Time-frequency block cancellation

Abstract

Apparatus, methods, systems and computer-readable media are disclosed. In one aspect, a wireless communication method is disclosed. The method includes receiving an uplink cancellation indication from a network node at a wireless terminal. The method also includes determining, at the wireless terminal, an allocation of reference uplink resources including a plurality of uplink time-frequency resources; and determining, by the wireless terminal, one or more of the plurality of uplink time-frequency resources to be cancelled according to the uplink cancellation indication. The method also includes cancelling, by the wireless terminal, uplink transmission on one or more of the plurality of uplink time-frequency resources determined based on the uplink cancellation indication.

Description

Technical Field

[0001] The present disclosure relates generally to digital wireless communications. Background Art

[0002] Mobile telecommunication technologies are driving the world towards an increasingly connected and networked society. Compared to existing wireless networks, next-generation systems and wireless communication technologies will need to support a wider range of use case characteristics and provide more complex and sophisticated access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the Third Generation Partnership Project (3GPP). The upgraded LTE (LTE Advanced, LTE-A) is a wireless communication standard that enhances the LTE standard. The fifth generation wireless system (i.e. 5G) advances the LTE and LTE-A wireless standards and is committed to supporting higher data rates, a large number of connections, ultra-low latency, high reliability and other emerging service requirements. Summary of the invention

[0004] Apparatus, methods, systems and computer-readable media are disclosed. In one aspect, a wireless communication method is disclosed. The method includes: receiving an uplink cancellation indication from a network node at a wireless terminal. The method also includes: determining, at the wireless terminal, an allocation of reference uplink resources including a plurality of uplink time-frequency resources; and determining, by the wireless terminal, one or more of the plurality of uplink time-frequency resources to be cancelled according to the uplink cancellation indication. The method also includes cancelling, by the wireless terminal, uplink transmission on one or more of the plurality of uplink time-frequency resources determined based on the uplink cancellation indication.

[0005] In another aspect, a wireless communication method includes: determining, by a network node, one or more of a plurality of uplink time-frequency resources to be cancelled. The method also includes sending an uplink cancellation indication from the network node to a wireless terminal.

[0006] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Depicted are examples of time-frequency domain resources partitioned into seven time blocks and four frequency blocks corresponding to exemplary reference uplink resources (RURs) in accordance with some exemplary embodiments.

[0008] Figure 2 Depicted are examples of a one-dimensional (1D) bitmap representing time-frequency resources in accordance with some exemplary embodiments.

[0009] Figure 3Depicted are two-dimensional (2D) bitmaps representing time-frequency resources according to some example embodiments.

[0010] Figure 4 Depicted are examples of a 2D time-frequency bitmap based on a time-domain ID bitmap, according to some example embodiments.

[0011] Figure 5 Depicted is an example diagram of a UE with low processing capability determining a RUR in accordance with some example embodiments.

[0012] Figure 6 Depicted is an example diagram of a UE with high processing capabilities determining a RUR in accordance with some example embodiments.

[0013] Figure 7 Depicted are example diagrams of UEs with different processing capabilities determining a RUR in accordance with some example embodiments.

[0014] Figure 8 Depicted are example diagrams of determining a RUR when UEs with different processing capabilities receive the same downlink control information (DCI) in accordance with some example embodiments.

[0015] Fig. 9 A first DCI and a first RUR and a second RUR are depicted according to some example embodiments.

[0016] Fig.10 Processes according to some exemplary embodiments are depicted.

[0017] Fig.11 Apparatus according to some example embodiments is depicted. DETAILED DESCRIPTION

[0018] The section headings used in this document are only for ease of understanding and do not limit the scope of the embodiments to the sections in which they are described. In addition, although the embodiments are described with reference to 5G examples, the disclosed technology can be applied to wireless systems using protocols other than 5G or 3GPP protocols.

[0019] The fifth generation (5G) mobile communication system supports a variety of application scenarios, including enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC) and massive machine type communication (mMTC).

[0020] For URLLC used in industrial automation, intelligent transmission, remote control, smart grid, and virtual reality, there are usually very strict requirements for end-to-end delay, such as 1ms or 0.5ms. In order to meet such requirements, network nodes need to schedule resources for transmission in a timely manner when the traffic arrives. However, the user equipment (UE) or wireless device may have another ongoing physical channel for sending or receiving eMBB traffic. In these cases, the processing timelines for the two channels of traffic may overlap, and the UE may not be able to simultaneously send or receive two overlapping channels at a given serving cell.

[0021] In order to ensure the ultra-high reliability and ultra-low latency of URLLC services, when the URLLC uplink service receives data, it is necessary to send data on the allocated transmission resources as soon as possible, but the resources may have been allocated to other uplink services (such as eMBB uplink services) before. When the URLLC service preempts part of the allocated resources for transmission, the base station sends the canceled downlink control information (DCI) to the user equipment (UE), and the UE determines the uplink cancellation indication information through DCI (uplink). The uplink cancellation indication (UL CI) in turn determines the canceled resources. A variety of indication methods are disclosed to indicate the reference uplink resources (RUR) divided into time-frequency resource blocks. Each time-frequency resource block of the RUR is indicated by a 2D bitmap or a 1D bitmap in the time domain. A 1D bitmap can be configured in the frequency domain to indicate that the time-frequency 2D resources are occupied by the bitmap, or a 1D bitmap can be configured for the time domain of the RUR and the frequency domain resources are indicated according to the occupancy of the time domain resources. URLLC services are deficient in some arrival scenarios. In addition, when there are UEs with different processing capabilities in a cell, the UEs with different capabilities may have inconsistent understandings of the RUR.

[0022] When the communication system instructs the URLLC service to preempt other services with lower latency requirements, there is currently no flexibility in selecting the resource indication method, and UEs with different processing capabilities cannot determine the RUR.

[0023] introduction

[0024] The technical problem to be solved is to overcome the problem of indicating resources including reference uplink resources (RUR) and cancelled uplink resources and adjusting the cancelled uplink resources across different UEs of different capabilities.

[0025] According to some exemplary embodiments, when the UE receives the DCI sent by the base station, the UE cancels uplink transmission on corresponding resources in the RUR according to the UL CI carried by the DCI.

[0026] In some exemplary embodiments, there are N candidate resource indication methods for indicating RUR and canceled resources. For example, see Examples 1 and 2 below. Described below are various indication methods, including:

[0027] 1) Use the distinguishing bit to clearly distinguish N indication methods;

[0028] 2) Scrambling the cyclic redundancy check (CRC) bits of the DCI by different radio network temporary identifiers (RNTIs) to distinguish N indication methods;

[0029] 3) N indication methods are implicitly distinguished by configuring different search spaces (SS) for DCI.

[0030] The candidate resource indication method also includes: 1) the time domain of the time-frequency resources is indicated by a 1D bit map, and the frequency domain of the time-frequency resources is indicated by a 1D bit map; 2) the time domain of the time-frequency resources is indicated by SLIV, and the frequency domain of the time-frequency resources is indicated by SLIV; 3) the time-frequency resources are represented by a 2D bit map; 4) the time domain of the time-frequency resources is indicated by a 1D bit map, and in the case where the time domain opportunity indication is indicated by the time domain 1D bit map, the time-frequency resources corresponding to the time domain opportunity are indicated by a 2D bit map; 5) the time domain of the time-frequency resources is indicated by a 1D bit map, and the frequency domain of the time-frequency resources is indicated by SLIV; 6) the time domain of the time-frequency resources is indicated by SLIV, and the frequency domain of the time-frequency resources is indicated by a 1D bit map.

[0031] Another method of indicating a candidate is as follows (for example, see Example 3 below): the time domain of the time-frequency resource is indicated by a 1D bitmap, and according to the time domain indication indicated by the time domain 1D bitmap, the time-frequency resource corresponding to the time domain opportunity is indicated by a 2D bitmap. In addition, the time domain 1D bitmap can determine the number of opportunities m indicated in the RUR. The remaining time-frequency indication resources are determined according to the m value and the total cost Q of the time-frequency indication, and the 2D bitmap is further determined according to the remaining time-frequency resources to indicate the time-frequency resource corresponding to the indicated time domain opportunity.

[0032] In some exemplary embodiments, the base station sends a DCI to the UE, the DCI carries the UL CI, and the UE cancels the uplink transmission based on the UL CI. The UE includes a first UE with weak signaling processing capability and a second UE with strong signaling processing capability, and DCI decoding is completed after X1 time domain symbols of the first UE are predefined. X2 time domain symbols complete the DCI decoding, and X1≥N, X2≤N. The value of N is a UE capability standard predefined by the protocol.

[0033] The DCI sent by the base station to the UE includes a first DCI and a second DCI, the first UE may receive the first DCI and the second DCI, and the second UE may receive the first DCI and the second DCI. For example, see Example 4 below.

[0034] In some exemplary embodiments, the two methods for the first UE to determine the RUR and update the CI indication information include the following:

[0035] Method 1: The first UE determines the start time of the RUR according to the location where the first DCI transmission ends. At this time, the resource indication information of the first UE is updated to the first UL CI, and the uplink transmission in the first RUR is canceled according to the first UL CI to ensure the transmission of higher priority services.

[0036] Method 2: The first UE determines the start time of the RUR according to the location where the second DCI transmission ends. At this time, the resource indication information of the first UE is updated according to the second UL CI. Specifically, the information indicating the third RUR in the first UE is updated to the information indicating the third RUR in the second UL CI.

[0037] In some exemplary embodiments, two methods for the second UE to determine the RUR and update the CI indication information include:

[0038] Method 1: The second UE determines the start time of the RUR according to the location where the first DCI transmission ends. At this time, the resource indication information of the second UE is updated to the first UL CI, and the uplink transmission in the first RUR is canceled according to the first UL CI to ensure the transmission of higher priority services.

[0039] Method 2: The second UE determines the start time of the RUR according to the location where the second DCI transmission ends. At this time, the resource indication information of the second UE is updated according to the second UL CI, and specifically, the information indicating the third RUR in the second UE is updated to the information corresponding to the third RUR in the second UL CI.

[0040] The DCI sent by the base station to the UE includes a first DCI and a second DCI. The first UE can only receive the first DCI, and the second UE can only receive the second DCI. For example, see Example 5 below.

[0041] In some exemplary embodiments, a method for determining, by a first UE, a RUR and updating CI indication information is as follows:

[0042] The first UE determines the start time of the RUR according to the location where the first DCI transmission ends. At this time, the resource indication information of the first UE is updated to the first UL CI, and the uplink transmission in the first RUR is canceled according to the first UL CI to ensure the transmission of higher priority services.

[0043] There are two methods for the second UE to determine the RUR and update the CI indication information, including:

[0044] The second UE determines the start time of the RUR according to the position where the second DCI transmission ends. At this time, the resource indication information of the second UE is updated to the second UL CI, and the uplink transmission in the second RUR is cancelled according to the second UL CI to ensure the transmission of higher priority services.

[0045] The base station sends a DCI to the UE, wherein the first UE and the second UE can receive the DCI, and the UL CI carried by the DCI is the sum of the first UL CI and the second UL CI. The first UL CI indicates the resources preempted by the first UE, and the second UL CI indicates the resources preempted by the second UE. See also Example 6 below.

[0046] In some exemplary embodiments, a method for determining a RUR by a first UE is as follows:

[0047] The first UE determines the start of the RUR based on the location where the DCI transmission ends. At this time, the first UE can cancel its own transmission in the first RUR to ensure the transmission of a higher priority service.

[0048] In some exemplary embodiments, a method for determining a RUR by a second UE is as follows:

[0049] The second UE determines the start of the RUR based on the location where the DCI transmission ends. At this time, the second UE can cancel its own transmission in the second RUR to ensure the transmission of a higher priority service.

[0050] Exemplary Embodiments

[0051] Example 1

[0052] In this embodiment, a method for a base station to select a resource indication method by distinguishing domains is described below.

[0053] In this embodiment, the time-frequency resource region to be indicated is called RUR. RUR is preferably one or more physical resource blocks (RBs) or one or more physical resource block groups (RBGs) in the frequency domain, and is determined by a predefined or semi-static configuration method. RUR is greater than or equal to the monitoring interval of the resource indication signaling in the time domain, and is determined by a predefined or semi-static configuration method. RUR is divided into multiple time domain opportunities, and each opportunity is one or more time domain symbols. For example, Figure 1 As shown, the RUR is divided into 7 time domain opportunities in the time domain, the real domain size is 7, and the partial bandwidth (BWP) in the frequency domain is divided into 4 parts, that is, the frequency domain size. For example, the time-frequency resource to be indicated is a time-frequency resource block indicated by (O2, F2) and (O4, F0). The candidate indication methods of RUR include at least the following six methods:

[0054] Method 1: The time domain of the time-frequency resource is composed of a 1D bitmap A 1×M Indicated by, and M is the time domain size. The frequency domain of the time-frequency resource is represented by a 1D bitmap B 1×N Indicated, and N is the frequency domain size. The 1D bitmap is determined by predefined or higher layer signaling configuration or physical layer signaling indication. Figure 2 As shown, in Figure 1 In the example of indicating resources, M = 7, N = 4, then A 1×M =(0010100), B1×N=(1010). When the value in the 1D bitmap is 1, this means indicating the time domain or the frequency domain. And when the value of the 1D bitmap is 0, this means not indicating the time domain or the frequency domain.

[0055] Method 2: The time domain of the time-frequency resource is indicated by a start and length indicator value (SLIV), and the frequency domain of the time-frequency resource is indicated by SLIV. The SLIV indication method is that the SLIV value indicates the starting position and duration of the resource. SLIV is determined by predefined or higher layer signaling configuration or physical layer signaling indication.

[0056] Method 3: The time-frequency pattern of the time-frequency resources is pre-determined. The time-frequency pattern is divided into multiple time-frequency resource blocks and is represented by a 2D bitmap C M×N , where M is the time domain size of the 2D bitmap, and N is the frequency domain size of the 2D bitmap. The 2D bitmap is determined by a predefined or higher layer signaling configuration or a physical layer signaling indication. Figure 3 As shown, M = 7, N = 4, then

[0057]

[0058] When the value of the 2-D bitmap is 1, time-frequency resources are indicated, and when the value of the 2-D bitmap is 0, resources in the time-frequency domain are not indicated.

[0059] Method 4: The time domain of the time-frequency resource is composed of a 1D bitmap A 1×M According to the time domain 1D bitmap, if m time domain opportunities are indicated, the time-frequency resources corresponding to the time domain opportunities are represented by the 2D bitmap C m×N Indication, and N is the frequency domain size in the 2D bitmap, that is, determined by predefined or higher layer signaling configuration or physical layer signaling indication, or determined according to the remaining indication resource q=QM, where Q is the total cost of the time-frequency indication. Figure 4 As shown, M = 7, m = 2, N = 8, then A can be configured 1×M =(0010100).

[0060]

[0061] For the 1D bitmap and 2D bitmap, a value of 1 indicates that the resource is indicated, and a value of 0 indicates that the resource is not indicated.

[0062] Method 5: The time domain of the time-frequency resource is indicated by the 1D bitmap A 1×M and M is the time domain size. The frequency domain of the time-frequency resource is indicated by the SLIV. The SLIV indication method is that the SLIV value represents the start position and duration of the resource. The 1D bitmap and the SLIV are indicated by physical layer signaling or configured by higher layer signaling.

[0063] Method 6: The time domain of the time-frequency resource is indicated by the SLIV, and the SLIV indication method is that the SLIV value represents the start position and duration of the resource. The frequency domain of the time-frequency resource is indicated by the 1D bitmap B 1×N and N is the frequency domain size. The 1D bitmap and the SLIV are indicated by physical layer signaling or configured by higher layer signaling.

[0064] The candidate indication methods are not limited to the above six indication methods.

[0065] These two indication methods are selected from the above six candidate methods or other indication methods by predefined or higher layer signaling configuration, and are recorded as Method A and Method B. The base station determines one of Method A and Method B as the RUR indication method, and the methods for the base station to determine the RUR indication method include at least one of the following:

[0066] Method 1: Clearly distinguish between the two indication methods by 1 bit. The base station introduces a differentiation field, which contains a 1-bit differentiation bit. When the value of the differentiation bit is 0, Method A is selected as the indication method for RUR, and when the value of the differentiation bit is 1, Method B is selected as the indication method for RUR.

[0067] The differentiation bit can be indicated by physical layer signaling or configured by higher layer signaling. Specifically, the value of the differentiation bit is set according to the actual occupancy of the time domain opportunity in the RUR. A threshold L is predefined or configured by higher layer signaling, where L ≤ M. When the number of actually occupied time domain opportunities m > L, the differentiation bit is set to 0, and when the number of actually occupied time domain opportunities m < L, the differentiation bit is set to 1; or when m > L, the differentiation bit is set to 0, and when m < L, the differentiation bit is set to 1.

[0068] In this embodiment, it is assumed that candidate indication method 1 is Method A, and candidate indication method 3 is Method B. The RUR is at Figure 1The definition in is taken as an example. As shown in Table 1, method 1 and method 3 indicate frequency domain granularity statistics when the actual number of time domain opportunity occupancy is different. The setting of L follows the principle of making the frequency domain granularity indicated by the selected indication method finer, and L is set to 5. When L<5, method B is selected, and when L>5, method A is selected. When L=5, you can select either method.

[0069] Method 2: Scramble the CRC bits of the DCI with different RNTIs, implicitly distinguishing between the two indication methods. The base station divides multiple RNTIs into two groups, A and B, through pre-defined or high-level signaling configuration, and each group of RNTIs includes at least one RNTI. If the UE receives a DCI scrambled by the RNTI of group A, it determines that method A is the indication method of RUR. If the UE receives a DCI scrambled by the RNTI of group B, it determines that method B is the indication method of RUR.

[0070] Method 3: Configure different SS implicit indications through high-layer signaling. High-layer signaling configures two types of SS A and B for DCI. The UE blindly checks the DCI in both types of SS. If DC is detected in the A SS, method A is selected as the indication method for RUR. If DC is detected in the B SS, method B is selected as the indication method for RUR.

[0071] The base station can flexibly select an indication method for indicating the RUR according to the frequency domain, which is conducive to full utilization of indication resources and gives full play to the advantages of the indication method to further reduce erroneous indications and refine frequency domain indications.

[0072] Table 1

[0073]

[0074] Example 2

[0075] In this embodiment, a method for a base station to select a resource indication method by distinguishing domains is described.

[0076] In this embodiment, the RUR is preferably one or more RBs or one or more RBGs in the frequency domain and is determined by a predefined or semi-static configuration method. The RUR is greater than or equal to the monitoring interval of the resource indication signaling in the time domain and is determined by a predefined or semi-static configuration method. The RUR is divided into multiple time domain opportunities, and each opportunity is one or more time domain symbols. The candidate indication methods of the RUR include the six indication methods described in Example 1 and other indication methods.

[0077] Method A, Method B, and Method C are selected from the six candidate methods described in Example 1 or other methods by a method configured by predefined or high-layer signaling. The base station selects one of the above three methods as the RUR indication method according to the differentiation domain, and the methods for the base station to distinguish Method A and Method B include at least one of the following:

[0078] Method 1: Clearly distinguish the three indication methods by 2 bits. The base station introduces a differentiation domain, which contains 2 differentiation bits. For example, when the bit value is 00, Method A can be selected as the RUR indication method; when the bit value is 01, Method B can be selected as the RUR indication method; and when the bit value is 11, Method C can be selected as the RUR indication method.

[0079] The differentiation bits can be indicated by physical layer signaling or configured by high-layer signaling. Specifically, the differentiation bit value is set according to the actual occupation of the time domain opportunity in the RUR. Two thresholds L1 and L2 are configured by predefined or high-layer signaling, where L1 < L2 and L2 ≤ M. When the number of actually occupied time domain opportunities m ≤ L1, the differentiation bits are set to 00; then when L1 < m ≤ L2, the differentiation bits are set to 01; when m > L2, the differentiation bits are set to 10; or when m < L1, the differentiation bits are set to 00; when L1 ≤ m ≤ L2, the differentiation bits are set to 01; and when m ≥ L2, the differentiation bits are set to 10.

[0080] Method 2: Scramble the CRC bits of the DCI by different RNTIs to implicitly distinguish the three indication methods. The RNTIs are divided into three groups A, B, and C by predefined or high-layer signaling configuration, and each group of RNTIs includes at least one RNTI. The UE receives the DCI scrambled by the RNTI in Group A and determines to select Method A as the indication method for the RUR. If the UE receives the DCI scrambled by the RNTI in Group B, it determines to select Method B as the indication method for the RUR. The UE receives the DCI scrambled by the RNTI in Group C and determines to select Method C as the indication method for the RUR.

[0081] Method 3: Implicitly indicate by configuring different SSs through high-layer signaling. The high-layer signaling configures three types of SSs, namely A, B, and C, for the DCI. The UE blindly checks the DCI in the SS. If the DCI is detected in SS A, Method A is selected as the indication method for the RUR. If the DCI is detected in SS B, Method B is selected as the indication method for the RUR. If the DCI is detected in SS C, Method C is selected as the indication method for the RUR.

[0082] The above embodiments can also extend the selection of P indication methods, where P. For the above Method 1, P - 1 thresholds L are configured by predefined or RRC signaling i(i=1,...,P-1), the distinguishing bit is bits, and indicates at least P states; for the above method 2, the base station divides multiple RNTIs into predefined or higher layer signaling configuration modes. In the P group, the P state is indicated. For the above method 3, the high layer signaling configures the DCI with a P-type SS, and the UE blindly checks the DCI in the P-configured SS to indicate the P-state.

[0083] The base station can flexibly select an indication method for indicating the RUR according to the frequency domain, which is conducive to full utilization of indication resources and gives full play to the advantages of the indication method to further reduce erroneous indications and refine frequency domain indications.

[0084] Example 3

[0085] This embodiment includes a method for a base station to indicate time-frequency resource occupancy to a terminal by using the described domain-specific resource selection indication method.

[0086] In this embodiment, the RUR is preferably one or more RBs or one or more RBGs in the frequency domain, and is determined by a predefined or semi-static configuration method. The RUR is greater than or equal to the monitoring interval of the resource indication signaling in the time domain, and is determined by a predefined or semi-static configuration method. The RUR is divided into M time domain opportunities, and each opportunity is one or more time domain symbols. The candidate indication method 4 in embodiment 1 determines the number of opportunities indicated in the RUR through a time domain 1D bitmap. The remaining time-frequency indication resources are determined according to the m value and the total time-frequency indication cost Q, and a 2D bitmap indicating the time-frequency resources corresponding to the indicated time domain opportunity is determined. Specifically, a method for determining a 2D bitmap mainly includes the following two methods:

[0087] Method 1: The time domain size of the 2D bitmap is equal to m, and the frequency domain size N of the 2D bitmap is indicated by a predefined or higher layer signaling configuration or indicated by a physical layer signaling. For example, when m=1, N can be configured by a predefined or higher layer signaling configuration or physical layer signaling as 16, and when m=2, N can be configured by a predefined or higher layer signaling configuration or physical layer signaling as 8.

[0088] Method 2: The total resource overhead indicated by the time-frequency resource is set to Q by pre-definition or physical layer or higher layer signaling, and the bit resources available for the 2D bitmap are q=QM, and the number of opportunities indicated is determined according to the 1D bitmap. In order to ensure that the frequency domain granularity corresponding to each indicated time domain opportunity is consistent, the method for determining the frequency domain size N of the 2D bitmap includes at least one of the following cases:

[0089] (a) When q is divisible by n, q ≥ m, and the time domain size of the 2D bitmap is m, the frequency domain size N of the 2D bitmap is

[0090] (b) When q is not divisible by m, q > m, and the time domain size of the 2D bitmap is m, the frequency domain size N of the 2D bitmap is

[0091] (c) Set the occupancy ignore parameter k (k < m), update the indicated number of timing instants to m - k, that is, the time domain size of the 2D bitmap is m - k, and then determine the frequency domain size of the 2D bitmap according to methods (a) and (b). The parameter k can be determined by a predefined method, or indicated by a physical layer indication, or configured by a high layer signaling.

[0092] In this embodiment, a 2D bitmap of the time-frequency resource corresponding to the indicated time domain can be determined, and the base station can flexibly divide the frequency domain indication granularity of the time domain, which is beneficial to refining the frequency domain resources.

[0093] Example 4

[0094] The solutions described in Examples 1 - 3 can be established on the basis of the determined RUR. In this embodiment, a method for determining the RUR based on the UE capabilities and updating the resource indication information is described.

[0095] In this embodiment, the base station sends the first DCI and the second DCI. Among them, the first DCI carries the first UL CI, and the second DCI carries the second UL CI. Specifically, the first UL CI indicates the first RUR resource occupancy, and the second UL CI indicates the second RUR resource occupancy. The first UE and the second UE can perform uplink transmissions. The signaling processing capability of the first UE is weak, and when the first UE receives the DCI, the UE completes the DCI decoding and resource cancellation after X1 time domain symbols. The signaling processing capability of the second UE is stronger, and when the second UE receives the DCI, the UE completes the DCI decoding and resource cancellation after X2 time domain symbols. X1 ≥ W, X2 ≤ W. W is the UE capability standard predefined by the protocol. The first UE can receive the first DCI and the second DCI, and the second UE can receive the first DCI and the second DCI.

[0096] There are two methods for the first UE to determine the RUR and update the CI indication information as follows:

[0097] Method 1: The first UE determines the start time of the RUR according to the time when the first UE receives the first DCI. The start time of the first RUR is X1 symbols after the end domain symbol of the first DCI, and X1 ≥ W. The length of the first RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the resource indication information of the first UE is updated to the first UL CI, and the uplink transmission in the first RUR is canceled according to the resource indication information to ensure higher priority transmission.

[0098] Method 2: The first UE determines the start time of the RUR based on the time when the first UE receives the second DCI. The start time of the second RUR is X2 symbols after the end time domain symbol of the first DCI, and X2≤W. The length of the second RUR is determined by a predefined or higher layer signaling configuration or a physical layer signaling indication. At this time, the resource indication information of the first UE is updated according to the second UL CI. Specifically, the information indicating the third RUR in the first UE is updated to the information corresponding to the third RUR in the second UL CI. The start time of the third RUR is X1 symbols after the last time domain symbol of the second DCI. When the last symbol of the first RUR is before the last symbol of the second RUR, the last symbol of the third RUR is the last symbol of the first RUR endpoint, and when the last symbol of the second RUR is before the last symbol of the first RUR, the third RUR endpoint is equal to the last symbol of the second RUR.

[0099] In addition, if Figure 5 As shown, when the first UE receives the first DCI and the second DCI, and the first DCI arrives before the second DCI, the first UE first determines the resource indication information according to the first UL CI. Then the resource indication information is updated according to the second UL CI, wherein the updated part is the information indicating the third RUR. Assume that the lengths of the first RUR and the second RUR are 7 time domain opportunities, and the length of the third RUR is 3 time domain opportunities. The time domain bitmap of the first UL CI is 010 010 0, where bits 4-6 indicate the third RUR, and the time domain indication bitmap of the second UL CI is 0000 111 , and the last three bits indicate the third RUR. After receiving the second UL CI, the first UE updates the indication information of the third RUR and retains the indication information of other resources, and finally obtains a new UL CI 010 111 0. The bold and underlined parts are indicative of the third RUR.

[0100] There are two methods for the second UE to determine the RUR and update the CI indication information, including:

[0101] Method 1: The second UE determines the start time of the RUR according to the time when the second UE receives the first DCI. The start time of the first RUR is X1 symbols after the end domain symbol of the first DCI, and X1 ≥ W. The length of the first RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the resource indication information of the second UE is updated to the first UL CI, and the uplink transmission in the first RUR is canceled according to the resource indication information to ensure higher priority transmission.

[0102] Method 2: The second UE determines the start time of the RUR according to the time when the second UE can receive the second DCI. The start time of the second RUR is X2 symbols after the end time domain symbol of the second DCI, and X2≤W. The length of the second RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the resource indication information of the second UE is updated according to the second UL CI, and specifically, the information indicating the third RUR in the second UE is updated to the information corresponding to the third RUR in the second UL CI. When the start time of the first RUR is after the start time of the second RUR, the start time of the third RUR is the start time of the first RUR, and when the start time of the second RUR is after the start time of the first RUR, the start time of the third RUR is the start time of the second RUR. When the last time domain symbol of the first RUR is after the last time domain symbol of the second RUR, the last time domain symbol of the third RUR is the last time domain symbol of the second RUR, and when the last time domain symbol of the second RUR is after the last time domain symbol of the first RUR, the last time domain symbol of the third RUR is the last time domain symbol of the first RUR.

[0103] In addition, if Figure 6 As shown, when the second UE receives the first DCI and the second DCI, and the first DCI arrives before the second DCI, the second UE first determines the resource indication information according to the first UL CI. Then the resource indication information is updated according to the second UL CI, wherein the updated part is the information indicating the third RUR. Assume that the lengths of the first RUR and the second RUR are 7 time domain opportunities, the length of the third RUR is 6 time domain opportunities, and the time domain bitmap of the first UL CI is 000000 0, where bits 1-6 indicate the third RUR, and the time domain bitmap of the second UL CI is 1 110111 , where bits 2-7 indicate the third RUR. Update the indication information of the third RUR and retain the indication information of other resources, and finally the new 8-bit CI is 1 110111 0. The bold and underlined parts indicate the third RUR.

[0104] Example 5

[0105] The solutions described in Examples 1-3 may be established on the determined RUR. In this embodiment, a method for determining the RUR based on UE capabilities is specifically described.

[0106] In this embodiment, the base station sends a first DCI and a second DCI, wherein the first DCI carries a first UL CI and the second DCI carries a second UL CI. The first UE and the second UE can perform uplink transmission. The signaling processing capability of the first UE is weak, and when the first UE receives the DCI, the UE completes DCI decoding and resource cancellation after X1 time domain symbols. The signaling processing capability of the second UE is stronger, and when the second UE receives the DCI, the UE completes DCI decoding and resource cancellation after X2 time domain symbols. X1≥W, X2≤W. W is a UE capability standard predefined by the protocol. The first UE can receive the first DCI, and the second UE can receive the second DCI.

[0107] The method for determining the RUR by the first UE is as follows:

[0108] The first UE determines the start time of the RUR according to the time when the first UE receives the first DCI. Figure 7 As shown, the first UE may receive the first DCI, and the start time of the first RUR is X1 symbols after the end domain symbol of the first DCI, and X1 ≥ W. The length of the first RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the first UE may cancel its own transmission in the first RUR to ensure higher priority transmission.

[0109] The method for determining the RUR by the second UE is as follows:

[0110] The second UE determines the start time of the RUR according to the time when the second UE receives the second DCI. Figure 7 As shown, the second UE may receive the second DCI, and the start time of the second RUR is X2 symbols after the end domain symbol of the first DCI, and X2≤W. The length of the second RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the second UE may cancel its own transmission in the second RUR to ensure higher priority transmission.

[0111] Example 6

[0112] The solutions described in Examples 1-3 may be established on the determined RUR. In this embodiment, a method for determining the RUR based on UE capabilities is specifically described.

[0113] The implementation of the technical solution is further described in detail below with reference to the accompanying drawings:

[0114] In this embodiment, the base station sends a DCI, wherein the DCI carries a UL CI. The first UE and the second UE can perform uplink transmission. The signaling processing capability of the first UE is weak, and when the first UE receives the DCI, the UE completes the DCI decoding and resource cancellation after X1 time domain symbols. The signaling processing capability of the second UE is stronger, and when the second UE receives the DCI, the UE completes the DCI decoding and resource cancellation after X2 time domain symbols. X1≥W, X2≤W. The first UE and the second UE can receive the DCI.

[0115] The method for determining the RUR by the first UE is as follows:

[0116] The first UE determines the start time of the RUR according to the time when the first UE receives the DCI. Figure 8 As shown, the first UE can receive DCI. The start time of the first RUR is X1 symbols after the end domain symbol of the DCI, and X1≥W. The length of the first RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the first UE can cancel its own transmission in the first RUR to ensure higher priority transmission.

[0117] The method for determining the RUR by the second UE is as follows:

[0118] The second UE determines the start time of the RUR according to the time when the first UE receives the DCI. Figure 8 As shown, the second UE can receive the DCI. The start time of the second RUR is X2 symbols after the end domain symbol of the DCI, and X2≤W. The length of the second RUR is determined by predefined or higher layer signaling configuration or physical layer signaling indication. At this time, the second UE can cancel its own transmission in the second RUR to ensure a higher priority transmission.

[0119] In addition, if Figure 8 As shown, the UL CI of the DCI is used to indicate the combined information of the first UE and the second UE. The indication information of the first UE is 0110000, and the indication information of the second UE is 1000000. The UL CI indication information of the DCI is the union of the two indication information, that is, 1110000.

[0120] Example 7

[0121] The solutions described in Examples 1-3 may be established on the determined RUR. In this embodiment, a method for determining the RUR based on UE capability is specifically described.

[0122] In this embodiment, the base station sends a DCI, wherein the DCI carries a UL CI. The first UE and the second UE can perform uplink transmission. The signaling processing capability of the first UE is relatively weak, and when the first UE receives the DCI, the UE completes the DCI decoding and resource cancellation after X1 time domain symbols. The signaling processing capability of the second UE is relatively strong, and when the second UE receives the DCI, the UE completes the DCI decoding and resource cancellation after X2 time domain symbols. X1≥W. At this time, the first UE and the second UE can receive the DCI.

[0123] A method for determining a RUR by a first UE is as follows:

[0124] The first UE determines the start time of the RUR according to the time when the first UE receives the DCI. Fig. 9 As shown, the first UE may receive the DCI. The start time of the first RUR is X1 symbols after the end domain symbol of the DCI, and X1≥W. At this time, the first UE may cancel its transmission in the first RUR to ensure a higher priority transmission.

[0125] A method for determining the RUR by the second UE is as follows:

[0126] The second UE determines the start time of the RUR according to the time when the first UE receives the DCI. Fig. 9 As shown, the second UE can receive the DCI. The start time of the second RUR is X1 symbols after the end domain symbol of the DCI, and X1≤W. At this time, the second UE can cancel its own transmission in the second RUR to ensure a higher priority transmission.

[0127] In addition, if the lengths of the first RUR and the second RUR are equal, the first RUR and the second RUR are the same RUR. The first UE and the second UE have the same understanding of the UL CI. If the lengths of the first RUR and the second RUR are not equal, the first RUR and the second RUR are not the same RUR. The understanding of the UL CI is related to the length of the first RUR and the length of the second RUR. For example, the first RUR size is 5, the second RUR size is 7, the UL CI representation bitmap is 0110101, the UL CI understood by the first UE is 01101, and the UL CI understood by the second UE is 0110101.

[0128] Fig.10A process 1000 is depicted in accordance with some exemplary embodiments. At 1010, the process includes receiving, at a wireless terminal, an uplink cancellation indication from a network node. At 1020, the process includes determining, at the wireless terminal, an allocation of reference uplink resources including a plurality of uplink time-frequency resources. At 1030, the process includes determining, by the wireless terminal, one or more of the plurality of uplink time-frequency resources to cancel based on the uplink cancellation indication. At 1040, the process includes canceling, by the wireless terminal, uplink transmissions on the determined one or more of the plurality of uplink time-frequency resources based on the uplink cancellation indication.

[0129] In another exemplary embodiment, a method includes receiving an uplink cancellation indication from a network node at a wireless terminal. The method also includes determining, by the wireless terminal, an allocation of reference uplink resources including a plurality of uplink time-frequency resources, and determining, by the wireless terminal, one or more of the plurality of uplink time-frequency resources to be cancelled based on the uplink cancellation indication. The method also includes canceling, by the wireless terminal, uplink transmission on one or more of the plurality of uplink time-frequency resources determined based on the uplink cancellation indication, and performing transmission of one or more reference uplink resources not included in the uplink cancellation indication.

[0130] Fig.11 A block diagram 1100 representing a portion of a radio station is depicted. A radio station 1100, such as a network node or base station or a wireless device (or UE), may include one or more processors 1110, such as a microprocessor implementing one or more wireless technologies presented in this document. The radio station 1100 may include a transmitter electronics 1115 for sending wireless signals through one or more communication interfaces such as antennas and a receiver electronics 1120 for receiving wireless signals. The radio station 1100 may include other communication interfaces for sending and receiving data. The radio station 1100 may include one or more memories 1105 configured to store information such as data and / or instructions. In some embodiments, the processor electronics 1110 may include at least a portion of the transceiver electronics 1120 / 1115. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the radio station 1100.

[0131] Some embodiments may preferably implement one or more of the following solutions listed in a clause format. The following clauses are supported and further described in the above examples and this document. As used in the following clauses and claims, a wireless terminal may be a user equipment, a mobile station, or any other wireless terminal including a fixed node (such as a base station). A network node includes a base station, which includes a next generation Node B (gNB), an enhanced Node B (eNB), or any other device that performs as a base station. A resource range may refer to a range of time-frequency resources or blocks.

[0132] Clause 1: A wireless communication method, comprising: receiving an uplink cancellation indication from a network node at a wireless terminal; determining, by the wireless terminal, an allocation of reference uplink resources comprising a plurality of uplink time-frequency resources; determining, by the wireless terminal, one or more of the plurality of uplink time-frequency resources to be canceled based on the uplink cancellation indication; and canceling, by the wireless terminal, uplink transmission on one or more of the plurality of uplink time-frequency resources determined based on the uplink cancellation indication.

[0133] Clause 2: The wireless communication method according to Clause 1 further includes: at the wireless terminal, determining an uplink cancellation indication method from a plurality of predefined cancellation indication methods, wherein the uplink cancellation indication method is used to determine one or more of a plurality of uplink time-frequency resources to be canceled.

[0134] Clause 3: The wireless communication method of clause 2, wherein determining the uplink cancellation indication method from a plurality of predefined cancellation indication methods is performed using one or more distinguishing bits.

[0135] Clause 4: A wireless communication method according to clause 2, wherein determining the uplink cancellation indication method from a plurality of predefined cancellation indication methods is performed using a radio network temporary identifier (RNTI) different from the wireless terminal used for the uplink cancellation indication.

[0136] Clause 5: The wireless communication method of clause 2, wherein determining the uplink cancellation indication method from a plurality of predefined cancellation indication methods is performed using different search spaces for uplink cancellation indications.

[0137] Clause 6: The wireless communication method according to Clause 1 further includes: representing the reference uplink resources in the time domain as a one-dimensional (1D) bitmap, and representing the time-frequency domain corresponding to the cancelled time domain resources as a two-dimensional (2D) bitmap.

[0138] Clause 7: The wireless communication method according to clause 1 further includes: determining a start time of referencing the uplink resource after receiving the uplink cancellation indication based at least on a processing capability of the wireless terminal.

[0139] Clause 8: The wireless communication method according to Clause 7 further includes: determining a first processing time based on the first processing capability; and determining a second processing time based on the second processing capability, wherein the first processing time is longer than the second processing time.

[0140] Clause 9: The wireless communication method of clause 8, further comprising: receiving, at the wireless terminal, an uplink cancellation indication and a second uplink cancellation indication.

[0141] Clause 10: The wireless communication method according to Clause 9 further includes: determining by the wireless terminal that the start time of a reference uplink resource is a first processing time after the last time domain symbol of an uplink cancellation indication; and determining by the wireless terminal that the start time of a second reference uplink resource is a second processing time after the last time domain symbol of a second uplink cancellation indication.

[0142] Clause 11: The wireless communication method of clause 8, further comprising: receiving, at the wireless terminal, a second uplink cancellation indication from the network node; and updating the uplink cancellation indication based on the second uplink cancellation indication.

[0143] Clause 12: A wireless communication method according to clause 11, wherein updating the uplink cancellation indication based on the second uplink cancellation indication comprises: determining a resource range to be updated in one or more of a plurality of uplink time-frequency resources; and determining that the start time of the resource range is the first processing time after the last time domain symbol of the second uplink cancellation indication, and the end time of the resource range is the last time domain symbol overlapping between the first reference uplink resource and the second reference uplink resource.

[0144] Clause 13: A wireless communication method according to clause 11, wherein updating the uplink cancellation indication based on the second uplink cancellation indication comprises: determining a resource range to be updated in one or more of a plurality of uplink time-frequency resources; and determining that the start time of the resource range is the first time domain symbol of overlap between the first reference uplink resource and the second reference uplink resource, and the end time of the resource range is the last time domain symbol of overlap between the first reference uplink resource and the second reference uplink resource.

[0145] Clause 14: The wireless communication method according to Clause 7 further includes: determining a first processing time based on a first processing capability of the first wireless terminal; and determining a second processing time based on a second processing capability of the second wireless terminal, wherein the first processing time is longer than the second processing time.

[0146] Clause 15: The wireless communication method according to Clause 9 further includes: determining, by the second wireless terminal, that the start time of the reference uplink resource is a first processing time after the last time domain symbol of the uplink cancellation indication.

[0147] Clause 16: A wireless communication method, comprising: determining, by a network node, one or more of a plurality of uplink time-frequency resources to be cancelled; and sending, by the network node, an uplink cancellation indication to a wireless terminal.

[0148] Clause 17: The wireless communication method according to Clause 16 further includes: determining an uplink cancellation indication method from a plurality of predefined cancellation indication methods at a network node, wherein the uplink cancellation indication method is used to determine one or more of a plurality of uplink time-frequency resources to be canceled.

[0149] Clause 18: The wireless communication method of clause 17, wherein determining the uplink cancellation indication method from a plurality of predefined cancellation indication methods is performed using one or more distinguishing bits.

[0150] Clause 19: A wireless communication method according to clause 17, wherein determining the uplink cancellation indication method from a plurality of predefined cancellation indication methods is performed using a radio network temporary identifier (RNTI) different from the wireless terminal used for the uplink cancellation indication.

[0151] Clause 20: The wireless communication method of clause 17, wherein determining the uplink cancellation indication method from a plurality of predefined cancellation indication methods is performed using different search spaces for uplink cancellation indications.

[0152] Clause 21: The wireless communication method of clause 1, wherein the uplink cancellation indication is included in downlink control information (DCI).

[0153] Clause 22: The wireless communication method of clause 16, wherein the uplink cancellation indication is included in downlink control information (DCI).

[0154] Clause 23: An apparatus comprising a processor configured to implement the method according to one or more of clauses 1 to 22.

[0155] Clause 24: A computer program product having stored thereon a code, wherein the code, when executed by a processor, causes the processor to carry out the method according to one or more of clauses 1 to 22.

[0156] Some embodiments described herein are described in the general context of methods or processes, which may be implemented in one embodiment by a computer program product, embodied in a computer-readable medium, including computer-executable instructions, such as program codes, executed by a computer in a network environment. Computer-readable media may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), compact disk (CD), digital versatile disk (DVD), etc. Therefore, computer-readable media may include non-transitory storage media. Typically, program modules may include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. Computer or processor executable instructions, associated data structures, and program modules represent examples of program codes for executing the steps of the methods disclosed herein. A specific sequence of such executable instructions or associated data structures represents an example of corresponding actions for implementing the functions described in these steps or processes.

[0157] Some disclosed embodiments can be implemented as devices or modules using hardware circuits, software or a combination thereof. For example, a hardware circuit implementation may include discrete analog and / or digital components, which are, for example, integrated as a part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may be implemented as application specific integrated circuits (ASICs) and / or as field programmable gate arrays (FPGAs) devices. Some embodiments may additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor having an optimized architecture for the operational requirements of digital signal processing associated with the disclosed functions of the present application. Similarly, various components or subcomponents within each module may be implemented in software, hardware or firmware. Connectivity between modules and / or components within a module may be provided using any of connection methods and media known in the art, including but not limited to communications performed over the Internet, wired or wireless networks using appropriate protocols.

[0158] Although this document contains many details, these details should not be interpreted as limitations on the scope of the claimed invention or the invention that may be claimed, but rather as descriptions of features specific to a particular embodiment. Certain features described in this document in the context of separate embodiments may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented in multiple embodiments or in any suitable sub-combination, respectively. Moreover, although the features may be described above as working in certain combinations and even initially claimed as such, one or more features in the claimed combination may be cut out of the combination in some cases, and the claimed combination may be directed to a sub-combination or a variation of the sub-combination. Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring such operations to be performed in the particular order shown or in a continuous order, or to perform all of the operations shown to achieve the desired result.

[0159] Only a few implementations and examples are described, and other implementations, enhancements, and variations may be implemented based on what is described and illustrated in this disclosure.

Claims

1. A wireless communication method, comprising: receiving, at a wireless terminal from a network node, first downlink control information including a first uplink cancellation indication and second downlink control information including a second uplink cancellation indication; The wireless terminal determines, based on the position where the first downlink control information ends, a start time of a first reference uplink resource including a plurality of uplink time-frequency resources, and determines, based on the position where the second downlink control information ends, a start time of a second reference uplink resource; The wireless terminal determines one or more of the multiple uplink time-frequency resources to be canceled according to the first uplink cancellation indication and the second uplink cancellation indication; as well as The wireless terminal cancels uplink transmission on one or more uplink time-frequency resources determined among the multiple uplink time-frequency resources based on the start time of the first reference uplink resource or the start time of the second reference uplink resource.

2. The wireless communication method according to claim 1, further comprising: An uplink cancellation indication method is determined at the wireless terminal from a plurality of predefined cancellation indication methods, wherein the uplink cancellation indication method is used to determine one or more of the plurality of uplink time-frequency resources to be canceled.

3. The wireless communication method according to claim 2, wherein: Determining the uplink cancellation indication method from among the plurality of predefined cancellation indication methods is performed using one or more distinguishing bits.

4. The wireless communication method according to claim 2, wherein: Determining the uplink cancellation indication method from among the plurality of predefined cancellation indication methods is performed using a radio network temporary identifier (RNTI) different from that of the wireless terminal.

5. The wireless communication method according to claim 2, wherein: Determining the uplink cancellation indication method from among the plurality of predefined cancellation indication methods is performed using different search spaces.

6. The wireless communication method according to claim 1, further comprising: The first reference uplink resource and the second reference uplink resource in the time domain are represented as a one-dimensional (1D) bitmap, and the time-frequency domain corresponding to the cancelled time domain resources is represented as a two-dimensional (2D) bitmap.

7. The wireless communication method according to claim 1, wherein: The wireless terminal is a first wireless terminal with a first processing capability or a second wireless terminal with a second processing capability, wherein the start time of the first reference uplink resource is determined based on the first processing capability of the first wireless terminal, and the start time of the second reference uplink resource is determined based on the second processing capability of the second wireless terminal, wherein the first processing time based on the first processing capability is longer than the second processing time based on the second processing capability.

8. The wireless communication method according to claim 7, further comprising: determining the first processing time based on the first processing capability; and The second processing time is determined based on the second processing capability, wherein the first processing time is longer than the second processing time.

9. The wireless communication method according to claim 8, wherein: The start time of the first reference uplink resource is a first signaling processing time after the last time domain symbol of the first uplink cancellation indication; and The start time of the second reference uplink resource is a second signaling processing time after the last time domain symbol of the second uplink cancellation indication.

10. The wireless communication method according to claim 8, further comprising: The first uplink cancellation indication is updated based on the second uplink cancellation indication.

11. The wireless communication method according to claim 10, wherein: Updating the first uplink cancellation indication based on the second uplink cancellation indication includes: determining a resource range to be updated in one or more of the plurality of uplink time-frequency resources; and The starting time of the resource range is determined to be the first processing time after the last time domain symbol of the second uplink cancellation indication, and the ending time of the resource range is the last time domain symbol overlapping between the first reference uplink resource and the second reference uplink resource.

12. The wireless communication method according to claim 10, wherein: Updating the first uplink cancellation indication based on the second uplink cancellation indication includes: determining a resource range to be updated in one or more of the plurality of uplink time-frequency resources; and The starting time of the resource range is determined to be the first time domain symbol overlapping between the first reference uplink resource and the second reference uplink resource, and the ending time of the resource range is the last time domain symbol overlapping between the first reference uplink resource and the second reference uplink resource.

13. The wireless communication method according to claim 8, wherein: The start time of the first reference uplink resource is a first signaling processing time after the last time domain symbol of the first uplink cancellation indication.

14. A wireless communication method, comprising: Determining, by the network node, one or more of the plurality of uplink time-frequency resources to be cancelled; and The network node sends first downlink control information including a first uplink cancellation indication and second downlink control information including a second uplink cancellation indication to the wireless terminal, wherein the start time of the first reference uplink resource is based on the position where the first downlink control information ends and the start time of the second reference uplink resource is based on the position where the second downlink control information ends, One or more of the multiple uplink time-frequency resources to be canceled are determined according to the first uplink cancellation indication and the second uplink cancellation indication.

15. The wireless communication method according to claim 14, further comprising: An uplink cancellation indication method is determined at the network node from a plurality of predefined cancellation indication methods, wherein the uplink cancellation indication method is used to determine one or more of the plurality of uplink time-frequency resources to be cancelled.

16. The wireless communication method according to claim 15, wherein: Determining the uplink cancellation indication method from among the plurality of predefined cancellation indication methods is performed using one or more distinguishing bits.

17. The wireless communication method according to claim 15, wherein: Determining the uplink cancellation indication method from among the plurality of predefined cancellation indication methods is performed using a radio network temporary identifier (RNTI) different from that of the wireless terminal.

18. The wireless communication method according to claim 15, wherein: Determining the uplink cancellation indication method from among the plurality of predefined cancellation indication methods is performed using different search spaces.

19. A communication device comprising a processor configured to implement the method according to any one of claims 1 to 18.

20. A computer program product having stored thereon a code, wherein: When the code is executed by a processor, the processor is caused to implement the method according to any one of claims 1 to 18.

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