CN116489803A

CN116489803A - Electronic device and method for wireless communication, computer-readable storage medium

Info

Publication number: CN116489803A
Application number: CN202210041955.6A
Authority: CN
Inventors: 崔琪楣; 朱振杰; 田文莎; 李浩进; 樊婷婷
Original assignee: Sony Group Corp
Current assignee: Sony Group Corp
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2023-07-25
Also published as: WO2023134570A1

Abstract

The present disclosure provides an electronic device and method for wireless communication, a computer-readable storage medium. Wherein the electronic device comprises processing circuitry configured to: and dynamically mapping a source reference signal corresponding to the transmission configuration indication state and a reference signal corresponding to the beam based on a beam measurement result of a related beam reported by the user equipment in the service range of the device related to the electronic equipment so as to carry out subsequent communication between the electronic equipment and the user equipment.

Description

Electronic device and method for wireless communication, computer-readable storage medium

Technical Field

The present disclosure relates to the field of wireless communication technology, and in particular, to an electronic device and method for wireless communication and a computer readable storage medium. And more particularly to dynamically mapping source reference signals corresponding to Transmission Configuration Indication (TCI) states and reference signals corresponding to beams based on beam measurements.

Background

In wireless communication, in order to compensate for the larger path loss, narrower beams will be used, and thus the number of beams will be increasing. In the related art, the ID of the source reference signal and the ID of the reference signal corresponding to the beam in each TCI state are in a one-to-one fixed relationship, and thus it is difficult to improve communication efficiency.

Disclosure of Invention

The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

According to one aspect of the present disclosure, there is provided an electronic device for wireless communication, comprising processing circuitry configured to: and dynamically mapping a source reference signal corresponding to the TCI state and a reference signal corresponding to the beam based on a beam measurement result of a related beam reported by the user equipment in the service range of the device related to the electronic equipment so as to carry out subsequent communication between the electronic equipment and the user equipment.

In the embodiment of the disclosure, the electronic device dynamically maps the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam based on the beam measurement result, so that the communication efficiency can be improved.

According to another aspect of the present disclosure, there is provided an electronic device for wireless communication, comprising processing circuitry configured to: and reporting the beam measurement result of the related beam to the network side equipment, so that the network side equipment dynamically maps the source reference signal corresponding to the transmission configuration indication TCI state and the reference signal corresponding to the beam based on the beam measurement result, and the electronic equipment is used for carrying out subsequent communication with the network side equipment based on the dynamic mapping, wherein the network side equipment provides services for devices related to the electronic equipment.

In the embodiment of the disclosure, the electronic device reports the beam measurement result of the related beam to the network side device, so that the network side device dynamically maps the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam, thereby improving the communication efficiency.

According to another aspect of the present disclosure, there is provided a method for wireless communication, comprising: and dynamically mapping a source reference signal corresponding to the transmission configuration indication TCI state and a reference signal corresponding to the beam based on a beam measurement result of a related beam reported by user equipment in a service range of a device related to the electronic equipment so as to carry out subsequent communication between the electronic equipment and the user equipment.

According to another aspect of the present disclosure, there is provided a method for wireless communication, comprising: the electronic equipment reports a beam measurement result of a related beam to the network side equipment, so that the network side equipment dynamically maps a source reference signal corresponding to the transmission configuration indication TCI state and a reference signal corresponding to the beam based on the beam measurement result, and the source reference signal is used for subsequent communication between the electronic equipment and the network side equipment, wherein the network side equipment provides services for devices related to the electronic equipment.

According to other aspects of the present invention, there are also provided a computer program code and a computer program product for implementing the above-mentioned method for wireless communication, and a computer readable storage medium having recorded thereon the computer program code for implementing the above-mentioned method for wireless communication.

These and other advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings.

Drawings

To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings. The accompanying drawings are incorporated in and form a part of this specification, together with the detailed description below. Elements having the same function and structure are denoted by the same reference numerals. It is appreciated that these drawings depict only typical examples of the invention and are therefore not to be considered limiting of its scope. In the drawings:

FIG. 1 illustrates a functional block diagram of an electronic device for wireless communication according to one embodiment of the present disclosure;

fig. 2 is a diagram illustrating an example flow of dynamically mapping a source reference signal and a reference signal corresponding to a beam based on beam measurements in accordance with an embodiment of the present disclosure;

3A-3D are diagrams illustrating examples of dynamically mapping a source reference signal and a reference signal corresponding to a beam based on beam measurements according to embodiments of the present disclosure;

fig. 4 is a diagram illustrating an example of determining a target reference signal based on a source reference signal and beam measurements according to an embodiment of the present disclosure;

fig. 5 is an example signaling flow illustrating TCI status indication between an electronic device and a user device according to an embodiment of the present disclosure;

fig. 6 illustrates a functional block diagram of an electronic device for wireless communication according to another embodiment of the present disclosure;

FIG. 7 illustrates an example of an electronic device being configured and activated with an indicated TCI state in accordance with an embodiment of the present disclosure;

FIG. 8 illustrates an example of a flow for an electronic device to receive a target reference signal according to an indicated TCI state in accordance with an embodiment of the present disclosure;

fig. 9 illustrates a flow chart of a method for wireless communication according to one embodiment of the present disclosure;

fig. 10 illustrates a flow chart of a method for wireless communication according to another embodiment of the present disclosure;

fig. 11 is a block diagram showing a first example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied;

Fig. 12 is a block diagram showing a second example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied;

fig. 13 is a block diagram showing an example of a schematic configuration of a smart phone to which the technology of the present disclosure can be applied;

fig. 14 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied; and

FIG. 15 is a block diagram of an exemplary architecture of a general-purpose personal computer in which methods and/or apparatus and/or systems according to embodiments of the present invention may be implemented.

Detailed Description

Exemplary embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made in order to achieve the developer's specific goals, such as compliance with system-and business-related constraints, and that these constraints will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, while other details not greatly related to the present invention are omitted.

Fig. 1 illustrates a functional block diagram of an electronic device for wireless communication according to one embodiment of the present disclosure.

As shown in fig. 1, the electronic device 100 includes a processing unit 101, and the processing unit 101 may dynamically map a source reference signal corresponding to a Transmission Configuration Indication (TCI) state and a reference signal corresponding to a beam based on a beam measurement result of a related beam reported by a user device within a service range of an apparatus related to the electronic device 100, so as to perform subsequent communication between the electronic device 100 and the user device.

Wherein the processing unit 101 may be implemented by one or more processing circuits, which may be implemented as a chip, for example.

The electronic device 100 may be provided as a network-side device in a wireless communication system, and specifically may be provided at a base station side or communicatively connected to a base station, for example. In the case where the electronic apparatus 100 is provided on the base station side or is communicably connected to the base station, the device related to the electronic apparatus 100 may be the base station. Here, it should also be noted that the electronic device 100 may be implemented at a chip level or may also be implemented at a device level. For example, the electronic device 100 may operate as a base station itself, and may also include external devices such as memory, transceivers (not shown), and so forth. The memory may be used to store programs and related data information that the base station needs to perform to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., user Equipment (UE), other base stations, etc.), the implementation of the transceiver is not particularly limited herein.

As an example, the base station may be an eNB or a gNB, for example.

The wireless communication system according to the present disclosure may be a 5G NR (New Radio) communication system. Further, a wireless communication system according to the present disclosure may include a Non-terrestrial network (Non-terrestrial network, NTN). Optionally, the wireless communication system according to the present disclosure may further comprise a terrestrial network (Terrestrial network, TN). In addition, it will be appreciated by those skilled in the art that the wireless communication system according to the present disclosure may also be a 4G or 3G communication system.

For example, the source reference signal corresponding to the TCI state may be a source reference signal included in the TCI state.

The TCI state has a structure of { RS1|qcl-Type 1, rs2|qcl-Type 2} or { RS1|qcl-Type 1}, where RS1 and RS2 are identification information (e.g., ID) of a source reference signal (e.g., a downlink reference signal), and QCL-Type 1 and QCL-Type 2 are QCL (quasi co-located) types. Each TCI state may include 1 or 2 source reference signals and QCL types corresponding thereto. The QCL type may be one of 4 QCL types (QCL types a-D).

As an example, the processing unit 101 may be configured to send a reference signal set for downlink beam measurement to the user equipment, where the reference signal set includes M reference signals corresponding to M beams, M is a positive integer greater than or equal to N, and receive the beam measurement result reported by the user equipment based on the reference signal set. Where N is the total number of beams included in the beam measurement result reported by the user equipment to the electronic device 100.

For example, the electronic device 100 may rank the beams included in the beam measurements to obtain N ordered beams, where the N ordered beams have respective numbers from 0 to N-1 in turn. The electronic device 100 may map the reference signals corresponding to q beams numbered from 0 to q-1 with the source reference signal having an ID of 0, map the reference signals corresponding to q beams numbered from q to 2q-1 with the source reference signal having an ID of 1, map the reference signals corresponding to q beams numbered from 2q to 3q-1 with the source reference signal having an ID of 2, and so on until TCI states are configured for all N beams. Then, the electronic device 100 may map the remaining beams, which are not configured with the TCI state, among the M beams in order of their IDs, one group each of q in order with the remaining IDs of the source reference signal, respectively, where q is a positive integer greater than or equal to 1 and less than or equal to N.

Other ways of dynamically mapping the source reference signals corresponding to TCI states and the reference signals corresponding to beams based on beam measurements will also be apparent to those skilled in the art and will not be further described herein.

In the embodiment according to the present disclosure, the electronic device 100 dynamically maps the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam based on the beam measurement result, so that the communication efficiency can be improved.

For example, the electronic device 100 may dynamically map the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam each time a beam measurement is received from the user device. That is, the electronic device 100 may update the dynamic mapping relationship between the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam based on the updated beam measurement result.

For example, in the 52.6-71GHz band, to compensate for the larger path loss, a narrower beam would be used, so the number of beams would be much greater than in the 5/6GHz band. For example, the electronic device 100 may transmit m=128 beams to the user device.

As an example, the source reference signal may include a Synchronization Signal Block (SSB) or a channel state information reference signal (CSI-RS).

As an example, the processing unit 101 may be configured to dynamically map the source reference signal and reference signals corresponding to P beams of all N beams included in the beam measurement result, thereby configuring a TCI state for the P beams, where N is a positive integer greater than or equal to 1 and P is a positive integer less than or equal to N. That is, the electronic device 100 dynamically maps the source reference signal and the reference signal corresponding to at least some of all the beams included in the beam measurement result.

In the prior art, the total number of beams N included in the beam measurement report is one of {1,2,3,4}, and the case where N is 8 or 16 is currently being discussed.

Hereinafter, the "source reference signal" is sometimes referred to as "QCL source reference signal", and the "reference signal corresponding to the beam" is sometimes referred to as "actual reference signal".

In the prior art, for example, in R16, the maximum number of TCI states supported per bandwidth part (BWP) is 128, the QCL source reference signal ID in each TCI state is in a one-to-one fixed relationship with the actual reference signal ID, and the current 128 TCI states can only support an indication of up to 64 beams. For example, QCL source reference signal id#0 in TCI state corresponds to actual reference signal id#0, QCL source reference signal id#1 in TCI state corresponds to actual reference signal id#1, …, and QCL source reference signal id#63 in TCI state corresponds to actual reference signal id#63. As mentioned above, for example, in the 52.6-71GHz band, a narrower beam will be used, and therefore the number of beams will be much greater than in the 5/6GHz band. So an indication that the existing 128 TCI states can only support up to 64 beams would not match a greatly increased number of beams. For example, in the case of using a narrower beam (e.g., using m=128 beams), QCL source reference signals id#0 to id#63 in the TCI state cannot be used to indicate an actual reference signal having an ID equal to or greater than 64 (i.e., QCL source reference signals id#0 to id#63 in the TCI state cannot be used to indicate a beam corresponding to an actual reference signal having an ID equal to or greater than 64).

However, in the embodiment according to the present disclosure, the electronic device 100 dynamically maps only the source reference signal and the reference signals corresponding to the P beams, avoiding configuring the TCI state for the M beams, so that the TCI state is implemented to indicate the actual reference signal with a larger ID while maintaining the current total number, that is, the TCI state is implemented to indicate the more beams while maintaining the current total number, and thus no additional bits are required to be added for indicating the ID of the TCI state, thereby enabling to reduce the overhead. As will be appreciated by those skilled in the art, for example, in the case of m=128, the IDs of the reference signals corresponding to the N beams included in the beam measurement result may be any ID between ID #0 to ID # 127. For example, assuming q=1, the IDs of the reference signals (actual reference signals) corresponding to N (e.g., n=4) beams included in the beam measurement result are ID #12, ID #69, ID #85, ID #120, and p=4, respectively. The electronic device 100 maps, for example, an actual reference signal of ID #12 with a source reference signal of ID #0, an actual reference signal of ID #69 with a source reference signal of ID #1, an actual reference signal of ID #85 with a source reference signal of ID #2, and an actual reference signal of ID #120 with a source reference signal of ID #3, thereby realizing an actual reference signal with a TCI status indication ID of 64 or more (in this example, ID #69, ID #85, ID # 120).

As an example, the dynamic mapping may include: the N beams are arranged in descending order of beam quality to obtain ordered N beams, wherein the ordered N beams sequentially have corresponding numbers from 0 to N-1, reference signals corresponding to x beams with numbers from 0 to x-1 are all mapped with source reference signals with ID being I, reference signals corresponding to x beams with numbers from x to 2x-1 are all mapped with source reference signals with ID being I+1, reference signals corresponding to x beams with numbers from 2x to 3x-1 are all mapped with source reference signals with ID being I+2, and so on until TCI states are configured for P beams, wherein x is a positive integer greater than or equal to 1 and less than or equal to P, I is a positive integer greater than or equal to 0 and less than or equal to J-P, and J is the maximum number of beams that can be represented by the maximum number of TCI states configured for the user equipment within each bandwidth portion BWP.

That is, for the N beams that are ordered, the reference signals corresponding to the group of beams are mapped to the source reference signals of the same ID in a group of x beams.

If I is not equal to 0, the electronic device 100 informs the user equipment of the value of I, for example, by adding a new bit in Radio Resource Control (RRC) signaling. If I is equal to 0, the default is that the user equipment is not required to be notified of the value of I.

In the prior art, J is 64, i.e., as described above, the TCI state in the prior art can only support indications of up to 64 beams.

As an example, the dynamic mapping may include: and under the condition that P is not divided by x, if the number of the beams which are in the rest and are not configured with TCI states in the top P beams in the ordered N beams is less than x, mapping the reference signals corresponding to the beams which are in the rest and are not configured with TCI states with the same source reference signal.

For example, the value of x may be specifically configured according to different transmission requirements (e.g., transmission reliability, etc.).

Fig. 2 is a diagram illustrating an example flow of dynamically mapping a source reference signal and a reference signal corresponding to a beam based on beam measurements in accordance with an embodiment of the present disclosure. In fig. 2, only an example flow of dynamically mapping a source reference signal and reference signals corresponding to P beams among the beams included in the beam measurement result is shown for simplicity.

In S201, it is determined whether all P beams are mapped with the source reference signal (i.e., whether TCI states are configured for all P beams).

If no is determined in S201, the process proceeds to S202.

In S202, it is determined whether the number of beams in which the TCI state is not configured among the P beams is greater than or equal to x. If yes is determined in S202, the process proceeds to S203.

In S203, for the N ordered beams, which are obtained by arranging the beams included in the beam measurement result in descending order of beam quality, the reference signals corresponding to the group of beams are mapped to the same source reference signal (i.e., source reference signals of the same ID) in a group of x beams.

S201 to S203 are repeated until the number of beams for which the TCI state is not configured is less than x, and the process proceeds to S204.

In S204, all reference signals corresponding to the remaining beams not configured with the TCI state are mapped with the same source reference signal, so that all P beams are mapped with the source reference signal.

In the case where all P beams are mapped with the source reference signal, the process proceeds to S205.

In S205, the mapped TCI state is indicated to the user equipment.

Fig. 3A-3D are diagrams illustrating examples of dynamically mapping a source reference signal and a reference signal corresponding to a beam based on beam measurements according to embodiments of the present disclosure. In fig. 3A-3D, let n=8 and i=0, and are illustrated for two user equipments UE1 and UE 2. As described above, for example, in the case of m=128, the IDs of the reference signals corresponding to the N beams included in the beam measurement result may be any ID between the IDs #0 to # 127. However, in fig. 3A to 3D, for convenience of explanation, IDs of reference signals corresponding to 8 beams included in the beam measurement results of the UE1 and the UE2 are ID #0, ID #1, ID #2, ID #3, ID #4, ID #5, ID #6, ID #7, respectively, and the magnitudes of Reference Signal Received Powers (RSRP) of these beams, which are one example of beam quality, are indicated by the height of a histogram, and #0 to #7 in the histogram indicate IDs of reference signals corresponding to the beams included in the beam measurement results. As can be seen from fig. 3A, for 8 beams included in the beam measurement result of UE1, IDs of reference signals corresponding to 8 beams numbered 0 to 7, which are arranged in descending RSRP order to obtain the order, are sequentially: for 8 beams included in the beam measurement result of UE2, IDs of reference signals corresponding to 8 beams numbered 0 to 7, which are arranged in descending RSRP order to obtain the ordered sequence, are sequentially: #2, #1, #3, #4, #0, #5, #6, #7.

In fig. 3A, let x=1. For UE1, reference signal #4 corresponding to beam number 0 (for simplicity, "reference signal corresponding to beam" is written as "actual reference signal" in 3A-3D) is mapped with source reference signal ID #0, reference signal #5 corresponding to beam number 1 is mapped with source reference signal ID #1, reference signal #6 corresponding to beam number 2 is mapped with source reference signal ID #2, …, reference signal #0 corresponding to beam number 7 is mapped with source reference signal ID # 7. For UE2, reference signal #2 corresponding to beam numbered 0 is mapped with source reference signal ID #0, reference signal #1 corresponding to beam numbered 1 is mapped with source reference signal ID #1, reference signal #3 corresponding to beam numbered 2 is mapped with source reference signal ID #2, …, reference signal #7 corresponding to beam numbered 7 is mapped with source reference signal ID # 7.

In fig. 3B-3D, although not shown, RSRP of 8 beams included in the beam measurement result is the same as in fig. 3A.

In fig. 3B, let x=2. For UE1, reference signals #4 and #5 corresponding to beams numbered 0 and 1 are mapped with a source reference signal with ID #0, reference signals #6 and #7 corresponding to beams numbered 2 and 3 are mapped with a source reference signal with ID #1, reference signals #3 and #2 corresponding to beams numbered 4 and 5 are mapped with a source reference signal with ID #2, and reference signals #1 and #0 corresponding to beams numbered 6 and 7 are mapped with a source reference signal with ID # 3. For UE2, reference signals #2 and #1 corresponding to beams numbered 0 and 1 are mapped with a source reference signal ID #0, reference signals #3 and #4 corresponding to beams numbered 2 and 3 are mapped with a source reference signal ID #1, reference signals #0 and #5 corresponding to beams numbered 4 and 5 are mapped with a source reference signal ID #2, and reference signals #6 and #7 corresponding to beams numbered 6 and 7 are mapped with a source reference signal ID # 3.

In fig. 3C, let x=3. For UE1, reference signals #4, #5, and #6 corresponding to beams numbered 0-2 are mapped with a source reference signal having ID #0, reference signals #7, #3, and #2 corresponding to beams numbered 3-5 are mapped with a source reference signal having ID #1, and reference signals #1 and #0 corresponding to beams numbered 6 and 7 are mapped with a source reference signal having ID # 2. For UE2, reference signals #2, #1, and #3 corresponding to beams numbered 0-2 are mapped with a source reference signal having ID #0, reference signals #4, #0, and #5 corresponding to beams numbered 3-5 are mapped with a source reference signal having ID #1, and reference signals #6 and #7 corresponding to beams numbered 6 and 7 are mapped with a source reference signal having ID # 2.

In fig. 3D, let x=4. For UE1, reference signals #4, #5, #6, and #7 corresponding to beams numbered 0-3 are mapped with a source reference signal having ID #0, and reference signals #3, #2, #1, and #0 corresponding to beams numbered 4-7 are mapped with a source reference signal having ID # 1. For UE2, reference signals #2, #1, #3, and #4 corresponding to beams numbered 0-3 are mapped with source reference signals ID #0, and reference signals #0, #5, #6, #7 corresponding to beams numbered 4-7 are mapped with source reference signals ID # 1.

Hereinafter, for clarity, reference signals corresponding to beams to be used for subsequent communication by the electronic device 100 and the user equipment are sometimes referred to as target reference signals. The user equipment receives a target reference signal from the electronic device 100 when the electronic device 100 is in subsequent communication with the user equipment. For the reception of the target reference signal, the user equipment needs to derive the required large scale parameters (e.g. doppler shift, delay, etc.) from one or more of the mapped source reference signals. Thus, before the ue receives the target reference signal, the electronic device 100 indicates the TCI status for the ue by signaling, that is, indicates the mapped source reference signal and the QCL type between the target reference signal and the mapped source reference signal for the ue.

As an example, the processing unit 101 may be configured to indicate the mapped TCI state directly to the user equipment by Radio Resource Control (RRC) signaling for the user equipment to determine a reference signal corresponding to a beam to be used for subsequent communications based on the indicated TCI state.

For example, in the case where the target reference signal is a periodic CSI-RS or Tracking Reference Signal (TRS), the electronic device 100 may indicate the mapped TCI state directly to the user equipment through RRC signaling.

As an example, the processing unit 101 may be configured to indicate the mapped TCI state to the user equipment by RRC signaling and a media intervention control element (MAC CE) for the user equipment to determine a reference signal corresponding to a beam to be used for subsequent communications based on the indicated TCI state.

For example, in the case where the target reference signal is a semi-persistent CSI-RS/TRS, or a demodulation reference signal (DM-RS) of a Physical Downlink Control Channel (PDCCH), the electronic device 100 may configure the candidate mapped TCI state for the user equipment through RRC signaling and then activate (may also be referred to as MAC-CE indication) the TCI state among the candidate mapped TCI states for the user equipment through MAC-CE.

As an example, the processing unit 101 may be configured to indicate the mapped TCI state to the user equipment through RRC signaling, MAC CE, and Downlink Control Information (DCI) for the user equipment to determine a reference signal corresponding to a beam to be used for subsequent communication based on the indicated TCI state.

For example, in the case where the target reference signal is an aperiodic CSI-RS or TRS, or a DM-RS of a Physical Downlink Shared Channel (PDSCH), the electronic device 100 may configure the candidate mapped TCI states for the user equipment through RRC signaling, then activate the TCI states among the candidate mapped TCI states for the user equipment through MAC-CE, and then use the ID indicating the TCI states by DCI for assisting the user equipment to receive the next target reference signal.

For example, the user device may receive the mapped TCI state indicated by the electronic device 100 and determine a reference signal corresponding to a beam to be used for subsequent communications based on the source reference signal and the beam measurement result corresponding to the mapped TCI state.

For example, the beam measurement results are the result of the last downlink beam measurement performed by the user equipment. The user equipment may obtain the ID of the source reference signal corresponding to the mapped TCI state and query the result of the last downlink beam measurement to determine the ID of the target reference signal to use the beam corresponding to the target reference signal as the receive beam and/or transmit beam.

For example, the user device may calculate, based on the ID of the source reference signal corresponding to the mapped TCI state indicated by the electronic device 100, the respective number of the ordered N beams as: (I-I) ×x, (I-I) ×x+1, …, min { (I-i+1) ×x-1, P-1}, where I is an ID of a source reference signal corresponding to the mapped TCI state indicated by the electronic device 100 and I is a positive integer of 0 or more and P-1 or less, min { } represents a minimum value, and a reference signal corresponding to a beam to be used for subsequent communication is determined based on the calculated number.

Fig. 4 is a diagram illustrating an example of determining a target reference signal based on a source reference signal and beam measurement results according to an embodiment of the present disclosure. In fig. 4, a specific example is given in conjunction with UE1 in fig. 3B where n=8, x=2.

In fig. 4, assuming that the IDs of the source reference signals in the mapped TCI state received by UE1 are #0 and #2, and i=0 is received, for example, through RRC signaling, UE1 calculates the corresponding source reference signals of ID #0 with the corresponding source reference signals of 0 and 1 in the ordered 8 beams and the corresponding numbers of ID #2 with the corresponding numbers of 4 and 5 in the ordered 8 beams according to (I-I) ×x, (I-I) ×1, …, min { (I-i+1) ×1, p-1}, UE1 knows by querying the result of the last downlink beam measurement: the IDs of the reference signals corresponding to the ordered numbered 0 and 1 beams are #4 and #5, respectively, and the IDs of the reference signals corresponding to the ordered numbered 4 and 5 beams are #3 and #2, respectively. Thus, UE1 determines that the IDs of the target reference signals corresponding to the source reference signal of ID #0 are #4 and #5, and the IDs of the target reference signals corresponding to the source reference signal of ID #2 are #3 and #2.

For example, UE1 may determine that the ID of the reference signal (i.e., the target reference signal) corresponding to the beam to be used for the subsequent communication is at least a part of #1, #3, #4, and # 5.

Fig. 5 is an example signaling flow illustrating TCI status indication between an electronic device 100 and a user device according to an embodiment of the present disclosure. As an example, an example signaling flow for the electronic device 100 to indicate the mapped TCI state to the user device through RRC signaling, MAC CE, and DCI is shown in fig. 5.

In S501, the electronic device 100 periodically or triggerably (aperiodically) transmits a reference signal set for downlink beam measurement, wherein the reference signal set includes M reference signals corresponding to M beams.

In S502, the user equipment receives and measures M reference signals (i.e., makes downlink beam measurements).

In S503, the electronic device 100 receives a beam measurement result including N beams reported by the user device.

In S504, the electronic device 100 dynamically maps the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam based on the beam measurement result.

In S505, the electronic device 100 configures the user equipment with the candidate mapped TCI state through RRC signaling.

In S506, the electronic device 100 activates at most 8 TCI states among the candidate mapped TCI states for the user device through the MAC-CE.

In S507, the electronic device 100 issues DCI on the PDCCH channel, through which an ID indicating one or two of the above 8 TCI states is used to assist the user equipment in receiving the next target reference signal.

In S508, the user equipment blindly detects the PDCCH, receives and decodes the DCI, obtains an ID of a source reference signal corresponding to the indicated TCI state, and inquires a result of the downlink beam measurement to obtain an ID of a target reference signal, and obtains large-scale information required to receive the target reference signal according to the indicated TCI state.

In S509, the electronic device 100 transmits a target reference signal to the user device.

In S510, the user equipment receives a target reference signal according to the large-scale information.

The present disclosure also provides an electronic device for wireless communication according to another embodiment. Fig. 6 illustrates a functional block diagram of an electronic device 600 for wireless communication according to another embodiment of the present disclosure. As shown in fig. 6, the electronic device 600 includes a transmission unit 601, which may report a beam measurement result of a related beam to the network side device, so that the network side device dynamically maps, based on the beam measurement result, a source reference signal corresponding to the TCI state and a reference signal corresponding to the beam, so as to be used for the electronic device 600 to perform subsequent communication with the network side device based on the dynamic mapping, where the network side device provides services for an apparatus related to the electronic device 600.

The transmission unit 601 may be implemented by one or more processing circuits, which may be implemented as a chip, for example.

The electronic device 600 may be provided as a device in a wireless communication system, and in particular the electronic device 600 may be provided on a User Equipment (UE) side or communicatively connected to a user equipment, for example. In the case where the electronic device 600 is provided on the user device side or is communicably connected to the user device, the apparatus related to the electronic device 600 may be the user device. Here, it should also be noted that the electronic device 600 may be implemented at a chip level or may also be implemented at a device level. For example, the electronic device 600 may operate as a user device itself, and may also include external devices such as a memory, transceiver (not shown), and the like. The memory may be used for storing programs and related data information that the user equipment needs to perform to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., base stations, other user equipment, etc.), the implementation of the transceiver is not particularly limited herein.

As an example, the network-side device may be the electronic device 100 mentioned above. As an example, the electronic device 600 may be the user device referred to in the electronic device 100 embodiments above.

In the embodiment according to the present disclosure, the electronic device 600 reports the beam measurement result of the related beam to the network side device, so that the network side device dynamically maps the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam, thereby improving the communication efficiency.

As an example, the source reference signal may include SSB or CSI-RS.

As an example, the transmission unit 601 may be configured to receive, from a network side device, a reference signal set for downlink beam measurement, where the reference signal set includes M reference signals corresponding to M beams, where M is a positive integer greater than or equal to N, and report the beam measurement result to the network side device based on the reference signal set.

For example, in the 52.6-71GHz band, to compensate for the larger path loss, a narrower beam would be used, so the number of beams would be much greater than in the 5/6GHz band. For example, the set of reference signals received by the electronic device 600 from the network side device for downlink beam measurements includes reference signals corresponding to m=128 beams.

As an example, the dynamic mapping may include: and dynamically mapping the source reference signal corresponding to the TCI state and reference signals corresponding to P beams in all N beams included in the beam measurement result, so as to configure the TCI state for the P beams, wherein N is a positive integer greater than or equal to 1 and P is a positive integer less than or equal to N.

The source reference signal and the reference signals corresponding to the P beams are only subjected to dynamic mapping, so that the actual reference signal with larger ID is indicated under the condition that the current total number is maintained unchanged by the TCI state, namely, more beams are indicated under the condition that the current total number is maintained unchanged by the TCI state, and therefore extra bits are not required to be added for indicating the ID of the TCI state, and therefore the system overhead can be reduced.

As an example, the dynamic mapping may include: the N beams are arranged in descending order of beam quality to obtain ordered N beams, wherein the ordered N beams sequentially have corresponding numbers from 0 to N-1, reference signals corresponding to x beams with numbers from 0 to x-1 are all mapped with source reference signals with ID being I, reference signals corresponding to x beams with numbers from x to 2x-1 are all mapped with source reference signals with ID being I+1, reference signals corresponding to x beams with numbers from 2x to 3x-1 are all mapped with source reference signals with ID being I+2, and so on until TCI states are configured for P beams, wherein x is a positive integer greater than or equal to 1 and less than or equal to P, I is a positive integer greater than or equal to 0 and less than or equal to J-P, and J is the maximum number of beams that can be represented by the maximum number of TCI states configured for the electronic device within each bandwidth portion BWP.

For a specific example of dynamic mapping, please refer to the description of fig. 3 in the embodiment of the electronic device 100, which is not further described here.

As an example, the transmission unit 601 may be configured to receive a mapped TCI state indicated by the network side device and determine a reference signal corresponding to a beam to be used for subsequent communication based on a source reference signal corresponding to the mapped TCI state and a beam measurement result.

That is, the electronic device 600 may obtain an ID of the mapped TCI state indicated by the network side device. Based on the ID of the mapped TCI state indicated by the network side device, the electronic device 600 may obtain the content of the mapped TCI state indicated by the network side device by querying TCI-stateto addmodlist. As described above, the TCI state indicates more beams while maintaining the current total number unchanged by dynamic mapping, which avoids the increase of TCI-statestoadmodlist content, thus greatly reducing the overhead and complexity of the user equipment side.

As an example, the transmission unit 601 may be configured to calculate, based on the ID of the source reference signal corresponding to the mapped TCI state indicated by the network side device, the respective number of the ordered N beams as: (I-I) ×x, (I-I) ×x+1, …, min { (I-i+1) ×x-1, P-1}, where I is an ID of a source reference signal corresponding to the mapped TCI state indicated by the network side device and I is a positive integer of 0 or more and P-1 or less, min { } represents a minimum value, and a reference signal corresponding to a beam to be used for subsequent communication is determined based on the calculated number.

For a specific example of determining reference signals corresponding to beams to be used for subsequent communications, reference is made to the description of fig. 4 in the embodiment of the electronic device 100, and will not be further described here.

As described above, the reference signal corresponding to the beam to be used for subsequent communication is sometimes referred to as a target reference signal. In addition, the mapped TCI state indicated by the network side device is referred to as the indicated TCI state.

As an example, the transmission unit 601 may be configured to directly receive the mapped TCI state indicated by the network side device through RRC signaling to determine a reference signal corresponding to a beam to be used for subsequent communication by the electronic device 600.

As an example, the transmission unit 601 may be configured to receive the mapped TCI state indicated by the network side device through RRC signaling and MAC CE to determine a reference signal corresponding to a beam to be used for subsequent communication by the electronic device 600.

For example, the indicated TCI state is configured by RRC signaling and is activated by the MAC CE (which may also be referred to as indicated by the MAC CE).

As an example, the transmission unit 601 may be configured to receive the mapped TCI state indicated by the network side device through RRC signaling, MAC CE, and DCI to determine a reference signal corresponding to a beam to be used by the electronic device 600 for the subsequent communication.

For example, the indicated TCI state is configured by RRC signaling, activated by MAC CE, and indicated by DCI.

Fig. 7 illustrates an example of an electronic device 600 configured and activated to indicate TCI status according to an embodiment of the present disclosure.

In S701, the indicated TCI state is configured through RRC signaling, activated through MAC CE, and indicated through DCI. In S702, the electronic device 600 obtains the ID of the indicated TCI state by decoding the DCI. In S703, the electronic apparatus 600 obtains the content of the indicated TCI state by querying TCI-stateto addmodlist. In S704, in the case where it is determined that the source reference signal is included in the content of the indicated TCI state, the ID of the target reference signal corresponding to the source reference signal in the indicated TCI state is determined based on the result of the last downstream beam measurement. In S705, the electronic device 600 performs subsequent communication with the network-side device using a beam (gray-filled beam) corresponding to the target reference signal.

As can be seen in conjunction with the example of fig. 7, the mapping relationship between the ID of the source reference signal and the ID of the target reference signal in the TCI state may be dynamically updated along with the beam measurement result, and the ID of the same source reference signal in the TCI state may be dynamically mapped to a different target reference signal, that is, may be dynamically mapped to a different beam corresponding to a different target reference signal, so that the configuration of the TCI state is more stable even if the TCI state is not reconfigured for the electronic device 600, compared to the one-to-one correspondence between the ID of the source reference signal in the TCI state and the ID of the reference signal corresponding to the beam in the prior art. In addition, the dynamic mapping can indicate more beams on the premise of maintaining the maximum number of TCI states supported by each BWP unchanged, thereby reducing the complexity of decoding the ID of the TCI state at the user equipment side, and avoiding the increase of TCI-statesToAddModList content, thus greatly reducing the system overhead.

Fig. 8 illustrates an example of a flow of electronic device 600 receiving a target reference signal according to an indicated TCI state, according to an embodiment of the present disclosure.

In S801, the electronic apparatus 600 obtains the ID of the indicated TCI state by decoding the DCI. In S802, the electronic apparatus 600 obtains the content of the indicated TCI state by querying TCI-stateto addmodlist. In S803, the electronic apparatus 600 determines whether any source reference signal is included in the content of the indicated TCI state. If the determination in S803 is yes, the process proceeds to S804, whereas if the determination in S803 is no, the process proceeds to S805. In S804, the electronic apparatus 600 inquires of the result of the last downstream beam measurement to determine the ID of the target reference signal corresponding to the source reference signal in the indicated TCI state, and after S804 is completed, the process proceeds to S805. In S805, the electronic device 600 receives a target reference signal from the network-side device (i.e., communicates with the network-side device using a beam corresponding to the target reference signal).

In describing the electronic device for wireless communication in the above embodiments, it is apparent that some processes or methods are also disclosed. Hereinafter, an outline of these methods is given without repeating some of the details that have been discussed above, but it should be noted that although these methods are disclosed in the course of describing an electronic device for wireless communication, these methods do not necessarily employ or are not necessarily performed by those components described. For example, embodiments of an electronic device for wireless communications may be implemented in part or in whole using hardware and/or firmware, while the methods for wireless communications discussed below may be implemented entirely by computer-executable programs, although such methods may also employ hardware and/or firmware of an electronic device for wireless communications.

Fig. 9 shows a flowchart of a method S900 for wireless communication according to one embodiment of the present disclosure. The method S900 starts at step S902. In step S904, the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam are dynamically mapped based on the beam measurement result of the related beam reported by the user equipment within the service range of the apparatus related to the electronic equipment, so as to perform subsequent communication between the electronic equipment and the user equipment. The method S900 ends at step S906.

The method may be performed, for example, by the electronic device 100 described above, and specific details thereof may be found in the description of the corresponding locations above and are not repeated here.

Fig. 10 shows a flowchart of a method S1000 for wireless communication according to another embodiment of the present disclosure. The method S1000 starts at step S1002. In step S1004, the electronic device reports a beam measurement result of the related beam to the network side device, so that the network side device dynamically maps a source reference signal corresponding to the TCI state and a reference signal corresponding to the beam based on the beam measurement result, thereby being used for subsequent communication between the electronic device and the network side device, where the network side device provides services for devices related to the electronic device. The method S1000 ends in step S1006.

The method may be performed, for example, by the electronic device 600 described above, the specific details of which may be found in the description of the corresponding locations above and are not repeated here.

The techniques of the present disclosure can be applied to various products.

Electronic device 100 may be implemented as various network-side devices such as a base station. A base station may be implemented as any type of evolved node B (eNB) or gNB (5G base station). enbs include, for example, macro enbs and small enbs. The small enbs may be enbs that cover cells smaller than the macro cell, such as pico enbs, micro enbs, and home (femto) enbs. A similar situation can also be used for the gNB. Instead, the base station may be implemented as any other type of base station, such as a NodeB and a Base Transceiver Station (BTS). The base station may include: a main body (also referred to as a base station apparatus) configured to control wireless communication; and one or more Remote Radio Heads (RRHs) disposed at a different location than the main body. In addition, various types of electronic devices may operate as a base station by temporarily or semi-permanently performing base station functions.

The electronic device 600 may be implemented as a variety of user devices. The user equipment may be implemented as a mobile terminal (such as a smart phone, a tablet Personal Computer (PC), a notebook PC, a portable game terminal, a portable/dongle type mobile router, and a digital camera device) or an in-vehicle terminal (such as a car navigation device). User equipment may also be implemented as terminals performing machine-to-machine (M2M) communication (also referred to as Machine Type Communication (MTC) terminals). Further, the user equipment may be a wireless communication module (such as an integrated circuit module including a single die) mounted on each of the above terminals.

[ application example about base station ]

(first application example)

Fig. 11 is a block diagram showing a first example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied. Note that the following description takes eNB as an example, but is equally applicable to the gNB. The eNB 800 includes one or more antennas 810 and a base station device 820. The base station apparatus 820 and each antenna 810 may be connected to each other via an RF cable.

Each of the antennas 810 includes a single or multiple antenna elements, such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna, and is used for transmitting and receiving wireless signals by the base station device 820. As shown in fig. 11, the eNB 800 may include multiple antennas 810. For example, the plurality of antennas 810 may be compatible with a plurality of frequency bands used by the eNB 800. Although fig. 11 shows an example in which the eNB 800 includes multiple antennas 810, the eNB 800 may also include a single antenna 810.

The base station apparatus 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.

The controller 821 may be, for example, a CPU or DSP, and operates various functions of higher layers of the base station apparatus 820. For example, the controller 821 generates data packets from data in signals processed by the wireless communication interface 825 and delivers the generated packets via the network interface 823. The controller 821 may bundle data from a plurality of baseband processors to generate a bundle packet and transfer the generated bundle packet. The controller 821 may have a logic function to perform control as follows: such as radio resource control, radio bearer control, mobility management, admission control and scheduling. The control may be performed in conjunction with a nearby eNB or core network node. The memory 822 includes a RAM and a ROM, and stores programs executed by the controller 821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

The network interface 823 is a communication interface for connecting the base station device 820 to the core network 824. The controller 821 may communicate with the core network node or another eNB via the network interface 823. In this case, the eNB 800 and the core network node or other enbs may be connected to each other through logical interfaces such as S1 interface and X2 interface. The network interface 823 may also be a wired communication interface or a wireless communication interface for a wireless backhaul. If the network interface 823 is a wireless communication interface, the network interface 823 may use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 825.

The wireless communication interface 825 supports any cellular communication schemes, such as Long Term Evolution (LTE) and LTE-advanced, and provides wireless connectivity to terminals located in a cell of the eNB 800 via the antenna 810. The wireless communication interface 825 may generally include, for example, a baseband (BB) processor 826 and RF circuitry 827. The BB processor 826 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing of layers such as L1, medium Access Control (MAC), radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP). Instead of the controller 821, the bb processor 826 may have some or all of the above-described logic functions. The BB processor 826 may be a memory storing a communication control program, or a module including a processor configured to execute a program and associated circuits. The update procedure may cause the functionality of the BB processor 826 to change. The module may be a card or blade that is inserted into a slot of the base station apparatus 820. Alternatively, the module may be a chip mounted on a card or blade. Meanwhile, the RF circuit 827 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 810.

As shown in fig. 11, the wireless communication interface 825 may include a plurality of BB processors 826. For example, the plurality of BB processors 826 may be compatible with a plurality of frequency bands used by the eNB 800. As shown in fig. 11, the wireless communication interface 825 may include a plurality of RF circuits 827. For example, the plurality of RF circuits 827 may be compatible with a plurality of antenna elements. Although fig. 11 shows an example in which the wireless communication interface 825 includes a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.

In the eNB 800 shown in fig. 11, the electronic device 100 described with reference to fig. 1, when implemented as a base station, may be implemented by the wireless communication interface 825. At least a portion of the functions may also be implemented by the controller 821. For example, the controller 821 may dynamically map a source reference signal corresponding to a TCI state and a reference signal corresponding to a beam based on a beam measurement result by performing the functions of the processing unit 101 described above with reference to fig. 1.

(second application example)

Fig. 12 is a block diagram showing a second example of a schematic configuration of an eNB or a gNB to which the techniques of this disclosure may be applied. Note that the following description is similarly given by way of example to the eNB, but is equally applicable to the gNB. The eNB 830 includes one or more antennas 840, a base station apparatus 850, and an RRH 860. The RRH 860 and each antenna 840 may be connected to each other via RF cables. Base station apparatus 850 and RRH 860 may be connected to each other via high-speed lines, such as fiber optic cables.

Each of the antennas 840 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 860 to transmit and receive wireless signals. As shown in fig. 12, the eNB 830 may include multiple antennas 840. For example, multiple antennas 840 may be compatible with multiple frequency bands used by eNB 830. Although fig. 12 shows an example in which the eNB 830 includes multiple antennas 840, the eNB 830 may also include a single antenna 840.

Base station apparatus 850 includes a controller 851, memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857. The controller 851, memory 852, and network interface 853 are the same as the controller 821, memory 822, and network interface 823 described with reference to fig. 11.

Wireless communication interface 855 supports any cellular communication schemes (such as LTE and LTE-advanced) and provides wireless communication via RRH 860 and antenna 840 to terminals located in the sector corresponding to RRH 860. The wireless communication interface 855 may generally include, for example, a BB processor 856. The BB processor 856 is identical to the BB processor 826 described with reference to fig. 11, except that the BB processor 856 is connected to the RF circuit 864 of the RRH 860 via connection interface 857. As shown in fig. 12, the wireless communication interface 855 may include a plurality of BB processors 856. For example, the plurality of BB processors 856 may be compatible with the plurality of frequency bands used by the eNB 830. Although fig. 12 shows an example in which the wireless communication interface 855 includes a plurality of BB processors 856, the wireless communication interface 855 may also include a single BB processor 856.

Connection interface 857 is an interface for connecting base station apparatus 850 (wireless communication interface 855) to RRH 860. Connection interface 857 may also be a communication module for connecting base station apparatus 850 (wireless communication interface 855) to communication in the above-described high-speed line of RRH 860.

RRH 860 includes connection interface 861 and wireless communication interface 863.

Connection interface 861 is an interface for connecting RRH 860 (wireless communication interface 863) to base station apparatus 850. The connection interface 861 may also be a communication module for communication in the high-speed line described above.

Wireless communication interface 863 transmits and receives wireless signals via antenna 840. Wireless communication interface 863 may generally include, for example, RF circuitry 864. The RF circuit 864 may include, for example, mixers, filters, and amplifiers, and transmits and receives wireless signals via the antenna 840. As shown in fig. 12, wireless communication interface 863 may include a plurality of RF circuits 864. For example, multiple RF circuits 864 may support multiple antenna elements. Although fig. 12 shows an example in which wireless communication interface 863 includes multiple RF circuits 864, wireless communication interface 863 may also include a single RF circuit 864.

In the eNB 830 shown in fig. 12, the electronic device 100 described with reference to fig. 1, when implemented as a base station, may be implemented by the wireless communication interface 855. At least a portion of the functionality may also be implemented by the controller 851. For example, the controller 851 may dynamically map the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam based on the beam measurement result by performing the functions of the processing unit 101 described above with reference to fig. 1.

[ application example with respect to user Equipment ]

(first application example)

Fig. 13 is a block diagram showing an example of a schematic configuration of a smart phone 900 to which the technology of the present disclosure can be applied. The smartphone 900 includes a processor 901, a memory 902, a storage device 903, an external connection interface 904, an imaging device 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more antenna switches 915, one or more antennas 916, a bus 917, a battery 918, and an auxiliary controller 919.

The processor 901 may be, for example, a CPU or a system on a chip (SoC) and controls functions of an application layer and additional layers of the smartphone 900. The memory 902 includes a RAM and a ROM, and stores data and programs executed by the processor 901. The storage 903 may include storage media such as semiconductor memory and hard disk. The external connection interface 904 is an interface for connecting external devices such as a memory card and a Universal Serial Bus (USB) device to the smart phone 900.

The image pickup device 906 includes an image sensor such as a Charge Coupled Device (CCD) and a Complementary Metal Oxide Semiconductor (CMOS), and generates a captured image. The sensor 907 may include a set of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. Microphone 908 converts sound input to smartphone 900 into an audio signal. The input device 909 includes, for example, a touch sensor, a keypad, a keyboard, buttons, or switches configured to detect a touch on the screen of the display device 910, and receives an operation or information input from a user. The display device 910 includes a screen such as a Liquid Crystal Display (LCD) and an Organic Light Emitting Diode (OLED) display, and displays an output image of the smart phone 900. The speaker 911 converts audio signals output from the smart phone 900 into sound.

The wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE-advanced) and performs wireless communication. The wireless communication interface 912 may generally include, for example, a BB processor 913 and RF circuitry 914. The BB processor 913 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 914 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 916. Note that although the figure shows a case where one RF link is connected to one antenna, this is only illustrative, and includes a case where one RF link is connected to a plurality of antennas through a plurality of phase shifters. The wireless communication interface 912 may be one chip module on which the BB processor 913 and the RF circuit 914 are integrated. As shown in fig. 13, the wireless communication interface 912 may include a plurality of BB processors 913 and a plurality of RF circuits 914. Although fig. 13 shows an example in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.

Further, the wireless communication interface 912 may support other types of wireless communication schemes, such as a short-range wireless communication scheme, a near-field communication scheme, and a wireless Local Area Network (LAN) scheme, in addition to the cellular communication scheme. In this case, the wireless communication interface 912 may include a BB processor 913 and an RF circuit 914 for each wireless communication scheme.

Each of the antenna switches 915 switches a connection destination of the antenna 916 between a plurality of circuits included in the wireless communication interface 912 (e.g., circuits for different wireless communication schemes).

Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 912 to transmit and receive wireless signals. As shown in fig. 13, the smart phone 900 may include a plurality of antennas 916. Although fig. 13 shows an example in which the smart phone 900 includes multiple antennas 916, the smart phone 900 may also include a single antenna 916.

Further, the smart phone 900 may include an antenna 916 for each wireless communication scheme. In this case, the antenna switch 915 may be omitted from the configuration of the smart phone 900.

The bus 917 connects the processor 901, the memory 902, the storage device 903, the external connection interface 904, the image pickup device 906, the sensor 907, the microphone 908, the input device 909, the display device 910, the speaker 911, the wireless communication interface 912, and the auxiliary controller 919 to each other. The battery 918 provides power to the various blocks of the smartphone 900 shown in fig. 13 via a feeder line, which is partially shown as a dashed line in the figure. The secondary controller 919 operates minimal essential functions of the smart phone 900, for example, in a sleep mode.

In the smart phone 900 shown in fig. 13, in the case where the electronic device 600 described with reference to fig. 6 is implemented as a smart phone as a user device side, for example, the transceiver of the electronic device 600 may be implemented by the wireless communication interface 912. At least a portion of the functionality may also be implemented by the processor 901 or the secondary controller 919. For example, the processor 901 or the auxiliary controller 919 may report a beam measurement result of a related beam to the network side device by performing the function of the transmission unit 601 described above with reference to fig. 6, so that the network side device dynamically maps a source reference signal corresponding to the TCI state and a reference signal corresponding to the beam.

(second application example)

Fig. 14 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technology of the present disclosure can be applied. The car navigation device 920 includes a processor 921, a memory 922, a Global Positioning System (GPS) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, a wireless communication interface 933, one or more antenna switches 936, one or more antennas 937, and a battery 938.

The processor 921 may be, for example, a CPU or SoC, and controls the navigation function and additional functions of the car navigation device 920. The memory 922 includes a RAM and a ROM, and stores data and programs executed by the processor 921.

The GPS module 924 uses GPS signals received from GPS satellites to measure the location (such as latitude, longitude, and altitude) of the car navigation device 920. The sensor 925 may include a set of sensors such as a gyroscopic sensor, a geomagnetic sensor, and an air pressure sensor. The data interface 926 is connected to, for example, an in-vehicle network 941 via a terminal not shown, and acquires data generated by the vehicle (such as vehicle speed data).

The content player 927 reproduces content stored in a storage medium (such as CD and DVD) inserted into the storage medium interface 928. The input device 929 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from a user. The display device 930 includes a screen such as an LCD or OLED display, and displays images of navigation functions or reproduced content. The speaker 931 outputs sounds of the navigation function or reproduced contents.

The wireless communication interface 933 supports any cellular communication scheme (such as LTE and LTE-advanced), and performs wireless communication. Wireless communication interface 933 may generally include, for example, BB processor 934 and RF circuitry 935. The BB processor 934 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication. Meanwhile, the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive a wireless signal via the antenna 937. Wireless communication interface 933 may also be a chip module with BB processor 934 and RF circuitry 935 integrated thereon. As shown in fig. 14, wireless communication interface 933 may include a plurality of BB processors 934 and a plurality of RF circuits 935. Although fig. 14 shows an example in which the wireless communication interface 933 includes a plurality of BB processors 934 and a plurality of RF circuits 935, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.

Further, the wireless communication interface 933 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless LAN scheme, in addition to the cellular communication scheme. In this case, the wireless communication interface 933 may include a BB processor 934 and RF circuitry 935 for each wireless communication scheme.

Each of the antenna switches 936 switches the connection destination of the antenna 937 between a plurality of circuits included in the wireless communication interface 933 (such as circuits for different wireless communication schemes).

Each of the antennas 937 includes a single or a plurality of antenna elements (such as a plurality of antenna elements included in a MIMO antenna), and is used for the wireless communication interface 933 to transmit and receive wireless signals. As shown in fig. 14, the car navigation device 920 can include a plurality of antennas 937. Although fig. 14 shows an example in which the car navigation device 920 includes a plurality of antennas 937, the car navigation device 920 can also include a single antenna 937.

Further, the car navigation device 920 can include an antenna 937 for each wireless communication scheme. In this case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.

The battery 938 provides power to the various blocks of the car navigation device 920 shown in fig. 14 via a feeder line, which is partially shown as a dashed line in the figure. The battery 938 accumulates electric power supplied from the vehicle.

In the car navigation device 920 shown in fig. 14, in the case where the electronic device 600 described with reference to fig. 6 is implemented as a car navigation device as a user device side, for example, the transceiver of the electronic device 600 may be implemented by the wireless communication interface 933. At least a portion of the functionality may also be implemented by the processor 921. For example, the processor 921 may report the beam measurement result of the beam to the network-side device by performing the function of the transmission unit 601 described above with reference to fig. 6, so that the network-side device dynamically maps the source reference signal corresponding to the TCI state and the reference signal corresponding to the beam.

The techniques of this disclosure may also be implemented as an in-vehicle system (or vehicle) 940 that includes one or more of a car navigation device 920, an in-vehicle network 941, and a vehicle module 942. The vehicle module 942 generates vehicle data (such as vehicle speed, engine speed, and fault information) and outputs the generated data to the on-board network 941.

While the basic principles of the invention have been described above in connection with specific embodiments, it should be noted that all or any steps or components of the methods and apparatus of the invention will be understood by those skilled in the art to be embodied in any computing device (including processors, storage media, etc.) or network of computing devices, either in hardware, firmware, software, or a combination thereof, which will be accomplished by one skilled in the art with the basic circuit design knowledge or basic programming skills of those in the art upon reading the description of the invention.

The invention also proposes a program product storing machine-readable instruction codes. The above-described methods according to embodiments of the present invention may be performed when the instruction codes are read and executed by a machine.

Accordingly, a storage medium for carrying the above-described program product storing machine-readable instruction codes is also included in the disclosure of the present invention. Storage media include, but are not limited to, floppy diskettes, compact discs, magneto-optical discs, memory cards, memory sticks, and the like.

In the case where the present invention is implemented by software or firmware, a program constituting the software is installed from a storage medium or a network to a computer (for example, a general-purpose computer 1500 shown in fig. 15) having a dedicated hardware structure, and when various programs are installed, the computer can execute various functions and the like.

In fig. 15, a Central Processing Unit (CPU) 1501 executes various processes according to a program stored in a Read Only Memory (ROM) 1502 or a program loaded from a storage section 1508 to a Random Access Memory (RAM) 1503. In the RAM 1503, data necessary when the CPU 1501 executes various processes and the like is also stored as needed. The CPU 1501, ROM 1502, and RAM 1503 are connected to each other via a bus 1504. An input/output interface 1505 is also connected to the bus 1504.

The following are connected to the input/output interface 1505: an input section 1506 (including a keyboard, a mouse, and the like), an output section 1507 (including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker, and the like), a storage section 1508 (including a hard disk, and the like), and a communication section 1509 (including a network interface card such as a LAN card, a modem, and the like). The communication section 1509 performs communication processing via a network such as the internet. The drive 1510 may also be connected to the input/output interface 1505 as needed. A removable medium 1511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 1510 as necessary, so that a computer program read out therefrom is mounted in the storage section 1508 as necessary.

In the case of implementing the above-described series of processes by software, a program constituting the software is installed from a network such as the internet or a storage medium such as the removable medium 1511.

It will be understood by those skilled in the art that such a storage medium is not limited to the removable medium 1511 shown in fig. 15 in which the program is stored, which is distributed separately from the apparatus to provide the program to the user. Examples of the removable medium 1511 include a magnetic disk (including a floppy disk (registered trademark)), an optical disk (including a compact disk read only memory (CD-ROM) and a Digital Versatile Disk (DVD)), a magneto-optical disk (including a Mini Disk (MD) (registered trademark)), and a semiconductor memory. Alternatively, the storage medium may be a ROM 1502, a hard disk contained in the storage section 1508, or the like, in which a program is stored, and distributed to users together with a device containing them.

It is also noted that in the apparatus, methods and systems of the present invention, components or steps may be disassembled and/or assembled. These decompositions and/or recombinations should be considered equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed in chronological order in the order of description, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.

Finally, it is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

Although the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, it should be understood that the above-described embodiments are merely illustrative of the present invention and not limiting the present invention. Various modifications and alterations to the above described embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. The scope of the invention is, therefore, indicated only by the appended claims and their equivalents.

The present technique may also be implemented as follows.

Scheme 1. An electronic device for wireless communication, comprising:

Processing circuitry configured to dynamically map a source reference signal corresponding to a transmission configuration indication, TCI, state and a reference signal corresponding to a beam for subsequent communication by the electronic device with the user device based on beam measurements of the relevant beam reported by the user device within service range of an apparatus related to the electronic device.

The electronic device of claim 1, wherein the processing circuitry is configured to dynamically map the source reference signal and reference signals corresponding to P of all N beams included in the beam measurement result, thereby configuring the TCI state for the P beams, wherein N is a positive integer greater than or equal to 1 and P is a positive integer less than or equal to N.

Scheme 3. The electronic device of scheme 2 wherein the dynamic mapping comprises:

arranging the N beams in descending order of beam quality to obtain ordered N beams, wherein the ordered N beams sequentially have corresponding numbers from 0 to N-1, an

Mapping all reference signals corresponding to x beams numbered from 0 to x-1 with source reference signals with ID of I, mapping all reference signals corresponding to x beams numbered from x to 2x-1 with source reference signals with ID of I+1, mapping all reference signals corresponding to x beams numbered from 2x to 3x-1 with source reference signals with ID of I+2 until the TCI state is configured for all P beams,

Where x is a positive integer greater than or equal to 1 and less than or equal to P, I is a positive integer greater than or equal to 0 and less than or equal to J-P, and J is the maximum number of beams that can be represented by the maximum number of TCI states configured for the user equipment within each bandwidth portion BWP.

Scheme 4. The electronic device of scheme 3 wherein the dynamic mapping comprises:

and if the number of the beams which are not configured with the TCI state and are among the top P beams in the ordered N beams is less than x, mapping the reference signals corresponding to the beams which are not configured with the TCI state with the same source reference signals.

The electronic device of any of claims 2-4, wherein the processing circuitry is configured to:

transmitting a reference signal set for downlink beam measurement to the user equipment, wherein the reference signal set comprises M reference signals corresponding to M beams, M is a positive integer greater than or equal to N, and

and receiving the beam measurement result reported by the user equipment based on the reference signal set.

An electronic device according to any one of aspects 1 to 5, wherein,

The source reference signal includes a synchronization signal block SSB or a channel state information reference signal CSI-RS.

The electronic device of any of claims 1-6, wherein the processing circuitry is configured to indicate the mapped TCI state directly to the user device by radio resource control, RRC, signaling for the user device to determine a reference signal corresponding to a beam to be used for the subsequent communication based on the indicated TCI state.

The electronic device of any of claims 1-6, wherein the processing circuitry is configured to indicate the mapped TCI state to the user device by radio resource control, RRC, signaling and media intervention control element, MAC CE, for the user device to determine a reference signal corresponding to a beam to be used by the subsequent communication based on the indicated TCI state.

The electronic device of any one of claims 1-6, wherein the processing circuitry is configured to indicate a mapped TCI state to the user device by radio resource control, RRC, signaling, media intervention control element, MAC CE, and downlink control information, DCI, for the user device to determine a reference signal corresponding to a beam to be used by the subsequent communication based on the indicated TCI state.

Scheme 10. An electronic device for wireless communication, comprising:

processing circuitry configured to report beam measurement results of related beams to a network side device for the network side device to dynamically map source reference signals corresponding to transmission configuration indication, TCI, states and reference signals corresponding to beams based on the beam measurement results for subsequent communication by the electronic device with the network side device based on the dynamic mapping,

the network side equipment provides services for devices related to the electronic equipment.

The electronic device of claim 10, wherein the processing circuit is configured to:

receiving a mapped TCI state indicated by the network side device, and

a reference signal corresponding to a beam to be used for the subsequent communication is determined based on a source reference signal corresponding to the mapped TCI state and the beam measurement result.

The electronic device of claim 10 or 11, wherein the dynamic mapping comprises: and dynamically mapping a source reference signal corresponding to a TCI state and reference signals corresponding to P beams in all N beams included in the beam measurement result, so as to configure the TCI state for the P beams, wherein N is a positive integer greater than or equal to 1 and P is a positive integer less than or equal to N.

The electronic device of claim 12, wherein the dynamic mapping comprises:

where x is a positive integer greater than or equal to 1 and less than or equal to P, I is a positive integer greater than or equal to 0 and less than or equal to J-P, and J is the maximum number of beams that can be represented by the maximum number of TCI states configured for the electronic device within each bandwidth portion BWP.

The electronic device of claim 13, wherein the dynamic mapping comprises:

The electronic device of claim 13 or 14, wherein the processing circuitry is configured to:

based on the ID of the source reference signal corresponding to the mapped TCI state indicated by the network side device, the respective number of the ordered N beams is calculated as: (I-I) x, (I-I) x+1, …, min { (I-i+1) x-1, P-1}, wherein I is an ID of a source reference signal corresponding to the mapped TCI state indicated by the network side device and I is a positive integer of 0 or more and P-1 or less, min { } represents taking the minimum value, and

based on the calculated number, a reference signal corresponding to a beam to be used for the subsequent communication is determined.

The electronic device of any of claims 12-15, wherein the processing circuitry is configured to:

receiving a reference signal set for downlink beam measurement from the network side equipment, wherein the reference signal set comprises M reference signals corresponding to M beams, M is a positive integer greater than or equal to N, and

and reporting the beam measurement result to the network side equipment based on the reference signal set.

The electronic device of any of claims 10-16, wherein the source reference signal comprises a synchronization signal block SSB or a channel state information reference signal CSI-RS.

The electronic device of any of claims 10-17, wherein the processing circuitry is configured to directly receive, via radio resource control, RRC, signaling, the mapped TCI state indicated by the network side device for the electronic device to determine reference signals corresponding to beams to be used by the subsequent communication.

The electronic device of any of claims 10-17, wherein the processing circuitry is configured to receive, via radio resource control, RRC, signaling and media intervention control element, MAC CE, a mapped TCI state indicated by the network side device for the electronic device to determine reference signals corresponding to beams to be used by the subsequent communication.

The electronic device according to any of claims 10-17, wherein the processing circuitry is configured to receive, via radio resource control, RRC, signaling, media intervention control element, MAC CE, and downlink control information, DCI, the mapped TCI, status indicated by the network side device for the electronic device to determine reference signals corresponding to beams to be used by the subsequent communication.

Scheme 21. A method for wireless communication, comprising:

and dynamically mapping a source reference signal corresponding to a transmission configuration indication TCI state and a reference signal corresponding to a beam based on a beam measurement result of a related beam reported by user equipment in a service range of a device related to the electronic equipment, so that the electronic equipment and the user equipment can carry out subsequent communication.

Scheme 22. A method for wireless communication, comprising:

the electronic device reports the beam measurement result of the related beam to the network side device, so that the network side device dynamically maps the source reference signal corresponding to the TCI state of the transmission configuration indication and the reference signal corresponding to the beam based on the beam measurement result, thereby being used for the subsequent communication between the electronic device and the network side device,

Scheme 23. A computer readable storage medium having stored thereon computer executable instructions which when executed perform the method for wireless communication according to scheme 21 or 22.

Claims

1. An electronic device for wireless communication, comprising:

2. The electronic device of claim 1, wherein the processing circuitry is configured to dynamically map the source reference signal and reference signals corresponding to P of all N beams included in the beam measurement result to configure the TCI state for the P beams, wherein N is a positive integer greater than or equal to 1 and P is a positive integer less than or equal to N.

3. The electronic device of claim 2, wherein the dynamic mapping comprises:

4. The electronic device of claim 3, wherein the dynamic mapping comprises:

5. The electronic device of any of claims 2-4, wherein the processing circuitry is configured to:

6. The electronic device of any one of claims 1 to 5, wherein,

7. An electronic device for wireless communication, comprising:

8. A method for wireless communication, comprising:

9. A method for wireless communication, comprising:

10. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed, perform the method for wireless communication according to claim 8 or 9.