SRS carrier switching operation method and apparatus
Patent Information
- Application Number
- JP2026517770
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-26
- Publication Date
- 2026-10-14
Smart Images
Figure 2026534226000001_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present invention relate to the field of communication technology. BACKGROUND ART
[0002] In NR Rel-15, a sounding reference signal (SRS) carrier switching operation is introduced. The SRS carrier switching is applied to a component carrier (CC) where PUSCH / PUCCH is not configured, that is, a PUSCH-less cell. When a terminal device cannot support simultaneous transmission of PUSCH and SRS on a plurality of CCs, the terminal device needs to suspend PUSCH uplink transmission on the source CC, and switch to the target CC for SRS transmission (the target CC is PUSCH-less). After transmitting the SRS, the terminal device switches back to the source CC.
[0003] Note that the above description related to the background art is merely for explaining the configuration of the present invention more clearly and completely, and is described for the purpose of enabling those skilled in the art to understand. These configurations shall not be construed as well-known technologies for those skilled in the art just because they are described in the background art section of the present invention. SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION
[0004] According to the findings of the inventors of the present invention, the current SRS carrier switching does not have sufficient flexibility, and there is a need to extend the SRS carrier switching operation.
[0005] In view of at least one of the above problems, embodiments of the present invention provide an SRS carrier switching operation method and apparatus. MEANS FOR SOLVING THE PROBLEMS
[0006] One embodiment of the present invention provides an SRS carrier switching operation method applicable to a terminal device, comprising the steps of: the terminal device receiving instruction information from a network device, the instruction information being used to trigger the terminal device to perform an SRS carrier switching operation; and the terminal device performing an SRS carrier switching operation based on the instruction information.
[0007] Another embodiment of the present invention provides an SRS carrier switching operation device configured in a terminal device, comprising: a receiving unit that receives instruction information from a network device, the instruction information being used to trigger the terminal device to perform an SRS carrier switching operation; and a processing unit that performs an SRS carrier switching operation based on the instruction information.
[0008] Another embodiment of the present invention provides an SRS carrier switching operation method applicable to a network device, the method comprising the step of the network device transmitting instruction information to a terminal device, the instruction information being used to trigger the terminal device to perform an SRS carrier switching operation.
[0009] Another embodiment of the present invention provides an SRS carrier switching operation device configured in a network device, comprising a transmitting unit that transmits instruction information to a terminal device, the instruction information being used to trigger the terminal device to perform an SRS carrier switching operation.
[0010] Another embodiment of the present invention provides a communication system comprising a network device and a terminal device, wherein the network device transmits instruction information to the terminal device, the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation, and the terminal device performs an SRS carrier switching operation based on the instruction information.
[0011] One of the advantageous effects of the embodiments of the present invention is as follows: Flexibility can be improved by extending the SRS carrier switching operation.
[0012] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail, illustrating methods in which the principles of the present invention can be employed. However, the scope of embodiments of the present invention is not limited to these. Embodiments of the present invention include modified, altered, and equivalent forms within the scope of the gist and items of the appended claims.
[0013] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may replace features in other embodiments.
[0014] In this text, the terms "includes / have" mean the presence of a feature, component, step, or constituent element, and do not exclude the presence or addition of one or more other features, components, steps, or constituent elements. [Brief explanation of the drawing]
[0015] Elements and features described in one drawing and one embodiment of the embodiments of the present invention may be combined with elements and features shown in one or more drawings or embodiments. In addition, similar reference numerals in the drawings may indicate corresponding elements in multiple drawings, and may indicate corresponding elements used in one or more embodiments. [Figure 1] This is a schematic diagram of a communication system according to an embodiment of the present invention. [Figure 2] This is a schematic diagram illustrating an example of SRS carrier switching operation. [Figure 3] This is a schematic diagram of an example of an SRS carrier switching operation method according to an embodiment of the present invention. [Figure 4]This is a schematic diagram illustrating an example of how an SRS carrier switching operation according to an embodiment of the present invention is triggered by the DCI format 1_3 of the scheduling PDSCH. [Figure 5] This is a schematic diagram of an example of an SRS carrier switching operation method according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of an example of an SRS carrier switching device according to an embodiment of the present invention. [Figure 7] This is a schematic diagram of an example of an SRS carrier switching device according to an embodiment of the present invention. [Figure 8] This is a schematic diagram of an example of a network device according to an embodiment of the present invention. [Figure 9] This is a schematic diagram of an example of a terminal device according to an embodiment of the present invention. [Modes for carrying out the invention]
[0016] The above and other features of the present invention will become apparent from the following description. Specific embodiments of the present invention are disclosed in detail in the specification and drawings, and some embodiments in which the principles of the present invention can be employed are shown. However, the present invention is not limited to the embodiments described. The present invention includes all modified, altered and equivalent versions within the scope of the appended claims. Embodiments of the present invention will be described below with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.
[0017] In embodiments of the present invention, terms such as "first," "second," etc., are used in titles to distinguish different elements, but do not represent a spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any one or more of the terms listed in the relevant list and all combinations thereof. The terms "include," "equip," "have," etc., mean the presence of the listed features, elements, components, or components, but do not exclude the presence or addition of one or more other features, elements, components, or components.
[0018] In the embodiments of the present invention, singular forms such as "a", "the" and the like include plural references, and should be broadly understood as "one type" or "one category", without being limited to "one individual". In addition, the term "the" should be understood to include both singular and plural forms unless the context clearly dictates otherwise. Furthermore, unless the context clearly dictates otherwise, the term "described in" should be understood as "described at least in part", and the term "based on" should be understood as "based at least in part on".
[0019] In the embodiments of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA (registered trademark)), High-Speed Packet Access (HSPA), and the like.
[0020] Further, communication between apparatuses in the communication system may be performed according to any stage of communication protocols, which may include, but are not limited to, for example, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), future 6G, and / or other currently known communication protocols or other communication protocols to be developed in the future.
[0021] In the embodiments of the present invention, the term "network apparatus" refers to, for example, an apparatus in a communication system that allows a terminal apparatus to access the communication system and provides services to the terminal apparatus. The network apparatus may include, but is not limited to, a Base Station (BS), an Access Point (AP), a Transmission Reception Point (TRP), a broadcast transmitter, a Mobile Management Entity (MME), a gateway, a server, a Radio Network Controller (RNC), a Base Station Controller (BSC), and the like.
[0022] Here, the base station may include, but is not limited to, a Node B (NodeB or NB), an Evolved Node B (eNodeB or eNB), a 5G base station (gNB), an IAB donor, and the like, as well as a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay apparatus, or a low-power node (e.g., femto, pico, etc.). In addition, the term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographical area. The term "cell" may refer to the base station and / or its coverage area, depending on the context in which the term is used.
[0023] In embodiments of the present invention, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer to equipment that accesses a communication network and receives network services, for example, via a network device. Terminal equipment may be fixed or mobile and may be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.
[0024] Here, terminal devices may include, but are not limited to, mobile phones (cellular phones), personal digital assistants (PDAs), radio modulators / demodulators, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smartwatches, digital cameras, and the like.
[0025] Furthermore, in scenarios such as the Internet of Things (IoT), the user device may be a monitoring or measurement device or apparatus, and may include, but is not limited to, machine-type communication (MTC) terminals, in-vehicle communication terminals, device-to-device (D2D) terminals, and machine-to-machine (M2M) terminals.
[0026] Furthermore, the terms “Network side” or “Network device side” mean the side of the network, which may be a base station or include one or more of the above-mentioned network devices. The terms “User side” or “Terminal side” or “Terminal device side” mean the side of the user or terminal, which may be a UE or include one or more of the above-mentioned terminal devices. In this specification, unless otherwise specified, “device” may mean network device or terminal device.
[0027] The following describes a scenario of an embodiment of the present invention with reference to an example, but the present invention is not limited thereto.
[0028] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present invention, schematically showing examples of terminal devices and network devices. As shown in Figure 1, the communication system 100 may include a network device 101 and terminal devices 102 and 103. For the sake of explanation, Figure 1 is described using two terminal devices and one network device as an example, but embodiments of the present invention are not limited thereto.
[0029] In embodiments of the present invention, existing services or services that can be implemented in the future can be provided between the network device 101 and the terminal devices 102 and 103. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communication (URLLC), and related communications for terminal devices with reduced capabilities.
[0030] Although Figure 1 shows that both terminal devices 102 and 103 are located within the coverage area of network device 101, the present invention is not limited to this. Neither of the two terminal devices 102 and 103 are located within the coverage area of network device 101, or one terminal device 102 may be located within the coverage area of network device 101 and the other terminal device 103 may be located outside the coverage area of network device 101.
[0031] Figure 2 is a schematic diagram of an example of SRS carrier switching operation. As shown in Figure 2, the terminal device cannot support simultaneous PUSCH and SRS transmission on multiple CCs (c1 and c2 shown in Figure 2). Therefore, it is necessary to suspend the PUSCH uplink transmission on the source CC (i.e., c2 (also called the source cell)) and switch to the target CC (i.e., c1 (also called the target cell)) for SRS transmission. After transmitting the SRS, the terminal device switches back to the source CC. For SRS carrier switching, an SRS resource set with usage set to "antennaSwitching" is used. The SRS carrier switching is triggered by DCI format 2_3.
[0032] In Rel-17, available slot operation was introduced for aperiodic SRS transmissions, and the available slot operation for SRS applies to DCI formats 0_1 / 0_2 / 1_1 / 1_2, and DCI 0_1 / 0_2 may or may not schedule a push. However, the available slot operation does not apply to DCI format 2_3.
[0033] Furthermore, in Rel-16, the following antenna configurations are supported for SRS antenna switching: 1T1R / 1T2R / 1T4R / 2T2R / 2T4R / 4T4R. Regarding antenna switching, the maximum number of aperiodic SRS resource sets is two. In Rel-17, with regard to SRS antenna switching, the antenna configuration is expanded to 8Rx, including 1T6R / 1T8R / 2T6R / 2T8R / 4T8R. For 1T6R / 1T8R / 2T6R / 2T8R, up to three or four aperiodic SRS resource sets may be configured, depending on whether the terminal device can transmit SRS only on the last six OFDM symbols in the slot, or on any symbol in the slot.
[0034] For SRS antenna switching, a gap symbol is formed between two adjacent SRS resources. The length of the gap is represented by the Y symbol. If the two sets of SRS resources used for antenna switching are in consecutive slots, an inter-set gap symbol is formed. Table 1 schematically shows the length of the gap (Y symbol) for SRS antenna switching.
[0035] [Table 1] In Rel-18, DCI formats 0_3 / 1_3 were introduced for multi-carrier scheduling. That is, a single DCI can schedule PDSCH / PUSCH transmissions in multi-carrier configurations.
[0036] In addition to DCI format 2_3, there is discussion as to whether DCI formats 1_1 / 1_2 can trigger SRS carrier switching. Since DCI formats 1_1 / 1_2 are used for PDSCH scheduling, DCI formats 1_1 / 1_2 may be used to trigger SRS carrier switching operations in cells without push.
[0037] According to the inventors of this invention, currently only UE actions for SRS carrier switching operations triggered by DCI format 2_3 are specified, and available slot actions are not applicable. However, available slot actions may be used for DCI formats 1_1 / 1_2. Therefore, it is necessary to clarify whether available slot actions are applicable when DCI formats 1_1 / 1_2 can be used to trigger SRS carrier switching.
[0038] In addition to DCI formats 2_3 and 1_1 / 1_2, it is necessary to clarify whether other DCI formats may be used to trigger SRS carrier switching operations, such as DCI format 0_1 / 0_2 (which does not schedule pushes) and DCI format 1_3 / 0_3 (for multi-carrier scheduling).
[0039] Furthermore, the current specification limits SRS carrier switching to only one or two aperiodic SRS resource sets. However, in Rel-17, the number of aperiodic SRS resource sets for antenna switching may be up to four. This means that some configurations do not support carrier switching and are therefore not functioning. The restriction to one or two aperiodic SRS resource sets should be removed.
[0040] Furthermore, with regard to SRS antenna switching, an inter-set gap can be configured. However, with regard to SRS carrier switching, if the interval between two SRS resource sets is greater than the required switching time, the terminal device may switch back to the source CC. When an inter-set gap is configured, the terminal device should remain within the target CC in the gap symbol.
[0041] In embodiments of the present invention, the upper-layer signaling may be, for example, a radio resource control (RRC) signaling. The RRC signaling includes, for example, an RRC message, and includes, for example, a master information block (MIB), system information, a dedicated RRC message, or an RRC IE (RRC information element). The upper-layer signaling may also be, for example, a MAC (Medium Access Control) signaling, or may be referred to as a MAC CE (MAC control element). However, the present invention is not limited to these.
[0042] In the following explanation, the terms "PDCCH" and "physical downlink control channel" or "downlink control information" may be substituted for each other, unless confusion arises. The terms "PDSCH" and "physical downlink data channel" or "downlink data" may also be substituted for each other. Furthermore, transmitting or receiving a PDCCH may be understood as transmitting or receiving downlink control information carried by the PDCCH, and transmitting or receiving a PDSCH may be understood as transmitting or receiving downlink data carried by the PDSCH.
[0043] <Example 1> An embodiment of the present invention provides an SRS carrier switching operation method, which will be described from the terminal device side. Figure 3 is a schematic diagram of an example of an SRS carrier switching operation method according to an embodiment of the present invention. As shown in Figure 3, the method includes the following steps.
[0044] Step 301: The terminal device receives instruction information from the network device. Here, the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation.
[0045] Step 302: The terminal device performs an SRS carrier switching operation based on the instruction information.
[0046] Figure 3 above merely provides a schematic representation of an embodiment of the present invention, but the present invention is not limited thereto. For example, the execution order between various steps may be appropriately adjusted, or several other steps may be added or several steps removed. Those skilled in the art can make appropriate modifications based on the above description and are not limited to the description in Figure 3.
[0047] In some embodiments, the instruction information is in DCI format 1_1 / 1_2, and the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 in which available slot operations are disabled.
[0048] In some embodiments, the available slot parameters are not configured for the aperiodic SRS resource set of all bandwidth portions (BWP, BandWith Part) in the target component carrier (CC).
[0049] In some embodiments, the DCI format 1_1 / 1_2 is transmitted along with the scheduling PDSCH.
[0050] In some embodiments, the DCI format 1_1 / 1_2 is not transmitted along with the scheduling PDSCH.
[0051] For example, an SRS carrier switching operation may be triggered by a DCI format 1_1 / 1_2 in which the available slot operation is disabled. For example, all nonperiodic SRS resource sets on BWPs in the target CC do not have the availableSlotOffsetList parameter configured. Also, DCI format 1_1 / 1_2 may be sent with the scheduling PDSCH, or it may not be sent with the scheduling PDSCH.
[0052] Table 2 shows the case where SRS carrier switching operation is triggered by DCI format 1_1 / 1_2, which does not have available slot operation.
[0053] [Table 2] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2, in which available slot operations are disabled.
[0054] For example, whether an SRS carrier switching operation is triggered by DCI format 1_1 / 1_2, which does not have available slot operations, may depend on the capabilities of the UE.
[0055] In some embodiments, the instruction information is in DCI format 1_1 / 1_2, and the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 with available slot operation enabled.
[0056] In some embodiments, the DCI format 1_1 / 1_2 is transmitted along with the scheduling PDSCH.
[0057] In some embodiments, the DCI format 1_1 / 1_2 is not transmitted along with the scheduling PDSCH.
[0058] For example, an SRS carrier switching operation may be triggered by a DCI format 1_1 / 1_2 with an available slot operation (enabled) enabled. The DCI format 1_1 / 1_2 may be transmitted with the scheduling PDSCH, or it may not be transmitted with the scheduling PDSCH.
[0059] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2, which enables the available slot operation.
[0060] For example, whether an SRS carrier switching operation is triggered by a DCI format 1_1 / 1_2 with available slot operations may depend on the capabilities of the UE.
[0061] In some embodiments, the instruction information is in DCI format 0_1 / 0_2, and the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2 without a scheduling push.
[0062] In some embodiments, the available slot operations are enabled or disabled.
[0063] In some embodiments, the TPC instruction in the DCI format 0_1 / 0_2 is applied to the SRS transmission in the SRS carrier switching operation.
[0064] In some embodiments, the instruction information is in DCI format 0_1 / 0_2, and the SRS carrier switching operation cannot be triggered by DCI format 0_1 / 0_2 without a scheduling push.
[0065] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2, which does not have a scheduling push.
[0066] For example, whether the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2, which does not have a scheduling push, may depend on the capabilities of the UE.
[0067] In some embodiments, the available slot operations are enabled or disabled depending on the capabilities of the terminal device.
[0068] For example, whether or not available slot operations are applicable may also depend on the capabilities of the UE.
[0069] In some embodiments, the instruction information is in DCI format 1_3, which is used to schedule PDSCH transmissions in PUSCH-less cells, and which triggers the SRS carrier switching operation.
[0070] Figure 4 is a schematic diagram illustrating an example in which an SRS carrier switching operation according to an embodiment of the present invention is triggered by the DCI format 1_3 of a scheduling PDSCH. As shown in Figure 4, DCI format 1_3 is used to schedule PDSCH transmissions (for example, PDSCH on CC#1,...#N as shown in Figure 4), and the SRS carrier switching operation (on CC#X as shown in Figure 4) is triggered by the DCI format 1_3.
[0071] In some embodiments, the TPC instruction in DCI format 1_3 is applied to SRS transmission in a PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC for the SRS carrier switching operation.
[0072] For example, a TPC instruction included in DCI format 1_3 corresponds to a scheduling CC for SRS carrier switching, and the TPC instruction may be applied to SRS transmission in a PUSCH-less cell during an SRS carrier switching operation.
[0073] In some embodiments, for the DCI format 1_3, the available slot operations are applied to the SRS carrier switching operations.
[0074] In some embodiments, the available slot operations are not applicable to the SRS carrier switching operation triggered by the DCI format 1_3.
[0075] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation triggered by DCI format 1_3 may or may not have available slot operations.
[0076] For example, whether an SRS carrier switching operation is triggered by a DCI format 1_3 that has or does not have an available slot operation may depend on the capabilities of the UE.
[0077] In some embodiments, the instruction information is in DCI format 0_3, and the SRS carrier switching operation is triggered by DCI format 0_3 without a scheduling push.
[0078] In some embodiments, the TPC instruction in DCI format 0_3 is applied to SRS transmission in a PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC for the SRS carrier switching operation.
[0079] For example, a TPC instruction included in DCI format 0_3 corresponds to a scheduling CC for SRS carrier switching, and the TPC instruction may be applied to SRS transmission in a push-less cell during an SRS carrier switching operation.
[0080] In some embodiments, for DCI format 0_3 that does not have a scheduling push, the available slot operation is applied to the SRS carrier switching operation.
[0081] In some embodiments, the available slot operations are not applicable to the SRS carrier switching operation triggered by DCI format 0_3, which does not have a scheduling push.
[0082] For example, for a DCI format 0_3 that does not have a scheduling push, the available slot operations may be applied to SRS carrier switching operations. Alternatively, the available slot operations may not be applied to SRS carrier switching operations triggered by a DCI format 0_3, and the DCI format 0_3 does not have a scheduling push.
[0083] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation triggered by DCI format 0_3 may or may not have available slot operations.
[0084] For example, whether an SRS carrier switching operation is triggered by a DCI format 0_3 that has or does not have an available slot operation may depend on the capabilities of the UE.
[0085] In some embodiments, the instruction information is in DCI format 0_3, the SRS carrier switching operation is triggered by DCI format 0_3 without scheduling pushes in cells without pushes, and DCI format 0_3 schedules push transmissions in other cells.
[0086] For example, an SRS carrier switching operation may be triggered by DCI format 0_3, which does not have scheduled pushes in a push-less cell, and which may schedule push transmissions in other cells.
[0087] In some embodiments, the TPC instruction in DCI format 0_3 is applied to SRS transmission in the PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC for the SRS carrier switching operation.
[0088] For example, a TPC instruction included in DCI format 0_3 corresponds to a scheduling CC for SRS carrier switching, and the TPC instruction may be applied to SRS transmission in a PUSCH-less cell during an SRS carrier switching operation.
[0089] In some embodiments, for the DCI format 0_3, the available slot operations are applied to the SRS carrier switching operations.
[0090] In some embodiments, the available slot operations are not applicable to the SRS carrier switching operation triggered by DCI format 0_3, which schedules push transmissions in other cells.
[0091] For example, available slot operations may be applied to SRS carrier switching operations. Alternatively, available slot operations may not be applied to SRS carrier switching operations triggered by DCI format 0_3, which then schedules push transmissions in other cells.
[0092] In some embodiments, the SRS carrier switching operation, triggered by DCI format 0_3 which schedules push transmissions in other cells depending on the capabilities of the terminal device, may or may not have available slot operations.
[0093] For example, an SRS carrier switching operation may be triggered by DCI format 0_3, which is used to schedule push transmissions in other cells, and whether or not the SRS carrier switching operation has available slot operations may be determined based on the capabilities of the UE.
[0094] In some embodiments, depending on the capabilities of the terminal device, it is determined whether the available slot operations are applicable to the SRS carrier switching operation.
[0095] In some embodiments, the capabilities of the terminal device apply to one, more, or all DCI formats that can trigger the SRS carrier switching operation.
[0096] For example, whether an available slot operation applies to SRS carrier switching may be determined by the capabilities of the UE. The capabilities of the UE may apply to one, more, or all DCI formats that can trigger an SRS carrier switching operation.
[0097] In some embodiments, it is supported that three or more aperiodic SRS resource set configurations are used for the SRS carrier switching operation, thereby removing the limitation to one or two aperiodic SRS resource sets for the SRS carrier switching operation.
[0098] For example, the configuration of three or more aperiodic SRS resource sets (e.g., three or more aperiodic RS resource sets for 1T8R / 1T6R / 2T8R / 2T6R) is supported for use in SRS carrier switching operations. Alternatively, the restriction on using one or two aperiodic SRS resource sets for SRS carrier switching is removed.
[0099] Table 3 shows an example of when the SRS carrier switching restriction is lifted. As shown in Table 3, the "one or two" restriction is lifted.
[0100] [Table 3] Table 4 shows another example of the removal of the SRS carrier switching restriction. As shown in Table 4, the restriction "one or two" is replaced with "up to four".
[0101] [Table 4] In some embodiments, if an inter-set gap symbol is configured for the SRS carrier switching operation, the terminal device remains at the target CC during the inter-set gap symbol.
[0102] For example, in the case of SRS carrier switching operation, if an inter-set gap symbol is configured, the UE remains at the target CC between the inter-set gap symbols. Also, for example, if the inter-set gap is equal to the Y symbols shown in Table 1, the UE remains at the target CC between the inter-set gap symbols.
[0103] The above embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.
[0104] According to this embodiment, flexibility can be improved by extending the SRS carrier switching operation.
[0105] <Example 2> Embodiments of the present invention provide an SRS carrier switching operation method and will be described from the network device side. Embodiment 2 may be combined with Embodiment 1, and the description of the same contents as Embodiment 1 will be omitted.
[0106] Figure 5 is a schematic diagram of an example of an SRS carrier switching operation method according to an embodiment of the present invention. As shown in Figure 5, the method includes the following steps.
[0107] Step 501: The network device transmits instruction information to the terminal device, which is used to trigger the terminal device to perform an SRS carrier switching operation.
[0108] Figure 5 above merely provides a schematic representation of an embodiment of the present invention, but the present invention is not limited thereto. For example, the execution order between various steps may be appropriately adjusted, or several other steps may be added, or several steps may be removed. Those skilled in the art can make appropriate modifications based on the above description and are not limited to the description in Figure 5.
[0109] The above embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.
[0110] According to this embodiment, flexibility can be improved by extending the SRS carrier switching operation.
[0111] <Example 3> Embodiments of the present invention provide an SRS carrier switching operation device. This device may be, for example, a terminal device, or one or more components configured within a terminal device. Descriptions of aspects similar to those in Embodiment 1 are omitted.
[0112] Figure 6 is a schematic diagram of an example of an SRS carrier switching device according to an embodiment of the present invention. As shown in Figure 6, the SRS carrier switching device 600 includes the following parts.
[0113] The receiving unit 601 receives instruction information from the network device. Here, the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation.
[0114] The processing unit 602 performs an SRS carrier switching operation based on the instruction information.
[0115] In some embodiments, the instruction information is in DCI format 1_1 / 1_2, and the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 in which available slot operations are disabled.
[0116] In some embodiments, the available slot parameters are not configured for the aperiodic SRS resource set of all BWPs in the target component carrier (CC).
[0117] In some embodiments, the DCI format 1_1 / 1_2 is transmitted along with the scheduling PDSCH.
[0118] In some embodiments, the DCI format 1_1 / 1_2 is not transmitted along with the scheduling PDSCH.
[0119] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2, in which available slot operations are disabled.
[0120] In some embodiments, the instruction information is in DCI format 1_1 / 1_2, and the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 with available slot operation enabled.
[0121] In some embodiments, the DCI format 1_1 / 1_2 is transmitted along with the scheduling PDSCH.
[0122] In some embodiments, the DCI format 1_1 / 1_2 is not transmitted along with the scheduling PDSCH.
[0123] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2, which enables the available slot operation.
[0124] In some embodiments, the instruction information is in DCI format 0_1 / 0_2, and the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2 without a scheduling push.
[0125] In some embodiments, available slot operations are enabled or disabled.
[0126] In some embodiments, the TPC instruction in the DCI format 0_1 / 0_2 is applied to the SRS transmission in the SRS carrier switching operation.
[0127] In some embodiments, the instruction information is in DCI format 0_1 / 0_2, and the SRS carrier switching operation cannot be triggered by DCI format 0_1 / 0_2 without a scheduling push.
[0128] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2, which does not have a scheduling push.
[0129] In some embodiments, the available slot operations are enabled or disabled depending on the capabilities of the terminal device.
[0130] In some embodiments, the instruction information is in DCI format 1_3, which is used to schedule PDSCH transmissions in PUSCH-less cells, and which triggers the SRS carrier switching operation.
[0131] In some embodiments, the TPC instruction in DCI format 1_3 is applied to SRS transmission in a PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC for the SRS carrier switching operation.
[0132] In some embodiments, for the DCI format 1_3, the available slot operations are applied to the SRS carrier switching operation, or the available slot operations are not applied to the SRS carrier switching operation triggered by the DCI format 1_3.
[0133] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation triggered by DCI format 1_3 may or may not have available slot operations.
[0134] In some embodiments, the instruction information is in DCI format 0_3, and the SRS carrier switching operation is triggered by DCI format 0_3 without a scheduling push.
[0135] In some embodiments, the TPC instruction in DCI format 0_3 is applied to SRS transmission in a PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC for the SRS carrier switching operation.
[0136] In some embodiments, for DCI format 0_3 without scheduling pushes, available slot operations are applied to the SRS carrier switching operation, or are not applied to the SRS carrier switching operation triggered by DCI format 0_3 without scheduling pushes.
[0137] In some embodiments, depending on the capabilities of the terminal device, the SRS carrier switching operation triggered by DCI format 0_3 may or may not have available slot operations.
[0138] In some embodiments, the instruction information is in DCI format 0_3, the SRS carrier switching operation is triggered by DCI format 0_3 without scheduling pushes in cells without pushes, and DCI format 0_3 schedules push transmissions in other cells.
[0139] In some embodiments, the TPC instruction in DCI format 0_3 is applied to SRS transmission in the PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC for the SRS carrier switching operation.
[0140] In some embodiments, for the DCI format 0_3, available slot operations are applied to the SRS carrier switching operation, or are not applied to the SRS carrier switching operation triggered by DCI format 0_3 scheduling a push transmission in another cell.
[0141] In some embodiments, the SRS carrier switching operation, triggered by DCI format 0_3 which schedules push transmissions in other cells depending on the capabilities of the terminal device, may or may not have available slot operations.
[0142] In some embodiments, depending on the capabilities of the terminal device, it is determined whether the available slot operations are applicable to the SRS carrier switching operation.
[0143] In some embodiments, the capabilities of the terminal device apply to one, more, or all DCI formats that can trigger the SRS carrier switching operation.
[0144] In some embodiments, it is supported that three or more aperiodic SRS resource set configurations are used for the SRS carrier switching operation.
[0145] In some embodiments, the limitation of one or two aperiodic SRS resource sets for SRS carrier switching operations is removed.
[0146] In some embodiments, if an inter-set gap symbol is configured for the SRS carrier switching operation, the terminal device remains at the target CC during the inter-set gap symbol.
[0147] The above embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used individually, or one or more of the above embodiments may be used in combination.
[0148] Although the above description only concerns components or modules related to the present invention, the present invention is not limited thereto. The SRS carrier switching device 600 may further include other components or modules. For specific details of these components or modules, refer to related technologies.
[0149] Furthermore, for the sake of clarity, Figure 6 merely illustrates the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related techniques, such as bus connections, can be used. The various components or modules described above may also be implemented by hardware devices such as processors, memory, transmitters, and receivers, and the present invention is not limited thereto.
[0150] According to this embodiment, flexibility can be improved by extending the SRS carrier switching operation.
[0151] <Example 4> Embodiments of the present invention provide an SRS carrier switching operation device. This device may be, for example, a network device, or one or more components configured within a network device. Descriptions of aspects similar to those in Embodiments 1 and 2 are omitted.
[0152] Figure 7 is a schematic diagram of an example of an SRS carrier switching device according to an embodiment of the present invention. As shown in Figure 7, the SRS carrier switching device 700 includes the following parts.
[0153] The transmitting unit 701 transmits instruction information to the terminal device. Here, the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation.
[0154] Although the above description only concerns components or modules related to the present invention, the present invention is not limited thereto. The SRS carrier switching device 700 may further include other components or modules. For specific details of these components or modules, refer to related technologies.
[0155] Furthermore, for the sake of clarity, Figure 7 merely illustrates the connection relationships or signal directions between various components or modules; however, it will be apparent to those skilled in the art that various related techniques, such as bus connections, can be used. The above-mentioned components or modules may also be implemented by hardware devices such as processors, memory, transmitters, and receivers, and the present invention is not limited thereto.
[0156] According to this embodiment, flexibility can be improved by extending the SRS carrier switching operation.
[0157] <Example 5> Embodiments of the present invention further provide a communication system, which may be described by referring to Figure 1, and the description of the same content as in Embodiments 1 to 4 will be omitted.
[0158] In some embodiments, the communication system 100 may include at least a network device and a terminal device.
[0159] The network device transmits instruction information to the terminal device. Here, the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation.
[0160] The terminal device performs an SRS carrier switching operation based on the instruction information.
[0161] Embodiments of the present invention further provide a network device, which may be, for example, a base station, but the present invention is not limited thereto and may be other network devices.
[0162] Figure 8 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in Figure 8, the network device 800 may include a processor 810 (e.g., a central processing unit (CPU)) and a memory 820, the memory 820 being connected to the processor 810. The memory 820 may store various types of data, and may also store an information processing program 830, which is executed under the control of the processor 810.
[0163] For example, the processor 810 may be programmed to implement the SRS carrier switching operation method described in Embodiment 2. For example, the processor 810 may be configured to perform the step of sending instruction information to a terminal device, which is used to trigger the terminal device to perform an SRS carrier switching operation.
[0164] Furthermore, as shown in Figure 8, the network device 800 may further include a transceiver 840 and an antenna 850, etc. The functions of the above components are similar to those of the prior art, and their explanation is omitted here. Note that the network device 800 does not need to include all the units shown in Figure 8. Also, the network device 800 may further include units not shown in Figure 8, and prior art may be referenced.
[0165] The embodiments of the present invention further provide terminal devices, but the present invention is not limited thereto and may include other devices.
[0166] Figure 9 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in Figure 9, the terminal device 900 may include a processor 910 and a memory 920, the memory 920 storing data and programs and connected to the processor 910. Note that this figure is illustrative, and this structure may be supplemented or replaced with other types of structures to realize communication functions or other functions.
[0167] For example, the processor 910 may be programmed to implement the SRS carrier switching operation method described in Embodiment 1. For example, the processor 910 may be configured to perform the steps of: receiving instruction information from a network device, the instruction information being used to trigger the terminal device to perform an SRS carrier switching operation; and performing an SRS carrier switching operation based on the instruction information.
[0168] Furthermore, as shown in Figure 9, the terminal device 900 may further include a communication module 930, an input unit 940, a display 950, and a power supply 960, etc. The functions of the above units are the same as in the prior art, and their explanation is omitted here. Note that the terminal device 900 does not need to include all the units shown in Figure 9. Also, the terminal device 900 may further include units not shown in Figure 9, and prior art may be referenced.
[0169] In embodiments of the present invention, a computer-readable program is provided that, when executed on a terminal device, causes the terminal device to execute the SRS carrier switching operation method described in Embodiment 1.
[0170] Embodiments of the present invention further provide a storage medium in which a computer-readable program is stored, and which causes a terminal device to execute the SRS carrier switching operation method described in Embodiment 1 when the program is executed.
[0171] In embodiments of the present invention, a computer-readable program is provided that, when executed in a network device, causes the network device to execute the SRS carrier switching operation method described in Embodiment 2.
[0172] Embodiments of the present invention further provide a storage medium that stores a computer-readable program, and which, when executing the program, causes a network device to execute the SRS carrier switching operation method described in Embodiment 2.
[0173] The above-described apparatus and method of the present invention may be implemented by hardware, or by combining hardware and software. The present invention relates to a computer-readable program, and when the program is executed by a logic unit, the logic unit may implement the above-described apparatus or configuration requirements, or the logic unit may implement the above-described methods or steps. The present invention relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.
[0174] Each processing method in each apparatus described with reference to embodiments of the present invention may be implemented using hardware, software modules executed by a processor, or a combination of both. For example, one or more functional block diagrams shown in the drawings, or one or more combinations of functional block diagrams, may correspond to each software module in a computer program flow, or to each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by hardwareizing these software modules, for example, using a field-programmable gate array (FPGA).
[0175] The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor can read information from or write information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the mobile terminal or on a memory card inserted into the mobile terminal. For example, if the device (e.g., a mobile terminal) uses a relatively large capacity MEGA-SIM card or a high-capacity flash memory device, the software module may be stored on the MEGA-SIM card or high-capacity flash memory device.
[0176] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic unit, a discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented, for example, by a combination of computing equipment, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors combined with DSP communication, or any other configuration.
[0177] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes can be made to the present invention as long as they do not deviate from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.
[0178] Furthermore, the following additional information is disclosed regarding embodiments including the above-described examples. (Note 1) A method for switching SRS carriers, applicable to a terminal device, A step in which a terminal device receives instruction information from a network device, wherein the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation. A method comprising the step of the terminal device performing an SRS carrier switching operation based on the instruction information. (Note 2) A method for switching SRS carriers, applicable to network devices, A method comprising the step of a network device transmitting instruction information to a terminal device, the instruction information being used to trigger the terminal device to perform an SRS carrier switching operation. (Note 3) A terminal device comprising a memory storing a computer program and a processor, wherein the processor is configured to implement the SRS carrier switching operation method described in Appendix 1 by executing the computer program. (Note 4) A network device comprising a memory storing a computer program and a processor, wherein the processor is configured to execute the computer program to realize the SRS carrier switching operation method described in Appendix 2.
Claims
1. An SRS carrier switching device configured in a terminal device, A receiving unit that receives instruction information from a network device, wherein the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation. An apparatus including a processing unit that performs an SRS carrier switching operation based on the aforementioned instruction information.
2. The instruction information is in DCI format 1_1 / 1_2, and the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 in which the available slot operation is disabled. For all nonperiodic SRS resource sets of BWP in the target component carrier, no available slot parameters are configured. The apparatus according to claim 1, wherein the DCI format 1_1 / 1_2 is transmitted together with the scheduling PDSCH, or is not transmitted together with the scheduling PDSCH.
3. The apparatus according to claim 1, wherein, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 in which available slot operations are disabled.
4. The instruction information is in DCI format 1_1 / 1_2, and the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 in which the available slot operation is enabled. The apparatus according to claim 1, wherein the DCI format 1_1 / 1_2 is transmitted together with the scheduling PDSCH, or is not transmitted together with the scheduling PDSCH.
5. The apparatus according to claim 1, wherein, depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 1_1 / 1_2 in which available slot operations are enabled.
6. The instruction information is in DCI format 0_1 / 0_2, and the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2 without scheduling push. The available slot operations are enabled, or the available slot operations are disabled. The apparatus according to claim 1, wherein the TPC instruction in the DCI format 0_1 / 0_2 is applied to the SRS transmission in the SRS carrier switching operation.
7. The apparatus according to claim 1, wherein the instruction information is in DCI format 0_1 / 0_2, and the SRS carrier switching operation cannot be triggered by DCI format 0_1 / 0_2 without scheduling push.
8. Depending on the capabilities of the terminal device, the SRS carrier switching operation is triggered by DCI format 0_1 / 0_2, which does not have a scheduling PUSCH. The apparatus according to claim 1, wherein the available slot operations are enabled or disabled depending on the capabilities of the terminal device.
9. The instruction information is in DCI format 1_3, the DCI format 1_3 is used to schedule PDSCH transmission in a PUSCH-less cell, and the SRS carrier switching operation is triggered by the DCI format 1_3. The TPC instruction in the DCI format 1_3 is applied to SRS transmission in a PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC of the SRS carrier switching operation. The apparatus according to claim 1, wherein, with respect to the DCI format 1_3, the available slot operations are applied to the SRS carrier switching operation, or the available slot operations are not applied to the SRS carrier switching operation triggered by the DCI format 1_3.
10. The apparatus according to claim 1, wherein, depending on the capabilities of the terminal device, the SRS carrier switching operation triggered by DCI format 1_3 has available slot operations or does not have available slot operations.
11. The instruction information is in DCI format 0_3, and the SRS carrier switching operation is triggered by DCI format 0_3 without scheduling push. The TPC instruction in DCI format 0_3 is applied to SRS transmission in a PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC of the SRS carrier switching operation. The apparatus according to claim 1, wherein, for DCI format 0_3 without scheduling push, available slot operations are applied to the SRS carrier switching operation, or, the available slot operations are not applied to the SRS carrier switching operation triggered by DCI format 0_3 without scheduling push.
12. The apparatus according to claim 1, wherein, depending on the capabilities of the terminal device, the SRS carrier switching operation triggered by DCI format 0_3 has available slot operations or does not have available slot operations.
13. The apparatus according to claim 1, wherein the instruction information is in DCI format 0_3, the SRS carrier switching operation is triggered by DCI format 0_3 without scheduling PUSCH in a PUSCH-less cell, and the DCI format 0_3 schedules PUSCH transmission in other cells.
14. The TPC instruction in DCI format 0_3 is applied to SRS transmission in the PUSCH-less cell during the SRS carrier switching operation, and the TPC instruction corresponds to the scheduling CC of the SRS carrier switching operation. The apparatus according to claim 13, wherein, with respect to the DCI format 0_3, the available slot operations are applied to the SRS carrier switching operations, or the available slot operations are not applied to the SRS carrier switching operations triggered by the DCI format 0_3 scheduling a PUSCH transmission in another cell.
15. The apparatus according to claim 1, wherein the SRS carrier switching operation, triggered by DCI format 0_3 which schedules PUSCH transmission in other cells according to the capabilities of the terminal device, has or does not have available slot operations.
16. Depending on the capabilities of the terminal device, it is determined whether the available slot operations are applicable to the SRS carrier switching operation. The apparatus according to claim 1, wherein the capability of the terminal device is applicable to one or more or all DCI formats that can trigger the SRS carrier switching operation.
17. It is supported that three or more aperiodic SRS resource set configurations are used for the SRS carrier switching operation. The apparatus according to claim 1, wherein the restriction on one or two aperiodic SRS resource sets for SRS carrier switching operations is released.
18. The apparatus according to claim 1, wherein, in the case of the SRS carrier switching operation, if an inter-set gap symbol is configured, the terminal device remains at the target CC during the inter-set gap symbol.
19. An SRS carrier switching device configured in a network device, A device comprising a transmitting unit for transmitting instruction information to a terminal device, wherein the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation.
20. A communication system including a network device and a terminal device, The network device transmits instruction information to the terminal device, and the instruction information is used to trigger the terminal device to perform an SRS carrier switching operation. The terminal device is a communication system that performs SRS carrier switching operations based on the instruction information.