CROSS-REFERENCE TO RELATED APPLICATION(S)

[0001] This application claims the benefit of priority of U.S. Provisional Patent Application Serial No. 63/308,824, filed February 10, 2022, which is incorporated by reference herein in its entirety.

TECHNICAL FIELD

[0002] The present disclosure relates to Physical Downlink Control Channel (PDCCH) occasion determination. More specifically, systems and methods for determining PDCCH monitoring occasions from multiple Transmission Configuration Indicator (TCI) states are provided.

BACKGROUND

[0003] New Radio (NR) and fifth generation (5G) communication systems support PDCCH transmission. For PDCCH transmission, user equipment (e.g., UE) is configured with one or more Control Resource Sets (CORESETs). Each of the CORESETs defines some resource(s) in a frequency domain. The UE is also configured with one or more search spaces and each search space is associated with a CORSET. The search space can provide the configuration of time and frequency for PDCCH transmission and monitoring occasion for the UE.

[0004] A special CORESET is called “CORESET#0.” A base station (e.g., gNB) can use a Media Access Control Control Element (MAC CE) command to indicate a TCI state to “CORESET#0.” In the indicated TCI state, a Channel State Information Reference Signal (CSI-RS) source needs to be quasi-co-located with a Synchronization Signal (SS) I Physical Broadcast Channel (PBCH) block. The UE is requested to derive the configuration of the search space associated with “CORESET#0” based on this SS/PBCH block. [0005] NR/5G also supports a link recovery function. During a link recovery operation, after a link failure reporting is successfully received by the base station 101 , the UE can switch its spatial domain filter applied on PLISCH, PLICCH and SRS (Sounding Reference Signal) to a default transmit filter.

[0006] However, drawbacks of the foregoing methods include, for example, in some cases, the “CORESET#0” can be indicated with two TCI states. In such cases, how to determine the configuration of search space associated with CORESET#0 is not clear. Another drawback is that power control parameters for PUSCH/PUCCH/SRS after a link recovery have not been determined. Therefore, improved systems and methods that can address the foregoing issues are desirable and beneficial.

SUMMARY

[0007] The present disclosure is related to systems and methods for determining PDCCH monitoring occasions when more than one TCI states are indicated (e.g., to a Control Resource Set, CORESET). The present systems and methods provide solutions for determining uplink power control parameters for Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH) and Sounding Reference Signal (SRS) after a link recovery in a unified TCI framework. The present disclosure also provides solutions for transmitting acknowledgement to a beam reporting instance.

[0008] In some embodiments, a terminal device (e.g., UE) can be configured with a CORESET with index “0” and a search space with “searchSpacelD = 0.” The search space with “searchSpacelD = 0” is associated with the CORESET with index “0.” In such embodiments, a base station (e.g., gNB) can use an MAC/CE activation command to indicate two TCI states for CORESET with index 0. When two TCI states are indicated for CORESET with index “0,” the terminal device can determine a PDCCH monitoring occasion in the search space with “searchSpacelD = 0” based on the indicated TCI states.

[0009] By the foregoing arrangements, the present systems and methods enables effective determination of PDCCH monitoring occasions when a special CORESET (“CORESET#0”) is configured with two TCI states. [0010] In some embodiments, the present method can be implemented by a tangible, non-transitory, computer-readable medium having processor instructions stored thereon that, when executed by one or more processors, cause the one or more processors to perform one or more aspects/features of the method described herein. In other embodiments, the present method can be implemented by a system comprising a computer processor and a non-transitory computer-readable storage medium storing instructions that when executed by the computer processor cause the computer processor to perform one or more actions of the method described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To describe the technical solutions in the implementations of the present disclosure more clearly, the following briefly describes the accompanying drawings. The accompanying drawings show merely some aspects or implementations of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

[0012] Fig. 1 is a schematic diagram of a wireless communication system in accordance with one or more implementations of the present disclosure.

[0013] Fig. 2 is a schematic block diagram of a terminal device in accordance with one or more implementations of the present disclosure.

[0014] Fig. 3 is a flowchart of a method in accordance with one or more implementations of the present disclosure.

DETAILED DESCRIPTION

[0015] To describe the technical solutions in the implementations of the present disclosure more clearly, the following briefly describes the accompanying drawings. The accompanying drawings show merely some aspects or implementations of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

[0016] Fig. 1 is a schematic diagram of a wireless communication system 100 in accordance with one or more implementations of the present disclosure. The wireless communication system 100 can implement the methods discussed herein for beam failure detection and beam/link recovery. As shown in Fig. 1 , the wireless communications system 100 includes a network device (or base station/cell) 101. [0017] Examples of the network device 101 include a base transceiver station (Base Transceiver Station, BTS), a NodeB (NodeB, NB), an evolved Node B (eNB or eNodeB), a Next Generation NodeB (gNB or gNode B), a Wireless Fidelity (Wi-Fi) access point (AP), etc. In some embodiments, the network device 101 can include a relay station, an access point, an in-vehicle device, a wearable device, and the like. The network device 101 can include wireless connection devices for communication networks such as: a Global System for Mobile Communications (GSM) network, a Code Division Multiple Access (CDMA) network, a Wideband CDMA (WCDMA) network, an LTE network, a cloud radio access network (Cloud Radio Access Network, CRAN), an Institute of Electrical and Electronics Engineers (IEEE) 802.11-based network (e.g., a Wi-Fi network), an Internet of Things (loT) network, a device-to-device (D2D) network, a next-generation network (e.g., a 5G network), a future evolved public land mobile network (Public Land Mobile Network, PLMN), or the like. A 5G system or network can be referred to as an NR system or network.

[0018] In Fig. 1 , the wireless communications system 100 also includes a terminal device 103. The terminal device 103 can be an end-user device configured to facilitate wireless communication. The terminal device 103 can be configured to wirelessly connect to the network device 101 (via, e.g., via a wireless channel 105) according to one or more corresponding communication protocols/standards.

[0019] The terminal device 103 may be mobile or fixed. The terminal device 103 can be a user equipment (UE), an access terminal, a user unit, a user station, a mobile site, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communications device, a user agent, or a user apparatus. Examples of the terminal device 103 include a modem, a cellular phone, a smartphone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device having a wireless communication function, a computing device or another processing device connected to a wireless modem, an in-vehicle device, a wearable device, an Internet- of-Things (loT) device, a device used in a 5G network, a device used in a public land mobile network, or the like. For illustrative purposes, Fig. 1 illustrates only one network device 101 and one terminal device 103 in the wireless communications system 100. However, in some instances, the wireless communications system 100 can include additional network device 101 and/or terminal device 103. [0020] The terminal device 103 can be configured with a CORESET with index “0” and a search space with “searchSpacelD = 0.” The search space with “searchSpacelD = 0” is associated with the CORESET with index “0.” In such embodiments, the base station 101 can use an MAC/CE activation command to indicate two TCI states for CORESET with index 0. When two TCI states are indicated for CORESET with index “0,” the terminal device 103 can determine a PDCCH monitoring occasion in the search space with “searchSpacelD = 0” based on the indicated TCI states.

[0021] In some embodiments, the terminal device 103 determines a PDCCH monitoring occasion in the search space with “searchSpacelD = 0” based on a first indicated TCI state. In such implementations, the first indicated TCI state can include a CSI-RS resource which is quasi-co-located with a SS/PBCH block. The terminal device 103 can then determine the PDCCH monitoring occasion associated with the SS/PBCH block.

[0022] In some embodiments, the terminal device 103 determines the PDCCH monitoring occasion in the search space with “searchSpacelD = 0” based on a second indicated TCI state. In such cases, the second indicated TCI state can include a CSI- RS resource which is quasi-co-located with a SS/PBCH block. The terminal device 103 can then determine the PDCCH monitoring occasion associated with the SS/PBCH block.

[0023] In some embodiments, the terminal device 103 determines the PDCCH monitoring occasion in the search space with “searchSpacelD = 0” based on one of the indicated TCI states. The one of the indicated TCI states includes a CSI-RS resource which is quasi-co-located with a SS/PBCH block. The terminal device 103 can then determine the PDCCH monitoring occasion associated with the SS/PBCH block. In this example, the terminal device 103 can expect that only one of the indicated TCI states has CSI-RS resource that is quasi-co-located with the SS/PBCH block.

[0024] In some embodiments, the terminal device 103 determines the PDCCH monitoring occasion in the search space with “searchSpacelD = 0” based on one of the indicated TCI states. The one of the indicated TCI states includes a CSI-RS resource which is quasi-co-located with a SS/PBCH block. The terminal device 103 can then determine the PDCCH monitoring occasion associated with the SS/PBCH block. In this example, the terminal device 103 can expect that the indicated TCI states have CSI-RS resources that are quasi-co-located with the same SS/PBCH block.

[0025] In some implementations, if the terminal device 103 is provided with a zero value for “searchSpacelD” in “PDCCH-ConfigCommon” for a “TypeO/OA/2- PDCCH” Common Search Space (CSS) set, or is not provided with a “searchSpaceBroadcast,” the terminal device 103 can determine a monitoring occasions for PDCCH candidates of the TypeO/OA/2- PDCCH CSS set. The terminal device 103 can be provided with a Cell Radio Network Temporary Identity (C-RNTI).

[0026] The terminal device 103 can monitor the PDCCH candidates only at monitoring occasions associated with a SS/PBCH block, where the SS/PBCH block is determined by the most recent of the following: (1) an MAC CE activation command indicating a (target) TCI state of an active Band Width Part (BWP) that includes a CORESET with index “0” where the TCI-state includes a CSI-RS which is quasi-co- located with the SS/PBCH block, or (2) a random-access procedure that is not initiated by a PDCCH order that triggers a contention-free random access procedure.

[0027] In some examples (alternative 1), the MAC CE activation command can indicate two TCI states of the active BWP that includes a CORESET with index “0,” where a first TCI-state includes a CSI-RS which is quasi-co-located with the SS/PBCH block.

[0028] In some examples (alternative 2), the MAC CE activation command can indicate two TCI states of the active BWP that includes a CORESET with index “0,” where a second TCI-state includes a CSI-RS which is quasi-co-located with the SS/PBCH block.

[0029] In some examples (alternative 3), the MAC CE activation command can indicate two TCI states of the active BWP that includes a CORESET with index “0,” where one of these two TCI-states includes a CSI-RS which is quasi-co-located with the SS/PBCH block.

[0030] In some examples (alternative 4), the MAC CE activation command can indicate two TCI states of the active BWP that includes a CORESET with index “0,” where at least one of these two TCI-states includes a CSI-RS which is quasi-co- located with the SS/PBCH block. [0031] In some implementations, the terminal device 103 can report a beam measurement though uplink transmission. When the base station 101 receives a beam measurement report (e.g., correctly received without an error message), the base station 101 can send an acknowledgement for the beam measurement report to the terminal device 103.

[0032] In some examples, the terminal device 103 can send a first beam measurement report to the base station 101. The base station 101 receives the first beam measurement report check if the first beam measurement report is received correctly. If so, the base station 101 can send an acknowledgement to the terminal device 103 to notify the terminal device 103 that the first beam measurement reporting is received correctly.

[0033] In some embodiments, the acknowledgement can be a TCI state indication command. For example, the base station 101 can send a Downlink Control Information (DCI) that indicates a TCI state.

[0034] In some embodiments, the acknowledgement can be a TCI state indication command with a special codepoint. For example, the base station 101 can send a DCI with its TCI field set to a special value. In some examples the special values can be “0s” or “1s” in all of the TCI field.

[0035] In some embodiments, the acknowledgement can be a MAC CE command. In some embodiments, the acknowledgement can be a DCI transmission in a particular PDCCH. For example, a search space can be dedicated for this purpose. Detecting a DCI in that search space can be considered as the foregoing acknowledgement.

[0036] In some implementations, the terminal device 103 can report multiple UE capability value sets. In each value set, the terminal device 103 can report a maximum number of SRS ports. The terminal device 103 can be configured to measure a set of CSI-RS resources and/or SS/PBCH blocks. The terminal device 103 can be requested to report “K” CRIs or SSBRIs (SS/PBCH block resource indicator) in a first beam reporting instance.

[0037] For each of the reported CRIs or SSBRIs, the terminal device 103 can also report its corresponding L1-RSRP measurement or L1-SINR measurement in the first beam reporting instance. For each of the reported CRIs or SSBRIs, the terminal device 103 can also report one index of UE capability value set in the first beam reporting instance. The terminal device 103 can report the first beam reporting instance at slot “n.” After the terminal device 103 sends the first beam reporting instance, the terminal device 103 can expect to receive an acknowledgement from the base station 101 within a time window.

[0038] In a first alternative, the foregoing acknowledgement can be a TCI state activation MAC CE command. In some embodiments, for example, one of the activated TCI states includes one reported CRI or SSBRI as a reference for its uplink transmission. In some embodiments, the foregoing acknowledgement can be a TCI state activation MAC CE command and some TCI state in the activation MAC CE can include one CSI-RS or SSB corresponding to one of the reported CRIs or SSBRIs contained in the beam reporting instance.

[0039] In a second alternative, the foregoing acknowledgement can be a TCI state activation MAC CE command that contains a bit filed to indicate that this MAC CE is an acknowledge (“ACK”) to the first beam reporting instance.

[0040] In a third alternative, the foregoing acknowledgment can be a MAC CE command that contains a bit filed to indicate that this MAC CE is ACK to the first beam reporting instance.

[0041] In a fourth alternative, the foregoing acknowledgment can be a DCI indicating TCI state(s). For example, the acknowledgment can be a DCI indicating a TCI state that includes one CSI-RS resource or SSB corresponding one of the reported CRIs or SSBRIs contained in the first beam reporting instance.

[0042] In a fifth alternative, the foregoing acknowledgment can be a DCI with a TCI bit field set to a special codepoint. For example, the TCI bit field can be set as “0” or “1.” In some embodiments, the foregoing acknowledgment can be a DCI detected from a dedicated PDCCH.

[0043] In a sixth alternative, the foregoing acknowledgement can be a DCI format with CRC (“Cyclic Redundancy Check”) scrambled by C-RNTI or MCS-C-RNTI (Modulation and Coding Scheme Cell RNTI) detected from the PDCCH in a search space provided by “recoverySearchSpaceld.” In such embodiments, the terminal device 103 can monitor the PDCCH in a search space set provided by “recoverySearchSpaceld” for detection of a DCI format with CRC scrambled by C- RNTI or MCS-C-RNTI starting from a time after the terminal device 103 sends the first beam reporting instance (e.g., with a time window).

[0044] If the terminal device 103 can detect such a DCI within the time window, the terminal device 103 can assume the first beam reporting is received correctly by the base station 101.

[0045] In some implementations, the terminal device 103 can be configured with a beam failure recovery. The terminal device 103 detects a beam failure and when the beam failure happens, the terminal device 103 reports a beam failure recovery request message to the base station 101 . The beam failure recovery request message can be sent in the latest PRACH (Physical Random Access Channel) transmission.

[0046] The beam failure recovery request message can include a Reference Signal (RS) index “q _n ew.” After the base station 101 receives the beam failure recovery request message correctly, the terminal device 103 can switch its uplink spatial domain transmit filter on PLISCH, PLICCH and SRS to a spatial domain transmit filter corresponding to the beam failure recovery request.

[0047] The terminal device 103 can also reset its uplink power control parameters for the PLISCH, PLICCH and SRS. The terminal device 103 can be configured with a list of TCI states. Each TCI state can be associated with a first set of power control parameters (including P0, alpha, closed loop index, etc.) for the PLISCH, a second set of power control parameters (including P0, closed loop index, etc.) for the PLISCH and a third set of power control parameters (including P0, alpha, closed loop index, etc.) for the SRS.

[0048] Each TCI state can be associated with a pathloss RS that can be CSI-RS or SSB. The terminal device 103 can be provided with a first default set of power control parameters for PLISCH (Physical Uplink Shared Channel), a second default set of power control parameters for PUCCH (Physical Uplink Control Channel) and a third default set of power control parameters for SRS.

[0049] The terminal device 103 can be requested to apply those default sets of power control parameter if the indicated TCI state is not associated with power control parameters. The terminal device 103 can reset the uplink power control parameters for the PUSCH, PUCCH and SRS according one or more of the following examples. [0050] [A] In one example, the terminal device 103 can reset the uplink power control parameters (P0, alpha, closed loop index, etc.) for the PLISCH to the parameters contained in the first default set of power control parameters.

[0051] [B] In one example, the terminal device 103 can reset the uplink power control parameters (P0, alpha, closed loop index, etc.) for the PLISCH to the parameters associated with one particular TCI state.

[0052] [C] In one example, the terminal device 103 can reset the uplink power control parameters (P0, closed loop index, etc.) for the PLICCH to the parameters contained in the second default set of power control parameters.

[0053] [D] In one example, the terminal device 103 can reset the uplink power control parameters (P0, closed loop index, etc.) for the PLICCH to the parameters associated with one particular TCI state.

[0054] [E] In one example, the terminal device 103 can reset the uplink power control parameters (P0, alpha, closed loop index, etc.) for the SRS to the parameters contained in the third default set of power control parameters.

[0055] [F] In one example, the terminal device 103 can reset the uplink power control parameters (P0, alpha, closed loop index, etc.) for the SRS to the parameters associated with one particular TCI state.

[0056] [G] In some embodiments, a pathloss (PL) RS for PLISCH, PLICCH and

SRS can be a first RS and the first RS is the SS/PBCH selected for the last PRACH transmission or parameter “qnew” contained in a beam failure recovery request message.

[0057] [H] In some embodiments, the pathloss RS for PLISCH, PLICCH or SRS can be a second RS. The second RS can be configured as a default PL RS for PUSCH, PUCCH or SRS, respectively.

[0058] In some implementations, the terminal device 103 can determine a spatial domain transmission (Tx) filter for PUSCH, PUCCH and SRS to be the one corresponding to the latest PRACH transmission or “qnew” contained in a beam failure recovery request message.

[0059] In some embodiments, the terminal device 103 can determine power control parameters for PUSCH, PUCCH and SRS as described below. [0060] [1] In some examples, the power control parameters for PLISCH can be power control parameters for PLISCH that are associated with a TCI state which includes a first RS as a reference for uplink spatial domain transmit filter. The first RS is the SS/PBCH block index selected for the last PRACH transmission, or parameter “qnew” contained in a beam failure recovery request message. The pathloss RS can be the PL RS associated with the TCI state.

[0061] [2] In some examples, the power control parameters for PLICCH can be power control parameters for PLICCH that are associated with a TCI state which includes a first RS as a reference for uplink spatial domain transmit filter. The first RS is the SS/PBCH block index selected for the last PRACH transmission, or parameter “qnew” contained in the beam failure recovery request message. The pathloss RS can be the PL RS associated with the TCI state.

[0062] [3] In some examples, the power control parameters for SRS can be power control parameters for SRS that are associated with a TCI state which includes a first RS as a reference for uplink spatial domain transmit filter. The first RS is the SS/PBCH block index selected for the last PRACH transmission, or parameter “qnew” contained in beam failure recovery request message. The pathloss RS is the PL RS associated with the TCI state.

[0063] Fig. 2 is a schematic block diagram of a terminal device 203 (e.g., which can implement the methods discussed herein) in accordance with one or more implementations of the present disclosure. As shown, the terminal device 203 includes a processing unit 210 (e.g., a DSP, a CPU, a GPU, etc.) and a memory 220. The processing unit 210 can be configured to implement instructions that correspond to the methods discussed herein and/or other aspects of the implementations described above. It should be understood that the processor 210 in the implementations of this technology may be an integrated circuit chip and has a signal processing capability. During implementation, the steps in the foregoing method may be implemented by using an integrated logic circuit of hardware in the processor 210 or an instruction in the form of software. The processor 210 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, and a discrete hardware component. The methods, steps, and logic block diagrams disclosed in the implementations of this technology may be implemented or performed. The general-purpose processor 210 may be a microprocessor, or the processor 210 may be alternatively any conventional processor or the like. The steps in the methods disclosed with reference to the implementations of this technology may be directly performed or completed by a decoding processor implemented as hardware or performed or completed by using a combination of hardware and software modules in a decoding processor. The software module may be located at a random-access memory, a flash memory, a readonly memory, a programmable read-only memory or an electrically erasable programmable memory, a register, or another mature storage medium in this field. The storage medium is located at a memory 220, and the processor 210 reads information in the memory 220 and completes the steps in the foregoing methods in combination with the hardware thereof.

[0064] It may be understood that the memory 220 in the implementations of this technology may be a volatile memory or a non-volatile memory, or may include both a volatile memory and a non-volatile memory. The non-volatile memory may be a readonly memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory may be a random-access memory (RAM) and is used as an external cache. For exemplary rather than limitative description, many forms of RAMs can be used, and are, for example, a static random-access memory (SRAM), a dynamic random-access memory (DRAM), a synchronous dynamic random-access memory (SDRAM), a double data rate synchronous dynamic random-access memory (DDR SDRAM), an enhanced synchronous dynamic random-access memory (ESDRAM), a synchronous link dynamic random-access memory (SLDRAM), and a direct Rambus randomaccess memory (DR RAM). It should be noted that the memories in the systems and methods described herein are intended to include, but are not limited to, these memories and memories of any other suitable type. In some embodiments, the memory may be a non-transitory computer-readable storage medium that stores instructions capable of execution by a processor.

[0065] Fig. 3 is a flowchart of a method 300 in accordance with one or more implementations of the present disclosure. The method 300 can be implemented by a system (such as the wireless communications system 100). For example, the method 300 may also be implemented by the terminal device 103.

[0066] The method 300 includes, at block 301 , receiving, by the terminal device, configuration information for a control resource set. At block 303, the method 300 continues by configuring the terminal device based on the control resource set, wherein the terminal device is configured with an index and a search space identification for the control resource set.

[0067] In some embodiments, the control resource set is a special control resource set “CORESET#0.” In some embodiments, the index includes a value “0.”

[0068] At block 305, the method 300 continues by receiving, by the terminal device, an activation command to indicate two or more transmission configuration indicator (TCI) states with the index.

[0069] At block 307, the method 300 continues by determining, by the terminal device, a physical downlink control channel (PDCCH) monitoring occasion in a search space identified by the search space identification based on at least one of the indicated TCI states. In some embodiments, the search space is identified by setting the search space identification to a value “0.”

[0070] In some embodiments, the method 300 can include determining, by the terminal device, the PDCCH monitoring occasion based on a first indicated TCI state of the indicated TCI states. In some embodiments, the first indicated TCI state can include a channel state information reference signal (CSI-RS) resource, and the CSI- RS resource can be quasi-co-located with a synchronization signal (SS) I physical broadcast channel (PBCH) block.

[0071] In some embodiments, the method 300 can include determining, by the terminal device, the PDCCH monitoring occasion based on a second indicated TCI state of the indicated TCI states. In some embodiments, the second indicated TCI state can include a CSI-RS resource, and the CSI-RS resource can be quasi-co- located with a SS/PBCH block.

[0072] In some embodiments, the search space identification is in a “PDCCH- ConfigCommon” field. In some embodiments, the control resource set includes a “Type0/0A/2-PDCCH” Common Search Space (CSS) set. [0073] In some embodiments, the activation command includes a Media Access Control (MAC) Control Element (CE) activation command. In some implementations, the MAC CE activation command indicates a target TCI state of the two or more TCI states, and wherein the target TCI state indicates an active Band Width Part (BWP). In some embodiments, the MAC CE activation command indicates a target TCI state of the two or more TCI states, and the target TCI state indicates a CSI-RS resource quasi-co-located with a SS/PBCH block.

[0074] In some embodiments, the method 300 can further include transmitting, by the terminal device, a beam measurement report to a base station. In some embodiments, the method 300 can further include receiving, by the terminal device, an acknowledgement from the base station indicating that the beam measurement report is received within a predetermined time window. If the beam measurement report is received within a predetermined time window, the base station can determine that the beam measurement report is received is correctly received.

[0075] In some embodiments, the acknowledgement can be a TCI state indication command. In some embodiments, the acknowledgement can be MAC CE command.

[0076] In some embodiments, the index can include a first value. In some embodiments, the search space can be identified by setting the search space identification to a second value. In some embodiments, the first value includes “0,” and the second value includes “0.”

ADDITIONAL CONSIDERATIONS

[0077] The above Detailed Description of examples of the disclosed technology is not intended to be exhaustive or to limit the disclosed technology to the precise form disclosed above. While specific examples for the disclosed technology are described above for illustrative purposes, various equivalent modifications are possible within the scope of the described technology, as those skilled in the relevant art will recognize. For example, while processes or blocks are presented in a given order, alternative implementations may perform routines having steps, or employ systems having blocks, in a different order, and some processes or blocks may be deleted, moved, added, subdivided, combined, and/or modified to provide alternative implementations or subcombinations. Each of these processes or blocks may be implemented in a variety of different ways. Also, while processes or blocks are at times shown as being performed in series, these processes or blocks may instead be performed or implemented in parallel, or may be performed at different times. Further, any specific numbers noted herein are only examples; alternative implementations may employ differing values or ranges.

[0078] In the Detailed Description, numerous specific details are set forth to provide a thorough understanding of the presently described technology. In other implementations, the techniques introduced here can be practiced without these specific details. In other instances, well-known features, such as specific functions or routines, are not described in detail in order to avoid unnecessarily obscuring the present disclosure. References in this description to “an implementation/embodiment,” “one implementation/embodiment,” or the like mean that a particular feature, structure, material, or characteristic being described is included in at least one implementation of the described technology. Thus, the appearances of such phrases in this specification do not necessarily all refer to the same implementation/embodiment. On the other hand, such references are not necessarily mutually exclusive either. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more implementations/embodiments. It is to be understood that the various implementations shown in the figures are merely illustrative representations and are not necessarily drawn to scale.

[0079] Several details describing structures or processes that are well-known and often associated with communications systems and subsystems, but that can unnecessarily obscure some significant aspects of the disclosed techniques, are not set forth herein for purposes of clarity. Moreover, although the following disclosure sets forth several implementations of different aspects of the present disclosure, several other implementations can have different configurations or different components than those described in this section. Accordingly, the disclosed techniques can have other implementations with additional elements or without several of the elements described below.

[0080] Many implementations or aspects of the technology described herein can take the form of computer- or processor-executable instructions, including routines executed by a programmable computer or processor. Those skilled in the relevant art will appreciate that the described techniques can be practiced on computer or processor systems other than those shown and described below. The techniques described herein can be implemented in a special-purpose computer or data processor that is specifically programmed, configured, or constructed to execute one or more of the computer-executable instructions described below. Accordingly, the terms “computer” and “processor” as generally used herein refer to any data processor. Information handled by these computers and processors can be presented at any suitable display medium. Instructions for executing computer- or processorexecutable tasks can be stored in or on any suitable computer-readable medium, including hardware, firmware, ora combination of hardware and firmware. Instructions can be contained in any suitable memory device, including, for example, a flash drive and/or other suitable medium.

[0081] The term “and/or” in this specification is only an association relationship for describing the associated objects, and indicates that three relationships may exist, for example, A and/or B may indicate the following three cases: A exists separately, both A and B exist, and B exists separately.

[0082] These and other changes can be made to the disclosed technology in light of the above Detailed Description. While the Detailed Description describes certain examples of the disclosed technology, as well as the best mode contemplated, the disclosed technology can be practiced in many ways, no matter how detailed the above description appears in text. Details of the system may vary considerably in its specific implementation, while still being encompassed by the technology disclosed herein. As noted above, particular terminology used when describing certain features or aspects of the disclosed technology should not be taken to imply that the terminology is being redefined herein to be restricted to any specific characteristics, features, or aspects of the disclosed technology with which that terminology is associated. Accordingly, the invention is not limited, except as by the appended claims. In general, the terms used in the following claims should not be construed to limit the disclosed technology to the specific examples disclosed in the specification, unless the above Detailed Description section explicitly defines such terms.

[0083] A person of ordinary skill in the art may be aware that, in combination with the examples described in the implementations disclosed in this specification, units and algorithm steps may be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on particular applications and design constraint conditions of the technical solutions. A person skilled in the art may use different methods to implement the described functions for each particular application, but it should not be considered that the implementation goes beyond the scope of this application.

[0084] Although certain aspects of the invention are presented below in certain claim forms, the applicant contemplates the various aspects of the invention in any number of claim forms. Accordingly, the applicant reserves the right to pursue additional claims after filing this application to pursue such additional claim forms, in either this application or in a continuing application.