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US-12627446-B2 - Method performed by user equipment, and user equipment

US12627446B2US 12627446 B2US12627446 B2US 12627446B2US-12627446-B2

Abstract

Provided in the present invention is a method performed by user equipment (UE), the method including: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, the configuration parameter including a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET).

Inventors

  • Xiaojun Ma
  • Chao Luo
  • Renmao Liu

Assignees

  • SHARP KABUSHIKI KAISHA

Dates

Publication Date
20260512
Application Date
20211013
Priority Date
20201016

Claims (6)

  1. 1 . A method performed by user equipment (UE), comprising: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, wherein the configuration parameter includes a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET), the location of the receiving bandwidth is determined by a reference point which is a bandwidth center of the SSB or CORESET0, and ½ bandwidth capabilities of the UE are determined on two sides of the reference point, the UE receives a first physical downlink control channel (PDCCH) and a second physical downlink control channel (PDCCH) within the receiving bandwidth and determines resource parameters of the first PDCCH and the second PDCCH, and the first PDCCH and the second PDCCH transmit the same downlink control information (DCI), wherein the first PDCCH is associated with a slot of n0 of one SSB with index i, the second PDCCH is associated with the slot of n0+1 of the SSB with the index i, the resource parameter of the first PDCCH and the second PDCCH is one or a combination of a control channel element (CCE) sequence number or a candidate PDCCH sequence number or a resource element group (REG) bundle sequence number, and the first PDCCH or the second PDCCH resource parameters of mapping from a CCE sequence number index x to a REG bundle sequence number f(x) according to a formula: f ⁡ ( x ) = ( rC + c + n shift ) ⁢ mod ⁢ ( N REG CORESET ⁢ 0 / L ) ⁢ x = cR + r ⁢ r = 0 , 1 , … , R - 1 ⁢ c = 0 , 1 , … , C - 1 C = N REG CORESET ⁢ 0 / ( LR ) n shift = { N ID cell otherwise N ID cell + ⌊ ( K ) ⋆ N symb CORESET L ⌋ for ⁢ slot ⁢ n ⁢ 0 where L = 6 , R = 2 , N symb CORESET is the number of symbols used by the CORESET: N REG CORESET is the number of REGs used by the CORESET; N ID cell is a cell ID; K is a relative location value of the CORESET and the SSB; n0 is the slot number where the first PDCCH is located; and otherwise where the second PDCCH is located.
  2. 2 . The method performed by user equipment according to claim 1 , wherein the location of the receiving bandwidth is determined according to relative locations of the SSB and the CORESET to overlap the location of the receiving bandwidth with the CORESET.
  3. 3 . The method performed by user equipment according to claim 1 , further comprising: determining the reference point of the receiving bandwidth according to an SSB subcarrier offset parameter to align the reference point with the location of subcarrier 0 of a common resource block (CRB) of the SSB.
  4. 4 . User equipment, comprising: a processor; and a memory storing instructions, wherein the instructions, when run by the processor, perform the method according to claim 1 .
  5. 5 . A method performed by user equipment (UE), comprising: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, wherein the configuration parameter includes a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET), and the location of the receiving bandwidth is determined by a reference point which is a bandwidth center of the SSB or CORESET0, and ½ bandwidth capabilities of the UE are determined on two sides of the reference point; the UE receives a first physical downlink control channel (PDCCH) and a second physical downlink control channel (PDCCH) within the receiving bandwidth and determines resource parameters of the first PDCCH and the second PDCCH, and the first PDCCH and the second PDCCH transmit the same downlink control information (DCI), wherein the first PDCCH is associated with a slot of no of one SSB with index i, the second PDCCH is associated with the slot of n0+1 of the SSB with the index i, the resource parameter of the first PDCCH and the second PDCCH is one or a combination of a control channel element (CCE) sequence number or a candidate PDCCH sequence number or a resource element group (REG) bundle sequence number, and the resource parameter of CCE sequence number of the first PDCCH according to a formula: L · { ( Y p , n sf μ + ⌊ m s , n CI · N CCE , p L · M s , max ( L ) ⌋ + n CI ) ⁢ mod ⁢ ⌊ N CCE , p / L ⌋ } + i Y p , n sf μ = { 0 otherwise ⌊ K ⋆ N symb CORESET 6 ⌋ ⋆ 2 for ⁢ slot ⁢ n ⁢ 0 where L is the aggregation level used by the first PDCCH; m s,n CI =0, . . . , M s , 0 ( L ) , is the candidate PDCCH sequence number at the aggregation level L; M s , max ( L ) = M s , 0 ( L ) is configured by UE to determine the number of candidate PDCCHs corresponding to the aggregation level L in a search space s; n CI is a carrier sequence number, and is 0; N CCE,p is the number of CCEs used by a CORESET p; N symb CORESET is the number of symbols used by the CORESET; K is the relative location value; n0 is the slot number where the first PDCCH is located; and a value of i is 0−L−1.
  6. 6 . A method performed by user equipment (UE) comprising: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, wherein the configuration parameter includes a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET), and the location of the receiving bandwidth is determined by a reference point which is a bandwidth center of the SSB or CORESET0, and ½ bandwidth capabilities of the UE are determined on two sides of the reference point; the UE receives a first physical downlink control channel (PDCCH) and a second physical downlink control channel (PDCCH) within the receiving bandwidth and determines resource parameters of the first PDCCH and the second PDCCH, and the first PDCCH and the second PDCCH transmit the same downlink control information (DCI), wherein the first PDCCH is associated with a slot of n0 of one SSB with index i, the second PDCCH is associated with the slot of n+1 of the SSB with the index i, the resource parameter of the first PDCCH and the second PDCCH is one or a combination of a control channel element (CCE) sequence number or a candidate PDCCH sequence number or a resource element group (REG) bundle sequence number, and the resource parameter of CCE sequence number of the first PDCCH according to a formula: L · { ( Y p , n sf μ + ⌊ m s , n CI ′ · N CCE , p L · M s , max ( L ) ⌋ + n CI ) ⁢ mod ⁢ ⌊ N CCE , p / L ⌋ } + i ⁢ where for ⁢ Type ⁢ 0 - PDCCH ⁢ CSS , m s , n CI ′ = { m s , n CI otherwise M s , max ( L ) - m s , n CI - 1 for ⁢ slot ⁢ n ⁢ 0 where L is the aggregation level used by the first PDCCH; m s,n CI =0, . . . , M s , 0 ( L ) is the candidate PDCCH sequence number at the aggregation level L; M s , max ( L ) = M s , 0 ( L ) is configured by UE to determine the number of candidate PDCCHs corresponding to the aggregation level L in a search space s; n CI is a carrier sequence number, and is 0; N CCE,p is the number of CCEs used by a CORESET p; N symb CORESET is the number of symbols used by the CORESET; K is a relative location value of the CORESET0 and the SSB; n0 is the slot number where the first PDCCH is located; and a value of i is from 0 to L−1.

Description

TECHNICAL FIELD The present invention relates to the technical field of wireless communications, and in particular to a method performed by user equipment, and corresponding user equipment. BACKGROUND In existing 5G/NR networks, three typical service models are defined: an enhanced mobile broadband (eMBB) service, a massive machine-type communication (mMTC) service, and an ultra-reliable and low latency communication (URLLC) service. In addition to these, there is also a time sensitive communication (TSC) service. An important goal of 5G is to achieve the interconnection industry. 5G interconnection can be a catalyst for a next wave of industrial transformation and digitalization, and can enhance flexibility, productivity, and efficiency, reduce maintenance costs, improve operational security, etc. Devices in such environments include pressure sensors, humidity sensors, thermometer, motion sensors, accelerometers, effectors, and the like. These sensors and effectors need to be connected to 5G wireless access networks and core networks. The literature, including TR 22.804 etc., describe use cases and requirements of a large-scale industrial wireless sensor network (IWSN), which, in addition to including very high requirements on a URLLC service, include requirements on relatively low-end services of relatively small size, and/or a plurality of years of battery life in a wireless state. Requirements on these services are higher than those on a low power wide area network (LPWA), but are lower than those on a URLCC and an eMBB. Similar to the Internet industry, 5G interconnection can become a catalyst for a next wave of smart city innovation. As an example, TSR 22.804 describes use cases and requirements of smart cities. The smart city vertically covers data collection and processing to more efficiently monitor and control city resources, and to provide services to city residents. In particular, deployment of surveillance cameras is an important component of the smart city, and is also an important component of factories and industry. Finally, examples of wearable apparatuses include smart watches/rings, eHealth related apparatuses, medical monitoring apparatuses, etc. One feature of such a scenario is that the apparatus needs to be compact. As a baseline, the requirements on these three use cases are as follows: General Requirements: Apparatus complexity: a main motivation for a new apparatus type is reduced costs and complexity of apparatuses in comparison with eMBB and URLLC apparatuses. Especially in the case of industrial sensors.Apparatus size: most of the use cases require a compact apparatus design.Deployment scenarios: the system should support all FR1/FR2 bands of FDD and TDD. Specific Requirements on Use Cases: Industrial wireless sensors: reference use cases and requirements are described in TR 22.832 and TS 22.104: the communication service availability is 99.99%, and the end-to-end latency is less than 100 milliseconds. The reference bit rate is less than 2 Mbps (possibly asymmetrical, e.g., uplink heavy load), and is smooth for all use cases and apparatuses. The battery should last at least several years. For safety related sensors, latency requirements are lower, 5-10 ms (TR 22.804).Video surveillance: in TSR 22.804, a reference economic video bit rate is 2-4 Mbps, the latency being less than 500 ms, and the reliability being 99% to 99.9%. High-end video, for example, the agriculture requires 7.5-25 Mbps. The service mode may be primarily UL transmission.Wearable apparatuses: a reference bit rate of a smart wearable application may be 5-50 Mbps, and may be at least 2-5 Mbps in DL. A peak bit rate of an apparatus is higher, and is, for example, up to 150 Mbps in a downlink and up to 50 Mbps in an uplink. The battery of the apparatus should last 1-2 weeks.The new requirement scenario has more requirements on network transmission, and especially, a terminal apparatus needs to have the service matching reception capability while meeting constraint conditions such as a smaller size, lower processing complexity, less antennas, a smaller bandwidth, etc. These require that the existing air interface resource configuration method and channel transmission method are improved. SUMMARY In order to address at least part of the aforementioned issues, the present invention provides a method performed by user equipment, and user equipment. A method performed by user equipment according to a first aspect of the present invention comprises: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, the configuration parameter comprising a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET). In the method performed by user equipment according to the first aspect of the present invention, the location of the receiving bandwidth is determined according to a band