WO2021037069A1

WO2021037069A1 - Transmission control method and apparatus

Info

Publication number: WO2021037069A1
Application number: PCT/CN2020/111424
Authority: WO
Inventors: 王婷婷
Original assignee: 展讯通信（上海）有限公司
Priority date: 2019-08-26
Filing date: 2020-08-26
Publication date: 2021-03-04
Also published as: CN110401963A

Abstract

Provided in the embodiments of the present application are a transmission control method and apparatus. The method comprises: receiving control signalling sent by a network device; and within a first duration, controlling, according to the control signalling, packet data convergence protocol (PDCP) duplication transmission of a terminal device, wherein the first duration is the effective duration of the control signalling. By means of controlling, according to the control signalling, the PDCP duplication transmission of the terminal device within the first duration, a decision issued by the network device within the first duration may not be covered, such that a resource utilization rate and overall system performance can be improved.

Description

Transmission control method and device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 2019107889832, and the application name is "Transmission Control Method and Device" on August 26, 2019, the entire content of which is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to communication technologies, and in particular, to a transmission control method and device.

Background technique

A new technology is introduced in 5G-Packet Data Convergence Protocol (PDCP) duplication transmission, in which PDCP duplication transmission can effectively improve the high reliability and low latency communication in 5G (Ultra Reliable Low Latency Communication) , URLLC) service reliability and reduce transmission delay.

At present, the control of PDCP repeated transmission in the prior art is mainly to send control signaling to the terminal device through the network device, where the control signaling is used to indicate which radio link control (Radio Link Control, RLC) entities in the terminal device can Data transmission is carried out, so as to realize the repeated transmission of PDCP according to the instructions of the control signaling.

However, the first control command carried in the control signaling sent by the network device and the second control command generated by the terminal device according to the preset conditions will cover each other. When the first control command carried in the control signaling sent by the network device is very fast When it is covered by the second control instruction, the utilization efficiency of the system resources will decrease and the performance will decrease.

Summary of the invention

The embodiments of the present application provide a transmission control method and device to overcome the problems of reduced utilization efficiency of system resources and performance degradation.

In the first aspect, an embodiment of the present application provides a transmission control method, including:

Receive control signaling sent by network equipment;

Within the first time length, the packet data aggregation protocol PDCP repeated transmission of the terminal device is controlled according to the control signaling, and the first time length is the effective time length of the control signaling.

In a possible design, within the first time period, before the repeated transmission of the packet data aggregation protocol PDCP of the terminal device is controlled according to the control signaling, the method further includes:

Obtain the first duration.

In a possible design, the control signaling includes the first duration;

The obtaining the first duration includes:

Acquire the first duration in the control signaling.

In a possible design, the obtaining the first duration includes:

Receiving first signaling sent by the network device, where the first signaling includes the first duration;

Acquire the first duration in the first signaling.

In a possible design, the obtaining the first duration includes:

The first time length is obtained from an agreed agreement, where the first time length is included in the agreed agreement.

In a possible design, the first duration is the duration corresponding to the terminal device; or

The first duration is the duration corresponding to the radio bearer RB, where any one of the control signaling corresponds to at least one of the RBs; or

The first duration is the duration corresponding to the control signaling.

In a possible design, the first duration is a duration in numerical form; or

The first duration is infinity; or

The first time length is a time length corresponding to a target index value, wherein the target index value is an index value selected from a plurality of indicator index values of preset time lengths.

In a possible design, the control signaling is a media access control layer MAC control element CE.

In a possible design, the controlling the repeated transmission of the packet data aggregation protocol PDCP of the terminal device according to the control signaling includes:

According to the indication information included in the MAC CE, the PDCP repeated transmission function status of the radio link control RLC entity corresponding to the target RB is updated to be activated or deactivated, wherein the target RB is configured in the terminal device At least one RB of the PDCP repeated transmission function, and the indication information is used to respectively indicate the PDCP repeated transmission function status of each RLC entity;

For any one of the target RBs, copy the PDCP protocol data unit PDU to the target number of RLC entities and respectively deliver them to the RLC entities in the active state, where the target number is the number of the RLC entities in the active state;

Each of the RLC entities in the active state respectively transmits multiple copies of the PDCP PDU.

In a possible design, the method further includes:

Within the time range of the first duration, determine in real time whether the terminal device receives a new control signaling sent by the network device;

If yes, the new control signaling is used to cover the current control signaling, and the PDCP repeated transmission of the terminal device is controlled according to the new control signaling within a second time period, where the second time period is the new The effective duration of the control signaling.

In a possible design, after the first duration ends, the method further includes:

If the current time is not within the time range of the effective duration of any control instruction, determining whether the terminal device generates an autonomous control instruction for controlling the PDCP repeated transmission of the terminal device;

If yes, control the PDCP repeated transmission of the packet data aggregation protocol of the terminal device according to the autonomous control command generated by the terminal device.

In a second aspect, an embodiment of the present application provides a transmission control device, including:

The receiving module is used to receive the control signaling sent by the network device;

The control module is configured to control the PDCP repeated transmission of the packet data aggregation protocol of the terminal device according to the control signaling within a first time period, and the first time period is the effective time period of the control signaling.

In a possible design, the control module is also used to:

In the first time period, the first time period is acquired before the repeated transmission of the packet data aggregation protocol PDCP of the terminal device is controlled according to the control signaling.

In a possible design, the control signaling includes the first duration;

The control module is specifically used for:

Acquire the first duration in the control signaling.

In a possible design, the control module is specifically used for:

Acquire the first duration in the first signaling.

In a possible design, the control module is specifically used for:

In one possible design,

The first duration is the duration corresponding to the terminal device; or

The first duration is the duration corresponding to the control signaling.

In one possible design,

The first duration is a duration in numerical form; or

The first duration is infinity; or

In a possible design, the control module is specifically used for:

In a possible design, the control module is also used to:

After the end of the first duration, if the current time is not within the time range of the effective duration of any control instruction, determining whether the terminal device generates an autonomous control instruction for controlling PDCP repeated transmission of the terminal device;

In a third aspect, an embodiment of the present application provides a transmission control device, including:

Memory, used to store programs;

The processor is configured to execute the program stored in the memory, and when the program is executed, the processor is configured to execute the method described in the above first aspect and any of the various possible designs of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the above-mentioned first aspect and any of the various possible designs of the first aspect method.

The embodiments of the present application provide a transmission control method and device. The method includes: receiving control signaling sent by a network device. In the first duration, the packet data aggregation protocol PDCP repeated transmission of the terminal equipment is controlled according to the control signaling, and the first duration is the effective duration of the control signaling. By controlling the PDCP repeated transmission of the terminal device according to the control signaling in the first time period, the decision issued by the network device in the first time period will not be covered, thereby improving resource utilization efficiency and overall system performance.

Description of the drawings

Figure 1 is a schematic diagram of interaction between terminal equipment and network equipment;

Figure 2 is a schematic diagram of a PDCP repeated transmission model in a CA scenario;

Figure 3 is a schematic diagram of a PDCP repeated transmission model in a DC scenario;

Figure 4 is a schematic diagram of a PDCP repeated transmission model in a multi-connection scenario;

FIG. 5 is a first flowchart of a transmission control method provided by an embodiment of this application;

FIG. 6 is a second flowchart of a transmission control method provided by an embodiment of this application;

FIG. 7 is a schematic diagram of the effect of the first duration of the action object provided by the embodiment of this application;

FIG. 8A is a schematic diagram of the realization combination of the first duration provided by an embodiment of the application; FIG.

FIG. 8B is a schematic diagram of the first combination of the first duration provided by an embodiment of the application; FIG.

FIG. 8C is a schematic diagram of a second combination of the first duration provided by an embodiment of the application;

FIG. 9 is a third flowchart of a transmission control method provided by an embodiment of this application;

FIG. 10 is a schematic structural diagram of a transmission control device provided by an embodiment of the application;

FIG. 11 is a schematic diagram of the hardware structure of a transmission control device provided by an embodiment of the application.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

Before introducing the transmission control method provided by this application, we first introduce PDCP duplication in detail. Specifically, the 5G NR (next generation Radio) system mainly supports the following three types of services: eMBB (enhanced Mobile) Broadband, enhanced broadband communications), mMTC (massive MachineType Communications), URLLC (Ultra-Reliable and Low Latency Communications, high reliability and low latency communications).

Among them, for URLLC, due to its relatively high requirements for delay and reliability, a solution currently given by 3GPP is to introduce a PDCP duplication (PDCP repeated transmission) mechanism, that is, to transmit the same PDCP layer through multiple paths PDU (Protocol Data Unit) improves transmission reliability and reduces transmission delay through multiple transmission gains.

In a specific implementation process of PDCP repeated transmission, at the PDCP layer of the sender, for example, a PDCP PDU can be copied into two identical copies and sent to two different RLC entities respectively, where different RLC entities can correspond to different The original data and the copied data can be transmitted through different cells respectively. If the receiving end successfully receives the original data and the copied data, the PDCP layer at the receiving end will pair the same two successfully received One PDCP PDU, delete one of them and retain only one data, that is to say, copy the same data packet into the same two copies and transmit them through two different links, thereby improving the reliability of data transmission It is worth noting that the above-mentioned copying into the same two copies is only an exemplary description. In the specific implementation process, the specific number of copies of the data can be selected according to requirements.

Specifically, when using PDCP repetitive transmission to improve the reliability of data transmission, it is necessary to configure the PDCP repetitive transmission function for the RB first. One RB corresponds to a PDCP entity. Only when the RB is configured with the PDCP repetitive transmission function can the RB correspond to the multiple Each RLC entity transmits the original PDCP PDU and the copied PDCP PDU respectively. The following describes the implementation process of configuring the PDCP repeated transmission function for the RB with reference to Figure 1. Figure 1 is a schematic diagram of the interaction between terminal equipment and network equipment, as shown in Figure 1. Shown:

The network device can send a radio resource control (Radio Resource Control, RRC) message to the terminal device. The RRC message can contain the configuration information of the RB’s PDCP repeat transmission function. Specifically, the RRC message will indicate that a PDCP repeat transmission function is configured. The RB establishes at least one additional additional RLC entity for repeated transmission, so that the original PDCP PDU and the copied PDCP PDU can be transmitted separately through different RLC entities. In an optional embodiment, the RRC message may also Indicate the cell group ID and logical channel ID (LCID) of the RLC entity; or, the RRC message can also set the initial state of the repeated transmission function (active or active) for each RB configured with the PDCP repeated transmission function. Not activated).

Here is a brief introduction to the configuration information contained in the RRC message. The duplication configuration information is contained in a large RRC message. Specifically, this RRC message can contain the configuration information of many RBs, or it may contain the current configuration information. The configuration information of all RBs of the terminal equipment, and the configuration information of each RB contains many aspects of data, and the function information used for duplication is only one or two fields in the configuration information. When the field appears, it means that the RB is configured with duplication. If it does not appear, it means that the RB is not configured with duplication.

In addition, referring to Figure 1, it can be seen that the RB in this embodiment may be a data radio bearer (Date Radio Bearer, DRB) or a signaling radio bearer (Signalling Radio Bearer, SRB). Specifically, SRB is only used to transmit RRC messages and non- Non-Access Stratum (NAS) messages, and DRB is used to carry user data. One RB can correspond to one PDCP entity. Regardless of whether it is SRB or DRB, the data in the PDCP layer includes two types: PDCP Data PDU and PDCP Control PDU, where PDU represents a data unit, which can be understood as a data packet, and the data packet continuously enters the PDCP layer from the upper layer or the lower layer. Once the duplication function is activated, all entries will be blocked. The PDUs to the PDCP layer are copied and sent separately.

Therefore, based on the above introduction, it can be understood that the RB described below can be a DRB, but the possibility that the RB can be an SRB is not ruled out in this application. According to the implementation of SRB transmission, it is similar to DRB, so RB is used in the following. Introduction, covering both possibilities together.

After briefly introducing the implementation mechanism of the PDCP repeated transmission function for RB configuration, the following describes two different application scenarios of PDCP repeated transmission with reference to Figure 2 and Figure 3. Specifically, there are two application scenarios for PDCP repeated transmission, respectively It is Carrier Aggregation (CA) and Dual Connectivity (DC).

Figure 2 is a schematic diagram of a PDCP repeated transmission model in a CA scenario, and Figure 3 is a schematic diagram of a PDCP repeated transmission model in a DC scenario.

For the PDCP repeated transmission model in the CA scenario, as shown in Figure 1, one RB in the PDCP layer corresponds to a PDCP entity, which is used to carry a PDCP PDU. It is assumed that the current RB corresponds to the PDCP of RLC entity 1 and RLC entity 2 If the transmission function is active, both RLC entity 1 and RLC entity 2 can be used to transmit data. One RLC entity corresponds to a logical channel (Logical Channel, LCH), and it can be transmitted separately through multiple logical channels at the RLC layer. , Where each LCH corresponds to an RLC entity, as shown in Figure 2.

For the PDCP repeated transmission model in the CA scenario, multiple RLC entities corresponding to the RB correspond to one MAC entity, and data from multiple different RLC entities are respectively mapped to different carriers for transmission.

It is worth noting that different RLC entities correspond to different cells, because the purpose of repeated PDCP transmission is to multiplex and improve the reliability of data transmission. Therefore, when different RLC entities transmit data, the corresponding communication cell must be guaranteed to be Differently, referring to FIG. 2, the RLC entity 1 can correspond to cell 1 and cell 2, and the RLC entity 2 can correspond to cell 3, cell 4, and cell 5.

For the PDCP repeated transmission model in the DC scenario, as shown in Figure 2, it can be determined that the PDCP repeated transmission model in the DC scenario is similar to the PDCP repeated transmission model in the CA scenario. The only difference is that the RB corresponds to more When each RLC entity is mapped to different MAC entities, it is natural to map data from multiple different RLC entities to different carriers for transmission. The rest of the implementation manners are similar and will not be repeated here.

On the basis of the use scenarios described in Figures 2 and 3 above, there is currently an enhanced multi-connectivity implementation of the PDCP repeated transmission function. The following is an implementation of multi-connectivity in conjunction with Figure 4 To illustrate, Figure 4 is a schematic diagram of a PDCP repeated transmission model in a multi-connection scenario, as shown in Figure 4:

Under the premise of data transmission through at most two network nodes, the PDCP repeated transmission of the DC scene and the CA scene can be combined at the same time, so that one piece of data can be transmitted through more than two links for more than two copies.

Specifically, referring to Figure 4, where PDCP1 corresponds to RB1, it can be seen that each RLC entity of RB1 corresponds to the same MAC entity 1, so RB1 corresponds to the PDCP repeated transmission function configured in the CA scenario; and PDCP2 corresponds to RB2 , It can be seen that RLC7 and RLC8 of RB2 correspond to a MAC entity 1, RLC1～, RLC2～ and RLC3～ correspond to a MAC entity 2, so if it is RLC7 and RLC8, or RLC1～, RLC2～ and RLC3～ In other words, RB2 corresponds to the PDCP repetitive transmission function configured in the CA scenario, but RLC8 and RLC1~ of RB2 correspond to two different MAC entities, so if you use RLC8 and RLC1~ to say (or RLC1~ and RLC7, etc.), RB2 corresponds to the PDCP repeated transmission function configured in the DC scenario.

It should be noted that the cells corresponding to different MAC entities must be different. Similarly, the RLC entities corresponding to different MAC entities must also be different. Therefore, RLC1 and RLC shown in Figure 4 are completely different. Different RLC entities, as well as cell group 1 and cell group 1~ are also completely different cells, and the remaining RLC2 and RLC2~ etc. are also similar, and they are all completely different, and will not be repeated here.

During data transmission, one piece of data can be transmitted with more than two copies through more than two logical channels. It is worth noting that combined with the above introduction, we can know that each RLC entity of PDCP1 corresponds to a different cell group. At the same time, each RLC entity of PDCP2 corresponds to a different cell group, but the cells in the cell group corresponding to the RLC entity of PDCP1 and the RLC entity of PDCP2 can partially or completely overlap, that is, as long as it is ensured that the transmission for the same piece of data corresponds to Different cells are sufficient. Referring to Figure 4, the cell groups corresponding to each RLC entity of PDCP1 are different, and the cell groups corresponding to each RLC entity of PDCP2 are also different, but the cell group 1 corresponding to RLC entity 1 of PDCP1 The cells in the cell group 7 corresponding to the RLC entity 7 of PDCP2 may partially overlap or completely overlap.

After introducing the mechanism and usage scenarios of PDCP repeated transmission in the above embodiments, it should be noted that in order to achieve PDCP repeated transmission, it is also necessary to control the state of the PDCP repeated transmission function of the RLC entity, where the state can be activated or Inactive. When the PDCP repeat transmission function status of the RLC entity is activated, it indicates that data can be transmitted through the current RLC entity. When the PDCP repeat transmission function status of the RLC entity is inactive, it indicates that data cannot be transmitted through the current RLC entity. .

Specifically, the current control mechanism for PDCP repeated transmission mainly includes the following two implementation methods:

1) Network dynamic control mechanism

The network device sends control signaling to the terminal device. The control signaling includes a bitmap, which includes multiple bits, and each bit corresponds to an RB configured with the PDCP function. In a possible implementation, the bit corresponding to a certain RB is indicated as 1, which means the RB is activated, and the corresponding bit is indicated as 0, which means the RB is deactivated; or, in another possible realization In the mode, 0 means deactivation, and 1 means deactivation.

At the same time, all RLC entities corresponding to the RB configured with the PDCP function have their respective bits to indicate whether they are activated or deactivated. In a possible implementation, 1 means activation and 0 means deactivation; or, it can Use at least one bit to indicate the RLC entity that needs to be activated. For example, the control signaling sent for RB1 includes: 001, 010, and 100, which means that the RLC entities that need to be activated currently are RLC1, RLC2, and RLC4, and other possible implementations The method can also be selected according to actual requirements. For example, at least one bit can be used in the control signaling to indicate the RLC entity that needs to be deactivated, and the rest of the implementation methods will not be repeated here.

Among them, after a certain RB configured with the PDCP repeated transmission function is activated, the PDCP layer will copy the data packet and send the same two PDCP PDUs to the two RLC entities corresponding to the RB. These two RLC entities The original PDCP PDU and the copied PDCP PDU will be sent separately.

In addition, after a certain RB is deactivated, the corresponding restriction between the corresponding logical channel (LCH) and the carrier is cancelled, and the PDCP layer at the transmitting end will not copy the new data packet and transfer it to the original The RLC entity sends new data instead of sending new data to the additional RLC entity. The PDCP entity at the sending end will notify the additional RLC entity to cancel the buffered data in the additional LCH. It is understandable that it is also equivalent to the additional RLC entity being removed activation.

2) Threshold-based autonomous control mechanism for terminal equipment

The network device provides the terminal device with a control threshold (or control condition) for controlling activation or deactivation. The terminal device measures the variables corresponding to the control threshold. If the threshold configured by the network device is met, the terminal device will The corresponding RLC entity can be activated/deactivated by itself.

Among them, the control threshold may include the following, for example:

A. Channel status

B. MAC layer hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ), or RLC automatic repeat request (Automatic Repeat reQuest, ARQ) feedback

C. Packet loss rate

D. Packet transmission delay

Taking the above control threshold B as an example, assuming that the packet loss rate detected by the current terminal device is greater than the preset packet loss rate, it can be determined that packet loss events frequently occur in the current RLC logical channel, which indicates that the current RLC entity is not suitable for For data transmission, set the current RLC entity's PDCP repeated transmission status to deactivated; then take the above control threshold A as an example for illustration. Assuming that the current channel status is the preset status, the current RLC logical channel can be determined It is suitable for data transmission, so as to set the PDCP repeated transmission status of the current RLC entity to active, where the preset status can be, for example, L1, or L3 filtered RSRP/RSRQ threshold, or path loss, etc. It is understandable that the above The control threshold is only an exemplary introduction and is not the only limitation. The specific implementation of the control threshold can be set according to actual needs. At the same time, the control threshold can be selected from one of them, or any combination, etc., and this embodiment does not make this description. limited.

Based on the introduction of the above two control mechanisms, it should be noted that the network dynamic control mechanism is a necessary feature of the UE, that is, it can be realized without any configuration, but the autonomous control mechanism based on the threshold of the terminal device is supplementary and configurable Therefore, the network device can selectively configure the control mechanism for the terminal device, and the network device can also use the RRC message or other control signaling to make the control mechanism effective or invalid.

If a DRB configured with the PDCP repeat transmission function is configured with an autonomous control mechanism based on the threshold of the terminal device, the control command issued by the network device and the control command independently generated by the terminal device will cover each other, because the terminal device autonomously generates The control command may only take into account its own situation, but the control command issued by the network device may coordinate the entire network situation, so the network device will hope that the decision issued by the control signaling by itself will be effective within a certain period of time. To be covered or not to be covered quickly, and quickly covering the control commands issued by the network equipment will reduce the efficiency of resource utilization and the overall system performance.

Based on the above problems, this application provides a transmission control method to improve resource utilization efficiency and overall system performance. The transmission control method provided by this application will be described in detail below with reference to FIG. 5, which is provided by an embodiment of this application. Flowchart 1 of the transmission control method, as shown in Figure 5, the method includes:

S501. Receive control signaling sent by a network device.

In this embodiment, the network device may include, but is not limited to, a remote node in the room, a wireless local area network access point (Wireless Local Area Networks Access Point, WLAN AP), a base station, etc. The specific implementation of the network device can be based on actual conditions. The selection is required as long as the network equipment can be used for network transmission and can send control signaling.

At the same time, the control signaling sent by the network device is used to indicate the status of the PDCP repeated transmission function of the terminal device. The control signaling may be, for example, a Medium Access Control (MAC) control element (CE). Or, it may also be any form of signaling message that can be used to indicate status, such as an RRC message, which is not particularly limited in this embodiment.

As an example, the terminal device may be a computer device, a tablet computer, or a smart phone, etc., or it may also be a mobile terminal (Mobile Terminal) or a mobile terminal device, a mobile phone (or “cellular” phone), a vehicle-mounted processing device, or Mobile computers, such as portable computers, pocket computers, or handheld computers, etc., are not limited in this application.

S502. In the first time period, control repeated transmission of the packet data aggregation protocol PDCP of the terminal device according to the control signaling, and the first time period is the effective time period of the control signaling.

In this embodiment, a first time length is set for the control signaling. Within the first time length, the PDCP packet data aggregation protocol that controls the terminal equipment according to the control signaling is repeatedly transmitted, that is to say, the terminal equipment will not be transmitted in the first time length. The control instruction generated or the control instruction generated by the terminal device will not work. Therefore, the control information sent by the network device will not be overwritten during the first period of time.

In a possible implementation manner, a timer can be set for the control signaling, where the timer carries a first duration, and the first duration is used to indicate the effective duration of the control signaling. Within the effective duration of the control signaling, the terminal The threshold-based autonomous control mechanism of the device is invalid. Therefore, the terminal device will not automatically generate control commands within the first time period, and naturally it will not cover the control signaling decisions of the network device, thereby improving the efficiency of resource utilization and the overall System performance.

The transmission control method provided by the embodiment of the present application includes: receiving control signaling sent by a network device. In the first duration, the packet data aggregation protocol PDCP repeated transmission of the terminal equipment is controlled according to the control signaling, and the first duration is the effective duration of the control signaling. By controlling the PDCP repeated transmission of the terminal device according to the control signaling in the first time period, the decision issued by the network device in the first time period will not be covered, thereby improving resource utilization efficiency and overall system performance.

On the basis of the above-mentioned embodiment, the control signaling in this application can be MAC CE, then the control signaling is specifically MAC CE below, and the transmission control method provided by this application will be further detailed in conjunction with Figure 6 to Figure 8. Introduced, FIG. 6 is the second flow chart of the transmission control method provided by the embodiment of the application, FIG. 7 is the schematic diagram of the effect of the first duration provided by the embodiment of the application, and FIG. 8A is the first duration provided by the embodiment of the application. FIG. 8B is a schematic diagram of the first combination of the first duration provided in an embodiment of this application, and FIG. 8C is a schematic diagram of the second combination of the first duration provided in an embodiment of this application.

As shown in Figure 6, the method includes:

S601. Receive MAC CE.

Among them, the implementation of S601 is the same as that of S501, except that the control signaling in S601 is specifically MAC CE, so the detailed implementation of S601 will not be repeated here.

S602. Acquire the first duration.

In this embodiment, the acquisition of the first duration can be separately introduced in terms of acquisition methods, role objects, and implementation forms. It should be noted that in this embodiment, it is an implementation method "MAC CE" that specifically combines control signaling. In the introduction, the other possible implementations of the control signaling are similar, and will not be repeated in this article. Therefore, the MAC CE in the following is not the only restriction on the control signaling.

First, explain how to obtain the first duration:

In a possible implementation manner, if the first duration is included in the MAC CE, the first duration is acquired in the control signaling. Specifically, the first duration may be a field added to the MAC CE, or information carried by the MAC CE, and so on.

In another possible implementation manner, first signaling sent by a network device is received, where the first signaling includes the first duration, and the first duration is acquired in the first signaling. Specifically, the first signaling is a separate signaling independent of the MAC CE, that is, the network device sends a separate signaling message to indicate the effective duration of the MAC CE.

In another possible implementation manner, the first duration is obtained from the agreed agreement, where the agreed agreement includes the first duration. Specifically, the agreed protocol is a pre-arranged agreement between the network device and the terminal device, and the first duration is included in the agreed protocol.

After introducing the method of obtaining the first duration, the following describes the target of the first duration in conjunction with Figure 7:

In a possible implementation manner, the first duration is the duration corresponding to the terminal device, that is to say, the entire terminal device adopts the same first duration, which can be understood with reference to the leftmost part of FIG. The included RBs and each RLC entity corresponding to each RB correspond to the same first duration, and the same first duration is indicated by gray shading in FIG. 7.

In another possible implementation manner, the first duration is the duration corresponding to the RB, where any one of the control signaling corresponds to at least one RB. Assuming that the current MAC CE corresponds to two RBs, the MAC CE may, for example, The first N bits are used to indicate RB1, and the last M bits are used to indicate RB2. Where N and M are integers, RB1 can use a first duration, and RB2 can use another first duration. You can refer to Figure 7 to understand as long as one The first duration of the RB is the same. It is worth noting that the RB introduced here is an RB configured with a PDCP repeated transmission function.

In another possible implementation, the first duration is the duration corresponding to the control signaling. Similarly, it is assumed that the current MAC CE corresponds to two RBs, because in the current implementation, the first duration needs to be the control signaling. Let the corresponding duration, all the RBs indicated by the control signaling correspond to the same first duration. It can be understood with reference to the rightmost side of Figure 7 that RB1 and RB2 use the same first duration. Similarly, the RBs introduced here It is an RB configured with PDCP repeated transmission.

After introducing the way to obtain the first duration, the following describes the realization of the first duration:

In a possible implementation manner, the first duration is a duration in numerical form, for example, a value of 90 directly, and the unit of the first duration may be a pre-appointed unit, or may be sent in real time, for example, 90 milliseconds.

In another possible implementation, the first duration is infinity. When the first duration is set to infinity, it indicates that the current MAC CE corresponding control command is permanently effective, that is to say, the terminal device corresponding to the current RB is based on the threshold The autonomous control mechanism is permanently banned.

In another possible implementation manner, the first time length is the time length corresponding to the target index value, where the target index value is an index value selected from a plurality of preset time length indicator index values, for example, how many times can be preset There are two preset durations, such as 3 seconds, 90 milliseconds, 15 minutes, etc., where each preset duration corresponds to its own indicator index value. When needed, directly select the index value to obtain the target index value. When the duration is long, the content obtained is also the target index value, and then the duration corresponding to the target index value can be obtained.

Those skilled in the art can understand that the above-mentioned introductions to the first time duration acquisition path, action object, and implementation form are all exemplary descriptions, and the specific implementation methods of the acquisition approach, action object, and implementation form are not the only ones introduced above. There are several, among which various possible implementation manners can be selected according to actual requirements, which will not be repeated in this embodiment.

It is worth noting that, in this embodiment, the various possible implementations of the first time duration's acquisition path, action object, and implementation form can all be selected from each of the three parts and combined arbitrarily, and the combination can be seen in FIG. 8A. , The following three parts are combined together to explain several possible implementations of obtaining the first duration:

1) As shown in Figure 8B

The first duration is the duration corresponding to the terminal device, which is the duration in numerical form. At the same time, the MAC CE includes the first duration, and the first duration is obtained from the MAC CE, indicating that the MAC CE carries the duration in numerical form Field, after receiving the MAC CE, the terminal device obtains the duration field in numerical form from the MAC CE, and makes the entire terminal device adopt the first duration;

2) As shown in Figure 8C

The first duration is the duration corresponding to the control signaling, which is the duration corresponding to the target index value. At the same time, the terminal device receives the first signaling sent by the network device. If the first signaling includes the first duration, then the first signaling In this implementation mode, the content included in the first signaling sent by the network device is the target index value. After receiving the first signaling, the terminal device first obtains the target index value, and then according to The target index value is searched in the indicator index value of the preset duration, so as to obtain the first duration corresponding to the target index value. It can be understood that the preset duration is pre-appointed by the network device and the terminal device, so the terminal device can The first duration is determined according to the target index value, and at the same time, the first duration acts on all RBs corresponding to the control signaling.

The remaining various possible implementations can be obtained according to the combination on the left side of Fig. 8, which is not limited in this embodiment. If the three parts of the first duration are also extended to other implementations, more correspondingly can be extended. The combination.

S603. According to the indication information included in the MAC CE, update the PDCP repeated transmission function status of the radio link control RLC entity corresponding to the target RB to activated or deactivated, where the target RB is the terminal device configured with the PDCP repeated transmission function The indication information is used to indicate the status of the PDCP repeated transmission function of each RLC entity.

Among them, the MAC CE contains indication information. The indication information is used to indicate the status of the PDCP repeated transmission function of each RLC entity, where the status can be activated or inactive. Refer to the introduction in the above-mentioned embodiment, and the indication information can be, for example, 1. Indicate the activation of the RLC entity, and use 0 to identify the deactivation of the RLC entity; alternatively, the decimal number corresponding to the binary coded 01 can also be used to indicate the activated or deactivated RLC entity. It should be emphasized that each RLC entity in this embodiment is Corresponding to have their own instructions.

Specifically, at least one RB configured with the PDCP repetitive transmission function in the terminal device is determined as the target RB, so that the PDCP repetitive transmission function status of the RLC entity corresponding to the target RB can be updated to active according to the indication information included in the MAC CE Or deactivate for subsequent data transmission.

S604. For any target RB, copy the PDCP protocol data unit PDU to the target quantity and respectively deliver them to the RLC entities in the activated state, where the target quantity is the number of the RLC entities in the activated state.

Each target RB corresponds to the transmission of a PDCP PDU. The following describes any one of the target RBs. The number of active RLC entities in the current target RB is the target number, and each RLC entity in the active state can be used For data transmission, the PDCP PDU is copied to the target number and delivered to the RLC entity in the active state.

S605. In the first time period, each RLC entity in the active state transmits multiple PDCP PDUs respectively.

Specifically, each RLC entity in the active state transmits multiple PDCP PDUs respectively, and the network device of the transmission control command is issued, so the effective duration is the first duration.

The transmission control method provided by the embodiment of the present application includes: receiving control signaling sent by the MAC CE. Get the first duration. According to the indication information included in the MAC CE, the PDCP repetitive transmission function status of the radio link control RLC entity corresponding to the target RB is updated to active or deactivated, where the target RB is at least one of the terminal equipment configured with the PDCP repetitive transmission function. One RB, the indication information is used to respectively indicate the PDCP repeated transmission function status of each RLC entity. For any target RB, the PDCP protocol data unit PDU is copied to the target quantity and respectively delivered to the RLC entity in the activated state, where the target quantity is the number of the RLC entity in the activated state. In the first time period, each RLC entity in the active state transmits multiple PDCP PDUs respectively. By controlling the PDCP repeated transmission of the terminal device according to the MAC CE within the first duration range, the resource utilization efficiency and overall system performance can be improved. At the same time, the first duration can be obtained through various combinations, thereby extending the first duration. The method of time length enhances its applicability and universality.

On the basis of the above embodiment, when the control signaling takes effect within the first time period, the network device may also generate new control signaling according to the current network status, device connection status, etc., so that the overall resource From the perspective of allocation, readjust the RLC entity activated by the RB. This situation will be described below with reference to FIG. 9, which is the third flow chart of the transmission control method provided by the embodiment of this application.

As shown in Figure 9, the method includes:

S901: Within the time range of the first duration, determine in real time whether the terminal device receives a new control signaling sent by the network device, if yes, execute S902, and if not, execute S903.

In this embodiment, it is only considered whether a new control instruction is received within the time range of the first duration, because the control instruction received outside the time range of the first duration is essentially the same as the control signaling in step 501. It is the same, it can be directly indicated.

S902. The new control signaling is used to cover the current control signaling, and the PDCP repeated transmission of the terminal device is controlled according to the new control signaling within a second time period, where the second time period is the effective time period of the new control signaling.

Specifically, if it is determined that a new control signaling sent by a network device is received, because the new control command is newly determined according to the current network status, the new control command issued by the network device must be more in line with the current resource allocation situation Therefore, the new control signaling is used to cover the current control signaling, and the PDCP repeated transmission of the terminal equipment is controlled according to the new control signaling within the second time period. The second time period is the effective time period of the new control signaling. The implementation of the new control instruction is similar to the original control instruction, and will not be repeated here.

Among them, the use of new control signaling to cover the current control signaling class can be understood as when the new control command is received, the first duration of the original control command has ended, and the terminal is directly controlled according to the new control command. The PDCP transmission of the device is repeated.

S903. Continue to control the PDCP repeated transmission of the terminal device according to the original control signaling.

In the transmission control method provided by the embodiments of the present application, when it is determined that the terminal device receives a new control signaling sent by the network device within the first time period, the new control signaling is used to cover the current control signaling, and In the second time period, the PDCP repeated transmission of the terminal device is controlled according to the new control signaling, and the second time period is the effective time period of the new control signaling, so that the overall resource allocation situation is more reasonable and the transmission efficiency of the overall system is increased.

On the basis of the above-mentioned embodiment, after the end of the first duration, the terminal device equipped with the threshold-based autonomous control mechanism of the terminal device can automatically generate the control command. Specifically, if the current time is not in the effective duration of any control command Within the time range, it is determined whether the terminal device generates an autonomous control command for controlling the PDCP repeated transmission of the terminal device. If so, the terminal device's packet data aggregation protocol PDCP repeated transmission is controlled according to the autonomous control command generated by the terminal device.

Specifically, when the terminal device measures the variables corresponding to the control threshold and determines that the measured value meets the control threshold, it generates an autonomous control instruction for controlling the PDCP repeated transmission of the terminal device. In this embodiment, the network device does not control the terminal. When the device's PDCP repeated transmission, the terminal device adopts the threshold-based autonomous control mechanism to control the PDCP repeated transmission function, so as to realize the flexibility of PDCP repeated transmission.

FIG. 10 is a schematic structural diagram of a transmission control device provided by an embodiment of the application. As shown in FIG. 10, the device 100 includes: a receiving module 1001 and a control module 1003.

The receiving module 1001 is used to receive control signaling sent by a network device;

The control module 1002 is configured to control the PDCP repeated transmission of the packet data aggregation protocol of the terminal device according to the control signaling within a first time period, where the first time period is the effective time period of the control signaling.

In a possible design, the control module 1002 is also used to:

In the first time period, the first time period is acquired before repeated transmission of the packet data aggregation protocol PDCP of the terminal device is controlled according to the control signaling.

In a possible design, the control signaling includes the first duration;

The control module 1002 is specifically used for:

Acquire the first duration in the control signaling.

In a possible design, the control module 1002 is specifically used for:

Acquire the first duration in the first signaling.

In a possible design, the control module 1002 is specifically used for:

In one possible design,

The first duration is the duration corresponding to the terminal device; or

The first duration is the duration corresponding to the control signaling.

In one possible design,

The first duration is a duration in numerical form; or

The first duration is infinity; or

In a possible design, the control module 1002 is specifically used for:

In a possible design, the control module 1002 is also used to:

The device provided in this embodiment can be used to implement the technical solutions of the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here in this embodiment.

FIG. 11 is a schematic diagram of the hardware structure of a transmission control device provided by an embodiment of the application. As shown in FIG. 11, the transmission control device 110 of this embodiment includes a processor 1101 and a memory 1102;

The memory 1102 is used to store computer execution instructions;

The processor 1101 is configured to execute computer-executable instructions stored in the memory to implement each step executed by the transmission control method in the foregoing embodiment. For details, refer to the relevant description in the foregoing method embodiment.

Optionally, the memory 1102 may be independent or integrated with the processor 1101.

When the memory 1102 is independently provided, the transmission control device further includes a bus 1103 for connecting the memory 1102 and the processor 1101.

The embodiment of the present application also provides a computer-readable storage medium in which computer-executable instructions are stored. When the processor executes the computer-executed instructions, the transmission control method executed by the above transmission control device is implemented. .

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division, and there may be other divisions in actual implementation, for example, multiple modules can be combined or integrated. To another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or modules, and may be in electrical, mechanical or other forms.

The above-mentioned integrated modules implemented in the form of software functional modules may be stored in a computer readable storage medium. The above-mentioned software function module is stored in a storage medium and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) execute the various embodiments of this application Part of the method.

It should be understood that the foregoing processor may be a central processing unit (English: Central Processing Unit, abbreviated as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviated as: DSP), and application-specific integrated circuits. (English: Application Specific Integrated Circuit, referred to as ASIC) etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the application can be directly embodied as being executed and completed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

The memory may include a high-speed RAM memory, or may also include a non-volatile storage NVM, such as at least one disk storage, and may also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disk.

The bus can be an Industry Standard Architecture (ISA) bus, Peripheral Component (PCI) bus, or Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

The above-mentioned storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Except programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

A person of ordinary skill in the art can understand that all or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware. The aforementioned program can be stored in a computer readable storage medium. When the program is executed, it executes the steps including the foregoing method embodiments; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. range.

Claims

A transmission control method, characterized in that it comprises:

Receive control signaling sent by network equipment;

Within the first time length, the packet data aggregation protocol PDCP repeated transmission of the terminal device is controlled according to the control signaling, and the first time length is the effective time length of the control signaling.
The method according to claim 1, characterized in that, before the repeated transmission of the packet data aggregation protocol PDCP of the terminal device is controlled according to the control signaling within the first time period, the method further comprises:

Obtain the first duration.
The method according to claim 2, wherein the control signaling includes the first duration;

The obtaining the first duration includes:

Acquire the first duration in the control signaling.
The method according to claim 2, wherein said obtaining said first duration comprises:

Receiving first signaling sent by the network device, where the first signaling includes the first duration;

Acquire the first duration in the first signaling.
The method according to claim 2, wherein said obtaining said first duration comprises:

The first time length is obtained from an agreed agreement, where the first time length is included in the agreed agreement.
The method according to any one of claims 1-5, characterized in that,

The first duration is the duration corresponding to the terminal device; or

The first duration is the duration corresponding to the radio bearer RB, where any one of the control signaling corresponds to at least one of the RBs; or

The first duration is the duration corresponding to the control signaling.
The method according to any one of claims 1-6, characterized in that,

The first duration is a duration in numerical form; or

The first duration is infinity; or

The first time length is a time length corresponding to a target index value, wherein the target index value is an index value selected from a plurality of indicator index values of preset time lengths.
The method according to claim 1, wherein the control signaling is a media access control layer MAC control element CE.
The method according to claim 8, wherein said controlling the repeated transmission of the packet data aggregation protocol PDCP of the terminal equipment according to the control signaling comprises:

According to the indication information included in the MAC CE, the PDCP repeated transmission function status of the radio link control RLC entity corresponding to the target RB is updated to be activated or deactivated, wherein the target RB is configured in the terminal device At least one RB of the PDCP repeated transmission function, and the indication information is used to respectively indicate the PDCP repeated transmission function status of each RLC entity;

For any one of the target RBs, copy the PDCP protocol data unit PDU to the target number of RLC entities and respectively deliver them to the RLC entities in the active state, where the target number is the number of the RLC entities in the active state;

Each of the RLC entities in the active state respectively transmits multiple copies of the PDCP PDU.
The method according to any one of claims 1-9, wherein the method further comprises:

Within the time range of the first duration, determine in real time whether the terminal device receives a new control signaling sent by the network device;

If yes, the new control signaling is used to cover the current control signaling, and the PDCP repeated transmission of the terminal device is controlled according to the new control signaling within a second time period, where the second time period is the new The effective duration of the control signaling.
The method according to claim 1, wherein after the first time period ends, the method further comprises:

If the current time is not within the time range of the effective duration of any control instruction, determining whether the terminal device generates an autonomous control instruction for controlling the PDCP repeated transmission of the terminal device;

If yes, control the PDCP repeated transmission of the packet data aggregation protocol of the terminal device according to the autonomous control command generated by the terminal device.
A transmission control device, characterized in that it comprises:

The receiving module is used to receive the control signaling sent by the network device;

The control module is configured to control the PDCP repeated transmission of the packet data aggregation protocol of the terminal device according to the control signaling within a first time period, and the first time period is the effective time period of the control signaling.
The device according to claim 12, wherein the control module is further configured to:

In the first time period, the first time period is acquired before repeated transmission of the packet data aggregation protocol PDCP of the terminal device is controlled according to the control signaling.
The apparatus according to claim 13, wherein the control signaling includes the first duration;

The control module is specifically used for:

Acquire the first duration in the control signaling.
The device according to claim 13, wherein the control module is specifically configured to:

Receiving first signaling sent by the network device, where the first signaling includes the first duration;

Acquire the first duration in the first signaling.
The device according to claim 13, wherein the control module is specifically configured to:

The first time length is obtained from an agreed agreement, where the first time length is included in the agreed agreement.
The device according to any one of claims 12-16, wherein:

The first duration is the duration corresponding to the terminal device; or

The first duration is the duration corresponding to the radio bearer RB, where any one of the control signaling corresponds to at least one of the RBs; or

The first duration is the duration corresponding to the control signaling.
The device according to any one of claims 12-17, wherein:

The first duration is a duration in numerical form; or

The first duration is infinity; or

The first time length is a time length corresponding to a target index value, wherein the target index value is an index value selected from a plurality of indicator index values of preset time lengths.
The apparatus according to claim 12, wherein the control signaling is a media access control layer MAC control element CE.
The device according to claim 19, wherein the control module is specifically configured to:

According to the indication information included in the MAC CE, the PDCP repeated transmission function status of the radio link control RLC entity corresponding to the target RB is updated to be activated or deactivated, wherein the target RB is configured in the terminal device At least one RB of the PDCP repeated transmission function, and the indication information is used to respectively indicate the PDCP repeated transmission function status of each RLC entity;

For any one of the target RBs, copy the PDCP protocol data unit PDU to the target number of RLC entities and respectively deliver them to the RLC entities in the active state, where the target number is the number of the RLC entities in the active state;

Each of the RLC entities in the active state respectively transmits multiple copies of the PDCP PDU.
The device according to any one of claims 12-20, wherein the control module is further configured to:

Within the time range of the first duration, determine in real time whether the terminal device receives a new control signaling sent by the network device;

If yes, the new control signaling is used to cover the current control signaling, and the PDCP repeated transmission of the terminal device is controlled according to the new control signaling within a second time period, where the second time period is the new The effective duration of the control signaling.
The device according to claim 12, wherein the control module is further configured to:

After the end of the first duration, if the current time is not within the time range of the effective duration of any control instruction, determining whether the terminal device generates an autonomous control instruction for controlling PDCP repeated transmission of the terminal device;

If yes, control the PDCP repeated transmission of the packet data aggregation protocol of the terminal device according to the autonomous control command generated by the terminal device.
A transmission control device, characterized in that it comprises:

Memory, used to store programs;

The processor is configured to execute the program stored in the memory, and when the program is executed, the processor is configured to execute the method according to any one of claims 1 to 11.
A computer-readable storage medium, characterized by comprising instructions, which when run on a computer, causes the computer to execute the method according to any one of claims 1 to 14.