WO2022155772A1

WO2022155772A1 - Resource preemption processing method, communication device, and readable storage medium

Info

Publication number: WO2022155772A1
Application number: PCT/CN2021/072652
Authority: WO
Inventors: 冯爱娟
Original assignee: 捷开通讯(深圳)有限公司
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2022-07-28
Also published as: CN116803116A

Abstract

The present application discloses a hybrid automatic repeat request feedback method. The method is applied to a base station side, and comprises: determining that at least some of downlink resources allocated to a user equipment in a first time unit are preempted; and sending to the user equipment a media access control (MAC) protocol data unit (PDU) comprising a preemption indication, the preemption indication being used for indicating that at least some of the downlink resources allocated to the user equipment in the first time unit are preempted. The present application further discloses a communication device and a readable storage medium.

Description

Resource preemption processing method, communication device and readable storage medium

【Technical field】

The present application relates to the field of communications, and in particular, to a resource preemption processing method, a communication device, and a readable storage medium.

【Background technique】

Currently, a wireless communication system utilizes Frequency Division Duplex (FDD) or Time Division Duplex (TDD) for data transmission between a base station and a User Equipment (UE). As shown in FIG. 1 , in an FDD wireless communication system, channels with different frequencies are used for uplink and downlink, and user equipment can simultaneously transmit data on the uplink and downlink channels. In a TDD wireless communication system, the same frequency channel is used for uplink and downlink, so the transmission time line in the system is divided into uplink transmission time and downlink transmission time. Among them, the FDD duplex mode can be further divided into full-duplex FDD (Full-Duplex FDD) and half-duplex FDD (Half-Duplex FDD, HD-FDD). HD-FDD has the characteristics of FDD and TDD, that is, uplink Channels with different frequencies are used for the downlink and uplink, but the uplink and downlink transmission times are staggered.

The fifth generation mobile communication system (5G NR) includes three major application scenarios, namely Enhanced Mobile Broadband (eMBB: Enhanced Mobile Broadband), Massive Machine Type Communication (mMTC: Massive Machine Type Communication) and Low Latency and High Reliability (URLLC: Ultra-reliable low-latency communication). URLLC has two basic characteristics, namely high reliability and low delay, such as BLER performance of the order of 10 ^-5 or 10 ^-6 , and air interface transmission delay of 0.5ms or 1ms. As specified by 3GPPR15, URLLC will provide services for latency0-sensitive devices, which can be called URLLC devices. In order to improve the resource utilization of the system, URLLC devices and non-URLLC devices can coexist. When URLLC devices burst URLLC services and non-URLLC devices have occupied wireless resources for transmission, the downlink preemption mechanism of URLLC is pointed out in R15. Correspondingly, the downlink preemption (Pre-emption Indication, PI) indication mechanism is used to notify the user equipment of the preempted resource position, specifically, the base station sends a PI indication (post-indication mode) to notify the user equipment of the preempted resource position, Therefore, the user equipment can receive the PI indication, and remove the preempted resources in the received data according to the PI indication, thereby eliminating the influence of the preempted resources and realizing successful decoding.

As shown in Figure 2, PUCCH is a physical uplink control channel (Physical uplink control channel), and PDSCH is a physical downlink share channel (Physical Downlink Share Channel). Among them, some resources in PDSCH are preempted by URLLCUE, so it is necessary to pass PUCCH after PDSCH The PI indication is transmitted to the UE corresponding to the preempted resource, so that the UE preempted with the resource can remove the resource at the preempted position according to the PI indication, so as to achieve successful decoding.

However, half-duplex user equipment (HD-FDDUE) can only receive or send messages at the same time, and cannot be parallelized, so there may be HD-FDDUE receiving data that has been punched (preempted resources), but then HD-FDDUE - The FDDUE switches to the uplink (UL) and cannot monitor the PI indication sent by the base station, so it cannot know the occupied resources and the location of the occupied resources. At this time, the HD-FDDUE has already received the data on the time-frequency resources together, Then decode, because the received data contains URLLC user data, resulting in decoding error, resulting in retransmission, and because its HARQ (Hybrid automatic repeat request, hybrid automatic repeat request) cache is polluted by URLLC user data, even if HARQ is retransmitted multiple times , soft merging of different redundancy versions may still lead to decoding errors, which affects the reliability of non-URLLCUE data transmission and waste of resources.

[Content of the invention]

The technical problem mainly solved by this application is to provide a resource preemption processing method, a communication device and a readable storage medium, which can solve the problems of low reliability of user equipment data transmission and waste of resources in the prior art.

In order to solve the above technical problems, a first aspect of the present application provides a resource preemption processing method, the method is applied to the base station side, and the method includes: determining that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted ; Send a media access control MAC protocol data unit PDU containing a preemption indication to the user equipment, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

In order to solve the above technical problems, a second aspect of the present application provides a method for processing resource preemption. The method is applied to the user equipment side. The method includes: receiving a MAC PDU including a preemption indication from a base station, and the preemption indication is used to indicate that the At least part of the downlink resources allocated to the user equipment in the first time unit is preempted; decoding is performed after removing the part of the downlink transmission received in the first time unit that is transmitted using the preempted downlink resources.

In order to solve the above-mentioned technical problems, a third aspect of the present application provides a communication device, the device includes a processor, a memory and a communication circuit, the processor is connected to the communication circuit; the memory stores instructions, and the processor is used to execute the instructions to implement the application as described in the present application. The resource preemption processing method provided by the first aspect.

In order to solve the above technical problems, a fourth aspect of the present application provides a communication device, the device includes a processor, a memory and a communication circuit, the processor is connected to the communication circuit; the memory stores instructions, and the processor is used to execute the instructions to implement the application as described in the present application. The resource preemption processing method provided by the second aspect.

In order to solve the above technical problems, the present application provides a readable storage medium storing instructions, and when the instructions are executed by a processor, the foregoing method for processing resources preemption is implemented.

The beneficial effects of the present application are: when determining that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, the base station sends a medium access control MAC protocol data unit PDU containing a preemption indication to the user equipment, wherein the The MACPDU carries the preemption instruction, so that the user equipment can receive the preemption instruction in time, and can determine at least part of the preempted downlink resources that have been allocated to the user equipment in the first time unit, thereby avoiding URLLC bursts mixed in the data of the first user equipment. Decoding errors caused by sending service data, so that no HARQ retransmission, or even multiple HARQ retransmissions, is required, which ensures the reliability of data transmission of the first user equipment and reduces waste of resources.

【Description of drawings】

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort. in:

Fig. 1 is a schematic diagram of FDD, HD-FDD and FDD in the prior art;

2 is a schematic diagram of a post-preemption indication mechanism in the prior art;

3 is a schematic structural diagram of an embodiment of a wireless communication system or network of the present application;

4 is a schematic flowchart of the first embodiment of the resource preemption processing method of the present application;

5 is a schematic flowchart of the second embodiment of the resource preemption processing method of the present application;

6 is a schematic flowchart of the third embodiment of the resource preemption processing method of the present application;

FIG. 7 is a schematic diagram of the first embodiment of multi-terminal interaction in the resource preemption processing method of the present application;

8 is a schematic flowchart of a fourth embodiment of a resource preemption processing method of the present application;

9 is a schematic flowchart of a fifth embodiment of a resource preemption processing method of the present application;

Fig. 10 is a schematic diagram of downlink preemption indication;

Fig. 11 is a schematic diagram of the correspondence between each bit of the preemption indication and the symbol;

12 is a schematic flowchart of the sixth embodiment of the resource preemption processing method of the present application;

FIG. 13 is a schematic diagram of a second embodiment of multi-terminal interaction in the resource preemption processing method of the present application;

14 is a schematic flowchart of the seventh embodiment of the resource preemption processing method of the present application;

15 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application;

Fig. 16 is a schematic diagram of MACCE of the present application;

17 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application;

FIG. 18 is a schematic diagram of a third embodiment of multi-terminal interaction of the resource preemption processing method of the present application;

19 is a schematic structural diagram of the first embodiment of the communication device of the present application;

20 is a schematic structural diagram of a second embodiment of a communication device of the present application;

FIG. 21 is a schematic structural diagram of an embodiment of a readable storage medium of the present application.

【Detailed ways】

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and the non-conflicting embodiments in the following embodiments can be combined with each other. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

"User equipment" in this application may include or represent any portable computing device used for communication. Examples of user equipment that may be used in certain embodiments of the described devices, methods and systems may be wired or wireless devices such as mobile devices, mobile phones, user equipment, smart phones, portable computing devices, such as laptops Computers, handheld devices, tablets, tablets, netbooks, personal digital assistants, music players, and other computing devices capable of wired or wireless communication. In addition, the user equipment may also be a reduced capability (Reduced Capability) user equipment.

Please refer to FIG. 3, which is a diagram of a plurality of network nodes 104a-104m (eg, base stations) comprising a core network 102 (or telecommunications infrastructure) with cells 106a-106m serving a plurality of wireless communication units 108a-108e (eg, UEs) A schematic diagram of a wireless communication system or network 100 of a gNB). A plurality of network nodes 104a-104m are connected to the core network 102 by links. These links may be wired or wireless (eg, radio communication links, fiber optics, etc.). Core network 102 may include multiple core network nodes, network entities, application servers, or any other network or computing device that may communicate with one or more radio access networks including multiple network nodes 104a-104m.

In this example, the network nodes 104a-104m are illustrated as base stations, which may be gNBs in a 5G network, for example but not limited to. Each of the plurality of network nodes 104a-104m (eg, base stations) has a footprint, which is schematically represented in Figure 3 for simplicity and by way of example and not limitation for serving one or more UEs 108a The corresponding circular cells 106a-106m of -108e. UEs 108a-108e can receive services from wireless communication system 100, such as voice, video, audio, or other communication services.

The wireless communication system or network 100 may include or represent any one or more communication networks used for communication between UEs 108a-108e and other devices, content sources, or servers connected to the wireless communication system or network 100. Core network 102 may also include or represent one or more communication networks, one or more network nodes, entities, elements, application servers, servers, base stations or other links, coupled or connected to form wireless communication system or network 100 Network equipment. Links or couplings between network nodes may be wired or wireless (eg, radio communication links, fiber optics, etc.). The wireless communication system or network 100 and core network 102 may include any suitable combination of a core network and a wireless access network comprising network nodes or entities, base stations, access points, etc. that enable UEs 108a-108e, wireless communication system 100 and Communication between network nodes 104a-104m of core network 102, content sources, and/or other devices connected to system or network 100 is enabled.

An example of a wireless communication network 100 that may be used in some embodiments of the described devices, methods and systems may be at least one communication network or a combination thereof including, but not limited to, one or more wired and/or wireless telecommunications networks, a core network(s), radio access network(s), computer network(s), data communication network(s), internet, telephone network, wireless network, such as WiMAX based on the IEEE 802.11 standard by way of example only , WLAN and/or Wi-Fi network, or Internet Protocol (Internet Protocol, IP) network, packet-switched network or enhanced packet-switched network, IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) network or based on wireless, cellular or satellite Technical communication networks, such as mobile networks, Global System for Mobile Communications (GSM), GPRS networks, Wideband Code Division Multiple Access (W-CDMA), CDMA2000 or LTE/Advanced LTE communication network or any 2nd, 3rd, 4th or 5th generation and beyond type of communication network etc.

In the example of FIG. 3, the wireless communication system 100 may be, by way of example only and not limited to, cyclic prefix orthogonal frequency division multiplexing (CP- 5G communication network using OFDM) technology. The downlink may include one or more communication channels for transmitting data from one or more gNBs 104a-104m to one or more UEs 108a-108e. Typically a downlink channel is a communication channel used to transmit data, eg, from gNB 104a to UE 108a.

Both the uplink and downlink for 5G networks are divided into radio frames (eg, each frame may be 10ms in length), where each frame may be divided into multiple subframes. For example, each frame may include 10 subframes of equal length, where each subframe consists of multiple time slots (eg, 2 time slots) for transmitting data. In addition to time slots, a subframe may include several additional special fields or OFDM symbols, which may include, by way of example only, downlink synchronization symbols, broadcast symbols and/or uplink reference symbols.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart of the first embodiment of the resource preemption processing method of the present application.

Specifically, the first embodiment of the resource preemption processing method includes:

Step S11: Obtain the information of the ultra-reliable and low-latency communication URLLC burst service.

This embodiment is applied to the base station side. The data characteristics of URLLC low-latency scenarios are mainly bursty but not large, so NR supports URLLC to occupy channel resources by preemption. For example, when the base station allocates physical resources to the eMBB service, the resources of the eMBB service are also allocated to the URLLC service. When the URLLC preempts the physical resources, the NR notifies the UE of the preemption result to ensure the low latency requirement of the URLLC. . The user equipment corresponding to the URLLC burst service is called URLLCUE.

When the base station obtains the information of the URLLC burst service of ultra-reliable and low-latency communication, it needs to allocate radio resources for the URLLC burst service. The allocated radio resources here can be the radio resources that are not occupied by the user equipment, or have been occupied by the user equipment. wireless resources.

Step S12: Skip the radio resources allocated for the first user equipment and determine the preempted radio resources for the URLLC burst service, and the first user equipment does not allow the resources to be occupied by the URLLC burst service.

In this embodiment, the first user equipment does not allow resources to be occupied by the URLLC burst service. When the base station needs to allocate preempted radio resources for the URLLC burst service, the base station skips the radio resources allocated for the first user equipment and determines that it is the URLLC burst service. The preempted radio resources are allocated by the sending service, thereby ensuring the integrity of the radio resources allocated for the first user equipment. Wherein, since the radio resources allocated for the first user equipment are not occupied by the URLLC burst service, decoding errors caused by mixing interference data (data of the URLLC service) into the user data of the first user equipment are avoided, and no HARQ is required. Retransmission, even multiple HARQ retransmissions, ensures the reliability of data transmission of the first user equipment and avoids wasting resources.

Optionally, the first user equipment may be a half-duplex user equipment, such as a safety sensor (safety switch, safety light grid, safety door system). Half-duplex user equipment (HD-FDD UE) adopts the HD-FDD operation mode, and can only receive or send messages at the same time, and cannot be parallelized, so although the system is provided with a downlink preemption indication mechanism, since the PI indication is a post-indication method ( As shown in Figure 2, that is, after occupying resources, the PI indication is sent again), hereinafter referred to as the post-PI indication. When the base station issues the PI indication, if the user equipment is in the uplink state, it can only send messages. At this time The user equipment cannot receive the PI indication, which may affect the reliability of data transmission of the half-duplex user equipment. Therefore, for such devices such as half-duplex user equipment, it is set to not allow resources to be occupied by the URLLC burst service. , so that the impact of the URLLC burst service can be avoided, and the reliability of the data transmission of the half-duplex user equipment can be guaranteed.

In some embodiments, the first user equipment may be a reduced capability (Reduced Capability) user equipment, referred to as a RedCap UE for short. Among them, RedCap UE can include three types of devices, namely industrial wireless sensors, video surveillance devices in smart cities, and wearable devices. Specifically, industrial wireless sensors include pressure sensors, humidity sensors, thermometers, motion sensors, accelerometers, actuators, etc.; video surveillance equipment in smart cities includes access control equipment, traffic video surveillance equipment, etc.; wearable devices include smart watches, hand Rings, rings, electronic health related equipment, medical monitoring equipment, etc. Compared with URLLC/eMBB devices, RedCap UEs are relatively small in size, and do not require very high bandwidth and peak rate. Optionally, the RedCap UE may adopt the HD-FDD operation mode, and the RedCap UE adopting the HD-FDD operation mode is also the HD-FDD UE.

In some embodiments, the first user equipment may specifically not allow uplink resources and/or downlink resources to be occupied by the URLLC burst service. Specifically, the first user equipment does not allow uplink resources to be occupied by URLLC burst services, or the first user equipment does not allow downlink resources to be occupied by URLLC burst services, or the first user equipment does not allow uplink resources and downlink resources to be occupied by URLLC burst services business occupancy. It can be understood that the resource preemption processing method provided by this application can be applied not only to the downlink preemption mechanism in the URLLC service, but also to the uplink cancellation mechanism in the URLLC service, that is, the URLLC device cannot preempt the uplink resources of the first user equipment.

In this embodiment, the base station obtains the information of the ultra-reliable and low-latency communication URLLC burst service; skips the radio resources allocated for the first user equipment to determine the preempted radio resources for the URLLC burst service, wherein by setting the first user equipment The device does not allow resources to be occupied by the URLLC burst service, and can no longer allocate the wireless resources allocated for the first user equipment to the URLLC burst service, so as to avoid the data of the first user equipment being mixed with the data of the URLLC burst service. Therefore, it is unnecessary to perform HARQ retransmission, or even multiple HARQ retransmissions, which ensures the reliability of data transmission of the first user equipment and reduces waste of resources.

Please refer to FIG. 5 , which is a schematic flowchart of a second embodiment of a method for processing resource preemption of the present application.

Specifically, the second embodiment of the resource preemption processing method includes:

Step S21: Obtain the information of the ultra-reliable and low-latency communication URLLC burst service.

For specific content, reference may be made to the description of the first embodiment of the resource preemption processing method of the present application, which will not be repeated here.

Step S22: Acquire information of the first user equipment.

Step S23: Determine according to the information of the first user equipment that the first user equipment does not allow resources to be occupied by the URLLC burst service.

Steps S22-S23 and S21 do not have a certain sequence. In this embodiment, steps S22-S23 may be executed after step S21. In other embodiments, steps S22-S23 may be executed before or at the same time as step S21. There are no restrictions.

In some embodiments, the information of the first user equipment may include capability information (UE capability) of the first user equipment. The capability information of the first user equipment may include an identifier used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service.

In one implementation manner, the capability information of the first user equipment must include an identifier indicating that the first user equipment does not allow resources to be occupied by the URLLC burst service, so that when the base station obtains the capability information of the first user equipment, it can directly It is determined that the first user equipment does not allow resources to be occupied by the URLLC burst service. In another implementation manner, the capability information of the first user equipment may include an identifier indicating that the first user equipment does not allow resources to be occupied by the URLLC burst service. In this case, after acquiring the information of the first user equipment, the base station needs to After it is determined that the first user equipment does not allow the resource to be occupied by the URLLC burst service, it can be determined that the first user equipment does not allow the resource to be occupied by the URLLC burst service.

The information of the first user equipment can be carried by the radio access control RRC message, or can be transmitted by using special resources in the random process, such as MSG1/MSGA, which can specifically be the individual initial UL BWP, individual preamble and individual MSG1/MSGA. At least one of the Prach occurrences. The radio access control RRC message may include RRCSetupComplete, RRCReconfigurationComplete, RRCReestablishmentComplete, UEcapabilityInformation and other messages.

Optionally, the first user equipment may actively report capability information, and the base station receives the capability information actively reported by the first user equipment, and judges whether the capability information includes a feature indicating that the first user equipment does not allow resources to be occupied by the URLLC burst service. If the identifier is included, it can be determined that the first user equipment is not allowed to be occupied by the URLLC burst service; if it is not included, it can be determined that the first user equipment is allowed to be occupied by the URLLC burst service. In addition, the base station may actively acquire capability information of the first user equipment.

Specifically, the information of the first user equipment may include capability type identifiers and/or device type identifiers, and the capability type identifiers and/or device type identifiers may be used to indicate that the first user equipment does not allow the resource to be subjected to URLLC burst services. The capability type identifier may include radio access-related capabilities and core network-related capabilities, and may specifically be the capability type included in the UE capability information.

In an application scenario, the device type identifier may include, but is not limited to, a half-duplex user equipment identifier (such as an HD-FDD UE) and a duplex user equipment identifier (such as an FDD UE), where the HD-FDD UE is used to represent the first user. The device does not allow resources to be occupied by the URLLC burst service, and the FDD UE is used to indicate that the first user equipment allows resources to be occupied by the URLLC burst service. When the device type identifier reported by the first user equipment is an HD-FDD UE, the base station may determine, based on the HD-FDD UE, that the first user equipment does not allow resources to be occupied by the URLLC burst service.

In an application scenario, the device type identifier may include, but is not limited to, Redcap UE and regular NR UE, where Redcap UE is used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service, and regular NR UE is used to indicate that the first user equipment The device allows resources to be occupied by the URLLC burst service. When the device type identifier reported by the first user equipment is Redcap UE, the base station may determine, based on the Redcap UE, that the first user equipment does not allow resources to be occupied by the URLLC burst service. In other application scenarios, Redcap UE can also include multiple sub-device type identifiers, such as wireless sensor identifiers, video surveillance device identifiers, and wearable device identifiers.

In some embodiments, not all Redcap UEs have high performance requirements, and some Redcap UEs with low performance requirements may allow resources to be occupied by URLLC burst services, while Redcap UEs with low performance requirements may not allow resources to be occupied by URLLC Unexpected business occupancy. For example, if the device type identifier is Redcap UE-1, it represents a UE with low performance requirements (such as a smart bracelet), then the UE can allow resources to be occupied by the URLLC burst service; the device type identifier is Redcap UE-2, which represents a high performance requirement. UE (such as a security sensor or high-end video surveillance equipment), the UE may not allow resources to be occupied by the URLLC burst service.

In other embodiments, the information of the first user equipment includes a dedicated identifier used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service. The dedicated identity may be carried by a radio access control RRC message. The dedicated identifier can be selected according to the actual situation, which is not limited here, as long as it can be used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service.

Step S24: Skip the radio resources allocated for the first user equipment and determine to allocate preempted radio resources for the URLLC burst service.

If the base station determines that the first user equipment does not allow resources to be occupied by the URLLC burst service, it can skip the radio resources allocated for the first user equipment and determine to allocate the preempted radio resources for the URLLC burst service, that is, the first user equipment will not be occupied by the URLLC burst service. The allocated radio resources are allocated to the URLLC burst service; if the base station determines that the first user equipment allows resources to be occupied by the URLLC burst service, the radio resources allocated to the first user equipment may be determined as the preempted radio resources for the URLLC burst service allocation .

In this embodiment, the base station obtains the information of the first user equipment, and determines according to the information of the first user equipment that the first user equipment does not allow resources to be occupied by the URLLC burst service, so that the URLLC burst service of ultra-reliable and low-latency communication can be obtained before the URLLC burst service is obtained. information, skip the radio resources allocated for the first user equipment and determine to allocate preempted radio resources for the URLLC burst service, wherein whether the resources of the first user equipment can be occupied by the URLLC burst service can be determined through the information of the first user equipment The reliability of data transmission is not affected. If not, it can be determined that the first user equipment does not allow resources to be occupied by the URLLC burst service, thereby ensuring the reliability of data transmission of the first user equipment.

Please refer to FIG. 6 , which is a schematic flowchart of a third embodiment of a method for processing resource preemption of the present application.

Specifically, the third embodiment of the resource preemption processing method includes:

Step S31: Send user equipment information to the base station, where the user equipment information is used to indicate that the user equipment does not allow resources to be occupied by the URLLC burst service.

This embodiment is applied to the user equipment side. The user equipment sends the user equipment information to the base station, where the user equipment information is used to indicate that the user equipment does not allow resources to be occupied by the URLLC burst service, so that the base station determines based on the user equipment information that the user equipment does not allow the resources to be occupied by the URLLC burst service, thereby skipping as follows. The radio resources allocated by the user equipment are determined to be preempted by the URLLC burst service allocation.

In some embodiments, the user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.

In some embodiments, the user equipment does not allow uplink resources and/or downlink resources to be occupied by the URLLC burst service.

In some embodiments, the user equipment information may include capability information of the user equipment, and the capability information of the user equipment may include an identifier used to indicate that the user equipment does not allow resources to be occupied by the URLLC burst service.

In some embodiments, the user equipment information may include a dedicated identifier for indicating that the user equipment does not allow resources to be occupied by the URLLC burst service. The dedicated identity may be carried by a radio access control RRC message.

It can be understood that the user equipment in this embodiment is similar to the first user equipment in the previous embodiment. For details, reference may be made to the descriptions in the first embodiment and the second embodiment of the resource preemption processing method of the present application, which is not repeated here. repeat.

In this embodiment, the user equipment sends the user equipment information to the base station, and the user equipment information is used to indicate that the user equipment does not allow the resource to be occupied by the URLLC burst service, so that the base station determines based on the user equipment information that the user equipment does not allow the resource to be occupied by the URLLC burst service The service is occupied, and the radio resources allocated for the user equipment are skipped to determine the preempted radio resources for the URLLC burst service, so as to avoid decoding errors caused by mixing the data of the URLLC burst service into the data of the first user equipment. Then, HARQ retransmission, or even multiple HARQ retransmissions, is performed, which ensures the reliability of data transmission of the first user equipment and reduces waste of resources.

Please refer to FIG. 7 . FIG. 7 is a schematic diagram of a first embodiment of multi-terminal interaction in a method for processing resource preemption of the present application.

The first embodiment of the multi-terminal interaction of the resource preemption processing method may include:

1) The base station (gNB) obtains the information of the ultra-reliable and low-latency communication URLLC burst service.

2) The first user equipment (UE1) sends the information of the first user equipment to the base station.

3) The base station receives the information of the first user equipment.

4) The base station determines, according to the information of the first user equipment, that the first user equipment does not allow resources to be occupied by the URLLC burst service.

5) The base station skips the radio resources allocated for the first user equipment and determines to allocate preempted radio resources for the URLLC burst service, and the first user equipment does not allow resources to be occupied by the URLLC burst service.

For the description of the above content, please refer to the corresponding position in the foregoing embodiment, and details are not repeated here.

Please refer to FIG. 8 , which is a schematic flowchart of a fourth embodiment of a method for processing resource preemption of the present application.

Specifically, the fourth embodiment of the resource preemption processing method includes:

Step S41: It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

This embodiment is applied to the base station side. The user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.

In this embodiment, the time unit may be a time slot (Slot), then the second time unit may be the previous time slot of the first time unit, or may be the first N time slots of the first time unit, where N is a positive integer .

Specifically, at least part of the downlink resources allocated to the user equipment in the first time unit may be preempted by the URLLC burst service of the URLLC UE. The URLLC UE preempts the downlink resources of the HD-FDD UE, and the preemption timing is when at least one control resource set CORESET time domain period corresponding to the preempted resources has not yet started. Using the pre-PI scheme of this embodiment can solve the problem of large Some HD-FDD UEs cannot receive abnormal conditions indicated by PI.

Step S42: Send a preemption indication to the user equipment in the second time unit, the second time unit is before the first time unit, and the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

When the base station determines that the URLLC burst service preempts at least part of the downlink resources allocated to the HD-FDD UE in the first time unit, the base station sends a preemption indication to the user equipment in the second time unit before the first time unit (preamble PI indication) to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and indicate the location of at least part of the preempted downlink resources, so that the user equipment can eliminate the influence of the preempted resources.

In some embodiments, the base station may not distinguish user equipments, that is, for all user equipments, send a preemption indication to the user equipments in the second time unit. In other embodiments, the base station may distinguish user equipments, and only use the second time unit to send a preemption instruction to the user equipment for user equipments such as half-duplex user equipment that cannot receive the post-PI indication.

In this embodiment, by prepending the PI indication and the user equipment can receive the prepending PI indication, the user equipment can successfully receive the PI in the second time unit regardless of whether the user equipment is in the uplink state in the time unit after the first time unit Indicates that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted, so that decoding errors caused by mixing preempted resources into the data of the user equipment can be avoided, and no HARQ retransmission is necessary, or even more The secondary HARQ retransmission ensures the reliability of data transmission of the first user equipment and reduces waste of resources.

Please refer to FIG. 9 to FIG. 10 , FIG. 9 is a schematic flowchart of the fifth embodiment of the resource preemption processing method of the present application, FIG. 10 is a schematic diagram of a downlink preemption indication, and FIG. 11 is a corresponding relationship between bits and symbols of the preemption indication A schematic diagram.

Specifically, the fifth embodiment of the resource preemption processing method includes:

Step S51: It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

For details, reference may be made to the description of the fourth embodiment of the resource preemption processing method of the present application, which will not be repeated here.

Step S52: Determine whether the user equipment is in an uplink state in a third time unit, and the third time unit is after the first time unit.

If yes, go to step S53, otherwise go to step S54.

Wherein, step S52 and step S51 do not have a certain sequence relationship. In this embodiment, step S52 may be executed after step S51. In other embodiments, step S52 may be executed before or at the same time as step S51, which is not performed here. limited.

In this embodiment, the time unit may be a time slot (Slot), then the third time unit may be the next time slot of the first time unit, or may be the next N time slots of the first time unit, where N is a positive integer .

The base station can determine, according to the uplink and downlink time allocation of the user equipment, whether the user equipment can receive the PI indication before switching to the uplink state, so as to determine whether the preamble PI indication is required according to the result.

Specifically, the base station determines whether the user equipment is in the uplink state in the third time unit, and if so, it means that the user equipment cannot successfully receive the post-PI indication in the third time unit, so it needs to send a preemption instruction to the user equipment in the second time unit in advance , so that the user equipment successfully receives the PI indication; if not, it means that the user equipment can successfully receive the post-PI indication in the third time unit, so that the PI indication does not need to be prepended, and can still be sent to the user equipment in the third time unit Preemption instructions.

Step S53: Send a preemption indication to the user equipment in the second time unit.

Step S54: The preemption instruction is not sent in the second time unit but is sent in the third time unit.

Wherein, the second time unit is before the first time unit, and the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

In this embodiment, the preemption indication may include a first indicator, and the first indicator is used to indicate that the preemption indication is before or after the first time unit. Optionally, the size of the first indicator may be 1 bit or multiple bits. For example, the first indicator is Pre-Ind (1 bit), the size is 1 bit, and its value is 1 to indicate a pre-PI indication, and its value is 0 to indicate a post-PI indication.

In some implementations, the base station sends a preemption indication to the user equipment, the user equipment receives the preemption indication, and determines whether the first indicator is included, and if the first indicator is included, determines that the first time unit has been allocated to the user equipment. At least part of the downlink resources are preempted, and if the first indicator is not included, it is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are not preempted.

In other embodiments, after step S53, the method may further include: sending a preemption indication to the user equipment in a third time unit, where the third time unit is after the first time unit. In the existing design, the downlink preemption indication is post-positioned. In this embodiment, in order to solve the conflict between the half-duplex user equipment and the URLLC service, the PI indication is prepended. However, considering the compatibility of other normal user equipment, the base station can still The preemption indication is sent to the user equipment in the third time unit.

In some embodiments, the preemption indication may be included in downlink control information (Downlink Control Information, DCI) in a dedicated format, and the DCI in the dedicated format may specifically be DCI format 2_1. Specifically, when the user equipment is in the uplink state in the third time unit, the base station may schedule DCI format 2_1 and other normally scheduled DCIs, and multiple DCIs may be located in different search spaces Searchspaces of the same CORESET; or in different CORESETs middle.

Specifically, as shown in Figure 10, the base station can send a PI indication to the user equipment through multicast, and the PI indication is carried in the DCI format 2_1 to notify the user equipment of resources preempted in an RDR (Reference DL Region). DCI format2_1 is Group-common DCI, the maximum payloadSize is 126bit, each segment of 14bit corresponds to a UE PI, scrambled by INT_RNTI, and the preemption indication/configuration is in DownlinkPreemption. In order to ensure reliability, the URLLC service occupies a large bandwidth in the frequency domain. Therefore, the data of one URLLC user may occupy the time-frequency resources of the data of multiple non-URLLC UEs. To save overhead, the PI indication can be carried in the group-common In the DCI format of , it is more efficient to notify a group of user equipment resources that are preempted by the URLLC service.

In some embodiments, the preemption indication can be included in the DCI used to control the user equipment, that is, it can be extended in the existing DCI to add a PI indication (14bit), specifically, it can be added before the DCI used to control the user equipment. Set the indication bits indicated by PI (such as DCI 0_x, 1_x) and PI indication (14bit). It can be understood that the PI indication can be optionally configured, and not all user equipments need to be configured. When the user equipment is preempted, the PI indication in the DCI for controlling the user equipment can be set according to the location of the preempted resources. , or only when it is determined that the user equipment cannot receive the PI indication in time, the PI indication in the DCI for controlling the user equipment is set to indicate the preempted resource information.

In an application scenario, the user equipment determines the DCI 0_x to be detected according to its own device type, and 1_x needs to add a downlink preemption indication, thereby increasing the indication bit indicated by the preamble PI, and subsequently detects the DCI according to the extended DCI format; When downlink resources are preempted, the PI indication in the extended DCI is set; the user equipment detects the DCI according to the known extended DCI format, so as to obtain the PI indication from the DCI.

Here is a brief introduction to the correspondence between each bit and symbol in the PI indication, which is divided into two cases: one case is that when the timeFrequencySet is configured to 0, the frequency domain is the entire frequency domain BWP, and the time domain is divided into 14 groups, 14 The bits respectively indicate whether one of the time/frequency positions is occupied by URLLC data. As shown in the left figure in Figure 11, 14 symbols are divided into 14 groups, each symbol corresponds to a bit in the PI indication, and a value of 1 indicates that it is occupied by the URLLC UE. In another case, when timeFrequencySet is set to 1, the frequency domain is divided into upper and lower parts, and several symbols are used as a group in the time domain, and 1 bit is used to indicate that, 14 bits can also represent 14 groups . As shown in the right figure in Figure 11, 14 symbols are divided into 14 groups, each symbol corresponds to a bit in the PI indication, and a value of 1 indicates that it is occupied by the URLLC UE.

In this embodiment, the base station determines that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and then determines whether the user equipment is in the uplink state in the third time unit, and the third time unit is in the first time unit Afterwards, if yes, send a preemption indication to the user equipment in the second time unit, otherwise, send the preemption indication not in the second time unit but in the third time unit, wherein the user is pre-determined before allocating resources for the preemption indication Whether the device is in the uplink state in the third time unit, so that the PI indication is prepended only when it is determined that the user equipment is in the uplink state in the third time unit.

Please refer to FIG. 12. FIG. 12 is a schematic flowchart of the sixth embodiment of the resource preemption processing method of the present application.

Specifically, the sixth embodiment of the resource preemption processing method includes:

Step S61: Receive a preemption instruction from the base station in the second time unit, where the preemption instruction is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and the second time unit is before the first time unit .

This embodiment is applied to the user equipment side. The user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.

In some embodiments, the preemption indication may include a first indicator, which may be used to indicate that the preemption indication is before or after the first time unit. The preemption indication may be included in the downlink control information DCI in a dedicated format. The DCI in the dedicated format may be DCI format 2_1.

In some embodiments, the preemption indication may be included in the DCI used to control the user equipment.

Step S62: Use the allocated downlink resources to receive downlink transmission in the first time unit.

Step S63: Decoding is performed after removing the part transmitted by using the preempted downlink resource in the downlink transmission.

The user equipment receives the preemption indication from the base station in the second time unit, and then uses the allocated downlink resources to receive downlink transmission in the first time unit. Based on the preemption indication, the user equipment can determine the preempted allocated downlink resources in the first time unit At least part of the downlink resources are given to the user equipment, so that the part of the downlink resources can be removed and then decoded, so as to ensure the reliability of the data transmission of the user equipment.

In some embodiments, after receiving the preemption indication from the base station in the second time unit, the user equipment may further receive the preemption indication from the base station in a third time unit, and the third time unit is after the first time unit to consider The compatibility of other normal user equipment ensures the normal operation of other normal user equipment.

It can be understood that, for the specific content in this embodiment, reference may be made to the descriptions in the foregoing embodiments of the resource preemption processing method of the present application, which will not be repeated here.

In this embodiment, the user equipment can successfully receive the preemption instruction from the base station in the second time unit, and then uses the allocated downlink resources to receive downlink transmission in the first time unit, and removes the preempted downlink transmission according to the preemption instruction. After decoding the part of downlink resource transmission, it is possible to avoid decoding errors caused by preempted resources mixed into the data of the user equipment, so that there is no need to perform HARQ retransmission, or even multiple HARQ retransmissions, which ensures the data of the first user equipment. Reliability of transmission while reducing waste of resources.

Please refer to FIG. 13 . FIG. 13 is a schematic diagram of a second embodiment of multi-terminal interaction in the method for processing resource preemption of the present application.

The second embodiment of the multi-terminal interaction of the resource preemption processing method may include:

1) The base station (gNB) determines that at least part of the downlink resources allocated to the duplex user equipment in the first time unit is preempted (the base station determines that the URLLC UE preempts at least part of the resources of the HD-FDD UE in the first time unit).

2) The base station sends a preemption instruction to the dual half-duplex user equipment in the second time unit, and the second time unit is before the first time unit, and the preemption instruction is used to indicate that the at least half-duplex user equipment in the first time unit has been allocated. Some downlink resources are preempted (PDCCH (DCI format 2_1 + other DCIs)).

3) The base station sends the PDCCH to the URLLC device in the second time unit.

4) The dual half-duplex user equipment (HD-FDD UE) receives the preemption indication from the base station in the second time unit (detected DCI format 2_1).

5) The dual-half-duplex user equipment uses the allocated downlink resources to receive downlink transmission (PDSCH (at least part of downlink resources are preempted)) in the first time unit.

6) According to DCI format 2_1, the dual-half-duplex user equipment removes the part of the downlink transmission using the preempted downlink resource transmission and performs decoding.

7) The URLLC device receives the PDCCH sent by the base station, and the decoding is successful.

Please refer to FIG. 14. FIG. 14 is a schematic flowchart of the seventh embodiment of the resource preemption processing method of the present application. This embodiment is applied to the base station side. Specifically, the seventh embodiment of the resource preemption processing method includes:

Step S71: It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

Step S72: Send a media access control MAC protocol data unit PDU including a preemption indication to the user equipment, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

Among them, the media access control MAC protocol data unit PDU, referred to as MAC PDU. A MAC PDU may include a MAC header, a MAC CE, and a MAC SDU. The MAC header may be composed of multiple MAC subheaders, and each MAC subheader corresponds to the MAC CE and the MAC SDU, and is used to indicate the corresponding MAC CE and MAC The name of the SDU (the LCID field in the MAC subheader is used to indicate the name of the corresponding MAC CE and the MAC SDU), length and other information; the MAC CE is used to carry control information related to radio resource management; the MAC SDU is used to carry data or Signaling, a MAC PDU can contain 0 or more MAC SDUs. In this embodiment, one of the MAC control elements CE in the indication can be preempted, that is, the MAC CE. Optionally, a new MAC CE may be constructed to carry the preemption indication.

In some embodiments, the LCID indicated by the PI can be defined, as shown in Table 1 below. In an example, the field 46 can be used to represent the MAC PDU containing the preemption indication, which can be specifically the name of the MAC CE.

Table 1: Values of LCID for DL-SCH

In this embodiment, when determining that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted, the base station sends a medium access control MAC protocol data unit PDU containing a preemption indication to the user equipment, wherein the MAC PDU is carried The preemption instruction enables the user equipment to receive the preemption instruction in time, and can determine at least part of the downlink resources that have been preempted and allocated to the user equipment in the first time unit, thereby preventing URLLC burst services from being mixed into the data of the first user equipment The decoding error caused by the data is not necessary to perform HARQ retransmission, or even multiple HARQ retransmission, which ensures the reliability of the data transmission of the first user equipment and reduces the waste of resources.

Please refer to FIG. 15 to FIG. 16 , FIG. 15 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application, and FIG. 16 is a schematic diagram of the MACCE of the present application.

Specifically, the eighth embodiment of the resource preemption processing method includes:

Step S81: It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

This embodiment is applied to the base station side. The user equipment is a half-duplex user equipment and/or a reduced capability user equipment.

Step S82: Determine whether the user equipment is in the uplink state in the second time unit, which is after the first time unit.

If yes, go to step S83; otherwise, go to step S84.

Different from the above-mentioned embodiments, in this embodiment, the second time unit is after the first time unit.

If the user equipment is not in the uplink state in the second time unit, it means that the user equipment can receive the preemption instruction in the downlink control information in time, so that the user equipment can use the downlink control information to send the preemption instruction to the user equipment in the second time unit; if the user equipment In the uplink state in the second time unit, it means that the user equipment cannot receive the preemption instruction in the downlink control information in time, and thus needs to send the preemption instruction through the MAC PDU, so that the user equipment can receive the preemption instruction in time.

In other embodiments, the base station may also acquire user equipment information, and determine whether the user equipment can receive the preemption indication in the downlink control information in time according to the user equipment information, where the user equipment information may include a capability type identifier and/or a device type For the specific content, please refer to the above-mentioned embodiment, which will not be repeated here. For example, if the device type identifier obtained by the base station is HD-FDD UE, it means that the user equipment cannot receive the preemption instruction in the downlink control information in time, so the MAC PDU can be used to send the preemption instruction to ensure the reliability of user equipment data transmission.

Step S83: Send a MAC PDU containing a preemption indication.

The preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

Step S84: Send a preemption indication to the user equipment by using the downlink control information in the second time unit.

Wherein, the medium access control MAC protocol data unit PDU includes a preemption indication.

In some embodiments, the base station may send a preemption indication to the user equipment using downlink control information (DCI) in the second time unit. In other embodiments, the base station may use the unpreempted downlink resources to send the MAC PDU including the preemption indication in the first time unit.

Wherein, the preemption indication includes a first indicator, and the first indicator is used to indicate that the preemption indication is before or after the preempted downlink resources, so that when at least part of the downlink resources allocated to the user equipment is preempted, the preemption can be performed at the first time Before (after) the unit, the preemption indication is sent to the user equipment, and the user equipment can determine through the first indicator therein that the preemption indication is used to indicate that the downlink resources of the subsequent (previous) time unit are preempted.

As shown in FIG. 16, it is a schematic diagram of MACCE, including two cases: one case (oct1) is the preemption indication (Preemption Indication) including the first indicator (Pre-Ind), the other case (oct2) Yes, the preemption indication of the first indicator is not included. The Preemption Indication is 14 bits, and each bit corresponds to each group of symbols in Figure 11. Specifically, it can correspond from the high-order bit or from the low-order bit.

Optionally, the size of the first indicator may be 1 bit or multiple bits. In some embodiments, the first indicator is Pre-Ind (1 bit), the size is 1 bit, and its value is 1 to indicate a pre-PI indication, and its value is 0 to indicate a post-PI indication. In other embodiments, it can be determined whether there is a MACCE containing a PI indication, if yes, it is determined to be a pre-PI indication, otherwise, it is determined to be a post-PI indication.

In some embodiments, after it is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted, a preemption indication may also be sent to the user equipment by using the downlink control information in the second time unit, and the second time unit is in the After the first time unit, the compatibility of other normal user equipments is considered to ensure the normal operation of other normal user equipments.

Please refer to FIG. 17. FIG. 17 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application.

Step S91: Receive a MAC PDU including a preemption indication from the base station, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.

Step S92: Decoding is performed after removing the part of the downlink transmission received in the first time unit that is transmitted using the preempted downlink resource.

After receiving the MAC PDU containing the preemption indication from the base station, the user equipment can decode the MAC PDU to obtain the downlink preemption indication information of the first time unit, and remove the downlink transmission received in the first time unit according to the downlink preemption indication information. The preempted part of the downlink resource transmission is then decoded.

In some embodiments, the user equipment may receive the preemption indication included in the downlink control information from the base station in a second time unit, which is after the first time unit.

In some embodiments, the preemption indication may include a first indicator, and the first indicator may be used to indicate that the preemption indication is before or after the preempted downlink resource.

In some embodiments, the transmission resource used by the MAC PDU including the preemption indication may be the downlink resource that is not preempted in the first time unit.

In some embodiments, the preemption indication may be a MAC CE in the MAC PDU.

Please refer to FIG. 18. FIG. 18 is a schematic diagram of a third embodiment of multi-terminal interaction in the method for processing resource preemption of the present application.

The third embodiment of the multi-terminal interaction of the resource preemption processing method may include:

1) The base station (gNB) determines that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and constructs the MAC UE (determines that the URLLC UE preempts at least part of the resources of the HD-FDD UE in the first time unit, constructs MAC CE).

2) The base station simultaneously sends a medium access control MAC protocol data unit PDU containing a preemption indication to the half-duplex user equipment and the URLLC device, and the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are seize.

3) The half-duplex user equipment (HD-FDD UE) receives the MAC PDU containing the preemption indication from the base station.

4) The half-duplex user equipment decodes the MAC CE, and performs decoding after removing the part transmitted using the preempted downlink resources in the downlink transmission received in the first time unit according to the decoded PI indication.

5) At the same time, the URLLC device can also decode, and the decoding is successful.

Please refer to FIG. 19. FIG. 19 is a schematic structural diagram of a first embodiment of a communication device of the present application.

As shown in FIG. 19 , the first embodiment of the communication device of the present application includes: a processor 110 , a memory 120 and a communication circuit 130 .

The processor 110 controls the operation of the communication device, and the processor 110 may also be referred to as a CPU (Central Processing Unit, central processing unit). The processor 110 may be an integrated circuit chip with processing capability of signal sequences. Processor 110 may also be a general purpose processor, digital signal sequence processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 120 stores instructions and data required for the operation of the processor 110 .

The processor 110 is configured to execute instructions to implement the methods provided by the foregoing embodiments and possible combinations of the resource preemption processing method applied to the base station side of the present application.

Please refer to FIG. 20, which is a schematic structural diagram of a second embodiment of a communication device of the present application.

As shown in FIG. 20 , the second embodiment of the communication device of the present application includes: a processor 210 , a memory 220 and a communication circuit 230 .

The processor 210 controls the operation of the communication device, and the processor 210 may also be referred to as a CPU (Central Processing Unit, central processing unit). The processor 210 may be an integrated circuit chip with processing capability of signal sequences. Processor 210 may also be a general purpose processor, digital signal sequence processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Memory 220 stores instructions and data required for processor 210 to operate.

The processor 210 is configured to execute instructions to implement the methods provided by the foregoing embodiments and possible combinations of the resource preemption processing method applied to the user equipment side of the present application.

Please refer to FIG. 21 , which is a schematic structural diagram of an embodiment of a readable storage medium of the present application.

As shown in FIG. 21 , the readable storage medium of the present application stores instructions 310 , and when the instructions 310 are executed by the processor, implement the methods provided by the embodiments and possible combinations of the resource preemption processing method of the present application.

The readable storage medium may include a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a flash memory (Flash Memory), a hard disk, an optical disk, and the like.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device implementations described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other divisions. For example, multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this implementation manner.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

The above description is only an embodiment of the present application, and is not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Claims

A resource preemption processing method, the method being applied to a base station side, characterized in that the method includes:

determining that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted;

Send a media access control MAC protocol data unit PDU including a preemption indication to the user equipment, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
The method of claim 1, wherein:

The user equipment is a half-duplex user equipment and/or a reduced capability user equipment.
The method according to claim 2, wherein the determining further comprises: after at least part of the downlink resources allocated to the user equipment in the first time unit are preempted:

judging whether the user equipment is in an uplink state in a second time unit, the second time unit is after the first time unit;

If yes, send the MAC PDU containing the preemption indication, otherwise, use the downlink control information to send the preemption indication to the user equipment in the second time unit.
The method according to claim 1, wherein the determining further comprises: after at least part of the downlink resources allocated to the user equipment in the first time unit are preempted:

The preemption indication is sent to the user equipment using downlink control information in a second time unit, which is after the first time unit.
The method of claim 1, wherein:

The preemption indication includes a first indicator, and the first indicator is used to indicate that the preemption indication is before or after the preempted downlink resource.
The method of claim 1, wherein:

The sending the MAC PDU containing the preemption indication to the user equipment includes:

The MAC PDU containing the preemption indication is sent by using the downlink resources that are not preempted in the first time unit.
The method according to any one of claims 1-6, wherein,

The preemption indication is a MAC control element CE in the MAC PDU.
A resource preemption processing method, the method being applied to a user equipment side, characterized in that the method includes:

receiving a MAC PDU including a preemption indication from the base station, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted;

Decoding is performed after removing the part of the downlink transmission received in the first time unit that is transmitted using the preempted downlink resource.
The method of claim 8, wherein:

The user equipment is a half-duplex user equipment and/or a reduced capability user equipment.
The method of claim 8, further comprising:

The preemption indication included in the downlink control information from the base station is received in a second time unit, which is after the first time unit.
The method of claim 8, wherein:

The preemption indication includes a first indicator, and the first indicator is used to indicate that the preemption indication is before or after the preempted downlink resource.
The method of claim 8, wherein:

The transmission resource used by the MAC PDU including the preemption indication is the downlink resource that is not preempted in the first time unit.
The method according to any one of claims 8-12, wherein,

The preemption indication is a MAC CE in the MAC PDU.
A communication device, comprising: a processor, a memory and a communication circuit, wherein the processor is connected to the communication circuit;

The memory stores instructions for execution by the processor to implement the method of any of claims 1-7.
A communication device, comprising: a processor, a memory and a communication circuit, wherein the processor is connected to the communication circuit;

The memory stores instructions for execution by the processor to implement the method of any of claims 8-13.
A readable storage medium storing instructions, wherein when the instructions are executed by a processor, the method according to any one of claims 8-13 is implemented.