CN108365997B

CN108365997B - Information transmission method and device

Info

Publication number: CN108365997B
Application number: CN201710061851.0A
Authority: CN
Inventors: 王婷; 钱锋; 窦圣跃; 李元杰; 楼群芳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-26
Filing date: 2017-01-26
Publication date: 2021-12-14
Anticipated expiration: 2037-01-26
Also published as: WO2018137703A1; CN108365997A

Abstract

The embodiment of the invention provides an information transmission method and device. The method comprises the following steps: the user equipment receives a first reference signal and/or a second reference signal; the user equipment determines the transmission delay difference between the first reference signal and the second reference signal according to the first reference signal and the second reference signal; alternatively, the first transmission delay is determined from the first reference signal and/or the second transmission delay is determined from the second reference signal. By the method, the transmission time delay of different wireless network devices can be measured, and the transmission performance is improved.

Description

Information transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background

Next-generation mobile communication systems require high-capacity and high-quality data transmission. Multiple Input Multiple Output (MIMO) technology is considered as one of the key technologies for realizing future high-speed data transmission, and has a wide application prospect in third-generation (3G) and fourth-generation (4G) mobile communication systems. A plurality of transmitting antennas of a conventional centralized MIMO system are all concentrated at a Base Station (BS) end. Different from centralized MIMO, a plurality of transmitting antennas of a distributed MIMO system are distributed in different geographical locations, and each pair of transmitting and receiving links are more independent, so that the distributed MIMO system has the advantages of large capacity, low power consumption, better coverage, low electromagnetic damage to human bodies, and the like, and is considered as one of alternatives of future wireless communication systems. In the case of distributed MIMO, to improve the signal reliability of the edge user equipment and to improve the throughput of the edge cell, a transmission method using multipoint diversity or multipoint multiflow may be considered.

Coordinated multipoint transmission (CoMP) is considered as an effective method for solving the inter-cell interference problem and improving the throughput of edge user equipment. Multiple neighboring cells in CoMP techniques can jointly process or coordinate edge user equipment to avoid interference and improve edge user throughput. The downlink CoMP scenario mainly includes Joint Transmission (JT), coordinated scheduling and beamforming (CS/CB), and dynamic point selection/closing (DPS/DPB), where JT is divided into coherent JT and incoherent JT, and the uplink CoMP scenario includes Joint Reception (JR), CS, and DPS/DPB.

In some scenarios of CoMP, such as JT or DPS, since different base stations, such as the first base station and the second base station in fig. 1a, reach a User Equipment (UE), such as UE1, with different transmission delays, such as T1 in fig. 1a being the transmission delay of the first base station to UE1 and T2 being the transmission delay of the second base station to UE1, the difference between T1 and T2 may cause the transmission performance to be degraded.

Disclosure of Invention

The embodiment of the invention provides an information transmission method and device, wireless network equipment and user equipment, so that transmission time delay of different wireless network equipment can be measured.

In a first aspect, an embodiment of the present invention provides an information transmission method, including:

the user equipment receives a first reference signal and/or a second reference signal;

the user equipment determines the transmission delay difference between the first reference signal and the second reference signal according to the first reference signal and the second reference signal; alternatively, the first transmission delay is determined from the first reference signal and/or the second transmission delay is determined from the second reference signal.

Optionally, the method further includes:

the user equipment receives first indication information and/or second indication information, wherein the first indication information is used for indicating that a first reference signal is used for measuring transmission delay, and the second indication information is used for indicating that a second reference signal is used for measuring the transmission delay;

the determining, by the user equipment, the transmission delay difference between the first reference signal and the second reference signal according to the first reference signal and the second reference signal includes:

the user equipment determines a transmission delay difference between a first reference signal and a second reference signal according to the first reference signal and the second reference signal based on the first indication information and the second indication information; alternatively, the first and second electrodes may be,

the determining the first transmission delay according to the first reference signal and/or the determining the second transmission delay according to the second reference signal comprises:

the user equipment determines a first transmission delay according to the first reference signal based on the first indication information, and/or,

and the user equipment determines a second transmission time delay according to the second reference signal based on the second indication information.

Optionally, the step of using the first indication information to indicate that the first reference signal is used for measuring the transmission delay includes:

the first indication information is included in at least one of a channel state information measurement set domain, a channel state information reporting set domain, or a reference signal resource domain, and the first indication information is used to indicate the channel state information measurement set domain, the channel state information reporting set domain, or a reference signal corresponding to one of reference signal resource identifiers included in at least one of the reference signal resource domains is a first reference signal, and the first reference signal is used to measure transmission delay.

For example, the first indication information may indicate with the resource identifier as a dimension, such as by a field in a domain including the resource identifier information, the field may be a boolean value, or may indicate with the measurement of the latency as a dimension, such as by a field in a domain for the measurement of the latency, the field may be one or more resource identifier information, the resource identifier information may be a channel state information measurement set identifier, a resource set identifier, or a resource identifier.

Optionally, the step of using the second indication information to indicate that the second reference signal is used for measuring the transmission delay includes:

the second indication information is included in at least one of a channel state information measurement set domain, a channel state information reporting set domain, or a reference signal resource domain, the first indication information is used to indicate the channel state information measurement set domain, the channel state information reporting set domain, or a reference signal corresponding to one of reference signal resource identifiers included in at least one of the reference signal resource domains is a second reference signal, and the second reference signal is used to measure transmission delay.

Similarly, the second indication information may indicate with the resource identifier as a dimension, such as by a field in a domain including the resource identifier information, which may be a boolean value, or may indicate with the measurement of the latency as a dimension, such as by a field in a domain for the measurement of the latency, which may be one or more resource identifier information, which may be a channel state information measurement set identifier, a resource set identifier, or a resource identifier.

Optionally, the first reference signal is a reference baseline for transmission delay measurement, and the first indication information is further used to indicate that the first reference signal is the reference baseline for transmission delay measurement. In this case, optionally, the indicating the first reference signal as a reference baseline for transmission delay measurement further includes:

the first indication information is included in a first information field indicating information of a reference baseline for transmission delay measurement.

Optionally, the first information field further includes third indication information in addition to the first indication information, where the third indication information is used to indicate information of another reference baseline for transmission delay measurement.

Optionally, the method further includes: and the user equipment receives fourth indication information, wherein the fourth indication information is used for indicating that a baseline referred by a second reference signal when used for measuring transmission delay is the first reference signal.

Optionally, the first reference signal is a reference baseline for transmission delay measurement, and the method further includes:

the user equipment receives fifth indication information, where the fifth indication information is used to indicate that the first reference signal is a reference baseline for transmission delay measurement. In this case, the method may further include: and the user equipment receives fourth indication information, wherein the fourth indication information is used for indicating that a baseline referred by a second reference signal when used for measuring transmission delay is the first reference signal.

Optionally, the method further includes:

the ue sends the information of the propagation delay difference, where the information of the propagation delay difference includes an index of the propagation delay difference, or a quantized value of the propagation delay difference, or,

and the user equipment sends the information of the first transmission delay and/or the second transmission delay.

Optionally, the method further includes:

the user equipment receives sixth indication information, the sixth indication information is used for indicating the transmission delay difference and/or feedback information of the transmission delay,

the user equipment sends the information of the transmission delay difference and/or the transmission delay according to the sixth indication information,

the sixth indication information is used for indicating the transmission delay difference and/or the feedback information of the transmission delay, and includes:

the sixth indication information includes information related to periodic feedback, and/or includes information related to aperiodic feedback, the information related to periodic feedback includes information for indicating a periodic feedback period and an offset, the information related to aperiodic feedback includes information for indicating a start of feedback of the transmission delay difference and/or the transmission delay, information of a feedback number, information for indicating an end of feedback of the transmission delay difference and/or the transmission delay, or one or more of information for indicating a start time and an end time of one-time transmission delay difference and/or transmission delay feedback, and the information of the feedback number is used for indicating the feedback number of the transmission delay difference and/or the transmission delay.

Optionally, the information of the transmission delay difference and/or the transmission delay includes an index of the transmission delay difference and/or the transmission delay, or a quantized value of the transmission delay difference and/or the transmission delay.

Optionally, the information of the transmission delay difference and/or the transmission delay is included in an uplink control channel, or included in channel state information.

Optionally, the information of the transmission delay difference and/or the transmission delay is included in channel state information, and the method further includes:

and the user equipment receives seventh indication information, wherein the seventh indication information is used for indicating the transmission delay difference and/or the information of the transmission delay and is included in the channel state information.

Optionally, the seventh indication information is a feedback type of channel state information.

In a second aspect, an embodiment of the present invention further provides an information transmission method, which is described from the perspective of a wireless network device, and reference may be made to the information transmission method provided in the first aspect. The method comprises the following steps:

the wireless network equipment sends configuration information, wherein the configuration information comprises information related to transmission delay measurement;

the wireless network equipment receives the information of the transmission delay and/or the transmission delay difference from the user equipment.

Optionally, the configuration information includes first indication information and/or second indication information, where the first indication information is used to indicate that the first reference signal is used for measurement of transmission delay, and the second indication information is used to indicate that the second reference signal is used for measurement of transmission delay.

The detailed description may refer to the description in the first aspect.

Optionally, the first reference signal is a reference baseline for transmission delay measurement, and the first indication information is further used to indicate that the first reference signal is the reference baseline for transmission delay measurement.

In this case, optionally, the indicating the first reference signal as a reference baseline for transmission delay measurement further includes:

Optionally, the configuration information further includes fourth indication information, where the fourth indication information is used to indicate that a baseline referred to when the second reference signal is used for measurement of transmission delay is the first reference signal.

Optionally, the first reference signal is a reference baseline for transmission delay measurement, and the configuration information further includes fifth indication information, where the fifth indication information is used to indicate that the first reference signal is the reference baseline for transmission delay measurement.

Optionally, the configuration information further includes sixth indication information, where the sixth indication information is used to indicate a transmission delay difference and/or feedback information of a transmission delay,

Optionally, the information of the transmission delay difference and/or the transmission delay is included in the channel state information, and the configuration information further includes seventh indication information, where the seventh indication information is used to indicate that the information of the transmission delay difference and/or the transmission delay is included in the channel state information.

In a third aspect, there is also provided an apparatus comprising a processor and a memory,

the memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory, and when the processor executes the instructions stored by the memory, the user equipment is configured to perform any one of the methods involved by the user equipment as described in the first aspect.

Optionally, the apparatus may further comprise a transceiver.

Alternatively, the apparatus may be a user equipment, or may be a chip disposed in the user equipment.

In a fourth aspect, there is also provided an apparatus comprising a processor and a memory,

the memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory, and when the processor executes the instructions stored by the memory, the wireless network device is configured to perform any of the methods involved in the wireless network device as described in the second aspect.

Optionally, the apparatus may further comprise a transceiver.

Alternatively, the apparatus may be a wireless network device, or may be a chip disposed in a wireless network device.

In a fifth aspect, an apparatus for information transmission is further provided, which includes modules for implementing any one of the methods related to the foregoing user equipment. The specific modules may correspond to the steps of each method, and are not described herein in detail.

In a sixth aspect, an apparatus for information transmission is further provided, which includes modules for implementing any one of the methods involved in the foregoing wireless network device. The specific modules may correspond to the steps of each method, and are not described herein in detail.

In a seventh aspect, a computer storage medium is provided for storing instructions that, when executed, perform any one of the methods described above in relation to the user equipment or the wireless network device.

In an eighth aspect, a communication system is further provided, which includes the user equipment provided in the foregoing third aspect and the wireless network equipment provided in the fourth aspect.

For ease of understanding, the examples are given to illustrate some of the concepts related to the invention. As follows:

third generation partnership project (3)^rdgeneration partnership project, 3GPP for short) is a project that is dedicated to the development of wireless communication networks. The 3 GPP-related organization is generally referred to as the 3GPP organization.

A wireless communication network is a network that provides wireless communication functions. Wireless communication networks may employ different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single Carrier frequency division Multiple Access (SC-FDMA), Carrier Sense Multiple Access/Collision Avoidance (Carrier Sense Multiple Access with diversity Access). Networks can be classified into 2G (generation), 3G, 4G, or future evolution networks, such as 5G, according to the capacity, rate, delay, etc. of different networks. Typical 2G networks include a global system for mobile communications (GSM) network or a General Packet Radio Service (GPRS) network, typical 3G networks include a Universal Mobile Telecommunications System (UMTS) network, and typical 4G networks include a Long Term Evolution (LTE) network. Among them, the UMTS network may also be referred to as Universal Terrestrial Radio Access Network (UTRAN) and the LTE network may also be referred to as evolved universal terrestrial radio access network (E-UTRAN). According to different resource allocation modes, the method can be divided into a cellular communication network and a Wireless Local Area Network (WLAN), wherein the cellular communication network is mainly scheduled and the WLAN is mainly competitive. The aforementioned 2G, 3G and 4G networks are all cellular communication networks.

The cellular communication network is one of wireless communication networks, and adopts a cellular wireless networking mode, and the terminal equipment and the network equipment are connected through a wireless channel, so that users can communicate with each other in the activity. The main characteristic is the mobility of the terminal, and the terminal has the functions of handover and automatic roaming across local networks.

A User Equipment (UE) is a terminal device, which may be a mobile terminal device or an immobile terminal device. The device is mainly used for receiving or sending service data. The user equipments may be distributed in networks where the user equipments have different names, such as: a terminal, a mobile station, a subscriber unit, a station, a cellular telephone, a personal digital assistant, a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a wireless local loop station, a vehicle mounted device, etc. The user equipment may communicate with one or more core networks via a Radio Access Network (RAN), an access portion of a wireless communication network, for example to exchange voice and/or data with the radio access network.

A Base Station (BS) device, which may also be referred to as a base station, is a device deployed in a radio access network to provide wireless communication functions. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS) and a Base Station Controller (BSC), a device providing a base station function in a 3G network includes a node B (english NodeB) and a Radio Network Controller (RNC), a device providing a base station function in a 4G network includes an evolved node B (evolved NodeB, eNB), and a device providing a base station function in a WLAN is an Access Point (AP). In a future 5G network, such as New Radio (NR) or LTE +, devices providing base station functionality include node b (gnb) for continued evolution, TRP (transmission and reception point), or TP (transmission point). The TRP or TP may not include a baseband part, only include a radio frequency part, or include a baseband part and a radio frequency part.

A wireless device refers to a device located in a wireless communication network and capable of communicating wirelessly. The device may be a base station, a user equipment, or other network elements.

The network side device, which is a device located at a network side in a wireless communication network, may be an access network element, such as a base station or a controller (if any), or may also be a core network element, or may also be another network element.

NR (new radio) refers to a new generation radio access network technology, and can be applied in future evolution networks, such as 5G networks.

A Wireless Local Area Network (WLAN) refers to a local area network that uses radio waves as a data transmission medium, and the transmission distance is generally only several tens of meters.

Rrc (radio resource control): radio resource control

The RRC processes the third layer information of the control plane between the UE and the radio access network. Typically including at least one of the following functions:

and broadcasting information provided by a non-access stratum of the core network. RRC is responsible for the broadcast of network system information to the UE. The system information is typically repeated according to a certain basic rule, and the RRC is responsible for performing the planning, segmentation and repetition. Broadcasting of upper layer information is also supported.

The broadcast information is associated to an access stratum. RRC is responsible for the broadcast of network system information to the UE. The system information is typically repeated according to a certain basic rule, and the RRC is responsible for performing the planning, segmentation and repetition.

The RRC connection between the UE and the radio access network is established, re-established, maintained and released. To establish the first signal connection for the UE, an RRC connection is requested to be established by the higher layers of the UE. The RRC connection establishment procedure includes several steps of reselection of available cells, access admission control and establishment of a layer 2 signal link. RRC connection release is also requested by higher layers for the purpose of tearing down the last signal connection; or by the RRC layer when the RRC link fails. If the connection fails, the UE may request that the RRC connection be reestablished. If the RRC connection fails, the RRC releases the already allocated resources.

The function of RRC may also vary as the network evolves and is not described here as a limitation.

Drawings

Fig. 1a and 1b are schematic diagrams of a CoMP scenario;

FIG. 2 is a schematic diagram of one possible system network;

fig. 3 is a schematic flowchart of an information transmission method according to an embodiment of the present invention;

fig. 4a is a schematic diagram of an apparatus (e.g., a user equipment) for information transmission according to an embodiment of the present invention;

fig. 4b is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 5a is a schematic diagram of another apparatus (e.g., a wireless network device) for information transmission according to an embodiment of the present invention;

fig. 5b is a schematic structural diagram of a wireless network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Further, various aspects are described herein in connection with a wireless network device, which is one type of wireless device and may also be a terminal device. The wireless network device may be a base station, and the base station may be configured to communicate with one or more user devices, and may also be configured to communicate with one or more base stations having a function of part of the user devices (for example, communication between a macro base station and a micro base station, such as an access point); the wireless device may also be a user device, which may be used for communication with one or more user devices (e.g., D2D communication) and may also be used for communication with one or more base stations. The user equipment may also be referred to as a user terminal and may include some or all of the functionality of a system, subscriber unit, subscriber station, mobile radio terminal, mobile device, node, device, remote station, remote terminal, wireless communication device, wireless communication apparatus, or user agent. The user equipment may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a smart phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a laptop computer, a handheld communication device, a handheld computing device, a satellite radio, a wireless modem card, and/or other processing device for communicating over a wireless system. A base station may also be called, and may include some or all of the functionality of, an access point, a node B, an evolved node B (enb), a gNB, a transceiver point (TRP), a Transmission Point (TP), or some other network entity. The base stations may communicate with the wireless terminals over the air interface. The communication may be through one or more sectors. The base station may act as a router between the wireless terminal and the rest of the access network, including an Internet Protocol (IP) network, by converting received air-interface frames to IP packets. The base station may also coordinate the management of attributes for the air interface and may also be a gateway between a wired network and a wireless network.

This application is intended to present various aspects, embodiments or features around a system that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.

Additionally, in embodiments of the present invention, the term "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

In the embodiment of the present invention, information (information), signal (signal), message (message), and channel (channel) may be mixed, and it should be noted that the intended meanings are consistent when the differences are not emphasized. "of", "corresponding", and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.

In the examples of the present invention, the subscripts are sometimes as follows₁It may be mistaken for a non-subscripted form such as W1, whose intended meaning is consistent when the distinction is de-emphasized.

The network architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

The embodiment of the invention can be applied to a Time Division Duplex (TDD) scene and a Frequency Division Duplex (FDD) scene.

Fig. 2 shows a schematic diagram of a possible system network according to an embodiment of the present invention. As shown in fig. 2, at least one user equipment UE10 communicates with a Radio Access Network (RAN). The RAN comprises at least one base station 20 (BS), of which only one base station and one UE are shown for clarity. The RAN is connected to a Core Network (CN). Optionally, the CN may be coupled to one or more external networks (external networks), such as the internet, Public Switched Telephone Network (PSTN), and the like.

The embodiment of the invention can be applied to a traditional typical network and can also be applied to a future UE-centric (UE-centric) network. A UE-centric network introduces a network architecture without a cell (Non-cell), that is, a large number of small stations are deployed in a certain area to form a super cell (super cell), and each small station is a Transmission Point (TP) or a TRP of the super cell and is connected to a centralized controller (controller). When the UE moves in the Hyper cell, the network side equipment selects a new sub-cluster for the UE to serve, thereby avoiding real cell switching and realizing the continuity of UE service. The network side device comprises a wireless network device.

As shown in fig. 1a and fig. 1b, the transmission delay from different base stations to the UE is different, which may result in the degradation of transmission performance.

In view of this, embodiments of the present invention provide an information transmission method, so that transmission delay differences from different base stations to a UE can be measured, so that the base stations can receive the transmission delay differences from the UE, and perform corresponding phase adjustment according to the transmission delay differences, so that the transmission delay differences of the base stations transmitting with the same UE are within an acceptable range, for example, are smaller than a preset threshold, thereby improving transmission performance.

In the embodiment of the present invention, different base stations may be base stations with different identities, or base stations with the same identity and deployed in different geographic locations. Since the base station does not know whether the base station relates to the application scenario of the embodiment of the present invention before the base station is deployed, the base station or the baseband chip should support the method provided by the embodiment of the present invention before the base station is deployed. It is to be understood that the base stations with different identities can be base station identities, cell identities, or other identities. That is to say, different wireless network devices, such as base stations, in the embodiments of the present invention mainly refer to wireless network devices that cause different transmission delays to the UE, and generally refer to wireless network devices in which radio frequency units are deployed at different geographic locations.

Some of the scenarios in the embodiment of the present invention are described by taking a scenario of a 4G network in a wireless communication network as an example, it should be noted that the scheme in the embodiment of the present invention may also be applied to other wireless communication networks, and corresponding names may also be replaced with names of corresponding functions in other wireless communication networks.

It should be noted that the method or apparatus in the embodiments of the present invention may be applied between a wireless network device and a user equipment, may also be applied between a wireless network device and a wireless network device (such as a macro base station and a micro base station), and may also be applied between a user equipment and a user equipment (such as a D2D scenario).

Fig. 3 is a flowchart of an information transmission method according to an embodiment of the present invention, as shown in fig. 3, including:

and S1, the UE receives a first reference signal and obtains a first transmission delay according to the first reference signal.

Illustratively, the UE receives a first reference signal from a second wireless network device.

Alternatively, the first reference signal may be a reference signal for transmission delay measurement predefined by a protocol, so that the UE does not need to determine which signal is used for transmission delay measurement according to the configuration information.

Optionally, the UE determines the first reference signal as a reference signal for measurement of transmission delay according to the configuration information.

Illustratively, the UE receives the configuration information from the first wireless network device, as shown at S00.

Optionally, the first wireless network device and the second wireless network device may be the same wireless network device, or may be different wireless network devices. For example, the first wireless network device is a wireless network device to which a serving cell of the UE belongs, and the second wireless network device is a wireless network device to which a non-serving cell of the UE belongs. Alternatively, the first wireless network device and the second wireless network device may share the baseband unit and have different radio frequency units, such as radio frequency units that may be deployed in different geographical locations. The first wireless network device and the second wireless network device may also share neither the baseband unit nor the radio frequency unit.

For example, the UE may receive a synchronization signal or a reference signal from the first wireless network device (the UE and the first wireless network device reach a synchronized state), and receive the first reference signal through a receiver of the UE. Since the sequence of the first reference signal is known to the UE, the UE can obtain the adjustment required to correctly receive the first reference signal through the adjustment of the receiver of the UE, thereby obtaining the transmission delay of the first reference signal.

In one possible embodiment, S11, the UE sends the obtained information of the first transmission delay.

It can be understood that the information of the first transmission delay may be an index of the transmission delay corresponding to the first transmission delay, or may be quantized information corresponding to the first transmission delay, which is not described herein again. The correspondence between the information of the first transmission delay and the first transmission delay may be stored in advance in the UE and the wireless network device side, thereby reducing overhead required for transmission delay transmission.

Illustratively, the UE sends information of the first transmission delay to the first wireless network device and/or the second wireless network device. In this way, the first wireless network device and/or the second wireless network device may perform phase adjustment according to the information of the first transmission delay. In this way, under the condition that both the second wireless network device and the first wireless network device transmit data (including signaling) to the UE, the transmission delay of the data received by the UE from the first wireless network device and the data received by the UE from the second wireless network device may be smaller than the preset threshold, thereby improving the transmission performance. Optionally, under the condition that the UE does not send the information of the first transmission delay to the second wireless network device, the first wireless network device may send the information of the first transmission delay to the second wireless network device, so that the second wireless network device adjusts the phase according to the information of the first transmission delay.

Optionally, S2, the UE may receive a second reference signal. Illustratively, the second reference signal is received from a third wireless network device. And the UE obtains a second transmission time delay according to the second reference signal.

Alternatively, the second reference signal may be a reference signal for transmission delay measurement predefined by a protocol, so that the UE does not need to determine which signal is used for transmission delay measurement according to the configuration information.

Optionally, the UE determines the second reference signal as a reference signal for measurement of transmission delay according to the configuration information.

S2 is similar to S1, and reference may be made to the description in S1, which is not repeated herein.

It is to be understood that the second reference signal and the first reference signal may be the same kind of reference signal, for example, both reference signals used for channel state information acquisition, such as channel state information reference signal CSI-RS, or different kinds of reference signals, for example, one is a reference signal used for channel state information acquisition and the other is a reference signal used for demodulation, such as demodulation reference signal DMRS.

Alternatively, the third wireless network device and the first wireless network device or the second wireless network device may share the baseband unit and have different radio frequency units, such as radio frequency units that may be deployed in different geographical locations. The third wireless network device and the first wireless network device or the second wireless network device may not share the baseband unit nor the radio frequency unit.

In one possible implementation, S211, the UE may send information of the second transmission delay. For example, the information of the second transmission delay is sent to the first wireless network device and/or the third wireless network device. It can be understood that the information of the second transmission delay may be an index of the transmission delay corresponding to the second transmission delay, or may be quantized information corresponding to the second transmission delay, which is not described herein again. The correspondence between the information of the second transmission delay and the second transmission delay may be stored in advance in the UE and the wireless network device side, thereby reducing overhead required for transmission delay transmission.

Therefore, the second wireless network device and/or the third wireless network device can perform corresponding phase adjustment through the acquisition of the first transmission delay and/or the second transmission delay and the transmission of the information of the first transmission delay and/or the second transmission delay, so that the difference of the transmission delays of any two or three of the first wireless network device, the second wireless network device and the third wireless network device can be smaller than a threshold value in the process of communicating with the UE, and the effect of reaching the UE at the same time in a way close to the theory is achieved.

In another possible implementation, S3, the UE obtains the transmission delay difference according to the first transmission delay and the second transmission delay.

Optionally, S31, the UE sends the information of the transmission delay difference.

For example, the UE may send the information of the transmission delay difference to at least one of the first, second, and third wireless network devices, so that at least one of the first, second, and third wireless network devices may adjust the phase according to the information of the transmission delay difference, and further, in a process of communicating with the UE, any two or three of the first, second, and third wireless network devices may have the transmission delay difference smaller than a threshold value, thereby achieving an effect of reaching the UE at the same time in a manner close to the theoretical effect.

It can be understood that the information of the transmission delay difference may be an index of the transmission delay difference, or may be information of the transmission delay difference after quantization, which is not described herein again. The corresponding relation between the information of the transmission delay difference and the transmission delay difference can be stored in the UE and the wireless network equipment side in advance, so that the overhead required by transmission delay transmission is reduced.

Optionally, the UE may learn, according to the configuration information included in S00, that the first reference signal and/or the second reference signal are used for obtaining the transmission delay and/or the transmission delay difference.

It should be understood that the sequence between the steps in fig. 3 does not indicate the sequence of the steps, for example, S1 and S2 may be performed simultaneously or not, S00 may be performed before or in between the other steps, S00 may be included in a single configuration or a plurality of configurations, and the time of the plurality of configurations may be performed according to the actual system requirements, which is not limited in the embodiment of the present invention.

For example, the configuration information may include first indication information and/or second indication information, where the first indication information is used to indicate that the first reference signal is used for measurement of transmission delay (e.g., the UE obtains a transmission delay difference and/or a transmission delay based on the first reference signal), and the second indication information is used to indicate that the second reference signal is used for measurement of transmission delay (e.g., the UE obtains a transmission delay difference and/or a transmission delay based on the second reference signal).

For brevity of description, in the following embodiment, the configuration information in S00 is sometimes described by taking the obtaining and/or feedback of the transmission delay difference as an example, and it is understood that the corresponding configuration information may also be used for obtaining and/or feedback of the transmission delay, that is, the transmission delay difference may be replaced by the first or second transmission delay, which is not described herein again.

the first indication information is included in at least one of a channel state information measurement set domain, a channel state information report set domain, or a reference signal resource domain, and is used to indicate that a reference signal corresponding to one of reference signal resource identifiers included in the at least one of the channel state information measurement set domain, the channel state information report set domain, or the reference signal resource domain is a first reference signal, and the first reference signal is used for measurement of transmission delay.

For example, a Time-delay-Config (Time-delay-configuration), i.e., the first indication information, may be configured in a channel state information measurement set (CSI measurement setting) field.

For example, one or more of a resource set identification (resource setting ID), a CSI measurement set ID (CSI measurement setting ID), a resource ID (resource ID) may be included in the latency measurement information field. The CSI measurement setting ID is an identifier corresponding to configuration information of a set for performing CSI measurement, the resource setting ID is an identifier corresponding to configuration information of a resource set, the resource set may include a resource for channel measurement and/or a resource for interference measurement, and the resource ID is an identifier corresponding to configuration information of the resource. For example, a UE may be configured with N ≧ 1 CSI reporting sets (reporting setting), M ≧ 1 resource set and 1 CSI measurement setting, where a CSI measurement setting may include L ≧ 1 link. Wherein each CSI reporting setting at least comprises: the CSI parameters reported, the CSI type (I or II) (if reported), the codebook configuration (including codebook subset constraints), the time-domain behavior, the frequency spacing for CQI (channel quality information) and PMI (precoding matrix information), the measurement constraint configuration, etc. Each resource set may include: s ≧ 1 configuration of CSI-RS resource sets (where different sets correspond to different choices from all CSI-RS resource pools configured to the UE). The configuration of the Ks ≧ 1 CSI-RS resource in each set at least includes: mapping of Resource Elements (REs), port number, time domain behavior, etc. Each of the L links in the CSI measurement setting has: CSI reporting setting indicates, resource setting indicates, quality information (such as channel or interference) to be measured, wherein one CSI reporting set may be associated with one or more resource setting, and multiple CSI reporting sets may be associated with the same resource setting.

Optionally, the CSI measurement setting, resource setting, and resource may enable the UE to know what the received information is through a fixed location in the configuration information, or may also know what the received information is through a difference between their IDs.

Specifically, one possible description of Time-delay-Config is as follows:

Time-delay-Config SEQUENCE(SIZE(1..2))OF resource ID

and/or SEQUENCE(SIZE(1..2))OF resource setting ID

and/or SEQUENCE(SIZE(1..2))OF CSI measurement setting ID

it is to be understood that one resource setting ID may include one or more resource IDs, and if multiple resource IDs are included in the resource setting field, it may be predefined to use the smallest ID or indicate a specific resource ID in the field for transmission delay measurement through other indication information, such as an index indication that is added when the resource setting ID is indicated, the index indication indicating the number of resources in the resource setting ID for transmission delay measurement, or a source ID under the resource setting ID. Similarly, one CSI measurement setting ID may also include one or more resource setting IDs, and the UE may also determine specific resources for transmission delay measurement through predefined or other indication information.

For example, the resource ID included in the resource setting ID is 2,3, 5. When index is 1, it indicates the first resource, that is, the resource ID is the RS resource corresponding to 2; when index is 2, it represents the second resource, i.e. the resource ID is 3 corresponding resource; and so on. Or when index is 0, the first resource is represented, that is, the resource ID is the resource corresponding to 2; when index is 1, it represents the second resource, that is, the resource whose RS resource ID is 3; and so on.

Similarly, the second indication information for indicating that the second reference signal is used for measurement of the transmission delay includes:

the second indication information is included in at least one of a channel state information measurement set domain, a channel state information report set domain, or a reference signal resource domain, the first indication information is used to indicate that a reference signal corresponding to one of reference signal resource identifiers included in the at least one of the channel state information measurement set domain, the channel state information report set domain, or the reference signal resource domain is a second reference signal, and the second reference signal is used for measuring transmission delay.

How the second indication information indicates may refer to the indication manner of the first indication information, which is not described herein again.

It is to be understood that when the first indication information and the second indication information may be included in the same Time-delay-Config, it may be distinguished by a predefined or fixed position or indication information as to whether the first indication information or the second indication information. The first indication information and the second indication information may also be included in different Time-delay-Config, and at this Time, the UE may distinguish the first indication information and the second indication information by using different fixed positions of the Time-delay-Config, or distinguish the first indication information and the second indication information by using different Time-delay-Config IDs, which is not described herein again.

In the case of propagation delay difference measurement, in one possible implementation, the first reference signal is a reference baseline for propagation delay measurement.

In this way, the way of knowing that the first reference signal and/or the second reference signal is used for obtaining the transmission delay may be:

in a first manner, the first indication information is further used to indicate that the first reference signal is a reference baseline for transmission delay measurement.

In this manner, the first indication information further indicating that the first reference signal is a reference baseline for transmission delay measurement may include:

The configuration of the information of the reference baseline for the transmission delay measurement may be indicated by higher layer signaling, such as RRC signaling or mac (media access control) signaling, or may be indicated by physical layer signaling, such as DCI signaling. The indication may also be performed by means of a common indication of higher layer signaling and physical layer signaling, for example, by means of higher layer signaling to indicate multiple configurations, and by means of physical layer signaling to enable one or more of the configurations. For example, the UE is made aware that the reference baseline for the transmission delay measurement is the first reference signal by enabling the first reference signal to be the reference baseline for the transmission delay measurement.

When the enabled reference baseline is one, the configuration information may not otherwise indicate which resource's baseline the second reference signal refers to for measurement of transmission delay is signaled.

In the case that there is one or more than one enabled reference baseline or indicated reference baseline, the configuration information may further include fourth indication information, where the fourth indication information is used to indicate that the baseline referred to when the second reference signal is used for measurement of transmission delay is the first reference signal, or the second indication information is also used to indicate that the baseline referred to when the second reference signal is used for measurement of transmission delay is the first reference signal.

For example, the first information field may be a latency baseline Time-delay-base field, which may include one or more of a resource set identification (resource setting ID), a CSI measurement set ID (CSI measurement setting ID), or a resource ID (resource ID). The first information field comprises said first indication information, such that the first indication information may be used to indicate that the first reference signal may be information of a reference baseline for propagation delay (difference) measurements. The first indication information may be a resource ID of the first reference signal, or a resource set ID to which the first reference signal belongs, or a CSI measurement setting ID to which the first reference signal belongs, or a combination of one or more of them. Reference may be made specifically to the description of the Time-delay-Config field mentioned above.

The configuration of the first information field may be transmitted together with the configuration information of the specific first reference signal (e.g. time domain behavior of the first reference signal, port number, etc.), or may be transmitted separately.

The UE may obtain a reference baseline for transmission delay measurement through the first information field.

The UE may also learn, through indication information in the CSI measurement setting or information in the Time-delay-Config domain, that reporting of the transmission delay difference needs to be performed, and/or learn that measurement and/or feedback of the transmission delay difference needs to be performed for the second reference signal. Therefore, the UE can obtain the transmission delay difference according to the second reference signal and the corresponding reference baseline, and report the information of the transmission delay difference.

Optionally, the wireless network device may also configure multiple reference baselines, for example, each reference baseline may be added with one piece of identification information. And indicating which reference baseline of the second reference signal is in the CSI measurement setting or the Time-delay-Config domain, so that the UE can perform corresponding measurement and report.

The reference baseline configuration method is exemplified as follows, wherein the Time-delay-baseline config id is a delay baseline configuration identification field, and the Time-delay-baseline config id may be a specific identification value, such as 0,1,2,3, …, and may be a natural number or a positive integer. The Time-delay-baseline-resource is the baseline reference resource information field.

Or may be put together with a plurality of configuration information, such as:

or

Time-delay-baseline＝{

time-delay-baselineConfigIDList sequence(SIZE(2..8))of Time-delay-baselineConfigID

Time-delay-baseline-resourceList sequence(SIZE(2..8))of resource setting ID or resourceID or CSI measurement setting ID

}

Optionally, the configuration in the CSI measurement setting is as follows, where resource-setting ID config is used to indicate a resource set ID, CSI-reporting-setting ID config is used to indicate a CSI reporting (or feedback) set ID, time-delay-baseeconfigid is used to indicate a configuration ID of the latency reference baseline, and time-delay-baseline is used to indicate a latency reference baseline ID.

CSI measurement setting Config＝{

resouce-settingIDConfig sequence(SIZE(1..8))of resource-setting ID

CSI-reporting-settingIDConfig sequence(SIZE(1..8))of CSI-reporting-settingID

time-delay-baselineConfigID Time-delay-baselineConfigID

or time-delay-baseline resource setting ID or resource ID or CSI measurement setting ID

}

Through the above configuration, the UE may know which resource the second reference signal is used for measuring the transmission delay (specifically, the second reference signal may be which resource in the CSI measurement setting and may be predefined by a protocol or may be indicated by the indication information, please refer to the description of the foregoing second indication information, which is not described herein), and the resource information corresponding to the second reference signal, and may also know a delay reference referred to when the second reference signal is used for measuring the transmission delay. Therefore, the UE can measure the transmission delay difference and report the information of the transmission delay difference. It can be understood that, in the above configuration, the second indication information may be the time-delay-baseline configid or the time-delay-baseline, that is, the second indication information is used to indicate both resource information corresponding to the second reference signal and a delay reference referred to when the second reference signal is used for measuring the transmission delay. Optionally, the second indication information may further trigger measurement and/or reporting of a transmission delay difference corresponding to the second reference signal.

Specifically, the application scenario for configuring multiple reference bases may be as follows:

when a plurality of cells are included in the coordinated set or each cell includes a plurality of beams, in order to measure a delay difference between cells actually transmitted during coordinated transmission or a delay difference between a plurality of beams, it may be considered to configure a plurality of reference baselines. For example, when the cooperative cells are1, 2,3,4,5,6, it is assumed that the combinations of cells that may be cooperatively transmitted are (1,2), (1,3), (4,5), and (4, 6). At this time, the delay baseline 1 may be configured to be the resource information sent by the cell 1, and the delay baseline 2 may be configured to be the resource information of the cell 4. Further, it is only necessary to measure at least one of the differences in transmission delay between the cell 2 and the cell 1, between the cell 3 and the cell 1, between the cell 5 and the cell 4, and between the cell 6 and the cell 4. Therefore, unnecessary transmission delay differences such as transmission delay differences between the cell 4 and the cell 1, transmission delay differences between the cell 5 and the cell 1, and transmission delay differences between the cell 6 and the cell 1 can be avoided, and overhead is reduced.

For example, it is assumed that CSI measurement setting 2 is measurement configuration information corresponding to the cell 2, CSI measurement setting 3 is measurement configuration information corresponding to the cell 3, CSI measurement setting 5 is measurement configuration information corresponding to the cell 5, and CSI measurement setting 6 is measurement configuration information corresponding to the cell 6. The latency baseline configuration information may be as follows:

optionally, the delay baseline configuration may also be placed in a resource setting or CSI reporting setting domain, for example, as follows:

in a second manner, the configuration information further includes fifth indication information, where the fifth indication information is used to indicate that the first reference signal is a reference baseline for transmission delay measurement.

The configuration of the information of the reference baseline for the transmission delay measurement may be indicated by higher layer signaling, such as RRC signaling or mac (media access control) signaling, or may be indicated by physical layer signaling, such as DCI signaling. The indication may also be performed by means of a common indication of higher layer signaling and physical layer signaling, for example, by means of higher layer signaling to indicate multiple configurations, and by means of physical layer signaling to enable one or more of the configurations. For example, the UE is made aware that the reference baseline for the transmission delay measurement is the first reference signal by enabling the first reference signal as the reference baseline for the transmission delay measurement, such as the aforementioned fifth indication information is used for the enabling.

For example, fifth indication information may be added to the resource field corresponding to the first reference signal in the Time-delay-Config field, for example, a Time-delay-baseline field, where the field indicates that the first reference signal is used as the delay reference when the field is 1, and indicates that the first reference signal is not used as the delay reference when the field is 0. A fourth indication information may also be added in the resource domain corresponding to the second reference signal, where the fourth indication information may be a time-delay-baseline field, and an identifier in the field may indicate a baseline to which the second reference signal is referred when used for measuring the transmission delay, for example, a resource identifier of the first reference signal.

Optionally, the UE may perform feedback of the information of the transmission delay and/or the transmission delay difference according to the configuration information included in S00.

Specifically, the configuration information may include sixth indication information, where the sixth indication information is used to indicate feedback information of the transmission delay and/or the transmission delay difference.

Optionally, the obtaining and/or the feedback of the transmission delay or the transmission delay difference may be periodic or aperiodic. The following description is given by taking the transmission delay difference as an example, and it is understood that the following description can also be applied to the transmission delay.

In the case of the period, the feedback information indicating the propagation delay difference used by the sixth indication information includes:

the sixth indication information may include information related to periodic feedback including information indicating a periodic feedback period and an offset.

The information related to the periodic feedback may be indicated by higher layer signaling, such as RRC signaling or mac (media access control) signaling, or may be indicated by physical layer signaling, such as DCI signaling. The indication may also be performed by means of a common indication of higher layer signaling and physical layer signaling, for example, by means of higher layer signaling to indicate multiple configurations, and by means of physical layer signaling to enable one or more of the configurations.

Specifically, the information for indicating the period feedback period and the offset may be identification information, where the identification information corresponds to one period feedback period and the offset, or the information for indicating the period feedback period and the offset may also be information of the period feedback period and information of the period feedback offset, or may be in other manners, which is not described herein again. The UE can obtain the period and the offset of the periodic feedback according to the sixth indication information, and then perform corresponding feedback.

Exemplified by_{time_delay}Indicating the aforementioned flag, N, corresponding to the feedback period and offset of one period_pdIndicating the period of periodic feedback, N_OFFSETThe bias representing the periodic feedback is taken as an example, and the specific reporting time may be sufficientThe following exemplary modes:

wherein n is_fFor numbering time units comprising 1 or more time slots for feedback, e.g. subframe number, n_sIs the slot number of the feedback. N is a radical of_nsIndicating the number of time slots included in one of the aforementioned time units.

Taking LTE system as an example, in LTE one radio frame includes 10 subframes. One subframe includes 2 slots, the slot numbers being integers from 0 to 19. The number of the radio frame is 0 to 1023. The number of the subframes is an integer from 0 to 9. I is_{time_delay}And N_pdAnd N_OFFSETCan be shown in the following table one:

watch I (subframe unit)

Taking the NR system as an example, when the subcarrier spacing is 60kHz, 2 slot slots constitute a larger time unit, such as a subframe (also referred to as the name of other time units), each slot may include 4 micro slots mini-slots, and each micro slot may include 7 symbols. The specific reporting time may satisfy the following exemplary manner:

Or, the specific reporting time may satisfy the following exemplary manner:

wherein n is_fFor numbering time units comprising 1 or more time slots for feedback, e.g. subframe number, n_sNumber of time slots for feedback, n_mini-sIs the number of the micro-slot fed back. N is a radical of_nsIndicating the number of time slots included in one of the aforementioned time units. N is a radical of_minisIndicating the number of minislots included in one slot.

Or, the specific reporting time may satisfy the following exemplary manner:

wherein n is_fFor numbering time units comprising 1 or more time slots for feedback, e.g. subframe number, n_minisIs the number of the micro-slot fed back. N is a radical of_minis-sIndicating the number of minislots included in one of the aforementioned time units.

Such as: one radio frame includes 10 subframes in NR. One subframe includes 2 slots, the slot numbers being integers from 0 to 19. The minislot numbers are integers from 0 to 79. The number of the radio frame is 0 to 1023. The number of the subframes is an integer from 0 to 9. I is_{time_delay}And N_pdAnd N_OFFSETCan be shown in the following table two:

watch two

(N_pdThe value unit of (A) can be a certain time unit, such as subframe, time slot, micro-slot, etc., N_OFFSETThe value unit can be a certain time unit, such as a subframe, a time slot or a micro-time slot, and the value units of the two can be the same or different)

In the aperiodic case, the feedback information indicating the propagation delay difference used by the sixth indication information may include:

the sixth indication information includes information related to aperiodic feedback, and the information related to aperiodic feedback may include one or more of information for indicating a start of feedback of the propagation delay difference, information of a number of times of feedback, information for indicating an end of feedback of the propagation delay difference, information for indicating a start time and an end time of one-time propagation delay difference feedback, and the like. And the information of the feedback times is used for indicating the feedback times of the transmission delay difference.

The information related to the aperiodic feedback may be indicated by higher layer signaling, such as RRC signaling or mac (media access control) signaling, or may be indicated by physical layer signaling, such as DCI signaling. The indication may also be performed by means of a common indication of higher layer signaling and physical layer signaling, for example, by means of higher layer signaling to indicate multiple configurations, and by means of physical layer signaling to enable one or more of the configurations.

For example, the indication is performed through RRC signaling, and specifically, the fed-back time-frequency-domain resource information may be indicated, and the time-frequency-domain resource information may also be predefined by a protocol, for example, a last symbol, or a first PRB or a last PRB in a frequency domain, and the aforementioned time-frequency-domain resource information indicating the feedback may also be indicated through DCI signaling.

Optionally, information (also referred to as trigger information for short) for indicating the start of the feedback of the transmission delay difference may also be sent through DCI signaling, and the UE may perform feedback at a specified time after receiving the trigger information, for example, perform feedback after a number of subframes by default, such as 4 subframes.

Specifically, the trigger information of the transmission delay may be configured in the DCI, for example, 1bit indicates that the UE needs to report the transmission delay.

Optionally, the measurement and/or reporting of the transmission delay (or the transmission delay difference) may also be triggered based on the configuration in the RRC signaling.

For example, feeding back the information of the transmission delay and/or the transmission delay difference in the PUCCH, may trigger the UE to perform measurement and/or reporting of the transmission delay (or the transmission delay difference) by indicating the transmission format of the PUCCH, for example, format 4 is used to indicate measurement and/or reporting of the transmission delay (or the transmission delay difference); or, feeding back the information of the transmission delay or the transmission delay difference in the CSI may trigger the UE to perform measurement and/or reporting of the transmission delay (or the transmission delay difference) by indicating a feedback type of the CSI, where, for example, type 10 is used to indicate that measurement and/or reporting of the transmission delay (or the transmission delay difference) is supported, where the information of the transmission delay or the transmission delay difference may be jointly encoded with the CSI, for example, jointly encoded with the PMI and the CQI and then reported, or may be independently encoded, for example, independently encoded and then reported together with the RI, or independently encoded and then reported independently (that is, time domain or frequency domain resources are not multiplexed with reporting of the CSI).

Optionally, when the number of aperiodic feedbacks is multiple, the start time and the end time of the feedback may be indicated in RRC signaling or DCI. The manner of indicating the start time and the end time of the feedback may be one or more of the following manners:

in a first mode, the trigger information triggers the UE to feed back multiple times, for example, triggers the UE to feed back 5 times once, where the number of times of feedback may be predefined by the protocol.

Further, the trigger information may also be an indication of feedback time information.

And the second mode indicates feedback time information.

Such as:

the trigger information may be a semi-static feedback semi-persistent report field, occupying 1bit, for example, 0 indicates that the trigger is normally triggered to report once, and 1 indicates that the trigger is fed back for multiple times.

The information of the feedback times may be a report number field occupying 1bit, 2 bits, or the like, and specifically may determine the number of occupied bits according to the maximum report times, where the information indicates the specific feedback times.

The feedback time information may be indicated by enumerating the feedback times, for example, in a report number field, using an ENUMERATED value, such as report number estimated {5,10,15,20, spare1 }.

And a third mode is to indicate the feedback starting time and the feedback ending time, for example, the starting time is the frame number 5, and the ending time is the frame number 25.

For example, StartReportFrameNumber indicates a frame number for starting reporting, and StopReportFrameNumber indicates a frame number for ending reporting.

StartReportFrameNumber ENUMERATED{5,10,15,20,25,spare1}

StopReportFrameNumber ENUMERATED{5,10,15,20,25,spare1}

It is understood that the frame number may be other time units, such as a subframe, a slot, etc.

And in the fourth mode, the trigger message is sent to indicate that the report is started when the report is reported, and the trigger message is sent to indicate that the report is ended when the report is ended.

For example, the presence of the StartReportTrigger indicates that reporting is started, the reporting behavior may take effect from the next time or from the next X times, and X may be predefined by the protocol or indicated by other signaling.

The StopReport Trigger indicates that the message exists, and then indicates that the report is stopped, the report ending behavior can also take effect at the next moment or take effect at the next Y moments, and Y can be predefined by a protocol or indicated by other signaling.

Optionally, the information of the transmission delay and/or the transmission delay difference may be included in an uplink control signal (channel), such as a Physical Uplink Control Channel (PUCCH), or may be included in Channel State Information (CSI). For example, the transmission may be performed by adding a new format or redefining an existing format (e.g., adding a corresponding field to the existing format).

If the information of the transmission delay and/or the transmission delay difference is included in the CSI, optionally, the UE may further receive seventh indication information, where the seventh indication information is used to indicate that the information of the transmission delay and/or the transmission delay difference is included in the channel state information for feedback. It is to be understood that the seventh indication information may also be used for triggering the obtaining and/or feedback of the information of the transmission delay and/or the transmission delay difference.

Optionally, the seventh indication information may be information of a feedback type of CSI. When the UE receives the feedback type information of the CSI, the UE knows that the transmission delay and/or the transmission delay difference information is included in the channel state information for feedback.

For example, if the feedback type of the CSI is type (type)10 feedback, it indicates that feedback of transmission delay and/or transmission delay difference is supported. Specifically, the transmission delay and/or the transmission delay difference may be fed back after being jointly encoded with CSI, such as PMI and CQI, or may be fed back together with CSI, such as RI, after being independently encoded.

In the case that the information of the transmission delay and/or the transmission delay difference is included in the uplink control signal (channel), a transmission format, such as format 4, may be added to the feedback of the uplink control channel, and may indicate that the information of the transmission delay and/or the transmission delay difference needs to be fed back in the uplink control channel. It is to be understood that the transport format may also be used for the obtaining and/or feedback of information triggering the transmission delay and/or the transmission delay difference.

Optionally, the feedback of the transmission delay and/or the transmission delay difference may be performed by quantizing or encoding the transmission delay and/or the transmission delay difference, for example, by feeding back through a plurality of bits, such as 3bits or 4 bits. The feedback is information of the transmission delay and/or the transmission delay difference, such as index information.

For example, the propagation delay difference may be 100ns,200ns,300ns, …, -100ns, -200ns, -300ns, indexed by the following table. It is understood that the index and value are merely exemplary and that other values are possible.

Alternatively 16Ts,32Ts,64Ts,128Ts,256Ts, …, -16Ts, -32Ts, -64Ts, -128Ts, -256Ts, … … are indexed by the following table. Where Ts is a time unit, e.g. in LTE system, Ts is 1/(15000 × 2048) seconds(s), where 15000 is the subcarrier interval and 2048 is the number of sampling points. The index and value are merely exemplary and other values are possible.

Or feedback is performed through other quantization formats and values, which are not described herein.

Thus, by the information transmission method shown in fig. 3, the UE can obtain the transmission delay and/or the transmission delay difference according to the reference signal, and further, the transmission delay and/or the transmission delay difference is sent to the wireless network device by the UE, so that at least one of at least two wireless network devices communicating with the UE can adjust the phase, and further, the transmission delay difference of data received by the UE from the at least two wireless network devices is smaller than the threshold value, thereby achieving an effect of approaching to simultaneous theoretical reception, and further improving transmission performance.

According to the foregoing method, as shown in fig. 4a, an embodiment of the present invention further provides an apparatus for information transmission, which may be a wireless device 10. The wireless device 10 may correspond to the user equipment in the above method.

The apparatus may include a processor 110 and a memory 120. Further, the apparatus may further include a receiver 140 and a transmitter 150. Further, the apparatus may further include a bus system 130, wherein the processor 110, the memory 120, the receiver 140, and the transmitter 150 may be connected through the bus system 130.

The memory 120 is used for storing instructions, and the processor 110 is used for executing the instructions stored in the memory 120 to control the receiver 140 to receive signals and control the transmitter 150 to transmit signals, so as to complete the steps of the user equipment in the above method. Wherein the receiver 140 and the transmitter 150 may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation, the functions of the receiver 140 and the transmitter 150 may be realized by a transceiving circuit or a dedicated chip for transceiving. The processor 110 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general-purpose chip.

As another implementation manner, a wireless device provided by the embodiment of the present invention can be implemented by using a general-purpose computer. I.e., program code that implements the functions of the processor 110, the receiver 140, and the transmitter 150, is stored in the memory, and a general-purpose processor implements the functions of the processor 110, the receiver 140, and the transmitter 150 by executing the code in the memory.

For the concepts, explanations, details and other steps related to the technical solutions provided by the embodiments of the present invention related to the apparatus, reference is made to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

Fig. 4b provides a schematic structural diagram of a user equipment UE. The UE may be adapted for use in the system shown in fig. 2 and/or in the scenario as shown in fig. 1a and 1 b. For ease of illustration, fig. 4b shows only the main components of the user equipment. As shown in fig. 4b, the user equipment 100 comprises a processor, a memory, a control circuit, an antenna and input-output means. The processor is mainly configured to process the communication protocol and communication data, control the entire UE, execute a software program, and process data of the software program, for example, to support the UE to perform the actions described in the section of fig. 3. The memory is mainly used for storing software programs and data, for example, the codebook described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the user equipment is started, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to user equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 4b shows only one memory and processor for ease of illustration. In an actual user equipment, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole user equipment, execute a software program, and process data of the software program. The processor in fig. 4b integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the user equipment may include multiple baseband processors to accommodate different network formats, multiple central processors to enhance its processing capability, and various components of the user equipment may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

For example, in the embodiment of the present invention, the antenna and the control circuit with transceiving functions may be regarded as the transceiving unit 101 of the UE10, and the processor with processing functions may be regarded as the processing unit 102 of the UE 10. As shown in fig. 4b, the UE10 includes a transceiving unit 101 and a processing unit 102. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 101 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit 101 may be regarded as a sending unit, that is, the transceiver unit 101 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

According to the foregoing method, as shown in fig. 5a, another apparatus for information transmission is further provided in the embodiment of the present invention, where the apparatus may be a wireless device 20, and the wireless device 20 corresponds to the first wireless network device in the foregoing method. It is understood that the second wireless device may be other devices, and is not limited herein.

The apparatus may include a processor 210 and a memory 220. Further, the apparatus may further include a receiver 240 and a transmitter 250. Still further, the apparatus may also include a bus system 230.

The processor 210, the memory 220, the receiver 240 and the transmitter 250 are connected via the bus system 230, the memory 220 is used for storing instructions, and the processor 210 is used for executing the instructions stored in the memory 220 to control the receiver 240 to receive signals and control the transmitter 250 to transmit signals, so as to complete the steps of the first wireless network device in the above method. Wherein the receiver 240 and the transmitter 250 may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation manner, the functions of the receiver 240 and the transmitter 250 may be considered to be implemented by a transceiving circuit or a dedicated chip for transceiving. Processor 210 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general-purpose chip.

As another implementation manner, a wireless device provided by the embodiment of the present invention can be implemented by using a general-purpose computer. I.e. program code that implements the functions of the processor 210, the receiver 240 and the transmitter 250, is stored in a memory, and a general-purpose processor implements the functions of the processor 210, the receiver 240 and the transmitter 250 by executing the code in the memory.

According to the foregoing method, as shown in fig. 5b, an embodiment of the present invention further provides a schematic structural diagram of a wireless network device, such as a base station.

The base station may be applied in a system as shown in fig. 2 and/or in a scenario as shown in fig. 1a and 1 b. The base station 20 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 201 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 202. The RRU201 may be referred to as a transceiver unit, transceiver circuit, or transceiver, etc., which may include at least one antenna 2011 and a radio unit 2012. The RRU201 is mainly used for transceiving radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending signaling indication and/or reference signals described in the above embodiments to user equipment. The BBU202 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU201 and the BBU202 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.

The BBU202 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) can be used to control the base station to execute the flow shown in fig. 3.

In an example, the BBU202 may be formed by one or more boards, and the boards may support a radio access network (e.g., an LTE network) of a single access system together, or may support radio access networks of different access systems respectively. The BBU202 also includes a memory 2021 and a processor 2022. The memory 2021 is used to store the necessary instructions and data. For example, the memory 2021 stores the correspondence between the information of the propagation delay difference and the propagation delay difference in the above-described embodiment. The processor 2022 is configured to control the base station to perform necessary actions, for example, to control the actions of the base station as partially shown in fig. 3. The memory 2021 and the processor 2022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

According to the method provided by the embodiment of the present invention, an embodiment of the present invention further provides a communication system, which includes the first wireless network device and one or more user equipments.

It should be understood that in embodiments of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory.

The bus system may include a power bus, a control bus, a status signal bus, and the like, in addition to the data bus. For clarity of illustration, however, the various buses are labeled as a bus system in the figures.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made merely for convenience in description and is not intended to limit the scope of embodiments of the invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An information transmission method, comprising:

the user equipment determines a transmission delay difference between a first reference signal and a second reference signal according to the first reference signal and the second reference signal based on the first indication information and the second indication information;

alternatively, the first and second electrodes may be,

the user equipment determines a second transmission delay according to a second reference signal based on second indication information;

the first reference signal is a reference baseline for transmission delay measurement, the first indication information is included in a first information field, the first information field is used for indicating information of the reference baseline for transmission delay measurement, and the first information field includes one or more of a resource set identifier, a channel state information, CSI, measurement set identifier, or a resource identifier; the first information field further comprises third indication information in addition to the first indication information, the third indication information being used for indicating information of another reference baseline for transmission delay measurement;

and the user equipment receives fourth indication information, wherein the fourth indication information is used for indicating that a baseline referred by a second reference signal when used for measuring transmission delay is the first reference signal.

2. The method of claim 1, wherein the first indication information is used for indicating that the first reference signal is used for measurement of transmission delay, and wherein the method comprises:

3. The method of claim 2, wherein the second indication information is used for indicating that the second reference signal is used for measurement of transmission delay, and comprises:

the second indication information is included in at least one of a channel state information measurement set domain, a channel state information reporting set domain, or a reference signal resource domain, and is used to indicate the channel state information measurement set domain, the channel state information reporting set domain, or a reference signal corresponding to one of reference signal resource identifiers included in at least one of the reference signal resource domains is a second reference signal, and the second reference signal is used to measure transmission delay.

4. The method according to any one of claims 1-3, further comprising:

5. The method according to any one of claims 1-3, further comprising:

6. The method according to claim 5, wherein the information of the propagation delay difference and/or the propagation delay comprises an index of the propagation delay difference and/or the propagation delay, or a quantized value of the propagation delay difference and/or the propagation delay.

7. The method according to claim 4, wherein the information of the transmission delay difference and/or the transmission delay is included in an uplink control channel or included in channel state information.

8. The method according to claim 7, wherein the information of the transmission delay difference and/or the transmission delay is included in channel state information, and the method further comprises:

9. The method of claim 8, wherein the seventh indication information is a feedback type of channel state information.

10. An information transmission method, comprising:

the wireless network equipment receives information of transmission delay and/or transmission delay difference from user equipment, wherein the configuration information comprises first indication information and/or second indication information, the first indication information is used for indicating that a first reference signal is used for measuring transmission delay, and the second indication information is used for indicating that a second reference signal is used for measuring transmission delay;

11. The method of claim 10, wherein the first indication information is used for indicating that the first reference signal is used for measurement of transmission delay, and wherein the first indication information comprises:

12. The method according to claim 10 or 11, wherein the second indication information is used for indicating that the second reference signal is used for measurement of transmission delay, and comprises:

13. The method according to claim 10 or 11, wherein the configuration information further comprises sixth indication information, the sixth indication information is used for indicating the transmission delay difference and/or feedback information of the transmission delay,

14. The method according to claim 10-or 11, wherein the information of the transmission delay difference and/or the transmission delay is included in an uplink control channel or in channel state information.

15. The method according to claim 14, wherein the information of the transmission delay difference and/or the transmission delay is included in channel state information, and the configuration information further includes seventh indication information, and the seventh indication information is used for indicating that the information of the transmission delay difference and/or the transmission delay is included in the channel state information.

16. An apparatus comprising a processor and a memory,

the memory is configured to store instructions and the processor is configured to execute the memory-stored instructions, and when the processor executes the memory-stored instructions, the apparatus is configured to perform the method of any of claims 1 to 15.