CN118301727A

CN118301727A - Wireless communication method, terminal device and network device

Info

Publication number: CN118301727A
Application number: CN202310004667.8A
Authority: CN
Inventors: 魏天才
Original assignee: Zeku Technology Beijing Corp Ltd
Current assignee: Zeku Technology Beijing Corp Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2024-07-05

Abstract

The application provides a wireless communication method, terminal equipment and network equipment. In the method, the terminal equipment reports the uplink timing advance and the downlink timing advance of different carriers to the network equipment, so that the network equipment can more accurately acquire the uplink timing advance and the downlink timing advance of the terminal equipment in different carriers, and reliable guarantee is provided for communication between the subsequent terminal equipment and the network equipment. The method comprises the following steps: the method comprises the steps that a terminal device determines a plurality of timing advance, wherein the plurality of timing advance comprises an uplink timing advance of a first carrier, an uplink timing advance of a second carrier and a downlink timing advance of the second carrier; the terminal device sends a timing advance message to the network device, the timing advance message including the plurality of timing advances.

Description

Wireless communication method, terminal device and network device

Technical Field

The present invention relates to the field of communications, and more particularly, to a wireless communication method, a terminal device, and a network device.

Background

In the carrier aggregation scenario, the downlink signals of different carriers and the uplink signals of different carriers are not strictly time-synchronized. Also, the actual timing advance (TIMING ADVANCE, TA) of the uplink signals of the different carriers is also time varying. In general, it is difficult for the network device to perceive the difference of the accurate timing advance of the downlink signals of different carriers and the uplink signals of different carriers at the terminal device side, and in some communication services sensitive to time, the network device cannot optimize the relevant scheduling.

Disclosure of Invention

The application provides a wireless communication method, terminal equipment and network equipment, wherein the terminal equipment reports the uplink timing advance and the downlink timing advance of different carriers to the network equipment, so that the network equipment can more accurately acquire the uplink timing advance and the downlink timing advance of the terminal equipment on the different carriers, and reliable guarantee is provided for communication between subsequent terminal equipment and the network equipment.

In a first aspect, a wireless communication method is provided, including:

determining a plurality of timing advances, wherein the plurality of timing advances comprise an uplink timing advance of a first carrier, an uplink timing advance of a second carrier and a downlink timing advance of the second carrier;

And sending a timing advance message to the network equipment, wherein the timing advance message comprises the plurality of timing advances.

In a second aspect, a wireless communication method is provided, including:

And receiving a timing advance message sent by the terminal equipment, wherein the timing advance message comprises a plurality of timing advances, and the plurality of timing advances comprise an uplink timing advance of a first carrier, an uplink timing advance of a second carrier and a downlink timing advance of the second carrier.

In a third aspect, there is provided a terminal device comprising: a processing unit and a communication unit;

the processing unit is configured to determine a plurality of timing advances, where the plurality of timing advances include an uplink timing advance of a first carrier, an uplink timing advance of a second carrier, and a downlink timing advance of the second carrier;

The communication unit is configured to send a timing advance message to a network device, where the timing advance message includes the plurality of timing advances.

In a fourth aspect, there is provided a network device comprising: a communication unit;

The communication unit is configured to receive a timing advance message sent by a terminal device, where the timing advance message includes a plurality of timing advances, and the plurality of timing advances includes an uplink timing advance of a first carrier, an uplink timing advance of a second carrier, and a downlink timing advance of the second carrier.

In a fifth aspect, there is provided a terminal device, including: a transceiver and a processor; wherein,

The transceiver is configured to: determining a plurality of timing advances, wherein the plurality of timing advances comprise an uplink timing advance of a first carrier, an uplink timing advance of a second carrier and a downlink timing advance of the second carrier;

the processor is configured to: and sending a timing advance message to the network equipment, wherein the timing advance message comprises the plurality of timing advances.

In a sixth aspect, there is provided a network device comprising: a transceiver; wherein,

The transceiver is configured to: and receiving a timing advance message sent by the terminal equipment, wherein the timing advance message comprises a plurality of timing advances, and the plurality of timing advances comprise an uplink timing advance of a first carrier, an uplink timing advance of a second carrier and a downlink timing advance of the second carrier.

A seventh aspect provides a terminal device for performing the method of the first aspect or its implementation forms.

Specifically, the communication device comprises functional modules for performing the method in the first aspect described above.

In an eighth aspect, a network device is provided for performing the method of the second aspect or implementations thereof.

Specifically, the communication device comprises functional modules for performing the method in the second aspect described above.

In a ninth aspect, a terminal device is provided, comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a tenth aspect, a network device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

An eleventh aspect provides a chip for implementing the method in any one of the first to second aspects or each implementation thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In a twelfth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

By the technical scheme, the terminal equipment reports the uplink timing advance and the downlink timing advance of different carriers to the network equipment, so that the network equipment can more accurately acquire the uplink timing advance and the downlink timing advance of the terminal equipment on different carriers, and reliable guarantee is provided for communication between subsequent terminal equipment and the network equipment.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

fig. 2 is a schematic flow chart of a wireless communication method provided according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a relative time relationship between an uplink timing advance and a downlink timing advance of different carriers according to an embodiment of the present application;

Fig. 4 is a schematic flow chart of a wireless communication method provided according to an embodiment of the present application;

fig. 5 is a schematic diagram of a relative time relationship between uplink signal scheduling of a network device according to an embodiment of the present application;

Fig. 6 is a schematic flow chart diagram of a wireless communication method provided according to an embodiment of the present application;

fig. 7 is a schematic diagram of a relative time relationship between a network device scheduling a downlink signal according to an embodiment of the present application;

fig. 8 is a schematic diagram of a relative time relationship between a network device scheduling uplink signal and downlink signal according to an embodiment of the present application;

Fig. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication system provided in accordance with an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art to which the application pertains without inventive faculty, are intended to fall within the scope of the application.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (GlobalSystem of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio Service (GENERAL PACKET Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new air interface (new Radio, NR) system, evolution system of NR system, LTE-based access to unlicensedspectrum, LTE-U) system on unlicensed spectrum, NR-based access to unlicensed spectrum, NR-U system on unlicensed spectrum, non-terrestrial communication network (Non-TERRESTRIAL NETWORKS, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless Local area network (Wireless Local AreaNetworks, WLAN), wireless fidelity (WIRELESS FIDELITY, WIFI), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-Machine (Machine to Machine, M2M) communication, machine type communication (Machine TypeCommunication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle toeverything, V2X) communication, etc., to which the embodiments of the present application can also be applied.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or an independent (Standalone, SA) networking scenario.

Optionally, the communication system in the embodiment of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; or the communication system in the embodiment of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Embodiments of the present application are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User Equipment, or the like.

The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (PublicLand Mobile Network, PLMN) network, etc.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned (SELF DRIVING), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (SMART GRID), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smartcity), or a wireless terminal device in smart home (smart home), or the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device (gNB) in an NR network, a network device in a PLMN network for future evolution, or a network device in an NTN network, etc.

By way of example, and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth Orbit (medium earth Orbit, MEO) satellite, a geosynchronous Orbit (geostationary earth Orbit, GEO) satellite, a high elliptical Orbit (HIGH ELLIPTICAL Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In the embodiment of the present application, a network device may provide services for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (SMALL CELL), where the small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

An exemplary communication system 100 to which embodiments of the present application may be applied is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and the communication system 100 may alternatively include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, as embodiments of the application are not limited in this regard.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined may refer to what is defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in the present application.

In order to facilitate understanding of the technical solution of the embodiments of the present application, the technical solution of the present application is described in detail below through specific embodiments. The following related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

In order to facilitate a better understanding of the embodiments of the present application, the problems addressed by the present application will be described.

In the uplink direction of the wireless communication system, the initial sending time of an uplink frame of a general terminal device is earlier than the initial receiving time of a downlink frame corresponding to the same frame number, and the time difference between the uplink time and the downlink time is the Timing Advance (TA).

Typically, the terminal device determines the TA at initial access based on the common configuration parameters of the current cell and the timing adjustment amount the network device allocates to the terminal device in the random access response. In the random access process, the terminal device and the network device acquire uplink synchronization, but the time for the uplink signal to reach the network device is affected by various factors and may change with time.

The network device determines the TA of each UE by measuring the uplink transmission signal of the UE. According to the definition of the 3GPP related standards, the network device controls the terminal device to adjust the TA by timing Advance Command MAC CE (TIMING ADVANCE Command MAC CE) or Absolute timing Advance Command MAC CE (Absolute TIMING ADVANCE Command MAC CE).

In the downlink direction of the wireless communication system, the relative position of the downlink frame determined by the receiving end of the terminal equipment also changes with time under the influence of factors such as the movement of the terminal equipment, the difference between the timing clocks of the network equipment and the terminal equipment, and the like. In general, the terminal device also adjusts the timing advance of the uplink transmission signal according to the timing change of the downlink signal obtained by its own measurement.

Further, in a carrier aggregation scenario, the downlink signals of different carriers are not strictly time aligned. Even in the downlink direction of different cells in the same timing advance cell Group (TIMING ADVANCE Group, TAG), there may be timing differences.

In summary, in the carrier aggregation scenario, there is not strict time synchronization between downlink signals of different carriers, and between uplink signals of different carriers. Moreover, the actual TA of the uplink signal of the different carriers also varies over time. In general, the network device does not know the precise timing differences of these uplink and downlink signals, and in some communication services that are time sensitive, the relevant schedule cannot be optimized.

Based on the above problems, the present application provides a wireless communication method, in which the terminal device reports the uplink timing advance and the downlink timing advance of different carriers to the network device, so that the network device can more accurately acquire the uplink timing advance and the downlink timing advance of the terminal device on different carriers, and reliable guarantee is provided for the communication between the subsequent terminal device and the network device.

The technical scheme of the application is described in detail below through specific embodiments.

Fig. 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the application, as shown in fig. 2, the method 200 may include, but is not limited to, the following:

S210, a terminal device determines a plurality of timing advance, wherein the plurality of timing advance comprises an uplink timing advance of a first carrier, an uplink timing advance of a second carrier and a downlink timing advance of the second carrier;

s220, the terminal equipment sends a timing advance message to the network equipment, wherein the timing advance message comprises the plurality of timing advances;

s230, the network device receives the timing advance message.

It should be understood that fig. 2 illustrates steps or operations of the method 200 of wireless communication, but these steps or operations are merely examples, and that embodiments of the present application may perform other operations or variations of the operations in fig. 2.

It should be understood that the first carrier and the second carrier do not have any limitation on the number of carriers. For example, the first carrier is a reference carrier for timing advance of other carriers, and the second carrier is other carriers than the first carrier. As another example, the first carrier and the second carrier may include a plurality of carriers, with one of the plurality of carriers in the first carrier being a reference carrier for timing advance of other carriers.

It should also be appreciated that the plurality of timing advances may also include an uplink timing advance for the third carrier and a downlink timing advance for the third carrier.

It should also be appreciated that the first carrier may or may not be spaced the same as the second carrier.

In some embodiments, the uplink timing advance of the first carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point; the downlink timing advance of the second carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point; the uplink timing advance of the second carrier takes the initial sending time of the uplink signal of the same time period of the first carrier as a reference point; or the uplink timing advance of the second carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point.

Specifically, when the terminal device reports and sends the timing advance message, a reference carrier is selected, and the initial receiving time of the downlink signal of the reference carrier is taken as a reference point to determine the uplink timing advance or the downlink timing advance of other carriers. The terminal equipment and the network equipment can adopt a protocol appointed mode, the initial receiving time of the downlink signal of the same time period of the first carrier is selected as a reference point, and the uplink timing advance of the first carrier is reported according to the reference point, and the downlink timing advance of the second carrier and the uplink timing advance of the second carrier; or the terminal device and the network device may adopt a protocol agreed manner, select an initial receiving time of the downlink signal of the first carrier in the same period as a reference point, report the uplink timing advance of the first carrier according to the reference point, and select an initial sending time of the uplink signal of the second carrier in the same period as the reference point, and report the uplink timing advance of the second carrier.

For example, fig. 3 is a schematic diagram of a relative time relationship between an uplink timing advance and a downlink timing advance of different carriers according to an embodiment of the present application. As shown in fig. 3, firstly, selecting the starting position of the downlink Slot N of the carrier 0 as a reference point, namely a reference timing 0 point, taking the starting position of the downlink Slot N of the carrier 0 as the reference point, and taking the starting positions of the downlink slots N of all other carriers except the carrier 0 as the reference point; the TA of the uplink Slot N of all other carriers except the carrier 0 takes the initial boundary of the uplink Slot N of the carrier 0 as a reference point. The timing advance message sent by the terminal device to the network device includes the following information:

TA_CC0,UL，

TA_CC1,UL,TA_CC1,DL，

TA_CC2,UL,TA_CC2,DL，

……

TA_CCX,UL,TA_CCX,DL，

For ease of illustration, the uplink subcarrier spacing and the downlink subcarrier spacing for all carriers shown in fig. 3 are the same, and this limitation is merely exemplary. The subcarrier spacing of different carriers may be different, and the uplink subcarrier spacing and the downlink subcarrier spacing of the same carrier may be different. The subcarrier spacing (Sub-CARRIER SPACING, SCS) is the same, i.e. all uplink and downlink Slot lengths of the corresponding two carriers are the same.

It should be appreciated that the definition of the same period may be determined based on the subcarrier spacing, as the subcarrier spacing may be the same or different. For example, when the subcarrier spacing is the same, the same time period may be the same slot; for another example, when the subcarrier spacing is not the same, the same period may be the same subframe.

In some embodiments, positive values are taken earlier than the timing advance of the reference point and negative values are taken later than the timing advance of the reference point.

Specifically, as shown in fig. 3, the initial position of the downlink Slot N of the carrier 0 is selected as the reference point of the uplink Slot N of the carrier 0 and the downlink slots N of the rest carriers, the TA of the uplink Slot N of the carrier 0 takes a positive value, the TA of the downlink Slot N of the carrier 1 takes a positive value, and the TA of the downlink Slot N of the carrier X takes a negative value; and selecting the initial position of the uplink Slot N of the carrier 0 as the reference point of the uplink Slot N of the rest carriers, wherein the TA of the uplink Slot N of the carrier 1 takes a positive value and the TA of the uplink Slot N of the carrier X takes a negative value.

In some embodiments, the method further comprises:

The network equipment sends first scheduling information to the terminal equipment, wherein the first scheduling information is used for indicating the terminal equipment to report the timing advance information;

The terminal equipment receives a first scheduling message sent by the network equipment;

and the terminal equipment sends the timing advance message to network equipment according to the first scheduling message.

In some embodiments, the terminal device sending the timing advance message to a network device includes:

and the terminal equipment periodically sends the timing advance message to the network equipment.

It will be appreciated that the period over which the terminal device sends the timing advance message to the network device may be preset by a protocol from time to time, or the period may be configured by the network device from time to time.

In some embodiments, if the network device configures only a plurality of downlink carriers, and does not configure an uplink carrier, the terminal device only needs to send timing advance of the plurality of downlink carriers to the network device.

In some embodiments, the first scheduling message includes first indication information, where the first indication information is used to indicate an uplink timing advance and/or a downlink timing advance of at least one carrier reported by the terminal device.

Specifically, the network device indicates the timing advance of the carrier that the terminal device needs to report. As shown in table 1, the network device may indicate the timing advance of the carrier that the terminal device needs to report through the following fields, where each cell is one bit.

Table 1 first indication information example

μ5

μ4

μ3

μ2

μ1

R

In some embodiments, the timing advance message includes second indication information, where the second indication information is used to indicate an uplink timing advance and/or a downlink timing advance of at least one carrier reported by the terminal device.

In particular, the terminal device may also indicate which carriers to send to the network device the timing advance. The uplink timing advance and/or the downlink timing advance of the at least one reported carrier is indicated by the indication information shown in table 1.

By the method, based on the fact that the terminal equipment sends the timing advance information to the network equipment, the network equipment can acquire more accurate timing time difference of uplink and downlink signals, and the related scheduling is convenient to optimize in some time-sensitive communication services. In the following, it is specifically described how the network device performs service scheduling on the terminal device in the uplink and downlink directions based on the terminal device sending the timing advance message to the network device in the super uplink scenario.

In the fifth generation wireless communication system, super uplink is an important characteristic, and can improve throughput of uplink data transmission in a scenario of multiple carriers.

In the super uplink scenario, two carriers at the terminal device side at least share one path of transmitting channel, and the implementation of the super uplink characteristic requires frequent switching of the antenna transmitting channel. When the working mode is switched, the shared transmission channel needs to be switched from one carrier to another carrier. In order not to affect the normal operation of the whole communication module, the 3GPP standard defines a switching interval (SWITCHING PERIOD) for implementing the switching of the transmission channel.

In the super uplink scenario, the signals in the uplink direction of the two uplink carriers may be aligned in timing, i.e. the boundaries of the same period are aligned, or may be misaligned, i.e. the boundaries of the same period are not aligned. When the timing time of the uplink signals of the two carriers is aligned, the network device can schedule the terminal device according to the same timing relationship, so as to avoid the switching interval in the super uplink. When the two uplink carriers are not strictly aligned, according to the existing 3GPP standard, the network device cannot completely avoid the switching interval when scheduling the uplink service. Then, under this condition, normal data transmission is not possible with the orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol of the uplink carrier overlapping with the switching interval time. If the network device schedules uplink signal transmission in the uplink OFDM symbols overlapped with the switching interval time, the terminal device needs to discard part of the transmission of the uplink signal by itself, so as to leave the switching interval time and realize the switching of the transmitting channel.

In the super uplink scenario, for the 3GPP standard, some Band Combination (Band Combination) needs to break the downlink signal in the switching interval time period, as described above, under the condition that the timing information of the terminal device is not reported, the network device generally cannot know the accurate relative time position relationship of each carrier downlink of the terminal device, that is, for the scheduled downlink signal, the downlink OFDM symbol overlapping the switching interval in the super uplink scenario cannot be completely avoided. Similarly, if the network device transmits downlink signals in the downlink OFDM symbols overlapped with the switching interval time, the terminal device needs to discard part of the downlink signals by itself, so as to vacate the switching interval time and realize the switching of the transmitting channels.

In the switching interval, the OFDM symbols of the uplink carrier and part of the downlink carrier which are overlapped with the switching interval in time cannot perform normal data transmission and reception. If the network device schedules uplink or downlink signal transmission in the uplink and downlink OFDM symbols overlapped with the switching interval time, the terminal device side must discard the OFDM symbols to ensure that the antenna can be switched normally. Thus, the uplink and downlink communication performance must be affected to some extent. And the terminal equipment side realizes the process of rejecting the ODFM symbols, which needs a certain software and hardware system support and has a certain realization complexity.

Therefore, the embodiment of the application provides a network communication method, and network equipment schedules the transmission of uplink and downlink signals according to the timing advance message in the super uplink scene, so that the uplink signals and the downlink signals are not overlapped with the switching interval, and further the communication quality is improved.

The following details, by a specific embodiment, of uplink signal scheduling manners based on the timing information in the super uplink scenario.

In some embodiments, as shown in fig. 4, fig. 4 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the application, the method 200 may further include, but is not limited to, the following:

S241, when the network device determines that the transmitting antenna of the terminal device is switched from the second carrier to the first carrier, the network device determines a first Orthogonal Frequency Division Multiplexing (OFDM) symbol for the terminal device to send an uplink signal through the first carrier and a second Orthogonal Frequency Division Multiplexing (OFDM) symbol for the terminal device to send an uplink signal through the second carrier according to the timing advance message and the time period for the terminal device to switch the transmitting antenna, wherein the time period of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol is not overlapped with the time period for the terminal device to switch the transmitting antenna, and the time period of the second Orthogonal Frequency Division Multiplexing (OFDM) symbol is not overlapped with the time period for the terminal device to switch the transmitting antenna;

S251, the network device sends second scheduling information to the terminal device, where the second scheduling information includes third indication information and fourth indication information, the third indication information is used to indicate the first OFDM symbol, and the fourth indication information is used to indicate the second OFDM symbol.

Correspondingly, the terminal equipment receives the second scheduling information.

In some embodiments, the step S241 includes:

The network equipment determines a switching starting time and a switching ending time corresponding to the uplink direction of the first carrier according to the time period of switching the transmitting antenna of the terminal equipment, wherein the time period between the switching starting time and the switching ending time corresponding to the uplink direction of the first carrier does not comprise the first Orthogonal Frequency Division Multiplexing (OFDM) symbol;

And determining the switching starting time and the switching ending time corresponding to the uplink direction of the second carrier according to the uplink timing advance of the second carrier and the switching starting time and the switching ending time corresponding to the uplink direction of the first carrier, wherein the period between the switching starting time and the switching ending time corresponding to the uplink direction of the second carrier does not comprise the second OFDM symbol, and the uplink timing advance of the second carrier takes the starting sending time of the uplink signal of the same period of the first carrier as a reference point.

Specifically, as shown in fig. 5, the uplink timings of carrier 2 and carrier 1 are not completely synchronized, and it is assumed that the uplink time of carrier 1 is slightly later than the uplink time of carrier 2. When the network device determines to switch the transmitting antenna of the terminal device from the carrier 2 to the carrier 1, the basic process of the uplink service scheduling mode of the network device is as follows:

(1) The network device determines the period of switching the transmitting antenna in the uplink direction of the carrier 1, i.e. determines the starting time and the ending time of the switching interval. As shown in fig. 5, it is assumed that the switching interval is located in front of the carrier 1 uplink Slot N, as shown by the hatching in fig. 5, and the switching interval end time is aligned with the start position of the carrier 1 uplink Slot N. This assumption is merely exemplary and does not set forth any limitation on the present application, and the switching interval may be located at any other legal location.

(2) The network device determines the relative time relation between the carrier 2 and the uplink signal of the carrier 1 according to the uplink timing advance of the carrier 2, and herein, it is assumed that the uplink timing advance of the carrier 2 uses the initial transmission time of the uplink signal of the same period of the carrier 1 as a reference point, so that the relative time relation between the carrier 2 and the uplink signal of the carrier 1 can be determined only according to the uplink timing advance of the carrier 2.

(3) The network device determines the starting time and the ending time of the switching interval on the carrier 2 according to the relative time relation of the uplink signals of the carrier 2 and the carrier 1 and the determined starting time and the determined ending time of the switching interval.

And the network equipment determines all OFDM symbols overlapped with the switching interval in the uplink direction of all the carriers 1 according to the starting time and the ending time of the switching interval on the carriers 1, wherein all the OFDM symbols comprise all the overlapped and partially overlapped OFDM symbols.

And the network equipment determines all OFDM symbols overlapped with the switching interval in the uplink direction of all the carriers 2 according to the starting time and the ending time of the switching interval on the carriers 2, wherein all the OFDM symbols comprise all the overlapped and partially overlapped OFDM symbols.

In the example shown in fig. 5, all OFDM symbols overlapping the switching interval in the uplink direction of carrier 1 are shaded portions before Slot N, and all OFDM symbols overlapping the switching interval in the uplink direction of carrier 2 include a partial symbol of Slot N-1 and a partial symbol of Slot N.

(4) And (3) when the network equipment schedules the carrier 2 and the carrier 1 to send uplink signals, avoiding all OFDM symbols which are completely overlapped or partially overlapped with the switching interval time in the uplink direction of the carrier 2 and the carrier 1 determined in the step (3). That is, when the network device schedules signals such as all PUSCH, PUCCH, SRS, PRACH of the uplink directions of the carrier 2 and the carrier 1 for the terminal device, all OFDM symbols overlapping the switching interval shown in fig. 5 are not called.

In some embodiments, the determining, according to the uplink timing advance of the second carrier and the handover start time and the handover end time corresponding to the uplink direction of the first carrier, the handover start time and the handover end time corresponding to the uplink direction of the second carrier includes:

And determining the switching starting time and the switching ending time corresponding to the uplink direction of the second carrier according to the uplink timing advance of the second carrier, the uplink timing advance of the first carrier and the switching starting time and the switching ending time corresponding to the uplink direction of the first carrier, wherein the uplink timing advance of the second carrier does not take the starting sending time of the uplink signal of the same time period of the first carrier as a reference point.

Specifically, for example, the uplink directions of the carrier 1 and the carrier 2 take the initial sending time of the uplink signal of the simultaneous period of the carrier 0 as a reference point, the network device determines to switch the uplink direction of the carrier 1 to the uplink direction of the carrier 2, and the network device may determine the initial time and the end time of the switching interval on the carrier 1; and then the network equipment determines the uplink relative time relation between the carrier 1 and the carrier 2 according to the uplink timing advance of the carrier 1 and the uplink timing advance of the carrier 2, and determines the starting time and the ending time of the switching interval on the carrier 2 according to the determined uplink relative time relation between the carrier 1 and the carrier 2 and the starting time and the ending time of the switching interval determined on the carrier 1.

It should be appreciated that the above embodiments describe how the network device performs scheduling of uplink signals when switching a transmit antenna from the second carrier to the first carrier. The method is equally applicable when switching a transmitting antenna from the first carrier to the second carrier.

The following details, by a specific embodiment, a downlink signal scheduling manner based on the timing information in the super uplink scenario.

In some embodiments, as shown in fig. 6, fig. 6 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the application, the method 200 may further include, but is not limited to, the following:

s242, when the network device determines that the transmitting antenna of the terminal device is switched from the second carrier to the first carrier, the downlink direction of the second carrier needs to be interrupted to send a downlink signal in a period when the terminal device switches the transmitting antenna, and the network device determines a switching start time and a switching end time corresponding to the uplink direction of the first carrier according to the period when the terminal device switches the transmitting antenna;

S252, the network device determines the switching start time and the switching end time corresponding to the downlink direction of the second carrier according to the uplink timing advance of the first carrier, the downlink timing advance of the second carrier and the determined switching start time and the determined switching end time corresponding to the uplink direction of the first carrier, wherein the time period between the switching start time and the switching end time corresponding to the downlink direction of the second carrier comprises a third OFDM symbol,

The uplink timing advance of the first carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point, and the downlink timing advance of the second carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point;

And S262, the network equipment does not send downlink information to the terminal equipment on a third Orthogonal Frequency Division Multiplexing (OFDM) symbol corresponding to the downlink direction of the second carrier.

Specifically, as shown in fig. 7, the uplink timings of carrier 2 and carrier 1 are not completely synchronized, and it is assumed that the uplink time of carrier 1 is slightly later than the uplink time of carrier 0. When the network device determines that the transmitting antenna of the terminal device is switched from the carrier 2 to the carrier 1, the downlink direction of the carrier 2 needs to be interrupted in a switching interval time period in a super uplink scene, and the basic process of the downlink service scheduling mode of the network device is as follows:

(1) The network device determines a period of time for the terminal device to switch the transmitting antenna, i.e. determines a start time and an end time of a switching interval. As shown in fig. 7, it is assumed that the switching interval is located in front of the carrier 1 uplink Slot N, as shown by the hatching in fig. 7, and the switching interval end time is aligned with the start position of the carrier 1 uplink Slot N. This assumption is merely exemplary and does not set forth any limitation on the present application, and the switching interval may be located at any other legal location.

(2) Here, it is assumed that the uplink timing advance of the carrier 1 uses the initial receiving time of the downlink signal of the carrier 1 in the same period as a reference point, the downlink timing advance of the carrier 2 uses the initial receiving time of the downlink signal of the carrier 1 in the same period as a reference point, and the network device determines the switching start time and the switching end time corresponding to the downlink direction of the carrier 2 according to the uplink timing advance of the carrier 1, the downlink timing advance of the carrier 2, and the determined switching start time and the determined switching end time corresponding to the uplink direction of the carrier 1.

(3) And the network equipment determines all OFDM symbols overlapped with the switching interval in the downlink direction of the carrier 2 according to the determined switching starting time and the determined switching ending time corresponding to the downlink direction of the carrier 2, wherein all the OFDM symbols comprise all the overlapped OFDM symbols and part of the overlapped OFDM symbols. In the example shown in fig. 7, these OFDM symbols are all or partially overlapped, i.e., all or partially overlapped with the hatched portion in fig. 7. In fig. 7, the switching interval spans the downlink directions Slot N-1 and Slot N of the carrier 2, and then the downlink direction Slot N-1 of the carrier 2 overlaps with the OFDM symbol of the switching interval and the OFDM symbol of the Slot N overlaps with the switching interval.

(4) When the network equipment schedules the signal transmission of the downlink direction of the carrier 0 and the downlink direction of the carrier 1, the OFDM symbols which are all overlapped or partially overlapped with the switching interval time in the downlink direction of the carrier 2 obtained in the step (3) are avoided. I.e. the network device schedules any downlink signals such as all PDCCH, PDSCH, CSI-RS in the downlink direction of carrier 2 for the terminal device, which do not overlap with the switching interval shown in fig. 7.

In some embodiments, when the network device determines that the transmitting antenna of the terminal device is switched from the second carrier to the first carrier, the downlink direction of the first carrier needs to be interrupted to send a downlink signal in a period when the terminal device switches the transmitting antenna, and the network device determines a switching start time and a switching end time corresponding to the uplink direction of the first carrier according to the period when the terminal device switches the transmitting antenna;

The network device determines a switching start time and a switching end time corresponding to a first carrier downlink direction according to an uplink timing advance of the first carrier and the determined switching start time and the determined switching end time corresponding to the first carrier uplink direction, wherein a period between the switching start time and the switching end time corresponding to the first carrier downlink direction comprises a fourth Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the uplink timing advance of the first carrier takes a start receiving time of a downlink signal of a simultaneous section of the first carrier as a reference point;

And the network equipment does not send downlink information to the terminal equipment on the fourth Orthogonal Frequency Division Multiplexing (OFDM) symbol corresponding to the downlink direction of the first carrier.

It should be appreciated that the above embodiments describe how the network device performs scheduling of downlink signals when switching a transmit antenna from the second carrier to the first carrier. The method is equally applicable when switching a transmitting antenna from the first carrier to the second carrier.

For a clearer understanding of an example of the present application, how a network device schedules uplink and downlink signals in a super uplink scenario is described in further detail below with reference to fig. 8.

As shown in fig. 8, fig. 8 shows the time relationship between the uplink and downlink directions of carrier 0 and the uplink and downlink directions of carrier 1, and the following assumption is made here:

(1) The uplink SCS and the downlink SCS of the carrier 0 are both 15kHz, namely, the length of a corresponding Slot is 1 millisecond;

(2) The uplink SCS and the downlink SCS of the carrier 1 are both 30kHz, namely, the length of a corresponding Slot is 0.5 millisecond;

(3) The upstream TA of carrier 0 is slightly earlier than the upstream TA of carrier 1;

(4) The 12 th and 13 th symbols of Slot N-1 with switching interval of carrier 0, the switching interval length is 140 microseconds;

(5) The downlink of the carrier 1 needs to be interrupted in the switching interval time period;

(6) The network device has received the timing advance message sent by the terminal device.

Then, when the network device determines to switch the transmitting antenna of the terminal device from the carrier 1 to the carrier 0, the network device needs to perform the following operations:

(1) The network device determines the start and end positions of the handover interval. As shown in fig. 8. In this embodiment, it is assumed that the switching interval is located before the uplink Slot N of the carrier 0, and the ending time of the switching interval is aligned with the starting position of the uplink Slot N of the carrier 0. This assumption is merely exemplary and the schemes described herein are applicable to scenarios where the switching interval is located at any other legal location.

(2) The network equipment determines the relative time relation between the uplink signals of the carrier 0 and the carrier 1 according to the time information of the uplink signals and the downlink signals of all relevant carriers reported by the terminal.

(3) The network device determines all OFDM symbols overlapped with the switching interval in the uplink direction of all carriers according to the relative time relation of the uplink signals of the carrier 0 and the carrier 1 and the time position of the switching interval, wherein the OFDM symbols comprise all overlapped and partially overlapped OFDM symbols. In the example shown in FIG. 8, OFDM symbol 12/13 of Slot N-1 in the uplink direction of carrier 0 and OFDM symbols 10/11/12/13 and OFDM symbol 0 of Slot 2N-1 in the uplink direction of carrier 1 overlap with the switching interval.

(4) When the network equipment schedules the uplink signal of the carrier 0 to be sent, the OFDM symbol 12/13 of the Slot N-1 is avoided; when the network device schedules the uplink signal of the carrier 1 to transmit, the OFDM symbol 10/11/12/13 of the Slot 2N-2 and the OFDM symbol 0 of the Slot 2N-1 are avoided.

(5) According to the relative time relation between the carrier 0 and the carrier 1 and the time position of the switching interval, the network equipment determines all OFDM symbols overlapped with the switching interval in the downlink direction of all the carrier 1, including all overlapped and partially overlapped OFDM symbols. In the example shown in fig. 8, the OFDM symbol 9/10/11/12/13 of Slot 2N-2 in the downlink direction of carrier 1 overlaps with the switching interval.

(6) When the network device schedules the downlink signal of the carrier 1 to be sent, the OFDM symbol 9/10/11/12/13 of the Slot 2N-2 is avoided.

The method embodiment of the present application is described in detail above with reference to fig. 2 and 8, and the apparatus embodiment of the present application is described in detail below with reference to fig. 9 to 13, it being understood that the apparatus embodiment and the method embodiment correspond to each other, and similar descriptions can be made with reference to the method embodiment.

Fig. 9 shows a schematic block diagram of a terminal device 300 according to an embodiment of the application. As shown in fig. 9, the terminal device 300 includes: a processing unit 310 and a communication unit 320; wherein,

The processing unit 310 is configured to determine a plurality of timing advances, where the plurality of timing advances include an uplink timing advance of a first carrier, an uplink timing advance of a second carrier, and a downlink timing advance of the second carrier;

the communication unit 320 is configured to send a timing advance message to a network device, where the timing advance message includes the plurality of timing advances.

In some embodiments, the communication unit 320 is specifically configured to:

receiving a first scheduling message sent by network equipment, wherein the first scheduling message is used for indicating the terminal equipment to report the timing advance information;

and sending the timing advance message to network equipment according to the first scheduling message.

In some embodiments, the communication unit 320 is specifically configured to:

And periodically sending the timing advance message to the network equipment.

In some embodiments, the communication unit 320 is further configured to:

Receiving second scheduling information sent by the network equipment, wherein the second scheduling information comprises third indication information and fourth indication information,

The third indication information is used for indicating the terminal equipment to send a first Orthogonal Frequency Division Multiplexing (OFDM) symbol of an uplink signal to the network equipment through the first carrier, the time period of the first OFDM symbol is not overlapped with the time period of the terminal equipment for switching the transmitting antenna,

The fourth indication information is used for indicating a second Orthogonal Frequency Division Multiplexing (OFDM) symbol of the terminal equipment to send an uplink signal to the network equipment through the second carrier, and a period of the second OFDM symbol is not overlapped with a period of the terminal equipment for switching the transmitting antenna;

Transmitting an uplink signal to a network device through a first Orthogonal Frequency Division Multiplexing (OFDM) symbol of the first carrier;

and sending an uplink signal to the network equipment through a second Orthogonal Frequency Division Multiplexing (OFDM) symbol of the second carrier.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200, which is not described herein for brevity.

Fig. 10 shows a schematic block diagram of a terminal device 400 according to an embodiment of the application. As shown in fig. 10, the network device 400 includes: a communication unit 410; wherein,

The communication unit 410 is configured to receive a timing advance message sent by a terminal device, where the timing advance message includes a plurality of timing advances, and the plurality of timing advances includes an uplink timing advance of a first carrier, an uplink timing advance of a second carrier, and a downlink timing advance of the second carrier.

In some embodiments, the communication unit 410 is further configured to:

And sending a first scheduling message to the terminal equipment, wherein the first scheduling message is used for indicating the terminal equipment to report the timing advance information.

In some embodiments, when the network device 400 further comprises: a processing unit 420; wherein, when the processing unit 420 determines to switch the transmitting antenna of the terminal device from the second carrier to the first carrier, the processing unit 420 is further configured to:

Determining a first Orthogonal Frequency Division Multiplexing (OFDM) symbol for the terminal device to send uplink signals through the first carrier and a second Orthogonal Frequency Division Multiplexing (OFDM) symbol for the terminal device to send uplink signals through the second carrier according to the timing advance message and the time period for the terminal device to switch the transmitting antenna, wherein the time period of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol is not overlapped with the time period for the terminal device to switch the transmitting antenna, and the time period of the second Orthogonal Frequency Division Multiplexing (OFDM) symbol is not overlapped with the time period for the terminal device to switch the transmitting antenna;

The communication unit 410 sends second scheduling information to the terminal device, where the second scheduling information includes third indication information and fourth indication information, the third indication information is used to indicate the first OFDM symbol, and the fourth indication information is used to indicate the second OFDM symbol.

In some embodiments, the processing unit 420 is specifically configured to:

Determining a switching starting time and a switching ending time corresponding to the uplink direction of the first carrier according to the time period of the terminal equipment switching transmitting antenna, wherein the time period between the switching starting time and the switching ending time corresponding to the uplink direction of the first carrier does not comprise the first orthogonal frequency division multiplexing OFDM symbol;

And determining the switching starting time and the switching ending time corresponding to the uplink direction of the second carrier according to the uplink timing advance of the second carrier and the switching starting time and the switching ending time corresponding to the uplink direction of the first carrier, wherein the period between the switching starting time and the switching ending time corresponding to the uplink direction of the second carrier does not comprise the second OFDM symbol.

In some embodiments, when the processing unit 420 determines that the transmitting antenna of the terminal device is switched from the second carrier to the first carrier, the downlink direction of the first carrier needs to be interrupted for transmitting the downlink signal during a period when the terminal device switches the transmitting antenna, the processing unit 420 is further configured to:

Determining a switching start time and a switching end time corresponding to the first carrier downlink direction according to a time period of switching the transmitting antenna by the terminal equipment, wherein the time period between the switching start time and the switching end time corresponding to the first carrier downlink direction comprises a third Orthogonal Frequency Division Multiplexing (OFDM) symbol,

The communication unit 410 does not send downlink information to the terminal device on the third OFDM symbol corresponding to the downlink direction of the first carrier.

In some embodiments, when the processing unit 420 determines that the transmitting antenna of the terminal device is switched from the second carrier to the first carrier, the downlink direction of the second carrier needs to be interrupted for transmitting the downlink signal during a period when the terminal device switches the transmitting antenna, the processing unit 420 is further configured to:

Determining a switching starting time and a switching ending time corresponding to the first carrier downlink direction according to the time period of the terminal equipment switching transmitting antenna, wherein the time period between the switching starting time and the switching ending time corresponding to the first carrier downlink direction comprises the third Orthogonal Frequency Division Multiplexing (OFDM) symbol;

Determining the switching start time and the switching end time corresponding to the second carrier downlink direction according to the downlink timing advance of the second carrier and the determined switching start time and the determined switching end time corresponding to the first carrier downlink direction, wherein the time interval between the switching start time and the switching end time corresponding to the second carrier downlink direction comprises a fourth Orthogonal Frequency Division Multiplexing (OFDM) symbol,

The communication unit 410 does not send downlink information to the terminal device on the fourth OFDM symbol corresponding to the downlink direction of the second carrier.

It should be understood that the network device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 400 are respectively for implementing the corresponding flow of the network device in the method 200, which are not described herein for brevity.

Fig. 11 is a schematic block diagram of a communication device 500 according to an embodiment of the present application. The communication device 500 shown in fig. 11 comprises a processor 510, from which the processor 510 may call and run a computer program to implement the method in an embodiment of the application.

In some embodiments, as shown in fig. 10, the communication device 500 may also include a memory 520. Wherein the processor 510 may call and run a computer program from the memory 520 to implement the method in an embodiment of the application.

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

In some embodiments, as shown in fig. 10, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, and in particular, may transmit information or data to other devices, or receive information or data transmitted by other devices.

Wherein the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, the number of which may be one or more.

In some embodiments, the communication device 500 may be a network device in the embodiments of the present application, and the communication device 500 may implement corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the communication device 500 may be a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 500 may implement corresponding processes implemented by the mobile terminal/terminal device in each method according to the embodiment of the present application, which are not described herein for brevity.

Optionally, the communication device 500 may be applied to a network device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 12 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 600 shown in fig. 12 includes a processor 610, and the processor 610 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 12, the apparatus 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the method in an embodiment of the application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, the apparatus 600 may further comprise an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and in particular, may acquire information or data sent by the other devices or chips.

Optionally, the apparatus 600 may further comprise an output interface 640. Wherein the processor 610 may control the output interface 640 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the apparatus may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a network device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device according to the embodiment of the present application may be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 13 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in fig. 13, the communication system 700 includes a terminal device 710 and a network device 720.

The terminal device 710 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital signal processor (Digital SignalProcessor, DSP), an Application SPECIFIC INTEGRATED Circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable GATE ARRAY, FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a Read-only memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDR SDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and Direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be appreciated that the above memory is exemplary and not limiting, and for example, the memory in the embodiments of the present application may be static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous connection dynamic random access memory (SYNCH LINKDRAM, SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps 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 solution. 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 application.

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

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising:

2. The method of claim 1, wherein the uplink timing advance of the first carrier is referenced to a start reception time of a downlink signal of a simultaneous segment of the first carrier;

The downlink timing advance of the second carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point;

The uplink timing advance of the second carrier takes the initial sending time of the uplink signal of the same time period of the first carrier as a reference point; or the uplink timing advance of the second carrier takes the initial receiving time of the downlink signal of the same time period of the first carrier as a reference point.

3. The method of claim 2, wherein the sending the timing advance message to a network device comprises:

receiving a first scheduling message sent by network equipment, wherein the first scheduling message is used for indicating terminal equipment to report the timing advance information;

4. The method of claim 2, wherein the sending the timing advance message to a network device comprises:

And periodically sending the timing advance message to the network equipment.

5. A method according to claim 3, wherein the first scheduling message includes first indication information, the first indication information being used to indicate an uplink timing advance and/or a downlink timing advance of at least one carrier reported by the terminal device.

6. The method according to claim 3 or 4, wherein the timing advance message comprises second indication information, the second indication information being used for indicating an uplink timing advance and/or a downlink timing advance of at least one carrier reported by the terminal device.

7. The method according to any one of claims 1 to 6, further comprising:

The third indication information is used for indicating the terminal equipment to send a first Orthogonal Frequency Division Multiplexing (OFDM) symbol of an uplink signal to the network equipment through the first carrier, the time period of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol is not overlapped with the time period of the terminal equipment for switching the transmitting antenna,

The fourth indication information is used for indicating a terminal device to send a second Orthogonal Frequency Division Multiplexing (OFDM) symbol of an uplink signal to a network device through the second carrier, and a period of the second OFDM symbol is not overlapped with a period of the terminal device for switching a transmitting antenna;

8. A method of wireless communication, comprising:

9. The method of claim 8, wherein the uplink timing advance of the first carrier is referenced to a start reception time of a downlink signal of a simultaneous segment of the first carrier;

10. The method according to claim 9, wherein the method further comprises:

11. The method according to claim 10, wherein the first scheduling message includes first indication information, where the first indication information is used to indicate an uplink timing advance and/or a downlink timing advance of at least one carrier reported by the terminal device.

12. The method according to claim 9, wherein the timing advance message comprises second indication information, the second indication information being used for indicating an uplink timing advance and/or a downlink timing advance of at least one carrier reported by the terminal device.

13. The method according to any of claims 8 to 12, characterized in that when a network device determines to switch the transmitting antenna of the terminal device from the second carrier to the first carrier, the method further comprises:

and sending second scheduling information to the terminal equipment, wherein the second scheduling information comprises third indicating information and fourth indicating information, the third indicating information is used for indicating the first Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the fourth indicating information is used for indicating the second Orthogonal Frequency Division Multiplexing (OFDM) symbol.

14. The method of claim 13, wherein the determining a first orthogonal frequency division multiplexing, OFDM, symbol for the terminal device to transmit the uplink signal via the first carrier and a second orthogonal frequency division multiplexing, OFDM, symbol for the terminal device to transmit the uplink signal via the second carrier based on the timing advance message and a period for the terminal device to switch transmit antennas comprises:

15. The method according to any one of claims 8 to 14, wherein when a network device determines to switch a transmitting antenna of the terminal device from the second carrier to the first carrier, a downlink direction of the second carrier requires interruption of transmission of a downlink signal during a period when the terminal device switches transmitting antennas, the method further comprising:

The network equipment determines a switching starting time and a switching ending time corresponding to the uplink direction of the first carrier according to the time period of the terminal equipment switching the transmitting antenna;

The network device determines the switching start time and the switching end time corresponding to the downlink direction of the second carrier according to the uplink timing advance of the first carrier, the downlink timing advance of the second carrier and the determined switching start time and the determined switching end time corresponding to the uplink direction of the first carrier, the period between the switching start time and the switching end time corresponding to the downlink direction of the second carrier comprises a third Orthogonal Frequency Division Multiplexing (OFDM) symbol,

and the network equipment does not send downlink information to the terminal equipment on a third Orthogonal Frequency Division Multiplexing (OFDM) symbol corresponding to the downlink direction of the second carrier.

16. The method according to any one of claims 8 to 15, wherein when a network device determines to switch a transmitting antenna of the terminal device from the second carrier to the first carrier, a downlink direction of the first carrier requires interruption of transmission of a downlink signal during a period when the terminal device switches transmitting antennas, the method further comprising:

17. A terminal device, comprising: a processing unit and a communication unit;

18. A network device, comprising: a communication unit;

19. A terminal device, comprising: a transceiver and a processor; wherein,

20. A network device, comprising: a transceiver; wherein,

21. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to cause the terminal device to perform the method of any of claims 1 to 7.

22. A network device, comprising: a processor and a memory for storing a computer program, the processor for invoking and running the computer program stored in the memory to cause the network device to perform the method of any of claims 8 to 16.

23. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 7.

24. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 8 to 16.

25. A computer readable storage medium for storing a computer program which, when executed, implements the method of any one of claims 1 to 7.

26. A computer readable storage medium for storing a computer program which, when executed, implements the method of any one of claims 8 to 16.