configured for the logical channel corresponding to the RB or RLC entity after activating or deactivating the PDCP retransmission of the RB or RLC entity corresponding to the radio bearer;

and step 902, determining whether to enable the limitation of the logical channel available cell configured by the RRC signaling for the logical channel corresponding to the RB or RLC entity according to the first indication.

Specifically, in the scheme, a MAC layer control signaling MAC CE is used to indicate whether to apply a mapping relationship between a logical channel configured by RRC signaling and a cell, that is, a cell limit available for the logical channel configured by RRC.

Specifically, the MAC CE may:

after indicating that PDCP repeated transmission of a specific RB is activated or deactivated, enabling or not enabling all the available cell limits of the logical channels corresponding to the RB; alternatively, the first and second electrodes may be,

after indicating that PDCP repeated transmission of a specific RB is activated or deactivated, enabling or not enabling the limitation of the usable cells of the partial logic channel corresponding to the RB; alternatively, the first and second electrodes may be,

and after the activation or deactivation of the repeatedly transmitted logical channel of the RLC entity under the specific RB is indicated, enabling or not enabling the available cell limit of the logical channel corresponding to the RLC entity.

The three modes can send appropriate MAC CE indications according to different requirements, and the purpose of canceling or not canceling the limitation of the specific logic channel available cells configured by RRC is achieved.

The following is an example.

The logical channel and cell mapping restriction MAC CE in

embodiments

1 and 2 is used in superposition with an original MAC CE activated or deactivated by repeated transmission or activated by repeated transmission RLC, that is, the MAC CE activated or deactivated by repeated transmission or activated or deactivated by repeated transmission RLC is used to activate or deactivate repeated transmission, and the logical channel and cell mapping restriction MAC CE is used to indicate whether the logical channel and cell mapping restriction is in effect.

Embodiments 3, 4, and 5 determine whether the limitation of the available cell of the logical channel corresponding to the RLC or the RB is valid while repeatedly transmitting RLC activation or deactivation or repeatedly transmitting activation or deactivation, and the MAC CE may be activated or deactivated without the repeated transmission in the prior art when the MAC CE is used.

Examples 3 and 5 are different designs for RLC and example 4 is a design for RB.

Example 1:

in this example, format 1 is used to indicate that the repeated transmission of all RBs is cancelled, with or without cancellation of the logical channel available cell restriction.

The base station uses the MAC CE to indicate whether to cancel the limitation of the logical channel available cell configured by the RRC signaling after the PDCP repeated transmission of all RBs is cancelled, and the indication is effective to all the RBs;

Specifically, only the MAC subheader (i.e. the MAC CE length is 0) is used, the format of the MAC subheader is as shown in fig. 5 (using a specific LCID1 value) or as shown in fig. 7 (using a specific LCID + LCID1 value), which indicates that the cell restriction available for the corresponding logical channel is cancelled after the cancellation of the repeated transmission, and the specific LCID2 value indicates that the cell restriction available for the corresponding logical channel is not cancelled after the cancellation of the repeated transmission. The available cell of the logical channel limits the available cell corresponding to the logical channel indicated by the allowedServingCells configured for each logical channel.

For convenience of description, this new MAC CE is referred to as a "logical channel and cell mapping restriction MAC CE" in the embodiments. The following describes the manner of use.

Use mode 1: in conjunction with repeated transmission of activated or deactivated MAC CEs (as shown in fig. 6) or repeated transmission of RLC activated or deactivated MAC CEs (as shown in fig. 4).

Take the example of repeated transmission to activate or deactivate the MAC CE (as shown in fig. 6). The same is used in conjunction with the repeated transmission of RLC activation or deactivation MAC CEs (as shown in fig. 4), except that the repeated transmission of RLC activation or deactivation MAC CEs further indicates the RLC entity, except for the RB.

A base station side: and transmitting the 'logical channel and cell mapping restriction MAC CE' while transmitting the repeated transmission activation or deactivation MAC CE, and then canceling/not canceling the available cell restriction by the corresponding logical channel according to the indication of the 'logical channel and cell mapping restriction MAC CE' aiming at the RB indicated in the repeated transmission activation or deactivation MAC CE.

A terminal side: and meanwhile, receiving a transmission repeated transmission activation or deactivation MAC CE and a 'logical channel and cell mapping restriction MAC CE' sent by a base station side, and canceling/not canceling the limitation of the available cell by the corresponding logical channel according to the indication of the 'logical channel and cell mapping restriction MAC CE' aiming at the RB which deactivates the repeated transmission in the repeated transmission activation or deactivation MAC CE.

Use mode 2: the "logical channel and cell mapping restriction MAC CE" is used alone.

A base station side:

1: and sending a 'logical channel and cell mapping restriction MAC CE' to indicate whether to cancel the available cell restriction of the logical channel corresponding to the repeated transmission RB after the repeated transmission is deactivated.

2: the transmission of the duplicate transmission activates or deactivates the MAC CE (as shown in fig. 6) or the duplicate transmission RLC activates or deactivates the MAC CE (as shown in fig. 4). Thereafter, the base station may separately transmit a duplicate transmission activation or deactivation MAC CE (as shown in fig. 6) or a duplicate transmission RLC activation or deactivation MAC CE (as shown in fig. 4), and the "logical channel and cell mapping restriction MAC CE" in 1 is continuously validated before transmitting a new "logical channel and cell mapping restriction MAC CE".

A terminal side:

1: the MAC CE of embodiment 1 is received and it is determined whether the corresponding logical channel available cell restriction is cancelled for the RB and/or RLC which deactivates the repeated transmission thereafter.

2: and receiving and activating or deactivating the repeated transmission MAC CE, and determining an available cell of a logical channel corresponding to the repeated transmission RB according to the indication of 1.

Example 2:

in this example, format 2 is used to indicate whether the limitation of the available cell for the corresponding logical channel is cancelled after the specific RB cancels the duplicate transmission.

Specifically, the MAC CE is used to indicate whether a specific RB cancels the corresponding logical channel available cell restriction after canceling the duplicate transmission. Fig. 10 is a diagram illustrating the MAC CE format used in embodiment 2, as shown in the following, the corresponding MAC subheader is a specific LCID value, or etlcid + LCID value, as shown in fig. 5 or fig. 7. For example, the corresponding DRB location in the MAC CE is set to 1, which means that after the repeated transmission of the corresponding DRB is cancelled, the cell use restriction of the logical channel under the DRB is cancelled, and otherwise, 0 is set.

Example 3:

in this example, the multiplexing RLC Activation/Deactivation MAC CE indicates whether to cancel the logical channel available cell restriction after deactivating PDCP retransmission.

Specifically, fig. 11 is a schematic diagram of a format of a MAC CE subheader used in embodiment 3, and as shown in the figure, 1 rabit in the MAC subheader corresponding to the duplicate RLC Activation/Deactivation MAC CE is used for cell restriction indication. LCID + etlcid in embodiment 3 may be used continuously 315 or using another specific value.

For example, when the cell restriction indication bit is set to 1, it corresponds to the following in the duplicate RLC Activation/Deactivation MAC CE:

after the CA repeated transmission is deactivated (namely, only one RLC entity is activated in a certain MAC entity by a corresponding RB which is repeatedly transmitted), the limitation of the available cell of the corresponding logical channel is cancelled aiming at the RLC entity which is still activated in the MAC entity; or the like, or, alternatively,

When the cell restriction indication bit is set to 0, the available cell restriction of the corresponding logical channel is not cancelled.

Example 4:

in this example, the multiplexing Activation/Deactivation MAC CE indicates whether to cancel the logical channel available cell restriction after deactivating PDCP retransmission.

The MAC CE comprises a bitmap (bit indication), the bit in the bitmap corresponds to the RB configured with the PDCP repeated transmission, and the MAC CE indicates whether to cancel the available cell limit of the logical channel configured by the RRC signaling after the PDCP repeated transmission is deactivated or not when the activation or deactivation of the RB and/or the participation of the RLC entity in the repeated transmission is indicated.

Specifically, fig. 12 is a schematic diagram of a format of a MAC CE subheader used in embodiment 4, and as shown in the figure, 1 rabit in the MAC subheader corresponding to the duplicate Activation/Deactivation MAC CE is used for cell restriction indication. The LCID in embodiment 4 may be used with continue 56 or another specific value.

For example, when the cell restriction indication bit is set to 1, corresponding to the RLC entity which is still activated and corresponds to the RB which is deactivated and repeatedly transmitted, the cell use restriction of the corresponding logical channel is cancelled; when the cell restriction indication bit is set to 0, the cell use restriction of the logical channel is not canceled.

Example 5:

in this example, a new duplicate RLC Activation/Deactivation MAC CE is introduced, which indicates whether the logical channel available cell restriction is still applied after deactivating part of the RLC entities while activating or deactivating the RLC entities configured with the DRBs that are repeatedly transmitted.

The MAC CE comprises an RB number, an RLC entity indication and a cell restriction indication bit, and indicates whether to cancel the available cell restriction of the logical channel configured by the RRC signaling after deactivating part of the RLC entities.

In implementation, the cell restriction indication bit of the MAC CE indicates:

Specifically, fig. 13 is a schematic diagram of the MAC CE format used in embodiment 5, and as shown in the MAC CE format of embodiment 5, the corresponding MAC subheader format is as shown in fig. 5 or as shown in fig. 7, where LCID or LCID + eLCID is a specific value dedicated to indicate the MAC CE of embodiment 5.

In the following MAC CE, the meaning of each domain is:

DRB index (DRB index): the DRB sequence numbers configured for PDCP retransmission may be sorted from large to small according to the absolute value of the DRB ID or sorted according to the order of the installation configuration, for example, the DRB ID in fig. 4 is an absolute value, and the DRB index is a relative value of the DRB configured for retransmission.

RLCi: the meaning is the same as in fig. 4.

Cell restriction indication: after the indication of deactivating the partial RLC entity, whether the limitation of the logical channel available cell is still applied may specifically be one of the following:

Based on the same inventive concept, the embodiment of the present invention further provides a base station, a terminal, a device for indicating the limitation of the usable cell of the logical channel, and a computer readable storage medium.

When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.

Fig. 14 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

the processor 1400 is used for reading the program in the memory 1420 and executing the following processes:

sending an indication, wherein the indication is indicated by using the MAC CE and indicates whether to enable the RRC signaling to be used for limiting the available logical channel cell configured for the logical channel corresponding to the RB or the RLC entity after activating or deactivating the PDCP repeated transmission of the RB or the RLC entity corresponding to the radio bearer;

a transceiver 1410 for receiving and transmitting data under the control of the processor 1400.

In an implementation, using the MAC CE indication includes:

In implementation, the cell restriction indication bit of the MAC CE indicates:

Where, as in fig. 14, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1400, and various circuits, represented by memory 1420, linked together. 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 1410 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 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The embodiment of the invention also provides a device for indicating the limitation of the usable cell of the logical channel, which comprises the following steps:

an indication module, configured to send an indication, where the indication indicates, by using the MAC CE, whether to enable RRC signaling to limit an available cell of a logical channel configured for a logical channel corresponding to an RB or an RLC entity after activating or deactivating PDCP retransmission of the RB or the RLC entity corresponding to the radio bearer.

The specific implementation can refer to the implementation of the cell restriction indication method for the logical channel available at the base station side. The module device included in the device is a functional module capable of implementing the method described in the method embodiment.

For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.

Fig. 15 is a schematic structural diagram of a terminal, and as shown in the figure, the terminal includes:

the processor 1500, which is used to read the program in the memory 1520, executes the following processes:

a transceiver 1510 for receiving and transmitting data under the control of the processor 1500.

In an implementation, receiving the base station indication includes:

In implementation, the cell restriction indication bit of the MAC CE indicates:

Where, as in FIG. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1500 and various circuits of memory represented by memory 1520 being linked together. 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 1510 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 user interface 1530 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

The specific implementation can refer to the implementation of the cell restriction indication method for the logical channel available at the terminal side. The module device included in the device is a functional module capable of implementing the method described in the method embodiment.

The embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above method for indicating a restriction on an available cell of a logical channel.

The specific implementation can refer to the implementation of the cell restriction indication method for the logical channels at the base station side and/or the terminal side.

In summary, in the technical solution provided in the present invention, the MAC layer control signaling MAC CE is used to indicate whether to apply the mapping relationship between the logical channel configured by the RRC signaling and the cell, i.e. the cell restriction relationship available for the logical channel.

The MAC CE may:

Corresponding MAC CE designs are further provided in the embodiments.

Due to the scheme of activating or deactivating the cell corresponding to the logical channel after introducing the repeated transmission for deactivating the RB and/or RLC, the cell resource can be reasonably utilized under different repeated transmission configurations and activation conditions.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for indicating cell restriction available for logical channels, comprising:

the base station sends an indication, wherein the indication is indicated by the base station by using a media access control (MAC CE) unit, and indicates whether to enable the Radio Resource Control (RRC) signaling to limit the available logical channel configured for the logical channel corresponding to the Radio Bearer (RB) or a Radio Link Control (RLC) entity after activating or deactivating the repeated transmission of the Packet Data Convergence Protocol (PDCP) of the corresponding Radio Bearer (RB) or the radio bearer.

2. The method of claim 1, wherein the indication comprises one or a combination of:

3. The method of claim 1 or 2, wherein the base station using the MAC CE indication comprises:

4. The method of claim 3, wherein the MAC CE payload section of the MAC CE is 0 in length and contains only MAC subheader, wherein the MAC subheader format indicates cancellation of the logical channel available cell restriction using a specific logical channel identity (LCID 1) value or using a specific extended logical channel identity (eLCID + LCID 1) value; using a specific LCID2 value or a specific LCID + LCID2 value, indicates that the logical channel available cell restriction is not cancelled.

5. The method of claim 1 or 2, wherein the MAC CE includes RB ID and RLC entity indication corresponding to RB, and the MAC CE indicates whether to cancel the logical channel available cell restriction configured by RRC signaling after activating or deactivating RB and/or RLC entity to participate in the repeated transmission and deactivating PDCP repeated transmission.

6. The method of claim 5, wherein the RB ID and RLC entity indication part of the MAC CE is used to indicate activation or deactivation of RBs and/or participation of RLC entities in repeated transmission, and bit in the MAC sub-header corresponding to the MAC CE is used to indicate whether to cancel logical channel available cell restriction.

7. The method of claim 5, wherein canceling the logical channel available cell restriction of the RRC signaling configuration comprises:

after the carrier aggregation CA is deactivated by repeated transmission, canceling the limitation of the available cell of the corresponding logic channel aiming at the RLC entity still activated in the media access control MAC entity; or the like, or, alternatively,

and when the data radio bearer DRB indicated by the MAC CE deactivates repeated transmission, canceling the limitation of the available cell of the corresponding logical channel for the RLC entity which is still activated.

8. The method of claim 1 or 2, wherein the MAC CE comprises a bit indication bitmap, bits of the bitmap correspond to RBs to which PDCP retransmission is configured, and the MAC CE indicates whether to cancel the RRC signaling configured logical channel available cell restriction after the activation or deactivation of the RBs and/or the participation of the RLC entity in the retransmission, while indicating the activation or deactivation of the RBs and/or the participation of the RLC entity in the retransmission.

9. The method of claim 8, wherein a bitmap of the MAC CE is used to indicate activation or deactivation of repeated transmission of RBs, and the MAC CE indicates whether to cancel the logical channel available cell restriction corresponding to bits in the MAC subheader.

10. The method of claim 8, wherein canceling the logical channel available cell restriction of the RRC signaling configuration comprises:

11. The method of claim 1 or 2, wherein the MAC CE comprises RB number, RLC entity indication and cell restriction indication bit indicating whether to cancel the logical channel available cell restriction configured by RRC signaling after deactivating part of the RLC entity.

12. The method of claim 11, wherein the cell restriction indication bits of the MAC CE indicate:

13. A method for indicating cell restriction available for logical channels, comprising:

14. The method of claim 13, wherein the MAC CE indicates one or a combination of:

15. The method of claim 13 or 14, wherein receiving a base station indication comprises:

16. The method of claim 15, wherein the MAC CE payload portion of the MAC CE is 0 in length and contains only MAC subheaders formatted using a specific LCID1 value or using a specific eLCID + LCID1 value indicating cancellation of the logical channel available cell restriction; using a specific LCID2 value or a specific LCID + LCID2 value, indicates that the logical channel available cell restriction is not cancelled.

17. The method according to claim 13 or 14, wherein a base station indication is received, wherein the indication is an indication that the MAC CE includes an RB ID and a corresponding RLC entity under the RB, and wherein the MAC CE indicates whether to cancel the RRC signaling configured logical channel available cell restriction after activating or deactivating the RB and/or the RLC entity to participate in the repeated transmission and also after deactivating the PDCP repeated transmission.

18. The method of claim 17, wherein the RB ID and RLC entity indication part of the MAC CE is used to indicate activation or deactivation of RBs and/or participation of RLC entities in repeated transmission, and bit in the MAC sub-header corresponding to the MAC CE is used to indicate whether to cancel logical channel available cell restriction.

19. The method of claim 17, wherein canceling the logical channel available cell restriction of the RRC signaling configuration comprises:

20. The method according to claim 13 or 14, wherein a base station indication is received, said indication is that said MAC CE contains a bitmap, bits of which correspond to RBs for which PDCP retransmission is configured, and the MAC CE indicates whether to cancel the logical channel available cell restriction configured by RRC signaling after PDCP retransmission is deactivated while indicating activation or deactivation of RBs and/or RLC entities to participate in retransmission.

21. The method of claim 20, wherein a bitmap of the MAC CE is used to indicate activation or deactivation of repeated transmission of RBs, and the MAC CE indicates whether to cancel the logical channel available cell restriction corresponding to a bit in the MAC subheader.

22. The method of claim 20, wherein canceling the logical channel available cell restriction of the RRC signaling configuration comprises:

23. The method of claim 13 or 14, wherein the MAC CE comprises RB number, RLC entity indication and cell restriction indication bit indicating whether to cancel the available cell restriction of the logical channel configured by RRC signaling after deactivating part of the RLC entity.

24. The method of claim 23, wherein the MAC CE is indicated by a MAC subheader with a MAC CE length of 0, wherein the MAC subheader format is indicated using a specific LCID value or using a specific eclcid + LCID value, using an LCID or eclcid + LCID value.

25. The method of claim 24, wherein the cell restriction indication bits of the MAC CE indicate that:

26. A base station, comprising:

27. The base station of claim 26, wherein the indication comprises one or a combination of:

28. The base station according to claim 26 or 27, wherein using the MAC CE indication comprises:

29. The base station of claim 28, wherein the MAC CE payload portion of the MAC CE has a length of 0 and only includes a MAC subheader, wherein the MAC subheader format is either using a specific LCID1 value or using a specific eLCID + LCID1 value, indicating cancellation of the logical channel available cell restriction; using a specific LCID2 value or a specific LCID + LCID2 value, indicates that the logical channel available cell restriction is not cancelled.

30. The base station according to claim 26 or 27, wherein the MAC CE contains RB ID and corresponding RLC entity indication under RB, and the MAC CE indicates whether to cancel the logical channel available cell restriction of RRC signaling configuration after activation or deactivation of RB and/or RLC entity participation in repeated transmission and also after deactivation of PDCP repeated transmission.

31. The base station of claim 30, wherein the RB ID and RLC entity indication part of the MAC CE is used to indicate activation or deactivation of RB and/or RLC entity to participate in repeated transmission, and bit in the MAC sub-header corresponding to the MAC CE is used to indicate whether to cancel logical channel available cell restriction.

32. The base station of claim 30, wherein canceling the logical channel available cell restriction of RRC signaling configuration comprises:

33. The base station according to claim 26 or 27, wherein the MAC CE comprises a bitmap, bits of the bitmap correspond to RBs to which PDCP retransmission is configured, and the MAC CE indicates whether to cancel the limitation of the logical channel available cell configured by the RRC signaling after the activation or deactivation of the RBs and/or the participation of the RLC entity in the retransmission is performed, while indicating the activation or deactivation of the RBs and/or the participation of the RLC entity in the retransmission.

34. The base station of claim 33, wherein the bitmap of the MAC CE is used to indicate activation or deactivation of repeated transmission of RBs, and the MAC CE corresponds to a bit in the MAC subheader to indicate whether to cancel the logical channel available cell restriction.

35. The base station of claim 33, wherein canceling the logical channel available cell restriction of RRC signaling configuration comprises:

36. The base station of claim 26 or 27, wherein the MAC CE comprises RB number, RLC entity indication and cell restriction indication bit indicating whether to cancel the available cell restriction of the logical channel configured by RRC signaling after deactivating part of the RLC entity.

37. The base station of claim 36, wherein the MAC CE is indicated by a MAC subheader with a MAC CE length of 0, wherein the MAC subheader format is indicated using a specific LCID value or using a specific eLCID + LCID value, using an LCID or eLCID + LCID value.

38. The base station of claim 37, wherein the cell restriction indication bit of the MAC CE indicates that:

39. A cell restriction indication apparatus for indicating logical channel availability, comprising:

40. A terminal, comprising:

41. The terminal of claim 40, wherein the MAC CE indicates one or a combination of:

42. The terminal of claim 40 or 41, wherein receiving a base station indication comprises:

43. The terminal of claim 42, wherein the MAC CE payload section of the MAC CE is 0 in length and contains only MAC subheaders formatted using a specific LCID1 value or using a specific eLCID + LCID1 value indicating cancellation of the logical channel available cell restriction; using a specific LCID2 value or a specific LCID + LCID2 value, indicates that the logical channel available cell restriction is not cancelled.

44. The terminal according to claim 40 or 41, wherein a base station indication is received, and the indication is the MAC CE including RB ID and corresponding RLC entity indication under RB, and the MAC CE indicates whether to cancel the logical channel available cell restriction of RRC signaling configuration after activating or deactivating the RB and/or the RLC entity to participate in the repeated transmission and simultaneously indicates whether to cancel the logical channel available cell restriction after deactivating the PDCP repeated transmission.

45. The terminal of claim 44, wherein the RB ID and RLC entity indication part of the MAC CE is used for indicating activation or deactivation of RBs and/or participation of RLC entities in repeated transmission, and bit in the MAC sub-header corresponding to the MAC CE is used for indicating whether to cancel the logical channel available cell restriction.

46. The terminal of claim 44, wherein canceling the logical channel available cell restriction of RRC signaling configuration comprises:

47. The terminal according to claim 40 or 41, wherein a base station indication is received, and the indication is that the MAC CE comprises a bitmap, bits in the bitmap correspond to RBs configured for PDCP repeat transmission, and the MAC CE indicates whether to cancel the logical channel available cell restriction configured for RRC signaling after the PDCP repeat transmission is deactivated while indicating activation or deactivation of the RBs and/or the RLC entities to participate in the repeat transmission.

48. The terminal of claim 47, wherein a bitmap of the MAC CE is used for indicating activation or deactivation of repeated transmission of RBs, and the MAC CE indicates whether to cancel the logical channel available cell restriction corresponding to bits in the MAC subheader.

49. The terminal of claim 47, wherein canceling the logical channel available cell restriction of the RRC signaling configuration comprises:

50. The terminal of claim 40 or 41, wherein the MAC CE comprises RB number, RLC entity indication and cell restriction indication bit indicating whether to cancel the logical channel available cell restriction configured by RRC signaling after deactivating part of the RLC entity.

51. The terminal of claim 50, wherein the MAC CE is indicated by a MAC subheader with a MAC CE length of 0, wherein the MAC subheader format is indicated using a specific LCID value or using a specific eLCID + LCID value, using an LCID or eLCID + LCID value.

52. The terminal of claim 51, wherein the cell restriction indication bit of the MAC CE indicates that:

53. A cell restriction indication apparatus for indicating logical channel availability, comprising:

54. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 25.