WO2020143909A1 - Dispositif client et nœud d'accès au réseau pour configuration tci - Google Patents

Dispositif client et nœud d'accès au réseau pour configuration tci Download PDF

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Publication number
WO2020143909A1
WO2020143909A1 PCT/EP2019/050391 EP2019050391W WO2020143909A1 WO 2020143909 A1 WO2020143909 A1 WO 2020143909A1 EP 2019050391 W EP2019050391 W EP 2019050391W WO 2020143909 A1 WO2020143909 A1 WO 2020143909A1
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WIPO (PCT)
Prior art keywords
tci state
tci
client device
state sets
sets
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PCT/EP2019/050391
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English (en)
Inventor
Wenquan HU
Bengt Lindoff
Panayiotis Papadimitriou
Thorsten Schier
Sha HU
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Huawei Technologies Co., Ltd.
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Priority to PCT/EP2019/050391 priority Critical patent/WO2020143909A1/fr
Publication of WO2020143909A1 publication Critical patent/WO2020143909A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the invention relates to a client device and a network access node for TCI configuration of the client device. Furthermore, the invention also relates to corresponding methods and a computer program.
  • a main function of Physical Downlink Control Channel is to schedule downlink (DL) transmissions on Physical Downlink Shared Channel (PDSCH) and uplink (UL) transmissions on Physical Uplink Shared Channel (PUSCH).
  • the Downlink Control Information (DCI) on the PDCCH includes: Downlink assignments containing at least modulation and coding format, resource allocation, and hybrid-ARQ information related to DL- SCH; and Uplink scheduling grants containing at least modulation and coding format, resource allocation, and hybrid-ARQ information related to UL-SCH.
  • a User Equipment monitors a set of PDCCH candidates in configured monitoring occasions in one or more configured COntrol REsource SETs (CORESETs) according to the corresponding search space configurations.
  • a CORESET consists of a set of Physical Resource Blocks (PRBs) with a time duration of 1 to 3 OFDM symbols.
  • the resource units Resource Element Groups (REGs) and Control Channel Elements (CCEs) are defined within a CORESET with each CCE consisting a set of REGs.
  • Control channels are formed by aggregation of CCEs. Different code rates for the control channels are realized by aggregating different number of CCEs. Interleaved and non-interleaved CCE-to-REG mapping are supported in a CORESET and polar coding is used for the PDCCH.
  • Each REG carrying PDCCH carries its own DMRS.
  • a UE changing its beam or beam link with the network in one cell does not require explicit Radio Resource Control (RRC) signaling to be triggered.
  • the gNB provides via RRC signaling the UE with measurement configuration containing configurations of SSB/CSI resources and resource sets, reports and trigger states for triggering channel and interference measurements and reports.
  • Beam Level Mobility (BLM) is dealt with at lower layers by means of physical layer and Medium Access Control (MAC) layer control signaling, and the RRC is therefore not required to know which beam or beam link is being used at a given point in time.
  • MAC Medium Access Control
  • the UE can be configured with a list of up to M TCI state configurations with the higher layer parameter “PDSCH-Config”, where M depends on the capability of the UE.
  • the TCI state is indicated in a DCI in the PDCCH and is used by the UE to decode the PDSCH.
  • the UE receives an activation command used to map up to 8 TCI states to codepoints, e.g.“000” or“1 1 1 of the DCI field“Transmission Configuration Indication”.
  • MIMO Multiple Input Multiple Output
  • TRP ransmission and Reception Point
  • CSI Channel State Information
  • Type I low-resolution
  • II high-resolution
  • RSs flexible Reference Signals
  • One aspect that can be enhanced is to support multi-TRP or panel transmission including improved reliability and robustness with both ideal and non-ideal backhaul.
  • a design target is to specify DL control signaling enhancement(s) for efficient support of non-coherent joint transmission in multi TRP, panel or beam scenarios.
  • An objective of embodiments of the invention is to provide a solution which mitigates or solves the drawbacks and problems of conventional solutions.
  • Another objective of embodiments of the invention is to provide efficient TCI configuration of client devices in a wireless communication system.
  • a client device for a wireless communication system the client device being configured to
  • TCI transmission configuration indicator
  • An advantage of the client device is that an efficient solution for TCI configuring the client device is provided. Through this TCI configuration of the client device, multiple TCI states can be indicated with less control overhead in the physical layer.
  • each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of the DCI according to a predefined rule.
  • the predefined rule can be given in a standard such as 3GPP NR.
  • An advantage with this implementation form is that the client device easily can detect which TCI state that is used for data reception. Further, less overhead in control signaling is introduced to indicate a specific TCI state.
  • the client device is further configured to
  • a default TCI state set herein is a TCI state set that is pre-configured prior to any later TCI state set indications received from the network access node. Until no explicit indication of a TCI state set has been received, the default TCI state set will be applied by the client device.
  • An advantage with this implementation form is that the client device knows which TCI state set to use when no explicit indication has been received, thereby giving the client device the possibility of optimized data reception.
  • a default TCI state set for a TCI state is a TCI state set comprising the TCI state set if the TCI state is only mapped onto one codepoint associated with a TCI state set.
  • the client device can determine the default TCI state set without any signaling from the network access node, thereby saving radio resources.
  • the client device is further configured to
  • An advantage with this implementation form is that the client device can determine the default TCI state in a simple way and thereby does not need to perform any blind detection and hence saving processing power. Further, the performance of the data reception is guaranteed under the control of the network access node.
  • obtain the default TCI state set in explicit signaling comprises
  • Radio resource control RRC
  • MAC medium access control
  • control signaling can be performed as higher layer signaling and it can be applied by the client device when triggered by such signaling, thereby saving radio resources compared to the case of using lower layer control signaling.
  • the client device is further configured to
  • TCI state set information for the set of data channels or the set of layers of the data channel based on the obtained codepoint
  • An advantage with this implementation form is that the client device without blind detection can determine which TCI state that is used for the data reception and thereby optimize the data reception performance without the use of excessive processing power.
  • the obtained TCI state set information is at least one of: quasi-collocation, QCL, information; spatial filter parameters; and beam link information.
  • obtain the TCI configuration comprises
  • control signaling is made by high layer signaling thereby flexible scheduling is achieved.
  • obtain the subset of TCI state sets comprises
  • An advantage with this implementation form is that the client device knows which subset of TCI state sets than can be used for data reception, thereby reducing the processing complexity in the client device.
  • the client device is further configured to
  • control signaling is made by MAC signaling thereby lower latency can be achieved compared to using RRC signaling.
  • the set of TCI state sets comprises at least two groups of TCI state sets, and wherein TCI state sets in a group of TCI state sets comprises the same number of TCI states and two TCI state sets from different groups of TCI state sets comprises different number of TCI states.
  • TCI state sets can be candidates in the physical layer for physical layer indication as the set of TCI state sets are divided into at least two groups of TCI state sets.
  • the client device is further configured to
  • An advantage with this implementation form is that the client device knows in advance how many TCI states is to be indicated and therefore can tune radio parameters to the current TCI state information and thereby save processing power.
  • obtain the indication comprises
  • An advantage with this implementation form is that lower latency can be achieved by the use of MAC signaling compared to using RRC signaling.
  • the set of TCI state sets comprises a single group of TCI state sets, and wherein at least two TCI state sets in the single group of TCI state sets comprises different number of TCI states.
  • An advantage with this implementation form is that less signaling is needed since beam rank indication is not needed.
  • a network access node for a wireless communication system the network access node being configured to
  • each TCI state set comprises at least one TCI state, and wherein a subset of TCI state sets among the set of TCI state sets is indicated, wherein the subset of TCI state sets comprises activated TCI state sets, and wherein each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a DCI.
  • An advantage of the network access node according to the second aspect is that an efficient solution for TCI configuring the client device is provided. Through this TCI configuration of the client device, multiple TCI states can be indicated with less control overhead in the physical layer.
  • each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of the DCI according to a predefined rule.
  • An advantage with this implementation form is that the client device easily can detect which TCI state that is used for data reception. Further, less overhead in control signaling is introduced to indicate a specific TCI state.
  • the network access node is further configured to
  • the client device can be implicitly configured with the default TCI state set which means that signaling from the network access node is not needed in this respect.
  • An advantage with this implementation form is that the client device will know which TCI state set to use when no explicit indication has been received, thereby giving the client device the possibility of optimized data reception.
  • transmit the TCI configuration comprises
  • control signaling is made by high layer signaling thereby flexible scheduling is achieved.
  • the network access node is further configured to
  • the client device transmits an activation status vector in MAC signaling to the client device, wherein the activation status vector indicates the subset of the set of TCI state sets.
  • the client device will know which subset of TCI state sets than can be used for data reception, reducing the processing complexity in the client device.
  • the set of TCI state sets comprises at least two groups of TCI state sets, and wherein TCI state sets in a group of TCI state sets comprises the same number of TCI states and two TCI state sets from different groups of TCI state sets comprises different number of TCI states.
  • An advantage with this implementation form is that more TCI state sets can be candidates in the physical layer for physical layer indication as the set of TCI state sets are divided into at least two groups of TCI state sets.
  • the network access node is further configured to
  • An advantage with this implementation form is that the client device will know in advance how many TCI states is to be indicated and therefore can tune radio parameters to the current TCI state information and thereby saving processing power.
  • transmit the indication comprises
  • An advantage with this implementation form is that lower latency can be achieved by the use of MAC signaling compared to using RRC signaling.
  • the set of TCI state sets comprises a single group of TCI state sets, and wherein at least two TCI state sets in the single group of TCI state sets comprises different number of TCI states.
  • An advantage with this implementation form is that less signaling is needed since beam rank indication is not needed.
  • the above mentioned and other objectives are achieved with a method for a client device, the method comprises
  • TCI transmission configuration indicator
  • configuration comprising a set of TCI state sets, wherein each TCI state set comprises at least one TCI state; obtaining a subset of TCI state sets among the set of TCI state sets, wherein the subset of TCI state sets comprises activated TCI state sets, and wherein each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a downlink control information, DCI.
  • an implementation form of the method comprises the feature(s) of the corresponding implementation form of the client device.
  • the above mentioned and other objectives are achieved with a method for a network access node, the method comprises
  • each TCI state set comprises at least one TCI state, and wherein a subset of TCI state sets among the set of TCI state sets is indicated, wherein the subset of TCI state sets comprises activated TCI state sets, and wherein each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a DCI.
  • an implementation form of the method comprises the feature(s) of the corresponding implementation form of the network access node.
  • the invention also relates to a computer program, characterized in program code, which when run by at least one processor causes said at least one processor to execute any method according to embodiments of the invention. Further, the invention also relates to a computer program product comprising a computer readable medium and said mentioned computer program, wherein said computer program is included in the computer readable medium, and comprises of one or more from the group: ROM (Read-Only Memory), PROM (Programmable ROM), EPROM (Erasable PROM), Flash memory, EEPROM (Electrically EPROM) and hard disk drive.
  • ROM Read-Only Memory
  • PROM Programmable ROM
  • EPROM Erasable PROM
  • Flash memory Flash memory
  • EEPROM Electrically EPROM
  • - Fig. 1 shows a client device according to an embodiment of the invention
  • FIG. 2 shows a method for a client device according to an embodiment of the invention
  • FIG. 3 shows a network access node according to an embodiment of the invention
  • FIG. 4 shows a method for a network access node according to an embodiment of the invention
  • FIG. 5 shows a wireless communication system according to an embodiment of the invention
  • Fig. 6a and 6b illustrate single DCI scheduling of multibeam transmissions in two different transmission scenarios
  • FIG. 8 illustrates a further embodiment of the invention.
  • FIG. 9 illustrates a further embodiment of the invention.
  • Ultra Reliable and Low Latency Communication is an important service scenario introduced in NR.
  • multiple-TRP or multiple-beam based data transmissions will be a useful technique to support such URLLC services. Therefore, the inventors have realized the need for an efficient TCI configuration of UEs. Especially, a mechanism for efficient TCI configuration indication for multiple PDSCHs is of high importance.
  • Fig. 1 shows a client device 100 according to an embodiment of the invention.
  • the client device 100 comprises a processor 102, a transceiver 104 and a memory 106.
  • the processor 102 is coupled to the transceiver 104 and the memory 106 by communication means 108 known in the art.
  • the client device 100 further comprises an antenna or antenna array 1 10 coupled to the transceiver 104, which means that the client device 100 is configured for wireless communications in a wireless communication system. That the client device 100 is configured to perform certain actions can in this disclosure be understood to mean that the client device 100 comprises suitable means, such as e.g. the processor 102 and the transceiver 104, configured to perform said actions.
  • the client device 100 is configured to obtain a TCI configuration comprising a set of TCI state sets. Each TCI state set comprises at least one TCI state.
  • the client device 100 is further configured to obtain a subset of TCI state sets among the set of TCI state sets.
  • the subset of TCI state sets comprises activated TCI state sets, and wherein each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a DCI.
  • Fig. 2 shows a flow chart of a corresponding method 200 which may be executed in a client device 100, such as the one shown in Fig. 1.
  • the method 200 comprises obtaining 202 a TCI configuration comprising a set of TCI state sets, wherein each TCI state set comprises at least one TCI state.
  • the method 200 further comprises obtaining 204 a subset of TCI state sets among the set of TCI state sets, wherein the subset of TCI state sets comprises activated TCI state sets, and wherein each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a DCI .
  • Fig. 3 shows a network access node 300 according to an embodiment of the invention.
  • the network access node 300 comprises a processor 302, a transceiver 304 and a memory 306.
  • the processor 302 is coupled to the transceiver 304 and the memory 306 by communication means 308 known in the art.
  • the network access node 300 may be configured for both wireless and wired communications in wireless and wired communication systems, respectively.
  • the wireless communication capability is provided with an antenna or antenna array 310 coupled to the transceiver 304, while the wired communication capability is provided with a wired communication interface 312 coupled to the transceiver 304.
  • the antenna array is configured for MIMO transmission using multiple beams, multiple beams links or multiple panels known in the art.
  • the network access node 300 can comprise one or more TRPs for communication with client devices.
  • the network access node 300 is configured to perform certain actions can in this disclosure be understood to mean that the network access node 300 comprises suitable means, such as e.g. the processor 302 and the transceiver 304, configured to perform said actions.
  • the network access node 300 is configured to transmit a TCI configuration comprising a set of TCI state sets to a client device 100.
  • Each TCI state set comprises at least one TCI state, and wherein a subset of TCI state sets among the set of TCI state sets is indicated.
  • the subset of TCI state sets comprises activated TCI state sets, and each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a DCI.
  • Fig. 4 shows a flow chart of a corresponding method 400 which may be executed in a network access node 300, such as the one shown in Fig. 3.
  • the method 400 comprises transmitting 402 a TCI configuration comprising a set of TCI state sets to a client device 100.
  • Each TCI state set comprises at least one TCI state, and wherein a subset of TCI state sets among the set of TCI state sets is indicated.
  • the subset of TCI state sets comprises activated TCI state sets, and each TCI state set in the subset of TCI state sets is mapped onto a codepoint of a TCI field of a DCI.
  • Fig. 5 shows a wireless communication system 500 according to an embodiment of the invention.
  • the wireless communication system 500 comprises a client device 100 and a network access node 300 configured to operate in the wireless communication system 500.
  • the wireless communication system 500 shown in Fig. 5 only comprises one client device 100 and one network access node 300.
  • the wireless communication system 500 may comprise any number of client devices 100 and any number of network access nodes 300 without deviating from the scope of the invention.
  • the client device 100 is configured to obtain TCI configuration for UL or DL data transmission in data channels, such as PDSCH and PUSCH.
  • the TCI configuration is obtained by the client device 100 through RRC signaling from the network access node 300 as illustrated in Fig. 5.
  • the subset of TCI state sets is selected by the network access node 300 when TCI configuration is signaled to the client device 100.
  • the client device 100 receives a DCI associated with a set of data channels or alternatively a set of layers of a data channel (e.g. PDSCH and PUSCH) and addressed to the client device 100.
  • the TCI field of the received DCI is decoded so that the client device 100 obtains a codepoint which is used for deriving TCI state set information for the set of data channels or the set of layers of the data channel.
  • the client device 100 receives DL data transmission(s) in the set of data channels according to the obtained TCI state set information.
  • the obtained TCI state set information can be at least one of: quasi-collocation (QCL) information; spatial filter parameters; and beam link information for the data transmissions in the set of data channels.
  • QCL quasi-collocation
  • the client device 100 tunes its receiver block to the mentioned TCI state set information for receiving the DL data transmission.
  • the client device 100 can obtain the subset of the set of TCI state sets based on an activation status vector in bitmap form.
  • the client device 100 is configured to receive the activation status vector in MAC signaling, e.g. in a MAC CE, from the network access node 300 as shown in Fig. 5.
  • Fig. 6a and 6b illustrate two non-limiting exemplary network deployments in which embodiments of the invention can be applied.
  • two PDSCHs are transmitted to the client device 100 through two different beams associated with two different PDSCH, i.e. PDSCH1 and PDSCH2.
  • the client device 100 is however scheduled by a single PDCCH transmitted from one TRP, i.e. TRP1 , in the example in Fig. 6a.
  • TRP1 the example in Fig. 6a.
  • PDSCH 1 and PDSCH2 are transmitted from two respective TRPs, i.e. TRP1 and TRP2, however scheduled by a single PDCCH transmitted from TRP1.
  • the client device 100 is configured with one or more TCI state set groups or sequences, where each TCI state set comprises one or more TCI states.
  • a beam rank is the number of TCI states in one TCI state set.
  • the TCI state set groups can be generated by the network access node 300, e.g. based on CSI feedback from the client device 100.
  • Fig. 7 illustrates an embodiment of the invention.
  • the client device 100 is configured with one TCI state set for each beam rank.
  • the set of TCI state sets comprises at least two groups of TCI state sets, and TCI state sets in a group of TCI state sets comprises the same number of TCI states and two TCI state sets from different groups of TCI state sets comprises different number of TCI states.
  • a MAC activation command (e.g. MAC CE) is used to map a number of TCI state sets to codepoints of the DCI field’’Transmission Configuration Indication”.
  • the beam rank can be indicated to the client device 100 by another MAC CE command about how many TCI states will be scheduled in a single DCI.
  • RRC signaling for beam rank 1 , i.e. the single beam case, existing method can be adopted to configure the TCI state information for PDSCH.
  • beam rank 2 the following RRC configuration can be used to configure possible TCI state set sequence/candidate:
  • tci-StatesToAddModl_istBeamrank2 SEQUENCE (SIZE(1..maxNrofTCI-State-Sets)) OF TCI-State set
  • tci-StatesToAddModl_istBeamrank2 is a sequence type signaling and elements of the SEQUENCE are the TCI state sets, maxNrofTCI-State-Sets defines the largest size of signaling, and OF TCI-State set defines the property of the signaling.
  • a MAC CE command can be used to activate a subset of the set of TCI state sets and map the activated subset of TCI state sets to the codepoints of the DCI field“Transmission Configuration Indication” for one beam rank.
  • the client device 100 becomes RCI configured with a set of TCI state sets by RRC signaling, one per beam rank, from a network access node 300.
  • the TCI state sets are grouped according to the number of TCI states in a TCI set.
  • Fig. 7 shows two TCI state set groups, i.e. TCI state set group 1 and TCI state set group 2.
  • the client device 100 can obtain an indication for deriving one activated group of TCI state sets among the at least two groups of TCI state sets, e.g. in MAC CE signaling from a network access node 300.
  • the client device 100 therefore receives a MAC CE used to activate a specific beam rank and a subset of the set of TCI state sets, i.e. TO, T1. T(N-1 ).
  • the activated subset of TCI state sets is mapped to codepoints of the DCI field“Transmission Configuration Indication”, starting from the first activated TCI state set, i.e. T1 in this example.
  • the client device 100 detects a“Transmission Configuration Indication” in a DCI with bitmap ⁇ 00’, given that beam rank 2 is activated.
  • step III) of Fig. 7 the client device 100 derives TCI information for the set of data channels based on the codepoint, in this example the client device 100 knows there are two QCL information which are Beam #3 and Beam #5 for the associated set of data channels.
  • Fig. 8 illustrates a further embodiment of the invention.
  • a client device 100 is configured with one TCI state set group, where some TCI state sets in the group have a first beam rank and other TCI state sets in the group have a second beam rank.
  • the set of TCI state sets comprises a single group of TCI state sets, and at least two TCI state sets in the single group of TCI state sets comprises different number of TCI states.
  • RRC signaling the following RRC configuration can be updated to configure a TCI state set group to the client device 100:
  • tci-StatesToAddModList is an updated signaling extending the current TCI signaling in NR Rel 15.
  • a MAC CE command can be used to activate a subset of TCI state sets among the set of TCI state sets and map the activated subset of TCI state sets to the codepoints of the DCI field“Transmission Configuration Indication”.
  • step I) of Fig. 8 in the RRC layer a group of TCI state sets are configured for the client device 100 by RRC signaling from the network access node 300.
  • a MAC CE command can be used to activate a subset of TCI state sets and map these TCI state sets to codepoints of the DCI field“Transmission Configuration Indication” starting from the first activated TCI state set.
  • step III) of Fig. 8 the client device 100 detects a“Transmission Configuration Indication” with bitmap ⁇ 00T in a DCI, and therefore knows that there are two QCL information corresponding to Beam #2 and Beam #3 for the associated two PDSCHs or two layers of a single PDSCH.
  • Fig. 9 illustrates a further embodiment of the invention.
  • a default TCI state set for a TCI state is a TCI state set comprising the TCI state set if the TCI state is only mapped onto one codepoint associated with a TCI state set.
  • the client device 100 obtains a default TCI state set for a TCI state in explicit signaling if the TCI state is mapped onto more than one codepoint associated with a TCI state set.
  • the default TCI state set can be received in RRC signaling or MAC signaling from a network access node 300.
  • codepoints 101 , 110 and 1 11 comprises two beams each.
  • beam Beam #3 is both in 101 and 110 which means that explicit signaling is needed so that the client device 100 can determine which one of 101 or 1 10 is the default TCI state set for Beam #3, i.e. set Beam #3 and Beam #4 or Beam #3 and Beam #5.
  • the client device 100 assumes that the TCI state for the PDSCH is dependent on the TCI state applied for the CORESET used for the PDCCH transmission and a default TCI state set.
  • the default QCL assumption follows the TCI state of the CORESET with the lowest identity (ID) in the latest slot in which one or more CORESETs are configured and a corresponding default TCI state set of that default QCL assumption.
  • step I) of Fig. 9 in the RRC layer two groups of TCI state sets. i.e. TCI state set group 1 and TCI state set group 2, are configured for the client device 100 by RRC signaling from the network access node 300.
  • step II) of Fig. 9 among all the activated TCI state sets which are mapped to the DCI field and with beam rank larger than 1 , each TCI state corresponds to a default TCI state set.
  • Set2 is configured as a default TCI state set for Beam #3.
  • the same logic applies to the other beams and can be configured with its own default TCI state set.
  • step III) of Fig. 9 when the client device 100 detects a PDCCH, the client device 100 in step Ilia) derives a default QCL assumption for a first data channel from the PDCCH. Based on the derived default QCL assumption for the first data channel and the default TCI state set corresponding to the derived default QCL assumption, the client device 100 in step Nib) can derive the QCL assumption for a second data channel (or further data channels) in the set of data channels associated with the PDCCH.
  • the client device 100 if a PDCCH is detected on Beam #3, the client device 100 will derive the TCI state with Beam #3 for a PDSCH transmitted from a TRP, the another PDSCH transmitted from another TRP will be from Beam #5.
  • the client device 100 herein, may be denoted as a user device, a User Equipment (UE), a mobile station, an internet of things (loT) device, a sensor device, a wireless terminal and/or a mobile terminal, is enabled to communicate wirelessly in a wireless communication system, sometimes also referred to as a cellular radio system.
  • the UEs may further be referred to as mobile telephones, cellular telephones, computer tablets or laptops with wireless capability.
  • the UEs in this context may be, for example, portable, pocket-storable, hand-held, computer- comprised, or vehicle-mounted mobile devices, enabled to communicate voice and/or data, via the radio access network, with another entity, such as another receiver or a server.
  • the UE can be a Station (STA), which is any device that contains an IEEE 802.1 1 -conformant Media Access Control (MAC) and Physical Layer (PHY) interface to the Wireless Medium (WM).
  • STA Station
  • MAC Media Access Control
  • PHY Physical Layer
  • the UE may also be configured for communication in 3GPP related LTE and LTE-Advanced, in WiMAX and its evolution, and in fifth generation wireless technologies, such as New Radio.
  • the network access node 300 herein may also be denoted as a radio network access node, an access network access node, an access point, or a base station, e.g. a Radio Base Station (RBS), which in some networks may be referred to as transmitter,“gNB”,“gNodeB”,“eNB”, “eNodeB”,“NodeB” or“B node”, depending on the technology and terminology used.
  • RBS Radio Base Station
  • the radio network access nodes may be of different classes such as e.g. macro eNodeB, home eNodeB or pico base station, based on transmission power and thereby also cell size.
  • the radio network access node can be a Station (STA), which is any device that contains an IEEE 802.1 1 -conformant Media Access Control (MAC) and Physical Layer (PHY) interface to the Wireless Medium (WM).
  • STA Station
  • MAC Media Access Control
  • PHY Physical Layer
  • the radio network access node may also be a base station corresponding to the fifth generation (5G) wireless systems.
  • any method according to embodiments of the invention may be implemented in a computer program, having code means, which when run by processing means causes the processing means to execute the steps of the method.
  • the computer program is included in a computer readable medium of a computer program product.
  • the computer readable medium may comprise essentially any memory, such as a ROM (Read-Only Memory), a PROM (Programmable Read-Only Memory), an EPROM (Erasable PROM), a Flash memory, an EEPROM (Electrically Erasable PROM), or a hard disk drive.
  • embodiments of the client device 100 and the network access node 300 comprises the necessary communication capabilities in the form of e.g., functions, means, units, elements, etc., for performing the solution.
  • means, units, elements and functions are: processors, memory, buffers, control logic, encoders, decoders, rate matchers, de-rate matchers, mapping units, multipliers, decision units, selecting units, switches, interleavers, de-interleavers, modulators, demodulators, inputs, outputs, antennas, amplifiers, receiver units, transmitter units, DSPs, MSDs, TCM encoder, TCM decoder, power supply units, power feeders, communication interfaces, communication protocols, etc. which are suitably arranged togetherfor performing the solution.
  • the processor(s) of the client device 100 and the network access node 300 may comprise, e.g., one or more instances of a Central Processing Unit (CPU), a processing unit, a processing circuit, a processor, an Application Specific Integrated Circuit (ASIC), a microprocessor, or other processing logic that may interpret and execute instructions.
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the expression “processor” may thus represent a processing circuitry comprising a plurality of processing circuits, such as, e.g., any, some or all of the ones mentioned above.
  • the processing circuitry may further perform data processing functions for inputting, outputting, and processing of data comprising data buffering and device control functions, such as call processing control, user interface control, or the like.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un dispositif client et un nœud d'accès au réseau pour une configuration d'indication de configuration de transmission (TCI). Le dispositif client obtient une configuration d'indicateur de configuration de transmission, TCI, comprenant un ensemble d'ensembles d'états TCI, chaque ensemble d'états TCI comprenant au moins un état TCI. Le dispositif client obtient en outre un sous-ensemble d'ensembles d'états TCI parmi l'ensemble d'ensembles d'états TCI, le sous-ensemble d'ensembles d'états TCI comprenant des ensembles d'états TCI activés, et chaque ensemble d'états TCI dans le sous-ensemble d'ensembles d'états TCI étant mappé sur un point de code d'un champ TCI d'informations de commande de liaison descendante, DCI. La configuration TCI peut être transmise par le noeud d'accès au réseau dans une signalisation RRC. Ainsi, une solution efficace pour une TCI configurant le dispositif client est fournie. En outre, la présente invention concerne également des procédés correspondants et un programme informatique.
PCT/EP2019/050391 2019-01-09 2019-01-09 Dispositif client et nœud d'accès au réseau pour configuration tci WO2020143909A1 (fr)

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US11489562B2 (en) * 2019-08-02 2022-11-01 Qualcomm Incorporated Signaling to assist waveform selection
US11510082B2 (en) * 2019-03-29 2022-11-22 Qualcomm Incorporated Beam indication reuse
WO2023284796A1 (fr) * 2021-07-16 2023-01-19 维沃移动通信有限公司 Procédé et appareil d'indication d'état de tci, terminal, et dispositif côté réseau
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WO2023151649A1 (fr) * 2022-02-11 2023-08-17 维沃移动通信有限公司 Procédé d'activation d'informations et terminal ainsi que dispositif côté réseau
WO2023159368A1 (fr) * 2022-02-23 2023-08-31 Qualcomm Incorporated Mise en correspondance entre un tci et un id de trp unifiés activés
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WO2023206293A1 (fr) * 2022-04-28 2023-11-02 富士通株式会社 Appareil et procédé d'envoi de signal et appareil et procédé de réception de signal
WO2023219388A1 (fr) * 2022-05-09 2023-11-16 Samsung Electronics Co., Ltd. Procédé et appareil d'indication et de mise à jour d'état de tci par signalisation dynamique
US12022315B2 (en) 2022-12-22 2024-06-25 Qualcomm Incorporated Avoiding TCI reselection due to active BWP switching

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11510082B2 (en) * 2019-03-29 2022-11-22 Qualcomm Incorporated Beam indication reuse
US11540158B2 (en) 2019-03-29 2022-12-27 Qualcomm Incorporated Avoiding TCI reselection due to active BWP switching
US11489562B2 (en) * 2019-08-02 2022-11-01 Qualcomm Incorporated Signaling to assist waveform selection
US12010695B2 (en) * 2020-05-14 2024-06-11 Ofinno, Llc Uplink beam indication with activated beams
US20210360594A1 (en) * 2020-05-14 2021-11-18 Jonghyun Park Uplink Beam Indication with Activated Beams
WO2022029367A1 (fr) * 2020-08-07 2022-02-10 Nokia Technologies Oy Utilisation de sous-ensembles d'état d'indication de configuration de transmission pour la communication sans fil
WO2022144833A1 (fr) * 2020-12-30 2022-07-07 Telefonaktiebolaget Lm Ericsson (Publ) Activation d'état de tci de dl et d'état de tci d'ul à base de dci
WO2022144026A1 (fr) * 2021-01-04 2022-07-07 FG Innovation Company Limited Procédé de configuration d'états de tci d'ue et ue l'utilisant
WO2023284796A1 (fr) * 2021-07-16 2023-01-19 维沃移动通信有限公司 Procédé et appareil d'indication d'état de tci, terminal, et dispositif côté réseau
WO2023010511A1 (fr) * 2021-08-06 2023-02-09 Qualcomm Incorporated Activation et désactivation de configuration de faisceau sous plusieurs opérations de point de d'émission-réception (trp)
WO2023151649A1 (fr) * 2022-02-11 2023-08-17 维沃移动通信有限公司 Procédé d'activation d'informations et terminal ainsi que dispositif côté réseau
WO2023159368A1 (fr) * 2022-02-23 2023-08-31 Qualcomm Incorporated Mise en correspondance entre un tci et un id de trp unifiés activés
WO2023168651A1 (fr) * 2022-03-10 2023-09-14 Zte Corporation Procédés et systèmes pour structure d'indicateur de configuration de transmission améliorée
WO2023206293A1 (fr) * 2022-04-28 2023-11-02 富士通株式会社 Appareil et procédé d'envoi de signal et appareil et procédé de réception de signal
WO2023219388A1 (fr) * 2022-05-09 2023-11-16 Samsung Electronics Co., Ltd. Procédé et appareil d'indication et de mise à jour d'état de tci par signalisation dynamique
US12022315B2 (en) 2022-12-22 2024-06-25 Qualcomm Incorporated Avoiding TCI reselection due to active BWP switching

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