Rate matching for Layer 1 (L1) or Layer 2 (L2) mobility protocols

Abstract

Certain aspects of the subject matter described in the present disclosure may be implemented in a method for wireless communication by a user equipment (UE). The method generally includes: receiving layer 1 (L1) or layer 2 (L2) signaling indicating one or more selected physical cell identifiers (PCIs) from a set of PCIs for serving the UE; receiving an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel to be received via one or more cells associated with the one or more selected PCIs; determining a configuration for rate matching based on the rule; and receiving the channel via the one or more cells in accordance with the determination.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATION(S)

[0002] This application claims priority to U.S. Application No. 17 / 234,406, filed on April 19, 2021, which claims the benefit of and priority to U.S. Provisional Application No. 63 / 013,491, filed on April 21, 2020, which are hereby assigned to the assignee of this application and are hereby expressly incorporated herein by reference in their entireties as if fully set forth below and for all applicable purposes. Technical Field

[0003] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for rate matching. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SCFDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name a few.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate within municipal, national, regional, and even global boundaries. New radio (NR) (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) on downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0006] As the demand for mobile broadband access continues to increase, there is a need for further improvements to NR and LTE technologies. These improvements should also apply to other multiple access technologies and the telecommunication standards that employ them. Summary of the invention

[0007] The systems, methods, and devices of the present disclosure each have several aspects, no one of which is solely responsible for its desirable attributes. After considering this discussion, and particularly after reading the section entitled "Detailed Description," one will understand how the features of the present disclosure provide advantages including improved rate matching techniques.

[0008] Certain aspects of the subject matter described in the present disclosure may be implemented in a method for wireless communication by a user equipment (UE). The method generally includes: receiving low-layer signaling indicating one or more selected physical cell identifiers (PCIs) from a set of PCIs for serving the UE; receiving an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel, the channel to be received via one or more cells associated with the one or more selected PCIs; determining a configuration for the rate matching based on the rule; and receiving the channel via the one or more cells in accordance with the determination.

[0009] Certain aspects of the subject matter described in the present disclosure may be implemented in a method for wireless communication by a base station (BS). The method generally includes: transmitting to a UE an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel, the channel to be transmitted via one or more cells associated with one or more selected PCIs from a set of PCIs, the one or more selected PCIs configured using low layer signaling to serve the UE; generating the channel according to the configuration for rate matching; and transmitting the channel to the UE.

[0010] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a UE. The apparatus generally includes a memory and a processor, the memory and the processor being configured to: receive low-layer signaling indicating one or more selected PCIs from a set of PCIs for serving the UE; receive an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel, the channel to be received via one or more cells associated with the one or more selected PCIs; determine a configuration for rate matching based on the rule; and receive the channel via the one or more cells according to the determination.

[0011] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a BS. The apparatus generally includes a memory and a processor, the memory and the processor being configured to: transmit to a UE an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel, the channel to be transmitted via one or more cells associated with one or more selected PCIs from a set of PCIs, the one or more selected PCIs configured using low layer signaling to serve the UE; generate the channel according to the configuration for rate matching; and transmit the channel to the UE.

[0012] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a UE. The apparatus generally includes: a component for receiving low-layer signaling indicating one or more selected PCIs from a set of PCIs for serving the UE; a component for receiving an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel, the channel to be received via one or more cells associated with the one or more selected PCIs; a component for determining a configuration for rate matching based on the rule; and a component for receiving the channel via the one or more cells based on the determination.

[0013] Certain aspects of the subject matter described in the present disclosure may be implemented in an apparatus for wireless communication by a BS. The apparatus generally includes: a component for transmitting to a UE an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel, the channel to be transmitted via one or more cells associated with one or more selected PCIs from a set of PCIs, the one or more selected PCIs configured using low layer signaling to serve the UE; a component for generating the channel according to the configuration for rate matching; and a component for transmitting the channel to the UE.

[0014] Certain aspects of the subject matter described in the present disclosure may be implemented in a computer-readable medium having instructions stored thereon, the instructions causing a UE to: receive low layer signaling indicating one or more selected PCIs from a set of PCIs for serving the UE; receive an indication of rules for determining a configuration for rate matching around unavailable resources of a channel, the channel to be received via one or more cells associated with the one or more selected PCIs; determine a configuration for rate matching based on the rules; and receive the channel via the one or more cells based on the determination.

[0015] Certain aspects of the subject matter described in the present disclosure may be implemented in a computer-readable medium having instructions stored thereon, the instructions causing a BS to: transmit to a UE an indication of rules for determining a configuration for rate matching around unavailable resources of a channel, the channel to be transmitted via one or more cells associated with one or more selected PCIs from a set of PCIs, the one or more selected PCIs configured using low layer signaling to serve the UE; generate the channel according to the configuration for rate matching; and transmit the channel to the UE.

[0016] To achieve the foregoing and related ends, one or more aspects include features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are only indicative of several of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order that the manner in which the above-mentioned features of the present disclosure are understood in detail, a more detailed description of what has been briefly summarized above may be made by reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the description may admit of other equally effective aspects.

[0018] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0019] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0020] Figure 3 is an example frame format for New Radio (NR) in accordance with certain aspects of the present disclosure.

[0021] Figure 4 is a flow diagram illustrating example operations for wireless communications by a BS in accordance with certain aspects of the present disclosure.

[0022] Figure 5 is a flow diagram illustrating example operations for wireless communications by a UE in accordance with certain aspects of the present disclosure.

[0023] Fig. 6A A communication protocol for Layer 1 (L1) / Layer 2 (L2) inter-cell mobility with rate matching in accordance with certain aspects of the present disclosure is shown.

[0024] Figure 6BNon-overlapping resources for transmissions on synchronization signal blocks (SSBs) and channels are illustrated in accordance with certain aspects of the present disclosure.

[0025] Figure 7 A communication device according to aspects of the present disclosure is shown that may include various components configured to perform operations for carrying out the techniques disclosed herein.

[0026] Figure 8 A communication device according to aspects of the present disclosure is shown that may include various components configured to perform operations for carrying out the techniques disclosed herein.

[0027] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized in other aspects without specific recitation. DETAILED DESCRIPTION

[0028] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for rate matching. As used herein, rate matching around one or more resources generally refers to skipping the decoding of the (one or more) resources. Certain aspects of the present disclosure provide techniques for rate matching for layer 1 (L1) or layer 2 (L2) inter-cell mobility implementations. For example, L1 or L2 signaling such as downlink control information (DCI) or media access control (MAC)-control elements (CE) can be used to configure one or more selected PCIs for user equipment (UE) services in a set of physical cell identifiers (PCIs). Resources for transmitting one or more SSBs (e.g., a PCI, a subset of PCIs, or a whole set of PCIs) can overlap with resources for transmitting and receiving on a channel, thereby causing interference when decoding the channel. Some aspects of the present disclosure provide techniques for reducing such interference. For example, in some aspects, a UE may be configured with rules that allow rate matching around an SSB when attempting to decode a transmission on a channel. Various rules may be provided for the UE to determine resources around which to rate match when decoding a channel (e.g., a control channel or a data channel). Depending on the rate matching rules selected by the UE, the UE may rate match around channel resources that overlap with the transmission of (one or more) synchronization signal blocks (SSBs) of one PCI, a subset of PCIs, or an entire set of PCIs, as described in more detail herein.

[0029] The following description provides an example of rate matching in a communication system. The functions and arrangements of the elements discussed may be changed. Various examples may omit, replace or add various processes or components as appropriate. For example, the method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, the features described in some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or a method may be practiced. In addition, the scope of the present disclosure is intended to cover such a device or method, that is, the device or method is practiced using other structures, functions or structures and functions in addition to or as a supplement to the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of the claims. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described as "exemplary" herein need not necessarily be interpreted as being preferred or advantageous over other aspects.

[0030] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, frequency channel, tone, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs.

[0031] The techniques described herein can be used for various wireless networks and radio technologies. Although terms commonly associated with 3G, 4G, and / or new radio (e.g., 5G NR) wireless technologies may be used herein to describe various aspects, various aspects of the present disclosure may be applied to other communication systems based on generations.

[0032] NR access can support various wireless communication services, such as enhanced mobile broadband (eMBB) for wide bandwidth (e.g., 80MHz or higher), millimeter wave (mmW) for high carrier frequency (e.g., 25GHz or higher), massive machine type communication MTC (mMTC) for non-backward compatible MTC technology, and / or mission critical ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet corresponding quality of service (QoS) requirements. In addition, these services can coexist in the same subframe. NR supports beamforming, and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. The MIMO configuration in the downlink (DL) can support up to 8 transmit antennas, with multi-layer DL transmission of up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE can be supported. Aggregation of multiple cells up to 8 serving cells can be supported.

[0033] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network). Figure 1 As shown, the wireless communication network 100 may communicate with a core network 132. The core network 132 may communicate with one or more base stations (BSs) 110 and / or UEs 120 in the wireless communication network 100 via one or more interfaces.

[0034] like Figure 1 As shown, the wireless communication network 100 may include several BSs 110a-z (each also individually referred to as BS 110 or collectively referred to as BS 110 in this document) and other network entities. BS 110 may provide communication coverage for a specific geographic area, which is sometimes referred to as a "cell", which may be fixed or mobile depending on the positioning of the mobile BS 110. In some examples, BS 110 may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless communication network 100 via various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more cells. A network controller 130 may be coupled to a set of BSs 110 and provide coordination and control (e.g., via backhaul) for these BSs 110.

[0035] Multiple TRPs 110s-v may be implemented, which may be included for each cell, or for multiple cells. For example, each cell may have multiple TRPs to improve communication coverage. The TRPs may be located at different locations, and each TRP may have a different PCI. For example, the PCI for each TRP may be carried by a synchronization signal block (SSB) transmitted from the corresponding TRP. Each TRP may indicate to the UE the resources for SSB transmission of the PCI associated with the cell.

[0036] BS 110 communicates with UEs 120a-y (also individually or collectively referred to herein as UE 120) in the wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE 120 may be fixed or mobile. The wireless communication network 100 may also include a relay station (e.g., relay station 110r), also referred to as a relay, etc., that receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0037] According to certain aspects, BS 110 and UE 120 may be configured for rate matching. Figure 1 As shown, BS 110a includes a rate matching manager 112. According to certain aspects of the present disclosure, rate matching manager 112 may be configured to select a rule for rate matching and indicate the selected rule to the UE. Figure 1 As shown, UE 120a includes rate matching manager 122. According to certain aspects of the present disclosure, rate matching manager 122 may be configured to select a rule for rate matching and decode a data channel according to the rate matching rule.

[0038] exist Figure 1In FIG. 1 , a solid line with double arrows indicates desired transmissions between a UE and a serving BS, which is a BS designated to serve the UE on DL and / or uplink (UL). A thin dashed line with double arrows indicates interfering transmissions between a UE and a BS.

[0039] Figure 2 BS 110a and UE 120a (eg, Figure 1 The present invention provides example components of the wireless communication network 100 of the present invention, which may be used to implement various aspects of the present disclosure.

[0040] At BS 110a, a transmit processor 220 may receive data from a data source 212 and control information from a controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. A medium access control (MAC)-control element (MAC-CE) is a MAC layer communication structure that may be used for control command exchange between wireless nodes. The MAC-CE may be carried in a shared channel, such as a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), or a physical sidelink shared channel (PSSCH).

[0041] The processor 220 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a channel state information reference signal (CSI-RS). The transmission (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and may provide an output symbol stream to a modulator (MOD) in a transceiver 232a-232t. Each modulator may process a corresponding output symbol stream (e.g., for orthogonal frequency division multiplexing (OFDM) etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a DL signal. The DL signals from the modulators in the transceivers 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0042] At UE 120a, antennas 252a to 252r may receive DL signals from BS 110a and may provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator in transceivers 254a-254r may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain received symbols from all demodulators in transceivers 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to data sink 260, and provide decoded control information to controller / processor 280.

[0043] On the UL, at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a PUSCH) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (RS), such as for a sounding reference signal (SRS). The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by a demodulator in a transceiver 254a-254r (e.g., for SC-FDM, etc.), and transmitted to the BS 110a. At the BS 110a, the UL signal from the UE 120a may be received by the antenna 234, processed by a modulator in the transceiver 232, detected by a MIMO detector 236 (if applicable), and further processed by a receive processor 238 to obtain decoded data and control information transmitted by the UE 120a. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240 .

[0044] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.A scheduler 244 may schedule UEs for data transmission on the DL and / or UL.

[0045] The antenna 252, processors 266, 258, 264 and / or controller / processor 280 of the UE 120a and / or the antenna 234, processors 220, 230, 238 and / or controller / processor 240 of the BS 110a may be used to perform the various techniques and methods described herein. Figure 2As shown, the controller / processor 240 of BS 110a has a rate matching manager 112 according to certain aspects described herein. Figure 2 As shown, the controller / processor 280 of the UE 120a has a rate matching manager 122, in accordance with certain aspects described herein. Although shown at the controller / processor level, other components of the UE 120a and BS 110a may be used to perform the operations described herein.

[0046] NR can use OFDM with cyclic prefix (CP) on UL and DL. NR can support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) can divide the system bandwidth into multiple orthogonal subcarriers, which are also commonly called tones, frequency bands, etc. Each subcarrier can be modulated with data. The modulation symbols are transmitted in the frequency domain using OFDM and in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers can depend on the system bandwidth. The minimum resource allocation called a resource block (RB) can be 12 consecutive subcarriers. The system bandwidth can also be divided into subbands. For example, a subband can cover multiple RBs. NR can support a basic subcarrier spacing (SCS) of 15KHz, and other SCSs can be defined relative to the basic SCS, such as 30kHz, 60kHz, 120kHz, 240kHz, etc.

[0047] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified with the frequency range names FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz). It should be understood that FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles, even though a portion of FR1 is greater than 6 GHz. Similar naming issues sometimes arise with FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, even though FR2 is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) that is identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0048] Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR research has identified operating bands for these mid-band frequencies as the frequency range designation FR3 (7.125 GHz to 24.25 GHz). Frequency bands within the FR3 range may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend the characteristics of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend the operation of 5G NR above 52.6 GHz. For example, three higher operating frequency bands have been identified as the frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0049] In view of the above, unless otherwise explicitly stated, it should be understood that the term "sub-6 GHz" and the like (if used herein) can broadly refer to such frequencies: can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that the term "millimeter wave" and the like (if used herein) can broadly refer to such frequencies: can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1 and / or within FR5, or can be within the EHF band.

[0050] Figure 3 300 is a diagram showing an example of a frame format 300 for NR. The transmission timeline of each of DL and UL can be divided into radio frame components. Each radio frame can have a predetermined duration (e.g., 10ms) and can be divided into 10 subframes, each of which is 1ms and indexed from 0 to 9. Each subframe can include a variable number of slots (e.g., 1, 2, 4, 8, 16, ... slots) depending on the SCS. Each slot can include a variable number of symbol periods (e.g., 7 or 14 symbols) depending on the SCS. The symbol period in each slot can be assigned an index. A microslot, which can be referred to as a subslot structure, refers to a transmission time interval (TTI) having a duration less than a slot (e.g., 2, 3 or 4 symbols). Each symbol in a slot can indicate a link direction (e.g., DL, UL, or flexible) for data transmission, and the link direction of each subframe can be dynamically switched. The link direction can be based on the slot format. Each slot can include DL / UL data and DL / UL control information.

[0051] Example Techniques for Rate Matching for Layer 1 (L1) / Layer 2 (L2) Inter-Cell Mobility

[0052] As used herein, a base station (BS) may support one or more cells, where a cell refers to a communication coverage area. In some embodiments, each cell (e.g., Figure 1 The cell 102a shown in FIG. 1 may be used to serve a user equipment (UE) and has a single physical layer (PHY) cell ID (PCI). The PCI may be carried (e.g., indicated) by a synchronization signal block (SSB) from the cell. As used herein, the PCI may be from a serving cell (e.g., Figure 1 102a) or a non-serving cell (e.g., cell 102b may be a cell 102b that serves UE 120 ... Figure 1 The PCI may be indicated by an SSB transmitted on a serving or non-serving cell. For reception of a channel in a cell (e.g., a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH)), a user equipment (UE) may perform rate matching around unavailable resources indicated for the cell. As used herein, rate matching around resources generally refers to skipping decoding of the resources. In other words, certain resources may be indicated as unavailable, and if the indicated unavailable resources overlap with resources used for a channel, the UE may perform rate matching (e.g., not receive or decode) around the unavailable or overlapping resources when receiving the channel.

[0053] In some cases, the UE may determine the configuration for rate matching based on an indication from a base station (BS). For example, for a PDSCH scheduled by a control channel (e.g., a physical downlink control channel (PDCCH)) scrambled using system information (SI)-radio network temporary identifier (RNTI), and in the case where the SI indicator in the downlink control information (DCI) (e.g., on the PDCCH) is set to 0, for the purpose of performing rate matching, the UE may determine that no synchronization signal blocks (SSBs) are transmitted in the resource elements (REs) of the PDSCH. In other words, there may be no SSBs in the assumed PDSCH, so in this case, the UE may not perform any rate matching around the SSBs.

[0054] In some cases, for a PDSCH scheduled by a PDCCH scrambled using an SI-RNTI, and a system information indicator in the DCI (e.g., in a system information block (SIB)) is set to 1, or when the PDCCH is scrambled using a random access (RA)-RNTI, a message B (MsgB)-RNTI, a paging (P)-RNTI, or a temporary cell (TC)-RNTI, the UE may assume that the PDSCH REs that overlap with the SSBs indicated by the BS (e.g., in ssb-PositionsInBurst) are unavailable. In other words, a portion of the REs used for the PDSCH may overlap with the SSBs. The UE may determine the location of the SSB based on an indication from the BS. For example, the BS may provide an indication (e.g., ssb-PositionsInBurst) in the SSB for the UE, thereby indicating to the UE the location of the SSB from the UE, and when the UE receives the PDSCH, the UE may perform rate matching around it. That is, the UE may not decode the SSBs that are considered to be unavailable resources in the scheduled resource pool of the PDSCH.

[0055] For a PDSCH scheduled by a PDCCH scrambled using a cell (C)-RNTI, a modulation and coding scheme (MCS)-C-RNTI, a configuration scheduling (CS)-RNTI, or for a PDSCH with semi-persistent scheduling (SPS) (e.g., a PDSCH configured using SPS), the UE may assume that the PDSCH REs overlapping the SSB indicated in ssb-PositionsInBurst are not available, and that the PDSCH REs corresponding to the resources configured or dynamically indicated by the rate matching mode indicator are not available. The rate matching mode indicator may be indicated by the BS to the UE and may include a rate matching mode with resource block (RB) symbol level granularity. In other words, the rate matching mode may be indicated using an RB level component in the frequency domain and a symbol level component in the time domain. Examples of rate matching modes indicated with RB symbol level granularity may include rateMatchPatternGroup1 or rateMatchPatternGroup2, which may be indicated in the DCI, or (one or more) RateMatchPattern configured by radio resource control (RRC) messaging / signaling. For example, if the corresponding bit of the rate matching indicator field of the DCI scheduling PDSCH is equal to 1, rateMatchPatternGroup1 or rateMatchPatternGroup2 can be a list of RB and symbol-level resource set indices, forming a union of resource sets that are dynamically unavailable for PDSCH. The RBs and symbols indicated by the rate matching pattern are determined to be unavailable in the scheduling resource pool for PDSCH, and rate matching is performed when PDSCH is received.

[0056] In certain aspects, the rate matching pattern indicator may include a rate matching pattern with RE-level granularity. Typically, the rate matching pattern indicated with RE-level granularity indicates unavailable resources for reference signals (RS) in a resource pool of a channel. For example, the rate matching pattern that may be indicated with RE-level granularity may include an indication of RE positions for cell-specific reference signals (CRS), such as RateMatchingPatternLTE-CRS (e.g., indicating a resource pattern for CRS for LTE), CRSPatternList-CORESETPoolIndex (e.g., indicating a resource pattern for multiple transmission reception points (multiple TRPs) transmissions coexisting with CRS for LTE), CRSPatternList-r16 (e.g., a CRS pattern for the 16th release of the New Radio (NR) standard). The rate matching mode that can be indicated with RE level granularity can also include periodic (P), semi-persistent (SP) or aperiodic (AP) zero power (ZP)-channel state information (CSI)-reference signal (RS) resources (e.g., P / ZP / AP ZP-CSI-RS resources) that can be configured, activated or triggered by the BS. For example, the BS can configure a ZP-CSI-RS indicating unavailable resources so that the UE avoids using those resources that may otherwise interfere with other wireless nodes for transmission.

[0057] Certain aspects of the present disclosure provide techniques for rate matching of inter-cell mobility protocols. For example, multiple TRPs (e.g., Figure 1 110s-v), multiple TRPs may be included for each cell, or for multiple cells. For example, each cell may have multiple TRPs to improve communication coverage. The TRPs may be located at different locations, and each TRP may have a different PCI.

[0058] At each time, the UE may be served by a subset of PCIs of a serving cell. Over time, the subset of PCIs of a serving cell serving the UE may change, as indicated to the UE via DCI or a medium access control (MAC)-control element (CE) (e.g., layer 1 (L1) or layer 2 (L2) signaling). In other words, instead of using higher level signaling to achieve inter-cell mobility (e.g., mobility from one PCI to another PCI), L1 or L2 signaling may be used to indicate such mobility (e.g., indicating a subset of PCIs serving the UE).

[0059] In some cases, the UE may be configured with a set of serving cells, with one PCI for each serving cell. The UE may be configured to perform measurements of L1 metrics for each serving cell in the group. The L1 metrics may include L1 reference signal received power (RSRP), signal to interference plus noise ratio (SINR), or reference signal received quality (RSRQ). At each time, the UE may be served by a subset of the serving cell group, which may change from time to time via DCI or MAC-CE, as described herein. The L1 metrics may be signaled to the BS via L1 reports, allowing the BS to decide a subset of the serving cell group based on the L1 reports from the UE. The L1 reports may be signaled to some selected serving cells or anchor serving cells in the group.

[0060] As described herein, a subset of (one or more) PCIs in a set of PCIs may be configured to serve a UE, and the subset may be changed using L1 / L2 signaling, as described herein. The subset of (one or more) PCIs may be referred to herein as "one or more selected PCIs." Certain aspects of the present disclosure generally relate to techniques for a UE to determine unavailable resources for rate matching when the UE is served by a PCI configured for L1 / L2 inter-cell mobility, in which the subset of (one or more) PCIs serving a particular UE may be changed faster than in conventional inter-cell mobility implementations.

[0061] Figure 4 4 is a flow diagram illustrating example operations 400 for wireless communications, in accordance with certain aspects of the present disclosure. Operations 400 may be performed, for example, by a BS (eg, such as BS 110a in wireless communication network 100).

[0062] Operation 400 may be implemented as a processor on one or more processors (e.g., Figure 2 In addition, the software components executed and run on the controller / processor 240 of the system can be transmitted through one or more antennas (e.g., Figure 2 The antenna 234 of the BS enables the BS to transmit and receive signals in operation 400. In some aspects, signal transmission and / or reception by the BS can be implemented via a bus interface of one or more processors (e.g., controller / processor 240) to obtain and / or output signals.

[0063] Operation 400 may begin at block 405 by the BS transmitting to the UE an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel. The channel may be a PDCCH or a PDSCH. The channel may be transmitted via one or more cells associated with one or more selected PCIs in a set of PCIs configured using low-layer (e.g., layer 1 or layer 2) signaling to serve the UE. For example, a DCI or MAC-CE may be transmitted to the UE via a PCI in the set of PCIs, indicating to the UE one or more PCIs selected for the UE. At block 410, the BS generates a channel according to the configuration for rate matching. At block 415, the BS transmits the channel to the UE.

[0064] Figure 5 5 is a flow diagram illustrating example operations 500 for wireless communications, in accordance with certain aspects of the present disclosure. Operations 500 may be performed, for example, by a UE (eg, UE 120a in wireless communication network 100).

[0065] Operation 500 may be a supplementary operation of operation 400 performed by the UE on the BS. Operation 500 may be implemented as a processor (eg, Figure 2 In addition, the software components executed and run on the controller / processor 280 of the system can be transmitted through one or more antennas (e.g., Figure 2 The antenna 252 of the UE transmits and receives signals through the UE in operation 500. In some aspects, the signal transmission and / or reception by the UE can be implemented via a bus interface of one or more processors (e.g., controller / processor 280) to obtain and / or output signals.

[0066] Operation 500 may begin at box 505 by the UE receiving low layer signaling (e.g., DCI or MAC-CE) indicating one or more selected PCIs from a set of PCIs for serving the UE. For example, the set of PCIs may be associated with multiple TRPs of a cell, or the set of PCIs may be associated with multiple cells. In box 510, the UE receives an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel to be received via one or more cells associated with the one or more selected PCIs. The channel may be a PDCCH or a PDSCH. In box 515, the UE determines a configuration for rate matching based on the rule. In box 520, the UE receives the channel via the one or more cells based on the determination.

[0067] For example, in some aspects, the indication of the rule may include an indication that the resources of the channel are assumed to not overlap with the SSB transmissions of the group of PCIs. In this case, determining the configuration for rate matching at block 515 may include avoiding rate matching around unavailable resources.

[0068] In certain aspects, the UE may also receive signaling indicating resources allocated for SSB transmission of the set of PCIs. The indication of the rule may include an indication that at least a portion of the channel resources overlapping with the SSB transmission of the set of PCIs are unavailable resources. Thus, determining a configuration for rate matching at block 515 may include determining to perform rate matching around unavailable resources or around resources of the channel overlapping with the SSB transmission of the set of PCIs.

[0069] In some aspects, the indication of the rule may include an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions for one or more selected PCIs in the set of PCIs are unavailable resources and that the resources for the channel do not overlap with the SSB transmissions of the unselected PCIs in the set of PCIs. Thus, determining the configuration for rate matching at block 515 may include determining to rate match around unavailable resources or around channel resources overlapping with the SSB transmissions for the one or more selected PCIs.

[0070] In certain aspects, the UE may also receive an indication of resources scheduled for a channel via a cell associated with a PCI in one or more selected PCIs. In this case, the indication of the rule may include an indication that at least a portion of the channel resources that overlap with at least one of the SSB transmissions performed via the cell that schedules the resources for the channel are unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs. Thus, determining a configuration for rate matching at block 515 may include determining to perform rate matching around unavailable resources or around resources that overlap with at least one of the SSB transmissions performed via the cell.

[0071] In certain aspects, the UE may receive signaling indicating unavailable resources associated with the set of PCIs. In this case, the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources are unavailable. Thus, determining a configuration for rate matching at block 515 may include determining to perform rate matching around channel resources that are unavailable or overlapping with the unavailable resources associated with the set of PCIs.

[0072] In some aspects, the indication of the rule may include an indication that at least a portion of the channel resources that overlap with unavailable resources for one or more selected PCIs in the set of PCIs are unavailable, and the resources for the channel overlap with unavailable resources for unselected PCIs in the set of PCIs. Thus, determining the configuration for rate matching at block 515 may include determining to perform rate matching around channel resources that are unavailable or overlap with unavailable resources for the one or more selected PCIs.

[0073] In certain aspects, the UE may receive an indication of scheduled channel resources via a cell associated with a PCI in one or more selected PCIs. In this case, the indication of the rule may include an indication that at least a portion of the channel resources overlapping with unavailable resources associated with the cell scheduling the channel resources are unavailable, and the resources used for the channel do not overlap with unavailable resources for one or more other PCIs in the set of PCIs. Thus, determining the configuration for rate matching at block 515 may include determining to perform rate matching around channel resources that are unavailable or overlapping with unavailable resources associated with a cell.

[0074] In certain aspects, a channel may be received via a PCI from one or more selected PCIs, and the group of PCIs may include one or more configured PCI subgroups. In this case, the UE may also receive signaling indicating unavailable resources associated with a PCI subgroup, and determine at least one PCI subgroup in the configured PCI subgroups that includes the one or more selected PCIs, one of the at least one PCI subgroups having a PCI via which the channel is received. The indication of the rule may include an indication that at least a portion of the channel resources that overlap with the unavailable resources associated with the one of the at least one PCI subgroups are unavailable. Therefore, in box 515, the UE may determine a configuration for rate matching by determining to perform rate matching around channel resources that are unavailable or overlap with unavailable resources associated with one of the at least one PCI subgroups.

[0075] In some aspects, the indication of the rule may include an indication that at least a portion of the channel resources that overlap with the unavailable resources associated with the at least one PCI subgroup are unavailable. Thus, determining a configuration for rate matching at block 515 may include determining to perform rate matching around channel resources that are unavailable or overlap with the unavailable resources associated with the at least one PCI subgroup.

[0076] In some aspects, multiple candidate rate matching modes may be configured for the group of PCIs. In this case, the UE may receive signaling indicating one of the multiple candidate rate matching modes, wherein one of the multiple candidate rate matching modes indicates unavailable resources associated with one or more selected PCIs. The indication of the rule may include an indication that at least a portion of the channel resources that overlap with the unavailable resources associated with one or more selected PCIs are unavailable, and the resources used for the channel do not overlap with the unavailable resources used for one or more other PCIs in the group of PCIs. Therefore, determining the configuration for rate matching at box 515 may include determining to perform rate matching around channel resources that are unavailable or overlap with unavailable resources associated with one or more selected PCIs.

[0077] Fig. 6A A communication protocol 600 for L1 / L2 inter-cell mobility with rate matching in accordance with certain aspects of the present disclosure is shown. As shown, the UE 120 may optionally indicate (one or more) L1 metrics 602 to the BS via a cell associated with PCI 1. The BS may then use the (one or more) L1 metrics to select a subset of (one or more) PCIs (e.g., PCI 2 and PCI 3) to serve the UE 120 and indicate the selected PCI to the UE. Although the subset of PCIs serving the UE includes multiple PCIs in the example communication protocol 600, in some cases, the subset of PCIs may include only a single PCI. The indication of the subset of PCIs serving the UE 120 may be via L1 or L2 signaling 604, such as DCI or MAC-CE.

[0078] In certain aspects, UE 120 may optionally transmit an indication 616 of UE support for various rules that may be used to determine unavailable resources around which to rate match when receiving a channel. UE 120 support for such rules may be considered when the BS indicates to UE 120 which candidate rule to use, as will be described in more detail herein.

[0079] UE 120 may also receive a message 606 indicating unavailable resources. Message 606 may be an SSB, and the indication of unavailable resources may be an indication of the position of the SSB transmission of the set of PCIs (e.g., ssb-PositionsInBurst), as described in more detail herein. Figure 6B As shown in the time-frequency diagram 614, in some cases, the message 606 may indicate resources of a channel (e.g., a PDSCH) that do not overlap with the SSB transmission of the set of PCIs.

[0080] The UE 120 may then receive control signaling 608 (eg, a PDCCH) scheduling the PDSCH 612. The UE 120 may then determine, at 610, a rate matching configuration for receiving the PDSCH 612.

[0081] The communication protocol 600 includes one or more steps or actions for performing rate matching. Certain steps and / or actions may be interchangeable. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified.

[0082] In certain aspects, at block 610, determination of the rate matching configuration may be based on an indication from the BS. For example, the rate matching configuration may be determined based on the type of RNTI scrambled with control signaling 608 (e.g., PDCCH), as described in more detail herein. In certain aspects of the present disclosure, one or more rules may be provided to determine the rate matching configuration.

[0083] In certain aspects of the present disclosure, the unavailable resources around which rate matching may be performed may correspond to SSB transmissions. In other words, a subset of (one or more) PCIs serving UE 120 may be selected from a set of PCIs via L1 / L2 signaling, and one or more rate matching rules may be configured to perform rate matching around resources for SSB transmissions performed by one or more PCIs in the set of PCIs.

[0084] For example, the one or more rate matching rules may include a first candidate rule (also referred to herein as "SSB rate matching rule 1"). According to SSB rate matching rule 1, for a channel from one PCI (e.g., PCI 2), UE 120 may assume that no SSBs from any PCI in the group are transmitted in REs of the PDSCH. In other words, UE 120 may determine (e.g., at block 610) that rate matching is not required around the resources when receiving the channel because UE 120 assumes that there are no SSB transmissions that overlap with the channel resources.

[0085] In certain aspects, the one or more rate matching rules may include a second candidate rule (also referred to herein as "SSB rate matching rule 2"). According to SSB rate matching rule 2, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE 120 may assume that channel REs that overlap with the SSB indicated by the BS (e.g., via ssb-PositionsInBurst) are not available for any PCI in the set of PCIs (e.g., PCI 1 to PCI n).

[0086] In certain aspects, the one or more rate matching rules may include a third candidate rule (e.g., also referred to herein as "SSB rate matching rule 3"). According to SSB rate matching rule 3, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE may assume that REs of the channel that overlap with the SSB indicated by the BS (e.g., via ssb-PositionsInBurst) are not available for any PCI in the selected subset (e.g., PCI 2 and PCI 3).

[0087] In certain aspects, the one or more rules may include a fourth candidate rule (e.g., also referred to herein as "SSB rate matching rule 4"). According to SSB rate matching rule 4, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE 120 may assume that channel REs that overlap with the SSB indicated by the BS (e.g., via ssb-PositionsInBurst) are not available for the PCI (e.g., PCI 2) of the cell that schedules the channel.

[0088] A channel from a PCI (also referred to as a channel associated with a PCI) generally refers to the TCI state or QCL information about the channel associated with the PCI. For example, the QCL source RS of the channel indicated by the TCI state may be an SSB transmitted with the PCI. The PCI may be indicated by the PSS or SSS of the SSB.

[0089] As described herein, the rules for determining the rate matching configuration may be indicated by the BS. For example, the UE 120 may select different rules based on the RNTI and other indicators (e.g., control signaling 608) used to schedule the PDCCH. For example, for a PDSCH scheduled by a PDCCH scrambled with an SI-RNTI, and where the SI indicator in the DCI (e.g., PDCCH) is set to 0, the UE 120 may select SSB rate matching rule 1 (e.g., assuming that no SSBs from any PCI in the group are transmitted in the REs of the PDSCH, as described herein). In other words, the determination of the rate matching configuration may be based on the logical state of the RNTI and SI indicator that scramble the PDCCH.

[0090] For another example, for a PDSCH scheduled by a PDCCH scrambled with an SI-RNTI, and when the SI indicator in the DCI is set to 1, or when the PDCCH is scrambled with RA-RNTI, MsgB-RNTI, P-RNTI, TC-RNTI, UE 120 may select SSB rate matching rule 2 (e.g., assuming that PDSCH REs overlapping with SSBs indicated by the BS (e.g., via ssb-PositionsInBurst) are not available for any PCI in the set of PCIs (e.g., PCI 1 to PCI n).

[0091] In certain aspects, UE 120 may indicate whether UE 120 supports each candidate rule, as described herein. Fig. 6A As shown, UE 120 may transmit an indication 616 of UE 120 support (e.g., capability) for the candidate rule, and the BS's selection of the rule to be applied for rate matching may be based on the indicated support of UE 120. For example, UE 120 may be instructed to use SSB rate matching rule 4, where UE 120 supports SSB rate matching rule 4. Otherwise, SSB rate matching rule 2 or SSB rate matching rule 3 may be used.

[0092] In certain aspects of the present disclosure, UE 120 may determine channel (e.g., PDSCH 612) resources around which to rate match based on an indication of unavailable resources from the BS. For example, assuming that a subset of (one or more) PCIs serving UE 120 are selected from a set of PCIs via L1 / L2 signaling, as described herein. One or more candidate rate matching rules may be configured for the indicated unavailable resources.

[0093] In certain aspects, the one or more candidate rules may include a first unavailable resource rate matching rule (also referred to herein as "unavailable resource rate matching rule 1"). According to unavailable resource rate matching rule 1, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE 120 may assume that REs of the channel overlapping with the indicated unavailable resources are not available for any PCI in the set of PCIs (e.g., PCI 1 to PCI n). Therefore, the UE 120 may perform rate matching around the unavailable resources when receiving the channel.

[0094] In certain aspects, the one or more candidate rules may include a second unavailable resource rate matching rule (also referred to herein as "unavailable resource rate matching rule 2"). According to unavailable resource rate matching rule 2, for channels (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE 120 may assume that REs of channels overlapping with the indicated unavailable resources are not available for any PCI in the selected subset (e.g., PCI 2 and PCI3).

[0095] In certain aspects, the one or more candidate rules may include a third unavailable resource rate matching rule (also referred to herein as "unavailable resource rate matching rule 3"). According to unavailable resource rate matching rule 3, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE may assume that REs of the channel overlapping with the indicated unavailable resources are unavailable for the PCI (e.g., PCI 2) of the cell that schedules the channel.

[0096] In some aspects, the one or more candidate rules may include a fourth unavailable resource rate matching rule (also referred to herein as "unavailable resource rate matching rule 4"). In some aspects, a rate matching mode may be configured (e.g., preconfigured) for each candidate PCI subgroup (e.g., instead of configuring a rate matching mode for each PCI). According to unavailable resource rate matching rule 4, if a selected PCI subset (e.g., selected by the BS and indicated to the UE using L1 or L2 signaling) includes at least one PCI subgroup, the UE may apply the rate matching mode to the subgroup PCI. For example, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), the UE 120 may assume that REs of the channel overlapping with the indicated unavailable resources are unavailable for the corresponding PCI subgroup. The corresponding PCI subgroup may be a PCI subgroup having a PCI (e.g., PCI 2) via which the channel is transmitted. As another example, according to unavailable resource rate matching rule 4, for a channel (e.g., PDSCH 612) from one PCI (e.g., PCI 2), UE 120 may assume that REs of the channel overlapping with the indicated unavailable resources are not available for any PCI subgroup in the selected PCI subset.

[0097] In some aspects, the one or more candidate rules may include a fifth unavailable resource rate matching rule (also referred to herein as "unavailable resource rate matching rule 5"). In some aspects, the BS may configure (e.g., pre-configure) multiple candidate rate matching modes for the set of PCIs used for L1 / L2 inter-cell mobility. In this case, the candidate rate matching mode may not be associated with any PCI or PCI subgroup. According to unavailable resource rate matching rule 5, for each selected PCI subset, the BS may dynamically indicate a mode subset in the candidate mode via DCI, MAC-CE, or RRC signaling. The indicated mode subset may indicate unavailable resources associated with the selected PCI subset, and the UE 120 may perform rate matching around resources of a channel (e.g., PDSCH 612) that overlaps with the unavailable resources associated with the selected PCI subset.

[0098] In some aspects, UE 120 may receive an indication of unavailable resources (e.g., via message 606, such as regarding Fig. 6A As described herein). For example, the indication of unavailable resources may be a rate matching pattern with RB-symbol level granularity. In other words, the rate matching pattern may be indicated with RB-level granularity in the frequency domain and with symbol-level granularity in the time domain, as described herein. Examples of rate matching patterns with RB-symbol level granularity include rateMatchPatternGroup1 or rateMatchPatternGroup2 indicated in the DCI and (one or more) rateMatchPattern configured by the RRC, as described herein. In some cases, the rate matching pattern indicated to the UE 120 may have RE-level granularity (e.g., with RE-level granularity in the frequency domain and with symbol-level granularity in the time domain). Examples of rate matching patterns with RE-level granularity include RateMatchingPatternLTE-CRS, CRSPatternList-CORESETPoolIndex, CRSPatternList-r16, and P / SP / AP ZP-CSI-RS resources configured / activated / triggered by the BS (e.g., gNB), as described herein.

[0099] In certain aspects, the UE 120 may select one of the candidate rules based on an indication from the BS and apply the rate matching configuration accordingly. For example, one of the candidate rules may be selected based on the RNTI and other indicators used to schedule the PDCCH. For example, for a PDSCH scheduled by a PDCCH scrambled with a C-RNTI, MCS-C-RNTI, CS-RNTI, or PDSCH with SPS, unavailable resource rate matching rule 3 may be used.

[0100] In certain aspects, UE 120 may indicate whether UE 120 supports each of the candidate rules. For example, if UE 120 indicates support for unavailable resource rate matching rule 3, the BS may select and indicate to UE 120 to use unavailable resource rate matching rule 3 for rate matching. Otherwise, UE 120 may be instructed to use unavailable resource rate matching rule 1 or 2.

[0101] Example Wireless Communication Device

[0102] Figure 7 A communication device 700 is shown, which may include devices configured to perform operations for the techniques disclosed herein (e.g., Figure 4 and Fig. 6A In some examples, the communication device 700 may be, for example, a device related to Figure 1 and Figure 2 A base station (BS) 110a is depicted.

[0103] The communication device 700 includes a processing system 702 coupled to a transceiver 708 (e.g., a transmitter and / or a receiver). The transceiver 708 is configured to transmit (or send) and receive signals for the communication device 700, such as the various signals described herein, via an antenna 710. The processing system 702 may be configured to perform processing functions for the communication device 700, including processing signals received by the communication device 700 and / or to be transmitted.

[0104] The processing system 702 includes a processor 704 coupled to a computer-readable medium / memory 712 via a bus 706. In some aspects, the computer-readable medium / memory 712 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 704, cause the processor 704 to perform Figure 4 The operations shown or other operations are used to perform various techniques for rate matching discussed herein. In some aspects, the computer-readable medium / memory 712 stores code 714 for sending (e.g., an example of a component for sending); code 716 for generating (e.g., an example of a component for generating); and optional code 718 for receiving (e.g., an example of a component for receiving).

[0105] In some aspects, processor 704 has circuitry configured to implement code stored in computer readable medium / memory 712. Processor 704 includes circuitry 724 for receiving (e.g., an example of means for receiving); circuitry 726 for generating (e.g., an example of means for generating); and optional circuitry 728 for receiving (e.g., an example of means for receiving).

[0106] The various components of the communication device 700 may provide for performing the methods described herein (including Figure 4 and Fig. 6A method) components.

[0107] In some examples, means for transmitting or sending (or means for outputting for transmission) may include Figure 2 The transceiver 232 and / or antenna(s) 234 and / or Figure 7 708 and antenna 710 of the communication device 700.

[0108] In some examples, the means for receiving (or the means for obtaining) may include Figure 2 The transceiver 232 and / or antenna(s) 234 and / or Figure 7 708 and antenna 710 of the communication device 700.

[0109] In some examples, the means for sending, the means for generating, and the means for receiving may include various processing system components, such as: Figure 7 One or more processors 704, or Figure 2 1 , including a receive processor 238, a transmit processor 220, a TX MIMO processor 230, and / or a controller / processor 240 (including a rate matching manager 112).

[0110] It is worth noting that Figure 7 This is just one example of use, and many other examples and configurations of communication device 700 are possible.

[0111] Figure 8 A communication device 800 is shown, which may include devices configured to perform operations for the techniques disclosed herein (e.g., Figure 5 and Fig. 6A In some examples, the communication device 800 may be, for example, a device for Figure 1 and Figure 2 A user equipment (UE) 120a is depicted.

[0112] The communication device 800 includes a processing system 802 coupled to a transceiver 808 (e.g., a transmitter and / or a receiver). The transceiver 808 is configured to transmit (or send) and receive signals for the communication device 800, such as the various signals described herein, via an antenna 810. The processing system 802 may be configured to perform processing functions for the communication device 800, including processing signals received by the communication device 800 and / or to be transmitted.

[0113] The communication device 800 includes a processing system 802 coupled to a transceiver 808 (e.g., a transmitter and / or a receiver). The transceiver 808 is configured to transmit (or transmit) and receive signals, such as the various signals described herein, for the communication device 800 via an antenna 810. The processing system 802 may be configured to perform processing functions for the communication device 800, including processing signals received and / or transmitted by the communication device 800.

[0114] The processing system 802 includes a processor 804 coupled to a computer-readable medium / memory 812 via a bus 806. In some aspects, the computer-readable medium / memory 812 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 804, cause the processor 804 to perform Figure 5 The illustrated operations or other operations may be used to perform the various techniques for rate matching discussed herein.

[0115] In some aspects, computer readable medium / memory 812 stores code 814 for receiving (e.g., an example of a component for receiving); code 816 for determining (e.g., an example of a component for determining); and optional code 818 for sending (e.g., an example of a component for sending).

[0116] In some aspects, processor 804 has circuitry configured to implement code stored in computer-readable medium / memory 812. Processor 804 includes circuitry 824 for receiving (e.g., an example of means for receiving); circuitry 826 for determining (e.g., an example of means for determining); and optional circuitry 828 for transmitting (e.g., an example of means for transmitting).

[0117] The various components of the communication device 800 may provide for performing the methods described herein (including Figure 5 and Fig. 6A method) components.

[0118] In some examples, means for transmitting or sending (or means for outputting for transmission) may include Figure 2 The transceiver 254 and / or antenna(s) 252 and / or Figure 8 8 and antenna 810 of the communication device 800.

[0119] In some examples, the means for receiving (or the means for obtaining) may include Figure 2 The transceiver 254 and / or antenna(s) 252 and / or Figure 8 The transceiver 808 and antenna 810 of the communication device 800 in FIG.

[0120] In some examples, the means for receiving, the means for determining, and the means for sending may include various processing system components, such as: Figure 8 One or more processors 804, or Figure 2 1 , including a receive processor 258, a transmit processor 264, a TX MIMO processor 266, and / or a controller / processor 280 (including the rate matching manager 122).

[0121] It is worth noting that Figure 8 Just one example is used, and many other examples and configurations of the communication device 800 are possible.

[0122] Rate matching manager 112 or 122 may support wireless communications according to examples disclosed herein.

[0123] Rate matching manager 112 or 122 may be an example of a component for performing various aspects described herein. Rate matching manager 112 or 122 or its subcomponents may be implemented in hardware (e.g., in an uplink resource management circuit). The circuit may include a processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein.

[0124] In another embodiment, the rate matching manager 112 or 122 or its subcomponents may be implemented in code executed by a processor (e.g., as configuration management software or firmware) or any combination thereof. If implemented in code executed by a processor, the functions of the rate matching manager 112 or 122 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device.

[0125] In some examples, rate matching manager 112 or 122 may be configured to use or otherwise cooperate with transceiver 708 or 808 to perform various operations (e.g., receive, generate, determine, transmit, etc.)

[0126] Rate matching manager 112 or 122 or its subcomponents can be physically located in a variety of locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, rate matching manager 112 or 122 or its subcomponents can be separate and distinct components according to various aspects of the present disclosure. In some examples, according to various aspects of the present disclosure, rate matching manager 112 or 122 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0127] Sample Clauses

[0128] Implementation examples are described in the following numbered clauses:

[0129] Clause 1. A method for wireless communication by a user equipment (UE), comprising: receiving low layer signaling indicating one or more selected physical cell identifiers (PCIs) from a set of PCIs for serving the UE; receiving an indication of rules for determining a configuration for rate matching around unavailable resources of a channel, the channel to be received via one or more cells associated with the one or more selected PCIs; determining the configuration for rate matching based on the rules; and receiving the channel via the one or more cells based on the determination.

[0130] Clause 2. The method of clause 1, wherein the low layer signaling comprises downlink control information (DCI) signaling, medium access control (MAC)-control element (CE) signaling, or any combination thereof.

[0131] Clause 3. A method according to clause 1 or 2, wherein: the indication of the rule includes an indication that the resources of the channel do not overlap with the synchronization signal block (SSB) transmission of the group of PCIs; and determining the configuration for rate matching includes avoiding rate matching around the unavailable resources.

[0132] Clause 4. The method according to any one of clauses 1-3 further includes receiving signaling indicating resources allocated for SSB transmission of the group of PCIs, wherein: the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the SSB transmission for the group of PCIs are unavailable resources; and determining the configuration for rate matching includes determining to perform rate matching around the unavailable resources or around resources of the channel overlapping with the SSB transmission of the group of PCIs.

[0133] Clause 5. The method according to any one of clauses 1-4 further includes receiving signaling indicating resources allocated for SSB transmission of the group of PCIs, wherein: the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions for the one or more selected PCIs in the group of PCIs are the unavailable resources, and the resources used for the channel do not overlap with the SSB transmissions of the unselected PCIs in the group of PCIs; and determining the configuration for rate matching includes determining to perform rate matching around the unavailable resources or around the channel resources overlapping with the SSB transmissions for the one or more selected PCIs.

[0134] Clause 6. The method according to any one of clauses 1-5 further includes: receiving an indication of resources for scheduling the channel via a cell associated with a PCI in the one or more selected PCIs; and receiving signaling indicating resources allocated for SSB transmissions of the group of PCIs, wherein: the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions performed via the cell scheduling resources for the channel are unavailable resources, and the resources used for the channel do not overlap with SSB transmissions for one or more other PCIs in the group of PCIs; and determining the configuration for rate matching includes determining to perform rate matching around the unavailable resources or around the resources overlapping with at least one of the SSB transmissions performed via the cell.

[0135] Clause 7. A method as described in any of clauses 1-6, wherein the indication of the rule comprises a radio network temporary identifier (RNTI) associated with the channel.

[0136] Clause 8. The method of clause 7, wherein receiving the indication of the rule comprises receiving a control channel scrambled with the RNTI.

[0137] Clause 9. A method according to clause 7 or 8, wherein the RNTI comprises a system information (SI)-RNTI, and wherein the determination of the configuration is based on whether a control channel scheduling resources for the channel is scrambled with the SI-RNTI.

[0138] Clause 10. The method of clause 9, wherein the determination of the configuration is further based on a logical state of a system information indicator in downlink control information (DCI) of the control channel.

[0139] Clause 11. A method according to any one of clauses 7-10, wherein the RNTI comprises a random access (RA)-RNTI, a message B (MsgB)-RNTI, a paging (P)-RNTI or a temporary cell (TC)-RNTI, wherein the configuration is determined based on whether a control channel for scheduling resources for the channel is scrambled with the RA-RNTI, the MsgB-RNTI, the paging (P)-RNTI or the temporary cell (TC)-RNTI.

[0140] Clause 12. The method of any of clauses 1-11, wherein receiving the regular indication comprises receiving a system information indicator associated with the channel, and wherein the regular indication comprises the system information indicator.

[0141] Clause 13. The method according to any one of clauses 1-12 further includes receiving signaling indicating unavailable resources associated with the group of PCIs, wherein: the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources are unavailable; and determining the configuration for rate matching includes determining to perform rate matching around the channel resources that are unavailable or overlapping with the unavailable resources associated with the group of PCIs.

[0142] Clause 14. The method according to any one of clauses 1-13 further includes receiving signaling indicating unavailable resources associated with the group of PCIs, wherein: the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources for the one or more selected PCIs in the group of PCIs are unavailable, and the resources used for the channel do not overlap with the unavailable resources for the unselected PCIs in the group of PCIs; and determining the configuration for rate matching includes determining to perform rate matching around the channel resources that are unavailable or overlapping with the unavailable resources for the one or more selected PCIs.

[0143] Clause 15. The method according to any one of clauses 1-14 further includes: receiving an indication of resources scheduled for a channel via a cell associated with a PCI in the one or more selected PCIs; and receiving signaling indicating unavailable resources associated with the group of PCIs, wherein: the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the cell that schedules the resources for the channel are unavailable, and the resources used for the channel do not overlap with unavailable resources for one or more other PCIs in the group of PCIs; and determining the configuration for rate matching includes determining to perform rate matching around the channel resources that are unavailable or overlapping with the unavailable resources associated with the cell.

[0144] Clause 16. A method according to any one of clauses 1-15, wherein: the channel is received via a PCI in the one or more selected PCIs; the group of PCIs includes one or more configured PCI subgroups; the method further includes: receiving signaling indicating unavailable resources associated with the PCI subgroup; and determining at least one PCI subgroup in the configured PCI subgroup that includes the one or more selected PCIs, one of the at least one PCI subgroup having a PCI via which the channel is received; the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the one of the at least one PCI subgroups are unavailable; and determining the configuration for rate matching includes determining to perform rate matching around the channel resources that are unavailable or overlapping with the unavailable resources associated with one of the at least one PCI subgroups.

[0145] Clause 17. A method according to any one of clauses 1-16, wherein: the group of PCIs includes one or more configured PCI subgroups; the method further includes: receiving signaling indicating unavailable resources associated with the PCI subgroup; and determining at least one PCI subgroup in the configured PCI subgroup that includes the one or more selected PCIs; the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the at least one PCI subgroup are unavailable; and determining the configuration for rate matching includes determining to perform rate matching around the channel resources that are unavailable or overlapping with the unavailable resources associated with the at least one PCI subgroup.

[0146] Clause 18. A method according to any one of clauses 1-17, wherein: multiple candidate rate matching modes are configured for the group of PCIs; the method further includes receiving signaling indicating one of the multiple candidate rate matching modes, wherein the one of the multiple candidate rate matching modes indicates unavailable resources associated with the one or more selected PCIs; the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the one or more selected PCIs are unavailable, and the resources used for the channel do not overlap with unavailable resources used for one or more other PCIs in the group of PCIs; and determining the configuration for rate matching includes determining to perform rate matching around the channel resources that are unavailable or overlapping with the unavailable resources associated with the one or more selected PCIs.

[0147] Clause 19. A method as described in any of clauses 13-18, wherein the indication of the rule comprises an indication of a rate matching pattern for the channel, the rate matching pattern indicating the unavailable resources.

[0148] Clause 20. The method of clause 19, wherein the rate matching pattern has a resource block (RB) level granularity in the frequency domain and a symbol level granularity in the time domain.

[0149] Clause 21. A method according to clause 19 or 20, wherein the rate matching pattern has a resource element (RE) level granularity in the frequency domain and a symbol level granularity in the time domain.

[0150] Clause 22. A method according to any one of clauses 7-21, wherein the RNTI comprises a cell (C)-RNTI, a modulation and coding scheme (MCS)-C-RNTI or a configuration scheduling (CS)-RNTI, wherein the configuration is determined based on whether a control channel that schedules resources for the channel is encrypted with the C-RNTI, the MCS-C-RNTI or the CS-RNTI.

[0151] Clause 23. The method of any of clauses 13-22, wherein the determination of the configuration is based on whether the channel is scheduled using semi-persistent scheduling (SPS).

[0152] Clause 24. A method according to any of clauses 1-23, further comprising transmitting an indication that the UE is capable of supporting one or more candidate rules for determining the configuration for rate matching, wherein the indication of the rule is selected from the one or more candidate rules.

[0153] Clause 25. A method as described in any of clauses 1-24, wherein the set of PCIs is associated with a plurality of transmission reception points (TRPs) of the cell.

[0154] Clause 26. A method as described in any of clauses 1-25, wherein the set of PCIs is associated with a plurality of cells.

[0155] Clause 27. A method for wireless communication by a base station (BS), comprising: transmitting to a user equipment (UE) an indication of rules for determining a configuration for rate matching around unavailable resources of a channel, wherein the channel is to be transmitted via one or more cells associated with one or more selected PCIs from a set of PCIs, wherein the one or more selected PCIs are configured using low layer signaling to serve the UE; generating the channel according to the configuration for rate matching; and transmitting the channel to the UE.

[0156] Clause 28. The method of clause 27, wherein the low layer signaling comprises downlink control information (DCI) signaling, medium access control (MAC)-control element (CE) signaling, or any combination thereof.

[0157] Clause 29. A method according to clause 27 or 28, wherein the indication of the rule includes an indication that resources of the channel are assumed to not overlap with synchronization signal block (SSB) transmissions of the set of PCIs.

[0158] Clause 30. The method according to any one of clauses 27-29 further includes transmitting signaling indicating resources allocated for SSB transmission of the group of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the SSB transmission for the group of PCIs are the unavailable resources.

[0159] Clause 31. The method according to any one of clauses 27-30 further includes transmitting signaling indicating resources allocated for SSB transmission of the group of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions of the one or more selected PCIs in the group of PCIs are unavailable resources, and the resources used for the channel do not overlap with the SSB transmissions of the unselected PCIs in the group of PCIs.

[0160] Clause 32. The method according to any one of clauses 27-31 further includes: transmitting an indication of resources for scheduling the channel via a cell associated with a PCI in the one or more selected PCIs; and transmitting signaling indicating resources allocated for SSB transmission of the group of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions performed via the cell scheduling the resources for the channel are unavailable resources, and the resources used for the channel do not overlap with SSB transmissions for one or more other PCIs in the group of PCIs.

[0161] Clause 33. A method as described in any of clauses 27-32, wherein the indication of the rule comprises a radio network temporary identifier (RNTI) associated with the channel.

[0162] Clause 34. The method of clause 33, wherein transmitting the indication of the rule comprises transmitting a control channel scrambled with the RNTI.

[0163] Clause 35. A method according to clause 33 or 34, wherein the RNTI comprises a system information (SI)-RNTI, and wherein the indication of the rule comprises scrambling a control channel that schedules resources for the channel with the SI-RNTI.

[0164] Clause 36. The method of clause 35, wherein the indication of the rule further comprises a logical state of a system information indicator in downlink control information (DCI) of the control channel.

[0165] Clause 37. A method according to any of clauses 33-36, wherein the RNTI comprises a random access (RA)-RNTI, a message B (MsgB)-RNTI, a paging (P)-RNTI or a temporary cell (TC)-RNTI, and wherein the indication of the rule comprises scrambling a control channel that schedules resources for the channel with the RA-RNTI, the MsgB-RNTI, the paging (P)-RNTI or the temporary cell (TC)-RNTI.

[0166] Clause 38. The method of any of clauses 27-37, wherein transmitting the regular indication comprises transmitting a system information indicator associated with the channel, and wherein the regular indication comprises the system information indicator.

[0167] Clause 39. A method according to any of clauses 27-38, further comprising transmitting signaling indicating unavailable resources associated with the set of PCIs, wherein the indication of the rule comprises an indication that at least a portion of the channel resources overlapping with the unavailable resources are unavailable.

[0168] Clause 40. The method according to any one of clauses 27-39 further includes transmitting signaling indicating unavailable resources associated with the group of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources for the one or more selected PCIs in the group of PCIs are unavailable, and the resources used for the channel do not overlap with the unavailable resources for the unselected PCIs in the group of PCIs.

[0169] Clause 41. The method according to any one of clauses 27-40 further includes: transmitting an indication of resources scheduled for a channel via a cell associated with a PCI in the one or more selected PCIs; and transmitting signaling indicating unavailable resources associated with the group of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the cell that schedules the resources for the channel are unavailable, and the resources used for the channel do not overlap with unavailable resources for one or more other PCIs in the group of PCIs.

[0170] Clause 42. A method according to any one of clauses 27-41, wherein: the channel is received via a PCI in the one or more selected PCIs; the group of PCIs includes one or more configured PCI subgroups; the method further includes transmitting signaling indicating unavailable resources associated with the PCI subgroups, at least one of the configured PCI subgroups includes the one or more selected PCIs, wherein one of the at least one PCI subgroups has a PCI via which the channel is transmitted; and the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the one of the at least one PCI subgroups are unavailable.

[0171] Clause 43. A method according to any one of clauses 27-42, wherein: the group of PCIs includes one or more configured PCI subgroups; the method further includes: transmitting signaling indicating unavailable resources associated with the PCI subgroup, at least one of the configured PCI subgroups including the one or more selected PCIs; and the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the at least one PCI subgroup are unavailable.

[0172] Clause 44. A method according to any one of clauses 27-43, wherein: multiple candidate rate matching modes are configured for the group of PCIs; the method further includes transmitting signaling indicating one of the multiple candidate rate matching modes, wherein the one of the multiple candidate rate matching modes indicates unavailable resources associated with the one or more selected PCIs; and the indication of the rule includes an indication that at least a portion of the channel resources overlapping with the unavailable resources associated with the one or more selected PCIs are unavailable, and the resources used for the channel do not overlap with unavailable resources used for one or more other PCIs in the group of PCIs.

[0173] Clause 45. The method of any of clauses 39-44, wherein the indication of the rule comprises an indication of a rate matching pattern for the channel, the rate matching pattern indicating the unavailable resources.

[0174] Clause 46. The method of clause 45, wherein the rate matching pattern has a resource block (RB) level granularity in the frequency domain and a symbol level granularity in the time domain.

[0175] Clause 47. A method according to clause 45 or 46, wherein the rate matching pattern has a resource element (RE) level granularity in the frequency domain and a symbol level granularity in the time domain.

[0176] Clause 48. A method according to any one of clauses 33-47, wherein the RNTI comprises a cell (C)-RNTI, a modulation and coding scheme (MCS)-C-RNTI or a configuration scheduling (CS)-RNTI, wherein the indication of the rule comprises scrambling a control channel that schedules resources for the channel with the C-RNTI, the MCS-C-RNTI or the CS-RNTI.

[0177] Clause 49. The method of any of clauses 38-48, wherein the indication of the rule comprises scheduling the channel using semi-persistent scheduling (SPS).

[0178] Clause 50. A method according to any of clauses 27-49, further comprising receiving an indication that the UE is capable of supporting one or more candidate rules for determining the configuration for rate matching, wherein the indication of the rule is selected from the one or more candidate rules.

[0179] Clause 51. A method as described in any of clauses 27-50, wherein the set of PCIs is associated with a plurality of transmission reception points (TRPs) of the cell.

[0180] Clause 52. A method as described in any of clauses 27-51, wherein the set of PCIs is associated with a plurality of cells.

[0181] Clause 53. An apparatus comprising: a memory; and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of any of clauses 1-52.

[0182] Clause 54. An apparatus comprising means for performing the method of any of clauses 1-52.

[0183] Clause 55. A non-transitory computer-readable medium comprising executable instructions that, when executed by one or more processors of a device, cause the device to perform the method of any of clauses 1-52.

[0184] Other considerations

[0185] The techniques described herein can be used for various wireless communication technologies, such as NR (e.g., 5GNR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are generally used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks can implement technologies such as NR (e.g. 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use EUTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology under development.

[0186] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) and / or a NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and base station (BS), next generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier or transmission reception point (TRP) can be used interchangeably. The BS can provide communication coverage for macro cells, pico cells, femto cells and / or other types of cells. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access to user equipment (UE) with service subscriptions. A pico cell can cover a relatively small geographic area and can allow unrestricted access to UEs with service subscriptions. A femto cell can cover a relatively small geographic area (e.g., a home) and can allow limited access to UEs associated with a femto cell (e.g., a UE in a closed subscriber group (CSG)). A BS for a macro cell can be referred to as a macro BS. A BS for a pico cell can be referred to as a pico BS. A BS for a femto cell can be referred to as a femto BS or a home BS.

[0187] UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a customer premises equipment (CPE), a cellular phone, a smart phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or medical instrument, a biometric sensor / device, a wearable device (such as a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music device, a video device, a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc. that can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node can provide, for example, connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0188] In some examples, access to the air interface can be scheduled. The scheduling entity (e.g., BS) allocates resources for communication between some or all devices and equipment within its service area or cell. The scheduling entity may be responsible for scheduling, specifying, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduling communications, the subordinate entity utilizes the resources allocated by the scheduling entity. The BS is not the only entity that can be used as a scheduling entity. In some examples, the UE may be used as a scheduling entity, and resources for one or more subordinate entities (e.g., one or more other UEs) may be scheduled, and other UEs may use the resources scheduled by the UE for wireless communication. In some examples, the UE may be used as a scheduling entity in a peer-to-peer (P2P) network and / or a mesh network. In the mesh network example, in addition to communicating with the scheduling entity, the UEs may also communicate directly with each other.

[0189] Method disclosed herein includes one or more steps or actions for implementing the method. Method steps and / or actions can be interchangeable with each other. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified.

[0190] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

[0191] As used herein, the term "determine" encompasses a wide variety of actions. For example, "determine" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, etc. In addition, "determine" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. In addition, "determine" may include resolving, selecting, choosing, establishing, etc.

[0192] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but should be given a full scope consistent with the language of the claims, wherein the reference to an element in the singular is not intended to mean "one and only one", unless specifically stated herein, but "one or more". Unless otherwise specifically stated, the term "some" refers to one or more. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Moreover, regardless of whether such disclosure is explicitly stated in the claims, anything disclosed herein is not intended to be exclusively used for publication. Any claim element shall not be interpreted under Section 112(f) of Chapter 35 of the United States Code unless the element is explicitly stated with the phrase "means for...", or, in the case of a method claim, the element is stated with the phrase "step for...".

[0193] The various operations of the above method can be performed by any suitable component capable of performing the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors. Generally, where operations are shown in the accompanying drawings, those operations may have corresponding corresponding components plus functional components with similar numbers.

[0194] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed with 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 (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a combination of multiple microprocessors, a combination of one or more microprocessors in combination with a DSP core, or any other such configuration.

[0195] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. The bus may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. Among other things, the bus interface may be used to connect a network adapter to the processing system via the bus. The network adapter may be used to implement signal processing functions at the PHY layer. In the case of a user terminal (see Figure 1 ), a user interface (e.g., keyboard, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described in detail. The processor may be implemented with one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the described functionality for the processing system, depending on the specific application and the overall design constraints imposed on the entire system.

[0196] If implemented in software, the function may be stored as one or more instructions or codes on a computer-readable medium or transmitted through a computer-readable medium. Software should be broadly interpreted as referring to instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. Computer-readable media include both computer storage media and communication media, and communication media include any media that facilitates the transfer of computer programs from one place to another. The processor may be responsible for managing the bus and conventional processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read information from the storage medium and can write information to the storage medium. Alternatively, the storage medium may be integrated with the processor. For example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or in addition thereto, a machine-readable medium or any portion thereof may be integrated into a processor, such as a case where a cache and / or a general register file may be present. For example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard disk drives, or any other suitable storage media, or any combination thereof. Machine-readable media may be embodied in a computer program product.

[0197] A software module may include a single instruction or many instructions, and may be distributed over several different code segments, between different programs, and over multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a sending module and a receiving module. Each software module may reside in a single storage device, or may be distributed over multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During the execution of a software module, a processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When referring to the functions of the following software modules, it should be understood that such functions are implemented by a processor when instructions from the software module are executed.

[0198] In addition, any connection is appropriately referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared (IR), radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves can be included in the definition of the medium. As used herein, disks and optical disks include compact disks (CDs), laser optical disks, optical optical disks, digital versatile disks (DVDs), floppy disks, and optical disks, wherein disks typically copy data magnetically, and optical disks copy data optically using lasers. Therefore, in some aspects, a computer-readable medium may include a non-temporary computer-readable medium (e.g., a tangible medium). In addition, for other aspects, a computer-readable medium may include a temporary computer-readable medium (e.g., a signal). The above combination should also be included in the scope of a computer-readable medium.

[0199] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having stored thereon (and / or encoded thereon) instructions, the instructions being executable by one or more processors to perform the operations described herein, for example, for performing the operations described herein and in Figure 4-5 The operations shown in the instructions.

[0200] In addition, it should be understood that the modules and / or other appropriate components for performing the methods and techniques described herein can be downloaded and / or otherwise obtained by the user terminal and / or base station as appropriate. For example, such a device can be coupled to a server to facilitate the transfer of components for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage component (e.g., RAM, ROM, a physical storage medium such as an optical disc (CD) or a floppy disk, etc.), so that the user terminal and / or base station can obtain various methods after the storage component is coupled to or provided to the device. In addition, any other suitable technology for providing the methods and techniques described herein to the device can be utilized.

[0201] It is to be understood that the claims are not limited to the precise configuration and components shown above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a user equipment UE, comprising: receiving low layer signaling indicating one or more selected PCIs from a set of physical cell identifiers (PCIs) for serving the UE; receiving an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel to be received via one or more cells associated with the one or more selected PCIs; receiving, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources for scheduling the channel; receiving signaling indicating resources allocated for synchronization signal block (SSB) transmissions of the set of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions via the cell scheduling resources for the channel are the unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs; determining the configuration for rate matching based on the rule, wherein the determining of the configuration comprises determining to rate match around the unavailable resources or around the resources overlapping with at least one of the SSB transmissions via the cell; and The channel is received via the one or more cells based on the determination.

2. The method according to claim 1, wherein: The low layer signaling includes downlink control information DCI signaling, media access control MAC-control element CE signaling or any combination thereof.

3. The method according to claim 1, wherein: The indication of the rule comprises a Radio Network Temporary Identifier (RNTI) associated with the channel.

4. The method according to claim 3, wherein: Receiving an indication of the rule includes receiving a control channel scrambled with the RNTI.

5. The method according to claim 3, wherein: The RNTI comprises system information SI-RNTI, and wherein the determination of the configuration is based on whether a control channel scheduling resources for the channel is scrambled with the SI-RNTI.

6. The method according to claim 5, wherein: The determination of the configuration is further based on a logical state of a system information indicator in downlink control information DCI of the control channel.

7. The method according to claim 3, wherein: The RNTI includes a random access RA-RNTI, a message B MsgB-RNTI, a paging P-RNTI or a temporary cell TC-RNTI, wherein the configuration is determined based on whether a control channel that schedules resources for the channel is scrambled using the RA-RNTI, the MsgB-RNTI, the paging P-RNTI or the temporary cell TC-RNTI.

8. The method according to claim 1, wherein: Receiving the indication of the rule comprises receiving a system information indicator associated with the channel, and wherein the indication of the rule comprises the system information indicator.

9. The method of claim 1 , further comprising receiving signaling indicating unavailable resources associated with the set of PCIs, wherein: The indication of the rule includes an indication that at least a portion of the resources of the channel overlapping with the unavailable resources are unavailable; and Determining the configuration for rate matching includes determining to rate match around resources of the channel that are unavailable or overlap with the unavailable resources associated with the set of PCIs.

10. The method of claim 1 , further comprising receiving signaling indicating unavailable resources associated with the set of PCIs, wherein: The indication of the rule includes an indication that at least a portion of the resources of the channel that overlap with the unavailable resources for the one or more selected PCIs in the set of PCIs are unavailable, and that the resources for the channel do not overlap with the unavailable resources for unselected PCIs in the set of PCIs; and Determining the configuration for rate matching includes determining to rate match around the channel resources that are unavailable or overlap with the unavailable resources for the one or more selected PCIs.

11. The method according to claim 1, further comprising: receiving, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources scheduled for the channel; as well as receiving signaling indicating unavailable resources associated with the set of PCIs, wherein: The indication of the rule includes an indication that at least a portion of the resources of the channel that overlap with the unavailable resources associated with the cell that schedules resources for the channel are unavailable, and that the resources for the channel do not overlap with unavailable resources for one or more other PCIs in the set of PCIs; and Determining the configuration for rate matching includes determining to rate match around resources of the channel that are unusable or overlap with the unusable resources associated with the cell.

12. The method of claim 1, wherein: receiving the channel via a PCI of the one or more selected PCIs; The group of PCIs includes one or more configured PCI subgroups; The method further comprises: receiving signaling indicating unavailable resources associated with the PCI subgroup; as well as determining at least one of the configured PCI subgroups that includes the one or more selected PCIs, one of the at least one PCI subgroup having a PCI via which the channel is received; The indication of the rule comprises an indication that at least a portion of the resources of the channel overlapping with the unusable resources associated with the one of the at least one PCI subgroup is unusable; and Determining the configuration for rate matching includes determining to rate match around resources of the channel that are unavailable or overlap with the unavailable resources associated with one of the at least one PCI subset.

13. The method of claim 1, wherein: The group of PCIs includes one or more configured PCI subgroups; The method further comprises: receiving signaling indicating unavailable resources associated with the PCI sub-group; and determining at least one PCI subgroup of the configured PCI subgroups that includes the one or more selected PCIs; The indication of the rule includes an indication that at least a portion of the resources of the channel overlapping with the unusable resources associated with the at least one PCI subgroup are unusable; and Determining the configuration for rate matching includes determining to rate match around resources of the channel that are unavailable or overlap with the unavailable resources associated with the at least one PCI sub-group.

14. The method of claim 1, wherein: Configure multiple candidate rate matching modes for the group of PCIs; The method further includes receiving signaling indicating one of the plurality of candidate rate matching modes, the one of the plurality of candidate rate matching modes indicating unavailable resources associated with the one or more selected PCIs; The indication of the rule includes an indication that at least a portion of the resources of the channel that overlap with the unavailable resources associated with the one or more selected PCIs are unavailable, and that resources for the channel do not overlap with unavailable resources for one or more other PCIs in the set of PCIs; and Determining the configuration for rate matching includes determining to rate match around resources of the channel that are unavailable or overlap with the unavailable resources associated with the one or more selected PCIs.

15. The method according to claim 9, wherein: The indication of the rule includes an indication of a rate matching mode for the channel, the rate matching mode indicating the unavailable resources.

16. The method according to claim 15, wherein: The rate matching pattern has a resource block (RB) level granularity in the frequency domain and a symbol level granularity in the time domain.

17. The method according to claim 15, wherein: The rate matching pattern has a resource element RE level granularity in the frequency domain and a symbol level granularity in the time domain.

18. The method according to claim 3, wherein: The RNTI includes a cell C-RNTI, a modulation and coding scheme MCS-C-RNTI or a configuration scheduling CS-RNTI, wherein the configuration is determined based on whether a control channel that schedules resources for the channel is scrambled using the C-RNTI, the MCS-C-RNTI or the CS-RNTI.

19. The method according to claim 9, wherein: The configuration is determined based on whether the channel is scheduled using semi-persistent scheduling (SPS).

20. The method of claim 1, further comprising transmitting an indication that the UE is capable of supporting one or more candidate rules for determining the configuration for rate matching, wherein The indication of the rule is selected from the one or more candidate rules.

21. The method according to claim 1, wherein: The set of PCIs is associated with multiple transmission reception points TRPs of the cell.

22. The method according to claim 1, wherein: The set of PCIs is associated with multiple cells.

23. A method for wireless communication by a base station BS, comprising: transmitting to a user equipment (UE) an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel to be transmitted via one or more cells associated with one or more selected ones of a set of physical cell identifiers (PCIs), the one or more selected PCIs configured using low layer signaling to serve the UE; sending, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources for scheduling the channel; sending signaling indicating resources allocated for synchronization signal block (SSB) transmission of the set of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions via the cell that schedules the resources for the channel are the unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs; generating the channel according to the configuration for rate matching; as well as The channel is transmitted to the UE.

24. The method according to claim 23, wherein: The low layer signaling includes downlink control information DCI signaling, media access control MAC-control element CE signaling or any combination thereof.

25. An apparatus for wireless communication by a user equipment UE, comprising: Memory; and one or more processors coupled to the memory, the memory and the one or more processors being configured to: receiving low layer signaling indicating one or more selected PCIs from a set of physical cell identifiers (PCIs) for the UE; receiving an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel to be received via one or more cells associated with the one or more selected PCIs; receiving, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources for scheduling the channel; receiving signaling indicating resources allocated for synchronization signal block (SSB) transmissions of the set of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions via the cell scheduling resources for the channel are the unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs; determining the configuration for rate matching based on the rule, wherein the determining of the configuration comprises determining to rate match around the unavailable resources or around the resources overlapping with at least one of the SSB transmissions via the cell; and The channel is received via the one or more cells based on the determination.

26. An apparatus for wireless communication by a base station BS, comprising: Memory; and one or more processors coupled to the memory, the memory and the one or more processors being configured to: transmitting to a user equipment (UE) an indication of a rule for determining a configuration for rate matching around unavailable resources of a channel to be transmitted via one or more cells associated with one or more selected ones of a set of physical cell identifiers (PCIs), the one or more selected PCIs configured for the UE using low layer signaling; sending, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources for scheduling the channel; sending signaling indicating resources allocated for synchronization signal block (SSB) transmission of the set of PCIs, wherein the indication of the rule includes an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions via the cell that schedules the resources for the channel are the unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs; generating the channel according to the configuration for rate matching; as well as The channel is transmitted to the UE.

27. An apparatus for wireless communication by a user equipment UE, comprising: means for receiving low layer signaling indicating one or more selected PCIs from a set of physical cell identifiers (PCIs) for serving the UE; means for receiving an indication of rules for determining configuration for rate matching around unavailable resources of a channel to be received via one or more cells associated with the one or more selected PCIs; means for receiving, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources for scheduling the channel; means for receiving signaling indicating resources allocated for synchronization signal block (SSB) transmissions of the set of PCIs, wherein the indication of the rule comprises an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions via the cell scheduling resources for the channel are the unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs; means for determining the configuration for rate matching based on the rule, wherein the determination of the configuration comprises determining to rate match around the unavailable resources or around the resources overlapping with at least one of the SSB transmissions via the cell; as well as Means for receiving the channel via the one or more cells based on the determination.

28. An apparatus for wireless communication by a base station BS, comprising: means for transmitting to a user equipment, UE, an indication of rules for determining a configuration for rate matching around unavailable resources of a channel to be transmitted via one or more cells associated with one or more selected ones of a set of physical cell identifiers, PCIs, the one or more selected PCIs configured using low layer signaling to serve the UE; means for sending, via a cell associated with a PCI of the one or more selected PCIs, an indication of resources for scheduling the channel; means for sending signaling indicating resources allocated for synchronization signal block (SSB) transmission of the set of PCIs, wherein the indication of the rule comprises an indication that at least a portion of the channel resources overlapping with at least one of the SSB transmissions via the cell scheduling resources for the channel are the unavailable resources, and the resources for the channel do not overlap with SSB transmissions for one or more other PCIs in the set of PCIs; means for generating said channel according to said configuration for rate matching; as well as Means for transmitting the channel to the UE.

29. A non-transitory computer-readable medium having instructions stored thereon, wherein when the instructions are executed by a processor, the processor is caused to perform the method of any one of claims 1-24.

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