Timing information determining method, device, and computer-readable storage medium

Abstract

The present application provides a timing information determining method, a device, and a computer-readable storage medium. The method comprises: receiving first information by means of a first link / carrier, wherein the first information comprises a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first link / carrier is a link / carrier that maintains downlink timing information or supports downlink transmission, and the second link / carrier is a link / carrier that does not maintain downlink timing information or does not support downlink transmission; and determining uplink (UL) timing information of the second link / carrier on the basis of the first information. In the method, UL timing information of a link configured as UL only can be obtained.

Description

Timing information determination method, device and computer readable storage medium TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a timing information determination method, device and computer readable storage medium. BACKGROUND

[0002] In a carrier aggregation (CA), dual connectivity (DC) or multi-transmit / receive point (multi-TRP) scenario, in order to achieve coverage enhancement or throughput improvement, multiple base station side network elements, such as traditional macro base stations (Macro), micro stations (Micro), relays (Relay), BBUs, radio remote units (RRU) or TRPs, etc., can be deployed. The links between these base station side network elements and terminals can support both downlink transmission and uplink transmission, or some links can only support uplink transmission (UL only) in order to achieve energy saving or uplink throughput enhancement. Meanwhile, the links between the base station side network elements and the terminals can use the same or different carriers, and these base station side network elements can be deployed in a co-sited manner or in a non-co-sited manner.

[0003] For the links configured as UL only, the base station side network elements do not send any downlink signals or channels on these links, and only uplink transmission is performed on these links, i.e., the terminal only sends uplink signals or channels to the base station side network elements. Therefore, for these links configured as UL only, how to determine the timing information of the uplink transmission is a technical problem to be solved by those skilled in the art. SUMMARY

[0004] Embodiments of the present application provide a timing information determination method, device and computer readable storage medium.

[0005] In a first aspect, embodiments of the present application provide a timing information determination method applied to a first communication node, comprising:

[0006] receiving first information through a first link / carrier, wherein the first information comprises a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first link / carrier is a link / carrier with maintained downlink timing information or with downlink transmission, and the second link / carrier is a link / carrier without maintained downlink timing information or without downlink transmission;

[0007] determining uplink timing information of the second link / carrier according to the first information.

[0008] In a second aspect, an embodiment of the present application provides a timing information determination method, applied to a second communication node, comprising:

[0009] sending first information through a first link / carrier, wherein the first information comprises a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, and the first information is used to instruct the first communication node to determine uplink timing information of the second link / carrier, the first link / carrier is a link / carrier with maintained downlink timing information or with downlink transmission, and the second link / carrier is a link / carrier without maintained downlink timing information or without downlink transmission.

[0010] In a third aspect, an embodiment of the present application provides a communication node, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the timing information determination method provided in the first aspect or the second aspect.

[0011] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the timing information determination method provided in the first aspect or the second aspect.

[0012] The technical scheme provided by the embodiments of the present application realizes the purpose of obtaining uplink timing information of a link configured as UL only, by receiving first information through a first link / carrier, wherein the first information comprises a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, and determining uplink timing information of the second link / carrier according to the first information. BRIEF DESCRIPTION OF DRAWINGS

[0013] FIG. 1 is a structural schematic diagram of a communication system to which the timing information determination method provided by the embodiments of the present application is applied;

[0014] FIG. 2 is a flow schematic diagram of the timing information determination method provided by the embodiments of the present application;

[0015] FIG. 3 is a schematic diagram of an uplink signal sending mode provided by the embodiments of the present application;

[0016] FIG. 4 is another schematic diagram of the uplink signal sending mode provided by the embodiments of the present application;

[0017] FIG. 5 is still another schematic diagram of the uplink signal sending mode provided by the embodiments of the present application;

[0018] FIG. 6 is still another schematic diagram of the uplink signal sending mode provided by the embodiments of the present application;

[0019] FIG. 7 is a structural schematic diagram of a timing information determination apparatus according to an embodiment of the present application;

[0020] FIG. 8 is another structural schematic diagram of a timing information determination apparatus according to an embodiment of the present application;

[0021] FIG. 9 is a structural schematic diagram of a communication node according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0023] For an air interface link between a network side device and a terminal, a prerequisite for the terminal to send uplink transmission to the network side device through the link is that the terminal needs to maintain uplink timing information according to the transmission delay of the link and downlink timing information, so as to send uplink transmission according to the uplink timing information. For example, the terminal can determine the downlink timing information by receiving downlink transmission sent by the network side device, the terminal sends uplink transmission to the network side device through a random access process, the network side device can determine the transmission delay of the transmission link between the network side device and the terminal according to the uplink transmission sent by the terminal, so as to determine the uplink timing advance according to the transmission delay, and the network side device indicates the uplink timing advance to the terminal through random access response (RAR) signaling or timing advance command (TAC). After receiving the uplink timing advance indicated by the network side, the terminal sends uplink transmission to the network side device according to the uplink timing advance on the basis of the downlink timing information maintained by itself. For the initial uplink signal or channel sent by the terminal, at this time the terminal has not received the uplink timing advance indicated by the network side device, and the terminal will assume that the uplink timing advance is 0 to send the initial uplink signal or channel based on the downlink timing information. Alternatively, the network side device described above can be a traditional macro base station (Macro), micro station (Micro), relay (Relay), baseband processing unit (Baseband Unit, BBU), remote radio unit (Remote Radio Unit, RRU), or transmission reception point (Transmission Reception Point, TRP), etc., or can be a centralized unit (Centralized Unit, CU) or distributed unit (Distribute Unit, DU) that undertakes joint scheduling, and the embodiments of the present application do not limit this.

[0024] For carrier aggregation / dual-connectivity (CA / DC) or multi-TRP scenarios, in order to achieve coverage enhancement or throughput improvement, multiple network side devices can be deployed, the links between these network side devices and the terminal can use the same or different carriers, and these network side devices can be deployed in a co-sited manner or a non-co-sited manner. If different network side devices are deployed in a non-co-sited manner, the matched uplink timing advance of the multiple links between these network side devices and the terminal can be different, and the downlink timing information maintained by the terminal for the multiple links can also be different. The terminal needs to maintain the downlink timing information for each link according to the downlink signals or channels received from each link. After receiving the uplink timing advance of a certain link indicated by the network side device, the terminal can determine the specific uplink timing information of the uplink transmission on this link, i.e., the subframe / slot / symbol boundary of the uplink transmission, according to the downlink timing information of the link maintained by the terminal and the uplink timing advance of the link indicated by the network side device, so that the network side device can receive the uplink transmission sent by the terminal on the subframe / slot / symbol corresponding to the system timing in time.

[0025] In some cases, the links between each network side device and the terminal can support both downlink transmission and uplink transmission, and in order to achieve energy saving or uplink throughput enhancement, some links can only support uplink transmission (UL only). As shown in FIG. 1, the link between the terminal and the network side device 1 (such as TRP1 (transmission reception point 1)) supports both uplink transmission (Uplink, UL) and downlink transmission (Downlink, DL), and the link between the terminal and the network side device 2 (such as TRP2 (transmission reception point 2)) only supports uplink transmission (UL only) and does not support downlink transmission. It should be noted that FIG. 1 only illustrates 2 links, and there can be more links between the terminal and the network side device, and among these links, multiple links can be configured as UL only. The total number of links between the terminal and the network side device and the number of links configured as UL only are not limited by the embodiments of the present application.

[0026] For links configured as UL only, the network side device does not send any downlink signal or channel on these links, and there is only uplink transmission on these links, i.e., the terminal only sends uplink signals or channels to the network side device. Therefore, how to determine the timing information of the uplink transmission for these links configured as UL only is a technical problem to be solved. To this end, the technical solutions provided by the embodiments of the present application aim to solve the above technical problems.

[0027] FIG. 2 is a flow diagram of a method for determining timing information according to an embodiment of the present application. As shown in FIG. 2, the method can include the following steps:

[0028] S201. The second communication node sends first information through a first link / carrier.

[0029] The first information includes a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier. The first link / carrier is a link / carrier that maintains downlink timing information or has downlink transmission. The second link / carrier is a link / carrier that does not maintain downlink timing information or has no downlink transmission. The first link / carrier can also be understood as a link / carrier that supports both uplink transmission and downlink transmission. The second link / carrier can also be understood as a link / carrier that supports only uplink transmission and does not support downlink transmission.

[0030] S202. The first communication node receives the first information through the first link / carrier.

[0031] S203. The first communication node determines uplink timing information of the second link / carrier according to the first information.

[0032] Optionally, the timing offset includes a downlink timing offset and / or an uplink timing advance offset. Optionally, the downlink timing offset is 1*L, and the uplink timing advance offset is 2*L. L is an offset of transmission delay between the first link / carrier and the second link / carrier.

[0033] In the case where the first information includes the timing offset between the first link / carrier and the second link / carrier, S203 can include at least one of the following:

[0034] The first communication node determines the uplink timing information of the second link / carrier according to the timing offset between the first link / carrier and the second link / carrier and uplink timing information of the first link / carrier.

[0035] The first communication node determines the uplink timing information of the second link / carrier according to the timing offset between the first link / carrier and the second link / carrier and downlink timing information of the first link / carrier.

[0036] For example, the downlink timing information of the second link / carrier is determined based on the downlink timing offset between the first link / carrier and the second link / carrier and the downlink timing information of the first link / carrier, the uplink timing advance information of the second link / carrier is determined based on the uplink timing offset between the first link / carrier and the second link / carrier and the uplink timing advance information of the first link / carrier, and thus the uplink timing information of the second link / carrier for uplink transmission can be determined according to the downlink timing information of the second link / carrier and the uplink timing advance information of the second link / carrier.

[0037] Optionally, the timing information of the second link / carrier includes the downlink timing information of the second link / carrier and / or the uplink timing information of the second link / carrier, and the uplink timing information of the second link / carrier at least includes the uplink timing advance information of the second link / carrier. Correspondingly, S203 can be that the first communication node determines the uplink timing information of the second link / carrier according to the downlink timing information of the second link / carrier and / or the uplink timing advance information of the second link / carrier. That is, the first communication node sends uplink transmission on the second link / carrier based on the downlink timing information of the second link / carrier and the uplink timing advance information of the second link / carrier as a time offset.

[0038] Optionally, the second communication node can determine the timing offset between the first link / carrier and the second link / carrier by at least one of the following manners:

[0039] Manner 1: The second communication node compares the transmission delay offset between the first link / carrier and the second link / carrier according to the site network element positions of the multiple links / carriers / TRPs and the terminal position, and determines the timing offset between the first link / carrier and the second link / carrier according to the transmission delay offset.

[0040] In this case, the second communication node can determine that the downlink timing offset between the first link / carrier and the second link / carrier is equal to the transmission delay offset between the two types of links / carriers, and determine that the uplink timing advance offset between the first link / carrier and the second link / carrier is equal to twice the transmission delay offset between the two types of links / carriers.

[0041] Optionally, the timing offset between the two types of links / carriers can be carried by extending the existing TAC. Specifically, in the TAC media access control-control element (MAC CE) of the first link / carrier, in addition to indicating N TA , an additional time offset is supported. In this case, N TAThe time offset is used to indicate the downlink timing offset or uplink timing advance offset between the first link / carrier and the second link / carrier. That is, when the second communication node indicates the uplink timing advance information of the first link / carrier to the first communication node, it also indicates the downlink timing offset or uplink timing advance offset between the first link / carrier and the second link / carrier, so that the first communication node can determine the uplink timing information of the second link / carrier based on the N TA The second communication node determines the downlink timing information and uplink timing advance information of the second link / carrier based on the time offset, determines the uplink timing information of the second link / carrier based on the downlink timing information and uplink timing advance information of the second link / carrier, and transmits the uplink transmission on the second link / carrier according to the uplink timing information.

[0042] Option 2: The second communication node configures the first communication node with an uplink signal, which includes an uplink reference signal or an uplink channel. The first communication node transmits the uplink signal on the second link / carrier, and the second communication node receives the uplink signal on the second link / carrier and determines the timing offset between the first link / carrier and the second link / carrier or the timing information of the second link / carrier based on the received uplink signal.

[0043] Option 2: The second communication node configures the first communication node with an uplink signal, which includes an uplink reference signal or an uplink channel. The first communication node transmits the uplink signal on the second link / carrier, and the second communication node receives the uplink signal on the second link / carrier and determines the timing offset between the first link / carrier and the second link / carrier or the timing information of the second link / carrier based on the received uplink signal.

[0044] Optionally, the first information can be carried in a downlink channel or a downlink message, such as a Physical Downlink Control Channel (PDCCH) or a Physical Downink Shared Channel (PDSCH) or a Random Access Response (RAR). The PDCCH can be an UL grant (uplink grant) that schedules the uplink transmission on the second link / carrier.

[0045] Optionally, the uplink reference signal can be a sounding reference signal (SRS), a demodulation reference signal (DMRS), or other reference signals, and the uplink channel can be a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), or other uplink channels.

[0046] Optionally, before obtaining any downlink or uplink timing information of the second link / carrier, the first communication node can send the uplink signal on the second link / carrier by at least one of the following ways:

[0047] Way 1: According to the downlink timing information of the first link / carrier and the uplink timing advance information of the first link / carrier, the uplink signal is sent on the second link / carrier.

[0048] The second communication node configures the first communication node to send the uplink reference signal on the second link / carrier through the first link / carrier, and the first communication node can use the downlink timing information of the first link / carrier as the downlink timing information of the second link / carrier, and use the uplink timing advance information of the first link / carrier as the uplink timing advance information of the second link / carrier to send the uplink reference signal on the second link / carrier.

[0049] The second communication node configures or schedules the first communication node to send the uplink channel on the second link / carrier through the first link / carrier, and the first communication node can use the downlink timing information of the first link / carrier as the downlink timing information of the second link / carrier, and use the uplink timing advance information of the first link / carrier as the uplink timing advance information of the second link / carrier to send the uplink channel on the second link / carrier.

[0050] Way 2: According to the downlink timing information of the first link / carrier and preset uplink timing advance information, the uplink signal is sent on the second link / carrier.

[0051] Optionally, the preset uplink timing advance information can be 0 or other numerical values, which is not limited in the embodiment.

[0052] The second communication node configures the first communication node to send uplink reference signals on the second link / carrier through the first link / carrier. The first communication node sends the uplink reference signals on the second link / carrier with the downlink timing information of the first link / carrier as the downlink timing information of the second link / carrier, and with the uplink timing advance information being a preset value (such as 0).

[0053] The second communication node configures or schedules the first communication node to send uplink channels on the second link / carrier through the first link / carrier. The first communication node sends the uplink channels on the second link / carrier with the downlink timing information of the first link / carrier as the downlink timing information of the second link / carrier, and with the uplink timing advance information being a preset value (such as 0).

[0054] Optionally, the second communication node configures the first communication node with one or more sets of uplink signal resources, which specifically include at least one of the following configuration information: uplink signal time domain resource, uplink signal frequency domain resource, uplink signal sequence information, uplink signal beam information, uplink signal transmission power information, and uplink signal repetition information for indicating whether to send the uplink signal repeatedly with different beams. When multiple sets of uplink signal resources are configured, the multiple sets of uplink signal resources can be included in one uplink signal resource set. It can be understood that, in the case where the uplink signal configured by the second communication node for the first communication node is an uplink reference signal, the above-mentioned uplink signal resource is an uplink reference signal resource, and in the case where the uplink signal configured by the second communication node for the first communication node is an uplink channel, the above-mentioned uplink signal resource is an uplink channel resource.

[0055] The first communication node sends a specific sequence of uplink signals on specific time domain resources, frequency domain resources, with specific power and specific beams according to the configuration information of the second communication node. Optionally, the first communication node can send the uplink signals on the second link / carrier in at least one of the following ways:

[0056] Method 1: sending the same or different uplink signals on multiple sets of uplink signal resources in one configured uplink signal resource set with the same beam.

[0057] As shown in FIG. 3, taking periodic sending of uplink signals as an example, resource set 0 is an uplink signal resource set, which contains multiple sets of uplink signal resources resource 0 (uplink signal resource 0), resource 1 (uplink signal resource 1), resource 2 (uplink signal resource 2), and resource 3 (uplink signal resource 3), each set of uplink signal resources corresponding to the same beam, i.e., the first communication node sends the same or different uplink signals on the resource 0, resource 1, resource 2, and resource 3 configured by the second communication node with the same beam. Wherein, the uplink signal can be an uplink reference signal or an uplink channel, in the case that the second communication node configures the first communication node with an uplink reference signal, the first communication node sends the same or different uplink reference signals on multiple sets of uplink reference signal resources in the configured uplink reference signal resource set with the same beam. In the case that the second communication node configures the first communication node with an uplink channel, the first communication node sends the same or different uplink channels on multiple sets of uplink channel resources in the configured uplink channel resource set with the same beam.

[0058] It should be noted that the above examples are only taken as an example of periodic uplink signal sending, and non-periodic uplink signals or semi-persistent uplink signals can also be sent on the above uplink signal resources, which is related to the configuration of the second communication node to the first communication node.

[0059] Mode 2: sending the same or different uplink signals on multiple sets of uplink signal resources in the configured uplink signal resource set with different beams.

[0060] As shown in FIG. 4, the resource set 0 is an uplink signal resource set, which contains multiple sets of uplink signal resources resource 0, resource 1, resource 2 and resource 3. The resource 0 corresponds to beam 0 (beam#0), the resource 1 corresponds to beam 1 (beam#1), the resource 2 corresponds to beam 2 (beam#2), and the resource 3 corresponds to beam 3 (beam#3). The directions of the beams are different, i.e., the first communication node transmits the same or different uplink signals with different beams on the resource 0, the resource 1, the resource 2 and the resource 3 configured by the second communication node. The uplink signal can be an uplink reference signal or an uplink channel. In the case that the second communication node configures the first communication node with the uplink reference signal, the first communication node transmits the same or different uplink reference signals with different beams on multiple sets of uplink reference signal resources in the configured uplink reference signal resource set. In the case that the second communication node configures the first communication node with the uplink channel, the first communication node transmits the same or different uplink channels with different beams on multiple sets of uplink channel resources in the configured uplink channel resource set.

[0061] Mode 3: Transmit the same or different uplink signals with the same beam on multiple continuous transmission occasions of a set of uplink signal resources.

[0062] As shown in FIG. 5, the multiple continuous transmission occasions of the uplink signal resource resource 0 correspond to the same beam respectively, and the first communication node transmits the same or different uplink signals with the same beam on the multiple continuous transmission occasions of the uplink signal resource resource 0 configured by the second communication node. The uplink signal can be an uplink reference signal or an uplink channel. In the case that the second communication node configures the first communication node with the uplink reference signal, the first communication node transmits the same or different uplink reference signals with the same beam on multiple continuous transmission occasions of a set of uplink reference signal resources. In the case that the second communication node configures the first communication node with the uplink channel, the first communication node transmits the same or different uplink channels with the same beam on multiple continuous transmission occasions of a set of uplink channel resources.

[0063] Mode 4: Transmit the same or different uplink signals with different beams on multiple continuous transmission occasions of a set of uplink signal resources.

[0064] As shown in FIG. 6, the multiple continuous transmission occasions of the uplink signal resource resource 0 correspond to different beams (such as beam 0, beam 1, beam 2, and beam 3, etc.), and the first communication node can transmit the same or different uplink signals in different beams on the multiple continuous transmission occasions of the uplink signal resource resource 0 configured by the second communication node. The uplink signal can be an uplink reference signal or an uplink channel. In the case where the second communication node configures the first communication node with an uplink reference signal, the first communication node transmits the same or different uplink reference signals in different beams on the multiple continuous transmission occasions of a set of uplink reference signal resources configured by the second communication node. In the case where the second communication node configures the first communication node with an uplink channel, the first communication node transmits the same or different uplink channels in different beams on the multiple continuous transmission occasions of a set of uplink channel resources configured by the second communication node.

[0065] Optionally, the above-mentioned uplink signal beam information can be determined by at least one of the following manners:

[0066] The first communication node can transmit the uplink signal in a wide beam direction by an omnidirectional antenna.

[0067] The first communication node transmits the uplink signal in the beam direction of a QCL source reference signal having a quasi co-located (QCL) relationship with the uplink signal.

[0068] Optionally, the above-mentioned QCL source reference signal is predefined or configured by the second communication node.

[0069] In an optional implementation, the second communication node configures the first communication node with a QCL source reference signal corresponding to the uplink signal resource, which can be configured by a transmission configuration indicator state (TCI state) of Type-D. Accordingly, the first communication node can transmit the uplink reference signal or the uplink channel in the beam direction of the QCL source reference signal. Optionally, the QCL source reference signal can be a downlink reference signal or a downlink channel received by the first communication node through the first link / carrier, such as a synchronization signal / physical broadcast channel block (SSB), a channel state information reference signal (CSI-RS), a DMRS, a PDSCH, or a PDCCH, etc. Optionally, the QCL source reference signal can also be an uplink reference signal or an uplink channel transmitted by the first communication node through the first link / carrier, such as an SRS, a PRACH, a DMRS, a PUSCH, or a PUCCH, etc.

[0070] In an optional implementation, the system pre-defines a QCL source reference signal of the uplink signal resource, according to which the first communication node adopts the beam direction of the QCL source reference signal to transmit the uplink reference signal or the uplink channel. Optionally, the QCL source reference signal can be a downlink reference signal or a downlink channel received by the first communication node through the first link / carrier, such as SSB, CSI-RS, DMRS, PDSCH or PDCCH, etc. Optionally, the QCL source reference signal can also be an uplink reference signal or an uplink channel transmitted by the first communication node through the first link / carrier, such as SRS, PRACH, DMRS, PUSCH or PUCCH, etc.

[0071] With the movement of the first communication node, the downlink timing information of the second link / carrier received by the first communication node or the uplink timing advance information or the uplink timing information of the uplink transmission transmitted on the second link / carrier can change, but the second communication node can not track or track in time the movement of the first communication node. Therefore, in order to avoid the waste of resources and power caused by the frequent transmission of the uplink reference signal or the uplink channel for the second communication node to obtain the timing information or the transmission delay information of the link by the first communication node on the second link / carrier, a corresponding triggering mechanism can be introduced.

[0072] To this end, when the first communication node detects that it has a significant location movement, for example, the moving distance is greater than a preset threshold, the first communication node can transmit first indication information through the first link / carrier or the second link / carrier, and the first indication information is used to indicate at least one of the following:

[0073] Request the second communication node to enable / activate the timing information update operation;

[0074] Request the second communication node to disable / deactivate the timing information update operation;

[0075] Wherein, the timing information update operation is used to update the uplink timing information of the second link / carrier, such as updating the downlink timing information, the uplink timing advance information or the uplink timing information of the second link / carrier.

[0076] Optionally, the first indication information can be carried in the uplink reference signal or the uplink channel, such as PUCCH, PUSCH or SRS.

[0077] Optionally, the first indication information can be carried by the uplink control information (Uplink Control Information, UCI), MAC CE or SRS.

[0078] Optionally, the first indication information can be carried by at least one of the following:

[0079] Manner 1: define a new UCI type, and send through PUCCH, the new UCI type is used to carry the first indication information.

[0080] Manner 2: define a first bitmap field in the existing UCI, the first bitmap field is used to carry the first indication information, each bit in the first bitmap field corresponds to a different second link / carrier.

[0081] Wherein, in the case that the bit in the first bitmap field is a first preset value, it is used to indicate to enable / activate the timing update operation on the second link / carrier corresponding to the bit, in the case that the bit in the first bitmap field is a second preset value, it is used to indicate to disable / deactivate the timing update operation on the second link / carrier corresponding to the bit.

[0082] Manner 3: define a new MAC CE type, and send through PUSCH, the new MAC CE type is used to carry the first indication information.

[0083] Manner 4: define a second bitmap field in the existing MAC CE, the second bitmap field is used to carry the first indication information, each bit in the second bitmap field corresponds to a different second link / carrier.

[0084] Wherein, in the case that the bit in the second bitmap field is a first preset value, it is used to indicate to enable / activate the timing update operation on the second link / carrier corresponding to the bit, in the case that the bit in the second bitmap field is a second preset value, it is used to indicate to disable / deactivate the timing update operation on the second link / carrier corresponding to the bit.

[0085] Manner 5: use SRS of a specific sequence to represent the first indication information.

[0086] Manner 6: use SRS sent on a specific time domain resource to represent the first indication information, the specific time domain resource is configured by the second communication node.

[0087] Manner 7: use SRS sent on a specific frequency domain resource to represent the first indication information, the specific frequency domain resource is configured by the second communication node.

[0088] The first communication node uses SRS of a specific sequence, or uses SRS sent on a specific time domain resource, or uses SRS sent on a specific frequency domain resource to request the second communication node to enable / activate the timing information update operation on the second link / carrier, or to request the second communication node to disable / deactivate the timing information update operation on the second link / carrier.

[0089] The second communication node receives, through the first link / carrier or the second link / carrier, first indication information, the first indication information being used to indicate at least one of the following:

[0090] The second communication node is requested to enable / activate a timing information updating operation;

[0091] The second communication node is requested to disable / deactivate a timing information updating operation;

[0092] The timing information updating operation is used to update timing information of the second link / carrier for uplink transmission.

[0093] After the second communication node receives the first indication information, the second communication node can respond or not respond to the request of the first communication node. If the second communication node responds to the request of the first communication node, the second communication node can respond in at least one of the following manners:

[0094] Manner 1: configure periodic uplink reference signals or uplink channels for the first communication node.

[0095] Specifically, the second communication node can configure periodic SRS or periodic PRACH for the first communication node. Optionally, the second communication node can configure periodic uplink reference signals or uplink channels for the first communication node through RRC signaling.

[0096] Manner 2: instruct the first communication node to disable the configured periodic uplink reference signals or uplink channels.

[0097] Specifically, the second communication node can configure periodic SRS or periodic PRACH for the first communication node. Optionally, the second communication node can instruct the first communication node to disable the previously configured periodic uplink reference signals or uplink channels through RRC signaling.

[0098] Manner 3: activate semi-persistent uplink reference signals or uplink channels configured for the first communication node.

[0099] Specifically, the second communication node can configure semi-persistent SRS or semi-persistent PRACH for the first communication node. Optionally, the second communication node can instruct the first communication node to activate the previously configured semi-persistent uplink reference signals or uplink channels through MAC CE.

[0100] Manner 4: disable semi-persistent uplink reference signals or uplink channels configured for the first communication node.

[0101] Specifically, the second communication node can configure the first communication node with a semi-persistent SRS or a semi-persistent PRACH. Alternatively, the second communication node can instruct the first communication node to deactivate a previously configured semi-persistent uplink reference signal or uplink channel through a MAC CE.

[0102] Option 5: Triggering the first communication node to send an aperiodic uplink reference signal or uplink channel.

[0103] Specifically, it can be an aperiodic SRS or a semi-persistent PRACH. Alternatively, the second communication node can trigger the first communication node to send an aperiodic uplink reference signal or uplink channel through a MAC CE or DCI signaling.

[0104] In the above manner, the first communication node can explicitly or implicitly indicate to the second communication node the need for timing update of the second link / carrier, so as to ensure that the system does not waste excessive resources to blindly send and receive signals / channels for obtaining the timing information of the second link / carrier, thereby achieving the purpose of saving resources.

[0105] FIG. 7 is a structural schematic diagram of a timing information determination apparatus provided by an embodiment of the present application, which is integrated in a first communication node. As shown in FIG. 7, the apparatus can include a receiving module 701 and a determination module 702.

[0106] Specifically, the receiving module 701 is configured to receive first information through a first link / carrier, the first information including a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first link / carrier being a link / carrier with maintained downlink timing information or with downlink transmission, and the second link / carrier being a link / carrier without maintained downlink timing information or without downlink transmission.

[0107] The determination module 702 is configured to determine uplink timing information of the second link / carrier according to the first information.

[0108] Optionally, the timing offset includes a downlink timing offset and / or an uplink timing advance offset.

[0109] Optionally, the downlink timing offset is 1*L, and the uplink timing advance offset is 2*L, L being a transmission delay offset between the first link / carrier and the second link / carrier.

[0110] On the basis of the above embodiment, the determination module 702 is specifically configured to perform at least one of the following according to the first information:

[0111] determine the uplink timing information of the second link / carrier according to the timing offset and uplink timing information of the first link / carrier;

[0112] According to the timing offset and downlink timing information of the first link / carrier, uplink timing information of the second link / carrier is determined.

[0113] Optionally, the timing information of the second link / carrier includes downlink timing information of the second link / carrier and / or uplink timing information of the second link / carrier, and the uplink timing information of the second link / carrier at least includes uplink timing advance information of the second link / carrier.

[0114] On the basis of the above-mentioned embodiments, optionally, the method further comprises: a sending module.

[0115] Specifically, the sending module is configured to send an uplink signal through the second link / carrier, the uplink signal being used for the second communication node to determine the timing offset or the timing information of the second link / carrier, and the uplink signal including an uplink reference signal or an uplink channel.

[0116] On the basis of the above-mentioned embodiments, optionally, the sending module is specifically configured to perform at least one of the following:

[0117] sending the uplink signal on the second link / carrier according to the downlink timing information of the first link / carrier and uplink timing advance information of the first link / carrier;

[0118] sending the uplink signal on the second link / carrier according to the downlink timing information of the first link / carrier and preset uplink timing advance information.

[0119] On the basis of the above-mentioned embodiments, optionally, the sending module is specifically configured to perform at least one of the following:

[0120] sending the same or different uplink signals on multiple sets of uplink signal resources in one configured uplink signal resource set through the same beam;

[0121] sending the same or different uplink signals on multiple sets of uplink signal resources in one configured uplink signal resource set through different beams;

[0122] sending the same or different uplink signals on multiple continuous transmission occasions of one configured set of uplink signal resources through the same beam;

[0123] sending the same or different uplink signals on multiple continuous transmission occasions of one configured set of uplink signal resources through different beams.

[0124] Optionally, the uplink signal resource includes at least one of the following:

[0125] The uplink signal time domain resource, the uplink signal frequency domain resource, the uplink signal sequence information, the uplink signal beam information, the uplink signal transmission power information, and the uplink signal repetition information, wherein the uplink signal repetition information is used to indicate whether the uplink signal is repeatedly transmitted in different beams, and the uplink signal resource is configured to the first communication node by the second communication node.

[0126] On the basis of the above-mentioned embodiments, optionally, the uplink signal beam information is determined by at least one of the following manners:

[0127] transmitting the uplink signal in a wide beam direction by using an omnidirectional antenna;

[0128] transmitting the uplink signal in a beam direction of a QCL source reference signal having a QCL relationship with the uplink signal.

[0129] Optionally, the QCL source reference signal is predefined or configured by the second communication node.

[0130] Optionally, the QCL source reference signal includes a downlink reference signal or a downlink channel received through the first link / carrier, or an uplink reference signal or an uplink channel transmitted through the first link / carrier.

[0131] On the basis of the above-mentioned embodiments, optionally, the sending module is further used to send the first indication information through the first link / carrier or the second link / carrier.

[0132] The first indication information is used to indicate at least one of the following:

[0133] requesting the second communication node to enable / activate the timing information updating operation;

[0134] requesting the second communication node to disable / deactivate the timing information updating operation;

[0135] The timing information updating operation is used to update the uplink timing information of the second link / carrier.

[0136] Optionally, the first indication information is carried by UCI, MAC CE, or SRS.

[0137] Optionally, the first indication information is carried by at least one of the following manners:

[0138] defining a new UCI type, and transmitting the new UCI type through a PUCCH, wherein the new UCI type is used to carry the first indication information;

[0139] defining a first bitmap field in the existing UCI, wherein the first bitmap field is used to carry the first indication information, and each bit in the first bitmap field corresponds to a different second link / carrier;

[0140] A new MAC CE type is defined and transmitted through a PUSCH, and the new MAC CE type is used to carry the first indication information.

[0141] A second bitmap field is defined in an existing MAC CE, and the second bitmap field is used to carry the first indication information, and each bit in the second bitmap field corresponds to a different second link / carrier.

[0142] The first indication information is indicated by an SRS of a specific sequence.

[0143] The first indication information is indicated by an SRS transmitted on a specific time domain resource, and the specific time domain resource is configured by the second communication node.

[0144] The first indication information is indicated by an SRS transmitted on a specific frequency domain resource, and the specific frequency domain resource is configured by the second communication node.

[0145] FIG. 8 is another structural schematic diagram of a timing information determination apparatus provided by an embodiment of the present application. The apparatus is integrated in a second communication node, as shown in FIG. 8, and the apparatus can include a sending module 801.

[0146] Specifically, the sending module 801 is configured to send first information through a first link / carrier, the first information including a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, and the first information being used to instruct a first communication node to determine uplink timing information of the second link / carrier, the first link / carrier being a link / carrier on which downlink timing information is maintained or on which downlink transmission is performed, and the second link / carrier being a link / carrier on which downlink timing information is not maintained or on which downlink transmission is not performed.

[0147] Optionally, the timing offset includes a downlink timing offset and / or an uplink timing advance offset.

[0148] Optionally, the downlink timing offset is 1*L, and the uplink timing advance offset is 2*L, L being a transmission delay offset between the first link / carrier and the second link / carrier.

[0149] Optionally, the timing information of the second link / carrier includes downlink timing information of the second link / carrier and / or uplink timing information of the second link / carrier, and the uplink timing information of the second link / carrier at least includes uplink timing advance information of the second link / carrier.

[0150] On the basis of the above-mentioned embodiments, the apparatus can further include a receiving module.

[0151] Specifically, the receiving module is configured to receive an uplink signal through the second link / carrier, and determine the timing offset between the first link / carrier and the second link / carrier or the timing information of the second link / carrier according to the uplink signal, the uplink signal including an uplink reference signal or an uplink channel.

[0152] Optionally, the receiving module is further configured to receive the first indication information through the first link / carrier or the second link / carrier.

[0153] The first indication information is used to indicate at least one of the following:

[0154] The first indication information is used to request the second communication node to enable / activate the timing information updating operation.

[0155] The first indication information is used to request the second communication node to disable / deactivate the timing information updating operation.

[0156] The timing information updating operation is used to update the timing information of the second link / carrier for uplink transmission.

[0157] Optionally, the first indication information is carried by at least one of the following manners:

[0158] A new UCI type is defined and transmitted through a PUCCH, the new UCI type being used to carry the first indication information.

[0159] A first bitmap field is defined in an existing UCI, the first bitmap field being used to carry the first indication information, each bit in the first bitmap field corresponding to a different second link / carrier.

[0160] A new MAC CE type is defined and transmitted through a PUSCH, the new MAC CE type being used to carry the first indication information.

[0161] A second bitmap field is defined in an existing MAC CE, the second bitmap field being used to carry the first indication information, each bit in the second bitmap field corresponding to a different second link / carrier.

[0162] The first indication information is represented by an SRS of a specific sequence.

[0163] The first indication information is represented by an SRS transmitted on a specific time domain resource, the specific time domain resource being configured by the second communication node.

[0164] The first indication information is represented by an SRS transmitted on a specific frequency domain resource, the specific frequency domain resource being configured by the second communication node.

[0165] On the basis of the above-mentioned embodiments, optionally, the sending module 801 is further configured to respond to the request of the first communication node by at least one of the following manners:

[0166] configuring a periodic uplink reference signal or uplink channel for the first communication node;

[0167] indicating the first communication node to configure the configured periodic uplink reference signal or uplink channel;

[0168] activating a semi-persistent uplink reference signal or uplink channel configured for the first communication node;

[0169] deactivating the semi-persistent uplink reference signal or uplink channel configured for the first communication node;

[0170] triggering the first communication node to send an aperiodic uplink reference signal or uplink channel.

[0171] In one embodiment, a communication node, for example, the first communication node or the second communication node in the above-mentioned embodiments, is also provided. The internal structure diagram of the above-mentioned communication node can be shown in FIG. 9. The communication node includes a processor, a memory, a network interface and a database connected through a system bus. The processor of the communication node is configured to provide computing and control capabilities. The memory of the communication node includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium. The database of the communication node is configured to store data generated in the timing information determination process. The network interface of the communication node is configured to communicate with external devices through a network connection. The computer program is executed by the processor to implement a timing information determination method.

[0172] Those skilled in the art can understand that the structure shown in FIG. 9 is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the communication node to which the scheme of the present application is applied. The specific communication node can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0173] The embodiments of the present application also provide a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the following steps:

[0174] receiving first information via a first link / carrier, the first information comprising timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first link / carrier being a link / carrier maintaining downlink timing information or having downlink transmission, the second link / carrier being a link / carrier not maintaining downlink timing information or not having downlink transmission;

[0175] determining uplink timing information of the second link / carrier according to the first information.

[0176] Or, the computer program is executed by the processor to implement the following steps:

[0177] sending first information via a first link / carrier, the first information comprising timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first information being used to instruct a first communication node to determine uplink timing information of the second link / carrier, the first link / carrier being a link / carrier maintaining downlink timing information or having downlink transmission, the second link / carrier being a link / carrier not maintaining downlink timing information or not having downlink transmission.

[0178] The computer storage medium of the embodiments of the present application can adopt any combination of one or more computer readable media. The computer readable medium can be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. The computer readable storage medium includes (but is not limited to) an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an electrically erasable, programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus.

[0179] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, the data signals carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0180] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, radio frequency (RF), or any suitable combination thereof.

[0181] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination of programming languages, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, and Go) and conventional procedural programming languages ​​(such as the "C" language or similar programming languages). The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network (including a Local Area Network (LAN) or a Wide Area Network (WAN)), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0182] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0183] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0184] Embodiments of the application can be implemented by computer program instructions on a mobile device's data processor, for example in processor circuitry, or by hardware, or by a combination of software and hardware. Computer program instructions can be in assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0185] Any block diagrams of logical flows of the application can represent program steps, or logical operations, or a combination of program steps and logical operations. The computer program can be stored in a memory. The memory can be of any type suitable to the local technical environment and can be implemented using any suitable data storage technology, such as optical memory devices, magnetic memory devices, or solid state memory devices, in any combination. The computer readable media can include non-transitory computer readable media. The data processor can be of any type suitable to the local technical environment, and can include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), and processors of multi-core processor architectures, as suitable to the local technical environment. The embodiments of using the application described herein can be implemented in hardware that can include a processor, such as a general purpose processor, a special purpose processor, a conventional processor, a digital signal processor (DSP), a plurality of microprocessors, one or more microprocessors in arrangements such as a system-on-chip (SoC), and / or other examples, as well as any other processor(s).

Claims

1. A method for determining timing information, applied to a first communication node, comprising: receiving first information through a first link / carrier, wherein the first information comprises a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first link / carrier is a link / carrier with maintained downlink timing information or with downlink transmission, and the second link / carrier is a link / carrier without maintained downlink timing information or without downlink transmission; and determining uplink timing information of the second link / carrier according to the first information. The timing offset comprises a downlink timing offset and / or an uplink timing advance offset. The downlink timing offset is 1*L, and the uplink timing advance offset is 2*L, wherein L is an offset of transmission delay between the first link / carrier and the second link / carrier.

2. The method of claim 1, wherein, The determining of the uplink timing information of the second link / carrier according to the first information comprises at least one of the following:

3. The method of claim 2, wherein, determining the uplink timing information of the second link / carrier according to the timing offset and the uplink timing information of the first link / carrier; and determining the uplink timing information of the second link / carrier according to the timing offset and the downlink timing information of the first link / carrier.

4. The method of claim 1, wherein, The timing information of the second link / carrier comprises downlink timing information of the second link / carrier and / or uplink timing information of the second link / carrier, and the uplink timing information of the second link / carrier comprises at least uplink timing advance information of the second link / carrier. 6.The method of claim 1, further comprising: transmitting an uplink signal through a second link / carrier, wherein the uplink signal is used by a second communication node to determine the timing offset or the timing information of the second link / carrier, and the uplink signal comprises an uplink reference signal or an uplink channel. The transmitting of the uplink signal through the second link / carrier comprises at least one of the following:

5. The method of claim 1, wherein, transmitting the uplink signal on the second link / carrier according to the downlink timing information of the first link / carrier and uplink timing advance information of the first link / carrier; and transmitting the uplink signal on the second link / carrier according to the downlink timing information of the first link / carrier and preset uplink timing advance information. The transmitting of the uplink signal through the second link / carrier comprises at least one of the following: transmitting the same or different uplink signals on multiple sets of uplink signal resources in a configured uplink signal resource set with the same beam; transmitting the same or different uplink signals on multiple sets of uplink signal resources in the configured uplink signal resource set with different beams; transmitting the same or different uplink signals on multiple continuous transmission occasions of a configured set of uplink signal resources with the same beam; and transmitting the same or different uplink signals on multiple continuous transmission occasions of the configured set of uplink signal resources with different beams.

7. The method of claim 6, wherein, The uplink signal resource comprises at least one of the following: ​ ​ 8. The method of claim 6, wherein, ​ ​ ​ ​ ​ 9. The method of claim 8, wherein, ​ an uplink signal time domain resource, an uplink signal frequency domain resource, uplink signal sequence information, uplink signal beam information, uplink signal transmission power information, and uplink signal repetition information, the uplink signal repetition information being used to indicate whether the uplink signal is repeatedly transmitted in different beams, the uplink signal resource being configured by the second communication node to the first communication node.

10. The method of claim 9, wherein, The uplink signal beam information is determined by at least one of the following manners: The uplink signal is transmitted in a wide beam direction by using an omnidirectional antenna. The uplink signal is transmitted in a beam direction by using a QCL source reference signal having a quasi co-location (QCL) relationship with the uplink signal.

11. The method of claim 10, wherein, The QCL source reference signal is predefined or configured by the second communication node.

12. The method of claim 10, wherein, The QCL source reference signal includes a downlink reference signal or a downlink channel received through a first link / carrier, or an uplink reference signal or an uplink channel transmitted through the first link / carrier.

13. The method of claim 1, further comprising: transmitting first indication information through the first link / carrier or the second link / carrier; wherein the first indication information is used to indicate at least one of the following: requesting the second communication node to enable / activate a timing information updating operation; requesting the second communication node to disable / deactivate the timing information updating operation; the timing information updating operation is used to update uplink timing information of the second link / carrier.

14. The method of claim 13, wherein, The first indication information is carried by uplink control information (UCI), a medium access control-control element (MAC CE), or a channel sounding reference signal (SRS).

15. The method of claim 14, wherein, The first indication information is carried by at least one of the following manners: defining a new UCI type for carrying the first indication information, and transmitting the new UCI type through a physical uplink control channel (PUCCH); defining a first bitmap field in an existing UCI for carrying the first indication information, each bit in the first bitmap field corresponding to a different second link / carrier; defining a new MAC CE type for carrying the first indication information, and transmitting the new MAC CE type through a physical uplink shared channel (PUSCH); defining a second bitmap field in an existing MAC CE for carrying the first indication information, each bit in the second bitmap field corresponding to a different second link / carrier; representing the first indication information by a specific sequence of SRS; representing the first indication information by SRS transmitted on a specific time domain resource configured by the second communication node; representing the first indication information by SRS transmitted on a specific frequency domain resource configured by the second communication node.

16. A timing information determination method, applied to a second communication node, comprising: transmitting, over a first link / carrier, first information including a timing offset between the first link / carrier and a second link / carrier or timing information of the second link / carrier, the first information being used to indicate the first communication node to determine uplink timing information of the second link / carrier, the first link / carrier being a link / carrier with which downlink timing information is maintained or downlink transmission is maintained, and the second link / carrier being a link / carrier with which downlink timing information is not maintained or downlink transmission is not maintained.

17. The method of claim 16, wherein, The timing offset includes a downlink timing offset and / or an uplink timing advance offset.

18. The method of claim 17, wherein, The downlink timing offset is 1*L, and the uplink timing advance offset is 2*L, where L is an offset of a transmission delay between the first link / carrier and the second link / carrier.

19. The method of claim 16, wherein, The timing information of the second link / carrier includes downlink timing information of the second link / carrier and / or uplink timing information of the second link / carrier, and the uplink timing information of the second link / carrier includes at least uplink timing advance information of the second link / carrier.

20. The method of claim 16, further comprising: receiving, over a second link / carrier, an uplink signal, and determining the timing offset or the timing information of the second link / carrier according to the uplink signal, the uplink signal including an uplink reference signal or an uplink channel.

21. The method of claim 16, further comprising: receiving, over the first link / carrier or the second link / carrier, first indication information; wherein the first indication information is used to indicate at least one of the following: requesting a second communication node to enable / activate a timing information updating operation; requesting the second communication node to disable / deactivate the timing information updating operation; the timing information updating operation being used to update timing information of the second link / carrier for uplink transmission.

22. The method of claim 21, wherein, The first indication information is carried in at least one of the following ways: defining a new uplink control information (UCI) type and transmitting the first indication information over a physical uplink control channel (PUCCH), the new UCI type being used to carry the first indication information; defining a first bitmap field in an existing UCI, the first bitmap field being used to carry the first indication information, each bit in the first bitmap field corresponding to a different second link / carrier; defining a new medium access control-control element (MAC CE) type and transmitting the first indication information over a physical uplink shared channel (PUSCH), the new MAC CE type being used to carry the first indication information; defining a second bitmap field in an existing MAC CE, the second bitmap field being used to carry the first indication information, each bit in the second bitmap field corresponding to a different second link / carrier; representing the first indication information by a channel sounding reference signal (SRS) of a specific sequence; representing the first indication information by an SRS transmitted on a specific time domain resource, the specific time domain resource being configured by a second communication node; The first indication information is indicated by SRS transmitted on specific frequency domain resources, the specific frequency domain resources being configured by the second communication node.

23. The method of claim 21, further comprising: responding to the request of the first communication node by at least one of: configuring periodic uplink reference signals or uplink channels for the first communication node; indicating the first communication node to de-configure configured periodic uplink reference signals or uplink channels; activating semi-persistent uplink reference signals or uplink channels configured for the first communication node; de-activating semi-persistent uplink reference signals or uplink channels configured for the first communication node; triggering the first communication node to transmit aperiodic uplink reference signals or uplink channels.

24. A communication node, comprising: a memory storing a computer program, and a processor, wherein the processor executes the computer program to implement the steps of the method in any of claims 1-23.

25. A computer readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method in any of claims 1-23.

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