CN114172625B

CN114172625B - Method, device, equipment and medium for indicating limitation of available cell of logical channel

Info

Publication number: CN114172625B
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: 2023-09-29
Anticipated expiration: 2040-09-11
Also published as: CN114172625A

Abstract

The invention discloses a method, a device, equipment and a storage medium for indicating the limitation of a logic channel available cell, which comprise the following steps: and the base station sends an indication, wherein the indication is indicated by using the MAC CE, and after the PDCP repeated transmission of the corresponding RLC entity in the radio bearer RB or the radio bearer is activated or deactivated, whether the logic channel available cell limitation configured by the RRC signaling for the logic channel corresponding to the RB or the RLC entity is started or not is indicated. The invention can not solve the problem of resource waste caused by that after the CA repeated transmission in the cell group is canceled, partial cells can not be used for activating the RLC entity to transmit data.

Description

Method, device, equipment and medium for indicating limitation of available cell 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 a logical channel available cell.

Background

URLLC (Ultra high reliability and Ultra low latency), an important scenario supported by 5G, is that a solution currently proposed by 3GPP introduces a duplicate transmission mechanism, i.e. transmitting the same PDCP (packet data convergence protocol ) layer PDU (protocol data unit, protocol Data Unit) via multiple paths, improving transmission reliability via multiplexing gain, and reducing transmission latency, due to its relatively high requirements on latency and reliability.

The prior art has the following defects: and 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 a logic channel available cell, which are used for solving the problem that the effective use of resources under a cell group is not facilitated under the configuration of PDCP repeated transmission.

The invention provides the following technical scheme:

a method for indicating a logical channel available cell limit, comprising:

and the base station sends an instruction, wherein the instruction is indicated by the base station by using a medium access control unit (MAC CE), and after the PDCP repeated transmission of the corresponding RLC entity in the radio bearer is activated or deactivated, whether the logic channel available cell limitation configured by the RRC signaling for the logic channel corresponding to the RB or the RLC entity is started or not is indicated.

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

after PDCP repeated transmission of a specific RB is indicated to be activated or deactivated, enabling or not enabling all logic channel available cell limits corresponding to the RB configured by RRC signaling; or alternatively, the process may be performed,

after PDCP repeated transmission of a specific RB is indicated to be activated or deactivated, partial logic channel available cell limitation corresponding to the RB configured by RRC signaling is started or not started; or alternatively, the process may be performed,

After the PDCP retransmission of the RLC entity under a specific RB is instructed to be activated or deactivated, the logical channel available cell restriction corresponding to the RLC entity configured by RRC signaling is enabled or not enabled.

In implementations, the base station using the MAC CE indication includes:

after the base station uses the MAC CE to instruct the PDCP repeated transmission to cancel, whether the logic channel available cell limit configured by the RRC signaling is canceled or not, wherein the instruction is valid for all RBs; or alternatively, the first and second heat exchangers may be,

after the base station uses the MAC CE to indicate the PDCP repeated transmission cancellation of the specific RB, whether the logical channel available cell limit corresponding to the RB configured by the RRC signaling is cancelled or not.

In implementation, the length of the MAC CE payload portion of the MAC CE is 0, and only includes a MAC subheader, where the MAC subheader format indicates that the available cell restriction of the logical channel is canceled by using a specific LCID1 value or using a specific icld+lcid 1 value; using a specific LCID2 value or a specific eclcid + LCID2 value indicates that the logical channel available cell restriction is not cancelled.

In implementation, the MAC CE includes an RB ID and a corresponding RLC entity indication under the RB, where the MAC CE indicates to activate or deactivate the RB and/or the RLC entity to participate in retransmission, and indicates whether to cancel the logical channel available cell restriction configured by RRC signaling after deactivating PDCP retransmission.

In implementation, the RB ID and RLC entity indicating part of the MAC CE are used to indicate that the RB is activated or deactivated and/or the RLC entity participates in the retransmission, and the bit in the MAC sub-header corresponding to the MAC CE is used to indicate whether to cancel the logical channel available cell restriction.

In implementation, canceling the logical channel available cell restriction of the RRC signaling configuration includes:

after CA repeated transmission is deactivated, canceling the available cell limit of a corresponding logic channel aiming at the RLC entity still activated in the MAC entity; or alternatively, the first and second heat exchangers may be,

canceling the available cell restriction of the corresponding logical channel for the RLC entity which deactivates the retransmission; or alternatively, the first and second heat exchangers may be,

after the DRB indicated by the MAC CE deactivates the retransmission, the available cell restriction of the corresponding logical channel is canceled for the RLC entity that is still activated.

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

In implementation, the bitmap of the MAC CE is used to indicate that the RB is activated or deactivated for repeated transmission, and the MAC CE corresponds to a bit in the MAC sub-header to indicate whether to cancel the logical channel available cell restriction.

for the still activated RLC entity corresponding to the RB of the deactivated retransmission, the cell usage restriction of the corresponding logical channel is canceled.

In practice, the MAC CE includes an RB number, an RLC entity indication, and a cell restriction indication bit, which indicates whether to cancel the logical channel available cell restriction of the RRC signaling configuration after deactivating a portion 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 ellid+lcid value, and using LCID or ellid+lcid value.

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

after CA repeated transmission is deactivated, aiming at the RLC entity still activated in the MAC entity, whether the available cell limit of the corresponding logic channel is canceled or not; or alternatively, the first and second heat exchangers may be,

whether to cancel the available cell restriction of the corresponding logical channel for the RLC entity which deactivates the retransmission; or alternatively, the first and second heat exchangers may be,

after the DRB indicated by the MAC CE deactivates the retransmission, whether the corresponding logical channel available cell restriction is canceled for the RLC entity that is still active.

A method for indicating a logical channel available cell limit, comprising:

The terminal receives an indication of a base station, wherein the indication is indicated by using an MAC CE by the base station, and after PDCP repeated transmission of a radio bearer RB or a corresponding RLC entity in the radio bearer is activated or deactivated, whether a logic channel available cell limit configured by RRC signaling for a logic channel corresponding to the RB or the RLC entity is started or not is indicated;

and determining whether to enable the RRC signaling to configure the logic channel available cell limit for the logic channel corresponding to the RB or the RLC entity according to the indication.

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

after the logic channel of PDCP repeated transmission of the RLC entity under the specific RB is indicated to be activated or deactivated, the logic channel available cell limit corresponding to the RLC entity configured by RRC signaling is enabled or not enabled.

In an implementation, receiving the base station indication includes:

receiving an indication of a base station, wherein the indication is indicated by the base station by using a MAC CE, and indicates whether logical channel available cell restriction configured by RRC signaling is canceled after the PDCP repeated transmission is canceled, and the indication is valid for all RBs; or alternatively, the first and second heat exchangers may be,

And receiving an indication of the base station, wherein the indication is indicated by the base station by using the MAC CE, and whether the logical channel available cell limit corresponding to the RB configured by the RRC signaling is canceled or not is indicated after the PDCP repeated transmission of the specific RB is canceled.

In implementation, receiving a base station indication, where the indication is that the MAC CE includes an RB ID and a corresponding RLC entity indication under the RB, where the MAC CE instructs to activate or deactivate the RB and/or the RLC entity to participate in retransmission, and simultaneously instructs whether to cancel a logical channel available cell restriction configured by RRC signaling after deactivating PDCP retransmission.

In an implementation, receiving an indication of a base station, where the indication is that the MAC CE includes a bitmap, where bits in the bitmap correspond to RBs configured for PDCP retransmission, and the MAC CE indicates, when the RB and/or RLC entity is instructed to be activated or deactivated to participate in retransmission, whether to cancel a logical channel available cell restriction configured by RRC signaling after deactivating PDCP retransmission.

A base station, comprising:

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

the base station sends an indication, wherein the indication is indicated by using an MAC CE by the base station, and after PDCP repeated transmission of a radio bearer RB or a corresponding RLC entity in the radio bearer is activated or deactivated, whether a logic channel available cell limit configured by RRC signaling for a logic channel corresponding to the RB or the RLC entity is started or not is indicated;

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

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

In implementations, using the MAC CE indication includes:

after the cancellation of the PDCP repeated transmission is indicated by using the MAC CE, whether the logic channel available cell limit configured by the RRC signaling is cancelled or not is indicated, wherein the indication is valid for all RBs; or alternatively, the first and second heat exchangers may be,

after the MAC CE indicates that the PDCP repeated transmission of the specific RB is canceled, whether the logical channel available cell limit corresponding to the RB configured by the RRC signaling is canceled or not is indicated.

A logical channel available cell restriction indication apparatus, comprising:

the indication module is used for sending an indication by the base station, wherein the indication is indicated by the base station by using the MAC CE, and after the PDCP repeated transmission of the corresponding RLC entity in the radio bearer RB or the radio bearer is activated or deactivated, whether the logic channel available cell limitation configured by the RRC signaling for the logic channel corresponding to the RB or the RLC entity is started or not is indicated.

A terminal, comprising:

receiving an indication of a base station, wherein the indication is indicated by using an MAC CE by the base station, and after PDCP repeated transmission of a radio bearer RB or a corresponding RLC entity in the radio bearer is indicated to be activated or deactivated, whether a logic channel available cell limit configured by RRC signaling for a logic channel corresponding to the RB or the RLC entity is started or not;

determining whether to enable RRC signaling to configure a logical channel available cell limit for a logical channel corresponding to the RB or the RLC entity according to the indication;

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

In an implementation, receiving the base station indication includes:

In implementation, receiving a base station indication, where the MAC CE includes an RB ID and a corresponding RLC entity indication under the RB, where the MAC CE instructs to activate or deactivate the RB and/or the RLC entity to participate in retransmission, and simultaneously instructs whether to cancel a logical channel available cell restriction configured by RRC signaling after deactivating PDCP retransmission.

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 using a MAC CE by the base station, and indicates whether to enable RRC signaling to configure a logical channel available cell restriction 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 RB or the radio bearer;

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

A computer-readable storage medium storing a computer program for executing the above 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 instruct to activate or deactivate PDCP repeated transmission, whether the logic channel available cell limit configured by RRC signaling is started or not; the base station can accurately indicate the active RLC entity to correspond to the available cell of the logic channel under the condition of different RLC entity activation, so that the logic channel data can be transmitted in the indicated cell under the condition of different PDCP repeated transmission activation, thereby achieving the effective use of transmission resources, and the problem that after CA repeated transmission in a cell group is canceled, part of cells can not be used for the active RLC entity to transmit the data, and resource waste is caused is avoided.

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 do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic diagram of a repeated transmission model under CA in an embodiment of the present invention;

fig. 2 is a schematic diagram of a repeated transmission model under DC in an embodiment of the present invention;

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

fig. 4 is a schematic diagram of repeated RLC activation or deactivation MAC-CE according to an embodiment of the present invention;

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

fig. 6 is a schematic diagram of a retransmission activation or deactivation MAC CE according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a MAC sub-header (R/LCID/(eclcid) MAC sub-header) corresponding to a retransmission activation or deactivation MAC CE in an embodiment of the present invention;

fig. 8 is a schematic flow chart of an implementation of a method for indicating cell limitation available on a logic channel at a base station side according to an embodiment of the present invention;

fig. 9 is a schematic flow chart of an implementation of a method for indicating cell limitation available for a logical channel at a terminal side according to an embodiment of the present invention;

fig. 10 is a schematic diagram of 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 schematic diagram of 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 schematic diagram of a base station structure according to an embodiment of the present invention;

fig. 15 is a schematic diagram of a terminal structure according to an embodiment of the present invention.

Detailed Description

The inventors noted during the course of the 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 models of retransmission under CA (carrier aggregation ) and DC (dual connectivity, dual connectivity) are shown respectively.

I.e., one radio bearer of the PDCP layer (corresponding to one PDCP entity), is transmitted through a plurality of LCHs (Logical channels) respectively at the RLC (radio link control ) layer, each Logical Channel corresponding to one RLC entity. For the CA model, multiple logical channels corresponding to the radio bearer of the retransmission are processed by one MAC entity at the MAC (medium access control ) layer, and when the retransmission is activated, data from different RLC logical channels are mapped to different carrier (i.e. cell) transmissions, such as LCH1 is mapped to cell1 transmission and LCH2 is mapped to cell2 transmission in fig. 1; after the repeated transmission is deactivated, the mapping relation from the logical channel to the cell is canceled, that is, after the repeated transmission is deactivated, the data of the LCH1 can be transmitted on the cell1 and the cell2 after the LCH2 is deactivated. For the DC model, a plurality of logical channels corresponding to a repetition RB (Radio Bearer) are mapped to different MAC entities, respectively.

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

There are also schemes to introduce PDCP retransmissions for up to 4 logical channels for one RB, fig. 3 is a schematic diagram of PDCP retransmission configurations, two PDCP retransmission configurations being shown.

Fig. 4 is a schematic diagram of repeated RLC activation or deactivation MAC CE (Duplication RLC Activation/Deactivation MAC CE), and as shown in the fig. 4 MAC CE (control element) may be used by a base station to activate or deactivate RLC entities corresponding to each RB of a terminal. Wherein, DRB ID (DRB identification; DRB: data radio bearer, data Radio Bearer) refers to DRB identification configured by a base station through RRC (radio resource control ) signaling, RLCi corresponds to other RLCs except for the primary RLC, i is arranged in ascending order according to the value of a logical channel number LCID (logical channel identification, logical Channel ID) according to the sequence of a first MCG (primary cell group, master Cell Group) and a second SCG (secondary cell group ). The primary RLC cannot be deactivated. Rlci=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/(eclcid) MAC subheader, and the MAC subheader corresponding to the duplicate RLC activation or Deactivation MAC CE is shown as a number 315 corresponding to lcid+eclcid (extended LCID) for Duplication RLC Activation/Deactivation MAC CE. The "+" meaning that the sub-header structure includes lcid+ellid, which is not described in detail in other embodiments.

In addition, fig. 6 is a schematic diagram of a retransmission activated or deactivated MAC CE, and a PDCP retransmission activated or deactivated MAC CE for DRBs introduced in the scheme (Duplication Activation/Deactivation MAC CE) is shown in fig. 6.

Fig. 7 is a schematic diagram of a MAC sub-header (R/LCID/(eclcid) MAC sub-header) corresponding to a duplicate transmission activated or deactivated MAC CE, where an LCID value for indicating that the duplicate transmission activated or deactivated MAC CE is 56.

The prior art is that after PDCP retransmission is deactivated, the logical channel to cell mapping (configured by allowedServingCells) is canceled. There is no special provision for PDCP repeat transmission configuring more than 2 RLC entities.

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

According to the existing scheme, in the case that more than 2 RLC entities are configured for PDCP repeat transmission of one RB, the existing technology cannot accurately control the cell restriction possible for each RLC entity corresponding to a logical channel. For example, in the case that PDCP retransmission is not deactivated, even if CA retransmission under one cell group CG is cancelled, the RLC entity activated under the cell group can only use the cell configured by allowedServingCells, and cannot use other cells under the cell group, which is disadvantageous for efficient use of resources under the cell group.

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

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

In the description process, the description will be made from the implementation of the UE and the base station, respectively, and then an example of the implementation of the cooperation between the UE and the base station will be given to better understand the implementation of the solution given in the embodiment of the present invention. Such a description does not mean that the two must be implemented cooperatively or separately, and in fact, when the UE and the base station are implemented separately, they solve the problems of 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 available cell limitation of a logic channel at a base station side, and as shown in the drawing, the method includes:

step 801, the base station sends an indication, where the indication is indicated by using a MAC CE by the base station, and indicates whether to enable RRC signaling to configure a logical channel available cell restriction 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 RB or the radio bearer.

Fig. 9 is a schematic flow chart of implementing the method for indicating available cell limitation of a logical channel at a terminal side, and as shown in the drawing, the method includes:

step 901, a terminal receives an indication of a base station, wherein the indication is indicated by using an MAC CE by the base station, and after PDCP repeated transmission of a radio bearer RB or a corresponding RLC entity in the radio bearer is indicated to be activated or deactivated, whether a logic channel available cell limit configured by RRC signaling for a logic channel corresponding to the RB or the RLC entity is started or not;

step 902, determining whether to enable the RRC signaling to configure a logical channel available cell restriction for a logical channel corresponding to the RB or RLC entity according to the first indication.

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

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

Specifically, the MAC CE may:

after PDCP repeated transmission of a specific RB is indicated to be activated or deactivated, all available cell limits of the logic channels corresponding to the RB are started or not started; or alternatively, the process may be performed,

after PDCP repeated transmission of a specific RB is indicated to be activated or deactivated, partial logic channel available cell limitation corresponding to the RB is started or not started; or alternatively, the process may be performed,

after the logical channel of the retransmission of the RLC entity under the specific RB is instructed to be activated or deactivated, the available cell restriction of the logical channel corresponding to the RLC entity is activated or not activated.

The three modes can send proper MAC CE indications according to different requirements, and achieve the purpose of canceling or not canceling the specific logic channel available cell limit of RRC configuration.

The following is an example.

The logical channel and cell mapping restriction MAC CE in embodiments 1 and 2 is used in superposition with the original retransmission activated or deactivated MAC CE or the retransmission RLC activated or deactivated MAC CE, that is, the retransmission activated or deactivated MAC CE or the retransmission RLC activated or deactivated MAC CE is used to activate or deactivate the retransmission, and the logical channel and cell mapping restriction MAC CE is used to indicate whether the logical channel and cell mapping restriction is effective.

Embodiments 3, 4, and 5 determine whether the logical channel available cell restriction corresponding to the RLC or the RB is valid while the RLC is repeatedly transmitted or deactivated or the retransmission is activated or deactivated, and this MAC CE may be used without the prior art retransmission activation or deactivation of the MAC CE.

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 logical channel available cell restriction is canceled or not canceled after the repeated transmission of all RBs is canceled.

The base station uses the MAC CE to indicate whether the logical channel available cell limit configured by the RRC signaling is canceled after the PDCP repeated transmission is canceled, and the indication is valid for all RBs;

Specifically, only the MAC sub-header (i.e., the MAC CE length is 0) is used, and the MAC sub-header format indicates cancellation of the corresponding logical channel available cell restriction after repeated transmission cancellation as shown in fig. 5 (using a specific LCID1 value) or as shown in fig. 7 (using a specific lcid+lcid1 value), and the specific LCID2 value indicates that the corresponding logical channel available cell restriction is not cancelled after repeated transmission cancellation. The logical channel available cell limits, i.e., the available cell corresponding to each logical channel indicated by the allowedServingCells parameter configured for that logical channel.

For ease of description, this new MAC CE will be referred to as a "logical channel and cell mapping restriction MAC CE" in the embodiments. The following describes the mode of use.

Use mode 1: used in conjunction with either a retransmission activated or deactivated MAC CE (as shown in fig. 6) or a retransmission RLC activated or deactivated MAC CE (as shown in fig. 4).

Take the example of repeated transmission activation or deactivation of MAC CEs (as shown in fig. 6). The same manner as when used in conjunction with the retransmission RLC activation or deactivation MAC CE (as shown in fig. 4) except that the retransmission RLC activation or deactivation MAC CE further indicates the RLC entity in addition to the RB.

Base station side: and transmitting the 'logical channel and cell mapping restriction MAC CE' while transmitting the repeated transmission activated or deactivated MAC CE, and activating or deactivating the RBs indicated in the MAC CE for the repeated transmission according to the 'logical channel and cell mapping restriction MAC CE', wherein the corresponding logical channel cancels/does not cancel the available cell restriction.

Terminal side: and simultaneously receiving the transmission repeated transmission activation or deactivation MAC CE and the logic channel and cell mapping restriction MAC CE sent by the base station side, aiming at the RB of which the repeated transmission is deactivated in the repeated transmission activation or deactivation MAC CE, canceling/not canceling the available cell restriction by the corresponding logic channel according to the indication of the logic channel and cell mapping restriction MAC CE.

Usage pattern 2: "logical channel and cell mapping limit MAC CE" is used alone.

Base station side:

1: and transmitting a logic channel and cell mapping restriction (MAC CE) to indicate whether to cancel the logic channel available cell restriction corresponding to the repeated transmission RB after the repeated transmission is deactivated.

2: the transmission repetition activates or deactivates the MAC CE (as shown in fig. 6) or the transmission repetition RLC activates or deactivates the MAC CE (as shown in fig. 4). Thereafter, the base station may transmit either the retransmission activated or deactivated MAC CE alone (as shown in fig. 6) or the retransmission RLC activated or deactivated MAC CE (as shown in fig. 4), the "logical channel and cell mapping restriction MAC CE" in 1 is continuously validated before transmitting the new "logical channel and cell mapping restriction MAC CE".

Terminal side:

1: the MAC CE of embodiment 1 is received to determine whether to cancel the corresponding logical channel available cell restriction for RBs and/or RLC for which retransmission is deactivated thereafter.

2: and receiving the activated or deactivated retransmission MAC CE, and determining an available cell of the logical channel corresponding to the retransmission RB according to the indication of 1.

Example 2:

in this example, format 2 is used to indicate whether to cancel the available cell restriction of the corresponding logical channel after the particular RB cancels the duplicate transmission.

Specifically, the MAC CE is used to indicate whether a specific RB cancels the available cell restriction of the corresponding logical channel after canceling the duplicate transmission. Fig. 10 is a schematic diagram of a MAC CE format used in embodiment 2, where the MAC CE format is shown as follows, and the corresponding MAC subheader uses a specific LCID value, or an ellid+lcid value, as shown in fig. 5 or fig. 7. For example, setting the corresponding DRB position to 1 in the MAC CE indicates that when the repeated transmission of the corresponding DRB is canceled, the cell usage restriction of the logical channel under the DRB is canceled, and 0 is the opposite.

Example 3:

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

Specifically, fig. 11 is a schematic diagram of the format of the MAC CE subheader used in embodiment 3, and as shown in the figure, 1 Rbit in the corresponding MAC subheader is used for cell restriction indication Duplication RLC Activation/Deactivation MAC CE. Lcid+ellid in example 3 may continue to use 315 or use another particular value.

For example, when the cell restriction indication bit is set to 1, corresponding to Duplication RLC Activation/Deactivation MAC CE:

after CA retransmission is deactivated (namely, only one corresponding retransmission RB activates an RLC entity in a certain MAC entity), for the RLC entity still activated in the MAC entity, the available cell limit of a corresponding logical channel is canceled; or alternatively, the first and second heat exchangers may be,

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

Example 4:

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

The MAC CE comprises a bitmap (bit indication), wherein bits in the bitmap correspond to RBs configured with PDCP retransmission, and the MAC CE indicates whether to cancel the logic channel available cell limit configured by RRC signaling after the PDCP retransmission is deactivated while indicating that the RBs are activated or deactivated and/or the RLC entity participates in the retransmission.

Specifically, fig. 12 is a schematic diagram of the format of the MAC CE subheader used in embodiment 4, and as shown in the figure, 1 Rbit in the corresponding MAC subheader is used for cell restriction indication Duplication Activation/Deactivation MAC CE. LCID in example 4 may continue to use 56 or use another particular value.

For example, when the cell restriction indication bit is set to 1, in the corresponding Duplication Activation/Deactivation MAC CE, for the still activated RLC entity corresponding to the RB of which the retransmission is deactivated, the cell usage restriction of the corresponding logical channel is canceled; when the cell restriction indication bit is set to 0, the cell usage restriction of the logical channel is not canceled.

Example 5:

in this example, a new Duplication RLC Activation/Deactivation MAC CE is introduced, a new Duplication RLC Activation/Deactivation MAC CE is introduced, indicating whether logical channel availability cell restriction is to be applied after deactivating part of the RLC entity while activating or deactivating the RLC entity configured with the repeatedly transmitted DRB.

The MAC CE includes an RB number, an RLC entity indication, and a cell restriction indication bit indicating whether to cancel a logical channel available cell restriction of the RRC signaling configuration after deactivating a portion of the RLC entity.

Specifically, fig. 13 is a schematic diagram of a MAC CE format used in embodiment 5, where the MAC CE format of embodiment 5 is shown in fig. 5 or fig. 7, and the corresponding MAC sub-header format is shown in fig. 5 or fig. 7, where LCID or lcid+eclcid is a specific value dedicated to indicating the MAC CE of embodiment 5.

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

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

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

Cell restriction indication: after the RLC entity is deactivated, if the logical channel available cell restriction is still applied, the cancel operation may specifically be one of the following:

Based on the same inventive concept, the embodiments of the present invention further provide a base station, a terminal, a device for indicating the limitation of the available cell of the logical channel, and a computer readable storage medium, and because the principle of solving the problem of these devices is similar to that of the indication method of the limitation of the available cell of the logical channel, the implementation of these devices can refer to the implementation of the method, and the repetition is omitted.

In implementing the technical scheme provided by the embodiment of the invention, the method can be implemented as follows.

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

processor 1400, for reading the program in memory 1420, performs the following process:

sending an indication, wherein the indication is indicated by using an MAC CE, and after the PDCP repeated transmission of a radio bearer RB or a corresponding RLC entity in the radio bearer is indicated to be activated or deactivated, whether the logic channel available cell limitation configured by the RRC signaling for the logic channel corresponding to the RB or the RLC entity is started or not is indicated;

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

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

In implementations, using the MAC CE indication includes:

Wherein in fig. 14, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1400 and various circuits of the memory represented by the memory 1420, are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1410 may be a number of elements, i.e., include a transmitter and a receiver, providing 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 available cell of the logic channel, which comprises the following components:

and the indication module is used for sending an indication, wherein the indication is indicated by using the MAC CE, and after the radio bearer RB or the PDCP repeated transmission of the corresponding RLC entity in the radio bearer is activated or deactivated, whether the logic channel available cell limitation configured by the RRC signaling for the logic channel corresponding to the RB or the RLC entity is started or not is indicated.

Specific implementation can be seen from the implementation of the indication method of the available cell limit of the logic channel 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, the parts of the above apparatus are described as being functionally divided into various modules or units, respectively. Of course, the functions of each module or unit may be implemented in the same piece or pieces of software or hardware when implementing the present invention.

Fig. 15 is a schematic view of a terminal structure, and as shown in the drawing, the terminal includes:

processor 1500, for reading the program in memory 1520, performs the following process:

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

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

In an implementation, receiving the base station indication includes:

Wherein in fig. 15, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1500 and various circuits of memory represented by the memory 1520. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1510 may be a number of elements, including a transmitter and a receiver, providing 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 an inscribed desired device for a different user device, 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.

Specific implementation can be seen from the implementation of the method for indicating the available cell limit of the logical channel 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 invention also provides a computer readable storage medium, which is characterized in that the computer readable storage medium stores a computer program for executing the method for indicating the limit of the available cell of the logic channel.

Specific implementation can be seen from the implementation of the indication method of the available cell limit of the logic channel at the base station side and/or the terminal side.

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

The MAC CE may:

The embodiment also further provides a corresponding MAC CE design.

After the scheme is introduced to deactivate the repeated transmission of the RB and/or the RLC, the logic channel corresponds to the activation or deactivation scheme of the cell, so that the cell resources can be reasonably utilized under different repeated transmission configurations and activation conditions.

It will be appreciated by those skilled in the art that 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, magnetic 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method for indicating a logical channel available cell limit, comprising:

the base station sends an indication, wherein the indication is indicated by the base station by using a medium access control unit (MAC CE), and after Packet Data Convergence Protocol (PDCP) of a Radio Link Control (RLC) entity corresponding to an RB or a radio bearer is activated or deactivated, whether a Radio Resource Control (RRC) signaling is started to configure a logic channel available cell limit for a logic channel corresponding to the RB or the RLC entity or not is indicated.

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 portion of the MAC CE has a length of 0 and comprises only a MAC sub-header, wherein the MAC sub-header format indicates cancellation of the logical channel available cell restriction using a specific logical channel identification LCID1 value or using a specific extended logical channel identification eclcd+lcid 1 value; using a specific LCID2 value or a specific eclcid + 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 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 deactivating PDCP retransmission while indicating that the RB is activated or deactivated and/or the RLC entity participates in retransmission.

6. The method of claim 5, wherein the RB ID and RLC entity indication part of the MAC CE are used to indicate that the RB is activated or deactivated and/or the RLC entity participates in the retransmission, and the MAC CE corresponds to a bit in the MAC sub-header to indicate whether to cancel the logical channel available cell restriction.

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

after the carrier aggregation CA repeated transmission is deactivated, canceling the available cell limit of a corresponding logic channel aiming at the RLC entity still activated in the medium access control MAC entity; or alternatively, the first and second heat exchangers may be,

after the data radio bearer DRB indicated by the MAC CE deactivates the retransmission, canceling the available cell restriction of the corresponding logical channel for the still activated RLC entity.

8. The method of claim 1 or 2, wherein the MAC CE includes a bit indication bitmap, the bit in the bitmap corresponding to an RB configured for PDCP retransmission, the MAC CE indicating whether to cancel a logical channel available cell restriction configured for RRC signaling after deactivating PDCP retransmission while indicating that the RB and/or RLC entity are involved in retransmission.

9. The method of claim 8 wherein a bitmap of the MAC CE is used to indicate duplicate transmissions of activated or deactivated RBs, the MAC CE indicating whether logical channel availability cell restrictions are canceled corresponding to bits in a MAC subheader.

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

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

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

13. A method for indicating a logical channel available cell limit, 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 the base station indication comprises:

16. The method of claim 15, wherein the MAC CE payload portion of the MAC CE has a length of 0 and comprises only a MAC subheader, wherein the MAC subheader format indicates cancellation of the logical channel availability cell restriction using a particular LCID1 value or using a particular ellid+lcid 1 value; using a specific LCID2 value or a specific eclcid + LCID2 value indicates that the logical channel available cell restriction is not cancelled.

17. The method of claim 13 or 14, wherein a base station indication is received, the indication being an indication that the MAC CE contains an RB ID and a corresponding RLC entity for the RB, the MAC CE indicating whether to cancel a logical channel available cell restriction of the RRC signaling configuration after activating or deactivating the RB and/or RLC entity to participate in the retransmission, and deactivating PDCP retransmission.

18. The method of claim 17, wherein an RB ID and RLC entity indication part of the MAC CE are used to indicate that an RB is activated or deactivated and/or that an RLC entity participates in the retransmission, and a bit in a corresponding MAC sub-header of the MAC CE is used to indicate whether to cancel a logical channel available cell restriction.

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

20. The method of claim 13 or 14, wherein receiving the base station indication that the MAC CE contains a bitmap with bits corresponding to RBs configured for PDCP retransmission, the MAC CE indicating whether to cancel the logical channel available cell restriction configured for RRC signaling after deactivating PDCP retransmission while indicating that RBs and/or RLC entities participate in retransmission.

21. The method of claim 20 wherein a bitmap of the MAC CE is used to indicate duplicate transmissions of activated or deactivated RBs, the MAC CE indicating whether logical channel availability cell restrictions are canceled corresponding to bits in a MAC subheader.

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

23. The method of claim 13 or 14, wherein the MAC CE includes an RB number, an RLC entity indication, and a cell limitation indication bit indicating whether to cancel a logical channel available cell limitation of the RRC signaling configuration after deactivating a part of the RLC entity.

24. The method of claim 23, wherein the MAC CE is indicated by a MAC subheader having a MAC CE length of 0, wherein the MAC subheader format is indicated using a particular LCID value or using a particular eclpid+lcid value, using an LCID or an eclpid+lcid value.

25. The method of claim 24, wherein the cell restriction indication bit of the MAC CE indicates:

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 of 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 comprises only a MAC subheader, wherein the MAC subheader format indicates that the logical channel available cell restriction is canceled using a particular LCID1 value or using a particular icld+lcid 1 value; using a specific LCID2 value or a specific eclcid + LCID2 value indicates that the logical channel available cell restriction is not cancelled.

30. The base station of claim 26 or 27, wherein the MAC CE includes an RB ID and a corresponding RLC entity indication for the RB, the MAC CE indicating whether to cancel the logical channel available cell restriction of the RRC signaling configuration after activating or deactivating the RB and/or the RLC entity to participate in the retransmission, and deactivating the PDCP retransmission.

31. The base station of claim 30, wherein the RB ID and RLC entity indication part of the MAC CE are used to indicate that the RB is activated or deactivated and/or the RLC entity participates in the retransmission, and the MAC CE corresponds to a bit in the MAC sub-header to indicate whether to cancel the logical channel availability cell restriction.

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

33. The base station of claim 26 or 27, wherein the MAC CE comprises a bitmap, the bits in the bitmap corresponding to RBs configured for PDCP retransmission, the MAC CE indicating whether logical channel available cell restrictions configured for RRC signaling are canceled after deactivating PDCP retransmission, while indicating that RBs and/or RLC entities are involved in retransmission are activated or deactivated.

34. The base station of claim 33 wherein a bitmap of the MAC CE is used to indicate duplicate transmissions of activated or deactivated RBs, the MAC CE indicating whether logical channel availability cell restrictions are canceled corresponding to bits in a MAC subheader.

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

36. The base station of claim 26 or 27 wherein the MAC CE includes an RB number, an RLC entity indication, and a cell restriction indication bit indicating whether to cancel the logical channel available cell restriction of the RRC signaling configuration after deactivating a portion of the RLC entity.

37. The base station of claim 36, wherein the MAC CE is indicated by a MAC subheader having a MAC CE length of 0, wherein the MAC subheader format is indicated using a particular LCID value or using a particular eclcid+lcid value, using an LCID or an eclcid+lcid value.

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

39. A logical channel availability cell restriction indication apparatus, 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 the base station indication comprises:

43. The terminal of claim 42, wherein the MAC CE payload portion of the MAC CE has a length of 0 and includes only a MAC subheader, wherein the MAC subheader format indicates cancellation of the logical channel available cell restriction using a specific LCID1 value or using a specific ellid+lcid 1 value; using a specific LCID2 value or a specific eclcid + LCID2 value indicates that the logical channel available cell restriction is not cancelled.

44. The terminal of claim 40 or 41, wherein a base station indication is received, the indication being an indication that the MAC CE contains an RB ID and a corresponding RLC entity for the RB, the MAC CE indicating whether to cancel a logical channel available cell restriction of the RRC signaling configuration after activating or deactivating the RB and/or RLC entity to participate in the retransmission, and deactivating PDCP retransmission.

45. The terminal of claim 44, wherein the RB ID and RLC entity indicating part of the MAC CE are used to indicate that the RB is activated or deactivated and/or the RLC entity participates in the retransmission, and the MAC CE corresponds to a bit in the MAC sub-header to indicate whether to cancel the logical channel availability cell restriction.

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

47. The terminal of claim 40 or 41, wherein receiving a base station indication that the MAC CE contains a bitmap with bits corresponding to RBs configured for PDCP retransmission, the MAC CE indicating whether logical channel available cell restriction configured for RRC signaling is canceled after deactivating PDCP retransmission while indicating that RBs and/or RLC entities participate in retransmission.

48. The terminal of claim 47, wherein a bitmap of the MAC CE is used to indicate duplicate transmissions of activated or deactivated RBs, and the MAC CE corresponds to bits in a MAC sub-header to indicate whether logical channel availability cell restrictions are canceled.

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

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

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

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

53. A logical channel availability cell restriction indication apparatus, 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.