CN117676789A - Information transmission method and communication device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Abstract
The application provides an information transmission method and a communication device, wherein the information transmission method comprises the following steps: the terminal equipment acquires a first TA and a second TA. Further, the terminal device sends or receives the first information in the first time unit; alternatively, the terminal device transmits or receives the first information in a first time unit and transmits or receives the second information in a second time unit. Wherein the time domain position of the first time unit is associated with a first TA and the time domain position of the second time unit is associated with a second TA; there is an overlap of the time domain position of the first time unit and the time domain position of the second time unit. By the information transmission method, when the TA causes the overlapping of time units, the terminal equipment can still transmit information, so that the stability of communication is ensured.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an information transmission method and a communications device.
Background
Timing Advance (TA) is a way to reduce the delay of data transmission between a transmitting end and a receiving end by letting the transmitting end transmit data in advance for a period of time (i.e., TA time). TA techniques are commonly used in a time synchronization scenario, for example, where multiple terminal devices in the same cell access the cell through orthogonal access (orthogonal multiple access), and uplink transmissions of the multiple terminal devices have orthogonality (i.e., do not interfere with each other). However, in reality, since different terminal devices are located in different locations of the cell, the transmission delays of uplink transmissions of each terminal device reaching the access network device are different, and are affected by the transmission delays of the uplink transmissions, uplink transmissions of each terminal device received by the access network device may not have orthogonality, so that the uplink transmissions may interfere with each other. In the scene, the influence of transmission delay on the arrival time can be reduced through a TA technology, so that the uplink transmission orthogonality of a plurality of terminal devices is ensured, and the interference between terminals is avoided.
But adjacent time slots may collide when the communication device applies TA for data transmission compensation. In this case, how the communication device performs data transmission is a problem to be solved.
Disclosure of Invention
According to the information transmission method and the communication device, when the time units are overlapped, the communication equipment can still transmit information, so that the stability of communication is guaranteed. It should be understood that, for convenience of explanation, the communication device is merely taken as an example of the terminal device in the following text, and is not to be considered as a specific limitation of the implementation subject of the present application. That is, the method execution subject provided in the first aspect hereinafter may be a terminal device or a network device.
In a first aspect, an embodiment of the present application provides an information transmission method, where an execution body of the information transmission method is a terminal device, the method includes: the terminal equipment acquires a first timing advance TA and a second TA. Further, the terminal device sends or receives the first information in the first time unit; alternatively, the terminal device transmits or receives the first information in a first time unit and transmits or receives the second information in a second time unit. Wherein the time domain position of the first time unit is associated with a first TA and the time domain position of the second time unit is associated with a second TA; there is an overlap of the time domain position of the first time unit and the time domain position of the second time unit.
Based on the method provided in the first aspect, when the two time units overlap due to the timing advance associated with each time unit, the terminal device can continue to transmit information by transmitting information of any time unit or transmitting information of two time units, so as to ensure stability of communication.
In one possible embodiment, when the terminal device transmits or receives the first information at the first time unit, the terminal device discards the second information; alternatively, the terminal device discards the information located in the overlapping portion of the second information. By implementing the possible method, when two time units overlap, the terminal equipment can select the data of any one time unit to transmit, discard the overlapping part data or all data of the other time unit, so as to reduce the processing complexity of the terminal equipment and improve the information processing efficiency.
In one possible embodiment, when the terminal device transmits or receives the first information in the first time unit, the terminal device also transmits or receives the second information in the third time unit; or, the information located at the overlapping portion in the second information is transmitted or received in the third unit. By implementing the possible method, when two time units overlap, the terminal device can select the data of any time unit to transmit, and the overlapped part data or all data of the other time unit are sent on other time units (namely, other time units except the two overlapped time units), so that the integrity of the data transmitted by the terminal device can be improved, and the reliability of communication can be improved.
In one possible embodiment, the third time unit is a default time unit. Or the terminal device receives indication information of the network device, wherein the indication information is used for indicating the third time unit. By implementing the possible method, when the network device does not indicate the third time unit, the terminal device may transmit part or all of the second information according to the default time unit; when the network device indicates the third time unit, the terminal device can transmit part or all of the second information according to the time unit determined by the indication, so that the diversity of the determining mode of the third time unit is improved, and the reliability of communication is further improved.
In one possible implementation, when the terminal device has the capability to send and/or multiple messages in parallel, the terminal device sends or receives the first message in a first time unit and the second message in a second time unit. By implementing the possible mode, the integrity of data transmission of the terminal equipment can be improved, so that the reliability of communication is improved.
In one possible embodiment, the terminal device sends first capability information to the network device, the first capability information being used to indicate that the terminal device has the capability to send and/or receive multiple pieces of information in parallel. By implementing the possible mode, the terminal equipment reports the capability information of the terminal equipment to the network equipment, so that the network equipment can still receive the information sent by the terminal equipment on the two time units when the two subsequent time units are overlapped, and the consistency of the transmission data of the sending end and the receiving end is ensured.
In one possible embodiment, the first TA and the second TA are the same. In this case, when the first TA is less than or equal to the first threshold, the terminal device transmits or receives the first information in the first time unit and transmits or receives the second information in the second time unit. Alternatively, when the sum of the first TA and the timing is less than or equal to the second threshold, the terminal device transmits or receives the first information in the first time unit and the second information in the second time unit. By implementing the possible mode, when the TA related to the first time unit and the second time unit are the same, and if the TA meets the condition, the terminal equipment can send two pieces of information on the two overlapped time units when the terminal equipment has the capability of sending or receiving a plurality of pieces of information in parallel, so that the integrity of data transmitted by the terminal equipment can be improved, and the reliability of communication is improved.
In one possible embodiment, the first TA and the second TA are different. In this case, when the absolute value of the difference between the first TA and the second TA is less than or equal to the third threshold, the terminal device transmits or receives the first information in the first time unit and the second information in the second time unit. Or when the absolute value of the difference between the first time and the second time is smaller than or equal to a fourth threshold value, the terminal equipment sends or receives the first information in the first time unit and sends or receives the second information in the second time unit; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing. By implementing the possible mode, when the TA related to the first time unit and the second time unit are different, if the TA meets the condition, the terminal equipment can send two pieces of information on the two overlapped time units when the terminal equipment has the capability of sending or receiving a plurality of pieces of information in parallel, and the integrity of data transmitted by the terminal equipment can be improved, so that the reliability of communication is improved.
In one possible embodiment, the terminal device sends second capability information to the network device, where the second capability information is used to indicate that the terminal device has the capability to send and/or receive multiple pieces of information in parallel when the first TA and the second TA meet the condition. By implementing the possible mode, the terminal equipment reports the capability information to the network equipment, so that the network equipment can know what kind of condition is followed, the terminal equipment has the capability of transmitting or receiving a plurality of pieces of information in parallel, and the information transmitted by the terminal equipment is received on the two time units, thereby ensuring that the transmitting end and the receiving end have consistency in transmitting data.
In one possible embodiment, the first TA and the second TA meeting the condition includes one or more of the following: when the first TA and the second TA are the same, the first TA is smaller than or equal to a first threshold value; or, when the first TA and the second TA are the same, the sum of the first TA and the timing is less than or equal to the second threshold; or when the first TA and the second TA are different, the absolute value of the difference between the first TA and the second TA is smaller than or equal to the third threshold; or, when the first TA and the second TA are different, the absolute value of the difference between the first time and the second time is less than or equal to the fourth threshold; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing.
In a second aspect, the present application provides a communication device, which may be a device in a terminal device, or a device that can be used in a matching manner with a terminal device. The communication device may also be a chip system. The communication device may perform the method of the first aspect. The functions of the communication device can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the functions described above. The unit may be software and/or hardware. The operations and advantages performed by the communication device may be referred to the methods and advantages described in the first aspect, and the repetition is not repeated.
In a third aspect, the present application provides a communication device, which may be a terminal device in the above method embodiment, or a chip provided in the terminal device. The communication device comprises a communication interface and a processor, and optionally a memory. The memory is used for storing a computer program or instructions, and the processor is coupled with the memory and the communication interface, when the processor executes the computer program or instructions, the communication device executes the method executed by the terminal device in the method embodiment.
In a fourth aspect, the present application provides a computer-readable storage medium for storing computer-executable instructions that, when executed, cause a method performed by a terminal device in a method according to the first aspect to be implemented.
In a fifth aspect, the present application provides a computer program product comprising a computer program which, when executed, causes a method performed by a terminal device in a method according to the first aspect to be carried out.
Drawings
FIG. 1 is a schematic diagram of a system architecture provided herein;
fig. 2 is a graph comparing effects of TA applied and TA not applied provided in the present application;
FIG. 3 is a schematic diagram of a time cell overlap provided herein;
fig. 4 is a schematic flow chart of an information transmission method provided in the present application;
FIG. 5 is a schematic diagram of another time cell overlap provided herein;
fig. 6 is a flow chart of another information transmission method provided in the present application;
fig. 7 is a schematic structural diagram of a communication device provided in the present application;
fig. 8 is a schematic structural diagram of another communication device provided in the present application.
Detailed Description
Specific embodiments of the present application are described in further detail below with reference to the accompanying drawings.
The terms first and second and the like in the description, in the claims and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the present application, "at least one (item)" means one or more, "a plurality" means two or more, and "at least two (items)" means two or three or more, and/or "for describing an association relationship of an association object, three kinds of relationships may exist, for example," a and/or B "may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
For a better understanding of the embodiments of the present application, the following first describes a system architecture related to the embodiments of the present application:
the technical solution of the embodiment of the application can be applied to various communication systems, for example: a fourth generation (4th generation,4G) communication system such as a long term evolution (long term evolution, LTE) system, an LTE frequency division duplex (frequency division duplex, FDD) system, and an LTE time division duplex (time division duplex, TDD), a fifth generation (5th generation,5G) communication system such as a New Radio (NR), and a 5G later evolution communication system such as a sixth generation (6th generation,6G) communication system. Specifically, the technical solution of the embodiment of the present application may be applied to various mobile communication scenarios of the foregoing communication system, as shown in fig. 1, and fig. 1 is a schematic diagram of a system architecture corresponding to each of the various communication scenarios of the present application. As can be seen from fig. 1, the communication scenarios to which the present application may be applied include, but are not limited to: a transmission scenario between point-to-point, a multi-hop/relay (relay) transmission scenario between a network device and a terminal device, a terminal device dual connection (Dual Connectivity, DC) scenario, or a multi-hop multi-connection scenario. Wherein the transmission between the point-to-point includes: transmission between a network device and a terminal device, transmission between a transmission reception point (transmitting and receiving point, TRP) and a terminal device, or transmission between a terminal device and a terminal device. It should be noted that the communication scenario in fig. 1 is only exemplary, and no specific limitation is imposed on the network architecture applicable to the present application, and the present invention does not limit uplink, downlink, access link, backhaul (backhaul) link, side link (sidlink), and other transmissions.
In a system architecture corresponding to a plurality of communication scenarios shown in fig. 1, a terminal device and a network device are involved. The terminal device and the network device according to fig. 1 will be described in detail.
1. Terminal equipment
The terminal device comprises a device for providing voice and/or data connectivity to a user, for example, the terminal device is a device with wireless transceiver functions, which can be deployed on land, including indoor or outdoor, hand-held, 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.). The terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal, an augmented reality (augmented reality, AR) terminal, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal, a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wearable terminal, or the like. The embodiments of the present application are not limited to application scenarios. The terminal device may also be sometimes referred to as a terminal, user Equipment (UE), access terminal, vehicle-mounted terminal, industrial control terminal, mobile station, remote terminal, mobile device, wireless communication device, etc. The terminal may also be fixed or mobile. It will be appreciated that all or part of the functionality of the terminal in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).
2. Network equipment
The network device (may also be referred to as an access network device) is a node or a device that accesses the terminal device to the wireless network, and an interface between the access network device and the terminal device may be a Uu interface (or referred to as an air interface). Of course, in future communications, the names of these interfaces may be unchanged or may be replaced with other names, which are not limited in this application.
The network device may be any device having wireless transceiver capabilities, including but not limited to: a next generation node B (next generation node B, gNB), an evolved node B (eNB), a next generation evolved node B (next generation eNB, ng-eNB), a radio backhaul Device, a radio network controller (radio network controller, RNC), a node B (node B, NB), a home base station (home evolved nodeB, heNB) or a (home node B, HNB)), a baseBand unit (BBU), a TRP, a transmission point (transmitting point, TP), a mobile switching center, a Device-to-Device (D2D), a Device-to-Device (V2X) that performs a function of a base station in a vehicle-to-Device (M2M) communication, and the like in the 5G communication system, and may also include a network Device in a non-terrestrial communication network (non-terrestrial network, NTN) communication system that may be deployed on an altitude platform or a satellite, and the like. Furthermore, the network device may be a Centralized Unit (CU) and/or a Distributed Unit (DU), wherein the CU and the DU have part of the functions of the base station, respectively, e.g. the CU is responsible for handling non-real time protocols and services, implementing radio resource control (radio resource control, RRC), functions of the packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers.
It should be noted that, the numbers of the terminal devices and the network devices in the system architecture respectively corresponding to the various communication scenarios in fig. 1 are only schematic, and are not to be considered as specific limitation of the technical solution of the present application, for example, the system architecture in the transmission scenario between the point-to-point scenarios in fig. 1 may further include a plurality of terminal devices and a plurality of network devices.
In order to facilitate understanding of the content of the present solution, some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
1. Introduction to Antenna Panel (Antenna Panel)
An antenna panel (also simply referred to as a panel) is typically a packaged antenna array. A panel is generally defined to produce an analog beam for a set of multiple transceiver units. Further, considering the polarization, typically one antenna panel comprises 1 or 2 antenna ports.
In order to meet the scene requirement, the communication system adopts a low frequency band and adds a high frequency band (such as 28GHz, 39GHz or 60GHz frequency band) so as to realize larger bandwidth and higher transmission rate. But the more severe the signal fades during spatial propagation at higher frequencies. In order to increase the directional power in the transmitting direction, improve the signal-to-interference-and-noise ratio (signal to interference plus noise radio, SINR) of the receiving end, further improve the system performance, and a Beamforming (BF) technique has been developed, by which a good directional gain can be obtained. The beams are transmitted or received through the antenna panel, and thus the panel is the core component in the implementation of the beamforming technique. In a deployment implementation of a communication system, directional beams are typically used, and in order to meet wide area coverage, both network devices and terminal devices may be deployed using multiple antenna panels.
The antenna panel of the network device or the antenna panel of the terminal device, respectively, is transparent (which transparent is understood to mean that the antenna panel state of the network device is not visible to the terminal device, and likewise the antenna panel state of the terminal device is not visible to the network device), both depending on the respective implementation. Thus, how the beams or resources (signals or channels, etc.) are associated with the antenna panel is also entirely dependent on the device implementation. In other words, when the network device notifies the terminal device of switching the beam, the network device will not be able to determine whether the terminal device switches the antenna panel during the switching of the beam. Switching the antenna panel includes two actions, antenna panel activation and antenna panel switching, and typically requires about 2-3ms for activating the antenna panel, and n us times for activating the switching between the antenna panels, that is, a certain time is required for switching the antenna panel, whether it is a terminal device or a network device. Typically, n us times are required for switching to an active antenna panel, and for switching to an inactive antenna panel, the time for the antenna panel to be active (2-3 ms) plus the time for the antenna panel to be switched (n us) is typically negligible within the Cyclic Prefix (CP) of the symbol. But typically the protocol does not reserve a switching antenna panel time (2-3 ms) for most of the scenarios, so switching antenna panels may not be completed if they are needed while beam switching occurs. The system master control node can only be relied on to ensure that enough time is reserved to complete the switching of the antenna panel by the base station or the terminal.
The antenna panel is a logical entity, and how the physical antennas are mapped to the logical entity is determined by the product implementation. The antenna panel identity may be defined such that the transmitting antenna panel of the terminal device is visible to the network device, i.e. the network device may indicate or obtain the terminal device antenna panel status based on the antenna panel identity. In addition, regarding management and control problems of the antenna panel, the network device may also send an antenna panel activation and deactivation signaling to the terminal device to control activation and deactivation of the terminal device antenna panel; the network equipment can trigger the measurement and reporting of the antenna panel of the terminal equipment; the network device may trigger the terminal antenna panel status reporting, or the terminal device actively reports the antenna panel status to the network device.
In different scenarios, the terminal device may consider a plurality of different antenna panel usage patterns. For example, the terminal device is configured with 5 antenna panels, when the terminal device is in the center of a cell, it is possible that all the 5 antenna panels can be used for transmitting different data, so that the throughput of the terminal and the system can be improved; when the terminal is at the edge of the cell, because the power is limited, the 5 antenna panels can form different antenna panel combinations according to different power requirements, the panels of the same antenna panel combination transmit the same data, and the panels of different antenna panel combinations transmit different data, so that the power can be improved, the coverage of the cell can be expanded, and the robustness of the edge cell can be improved.
2. Multiple-receive point (MTRP) scene/multiple-antenna panel (multi-panel) scene
In the MTRP scenario, a transmitting end device (e.g., a terminal device) may communicate with multiple TRPs, thereby increasing reliability and throughput performance of communication transmissions. Similarly, in a multi-antenna panel scenario, a transmitting end device (e.g., a terminal device) may also communicate with one or more TRPs through multiple antenna panels, thereby increasing reliability and throughput performance of communication transmission.
In an MTRP scenario, the transmission delay (also known as distance) between a terminal device and each TRP may be different, so in an MTRP scenario, the terminal device may need to maintain one or more TAs for uplink transmission with the multiple TRPs. For example, determining an uplink transmission correspondence TA1 between the terminal device and TRP1 according to the distance between the terminal device and TRP 1; and determining the uplink transmission corresponding TA2 between the terminal equipment and the TRP2 according to the distance between the terminal equipment and the TRP 2. Similarly, in the multi-antenna panel scenario, the transmission delay between each antenna panel of the terminal device and the receiving end device is different, so that the terminal device needs to maintain one or more TAs when transmitting data through its own antenna panel.
3. Time slots
In a communication system, a frame length of transmission is 10ms, and each frame is divided into 10 subframes, each subframe being 1ms long. Each subframe is in turn divided into several slots (slots), each slot consisting of 14 OFDM symbols. The specific time length of each slot is determined by a parameter set, for example, when the subcarrier spacing (SCS) is 15kHz, one slot is 1ms long; one slot is 0.5ms long when SCS is 30 kHz. It is understood that the larger the subcarrier spacing, the shorter the duration of an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, and the smaller slot.
The slot used for uplink data transmission is generally denoted as U slot, the slot used for downlink transmission is denoted as D slot, and the slots used for both uplink and downlink transmission are denoted as S slot. In a typical time division multiplexed (time division duplex, TDD) system time slot configuration format, including DDDSU, DDDSUDDSUU, DDDDDDDDUU, etc.
It should be appreciated that a slot may include downlink symbols (downlink symbols), uplink symbols (uplink symbols), and flexible symbols (flexible symbols), and that the downlink symbols cannot be used for uplink transmission; the uplink symbol cannot be used for downlink transmission; while flexible symbols can be used for both downlink and uplink transmissions.
4. Timing Advance (Timing Advance, TA)
For uplink transmission of the system, orthogonality must be obtained between uplink transmissions of different terminal devices in the same cell, so as to avoid interference between uplink transmissions of each terminal device. However, due to the different locations of the cells, the propagation delay of the uplink transmission from each terminal device to the network device may be different, although the uplink transmission from each terminal device is transmitted by an orthogonal multiple access technology (such as OFDM technology or discrete fourier transform spread-spectrum (DFT-S-OFDM) technology), when the uplink transmission from each terminal device arrives at the network device, the uplink transmissions from each terminal device are not orthogonal, and there is mutual interference. Therefore, in order to reduce propagation delay of uplink transmission to network equipment and ensure orthogonality of uplink transmission of different terminal equipment, a TA technology is designed. TA techniques can be described as: the terminal equipment sends the uplink transmission in advance for a period of time (namely TA time), so that the time difference of the uplink transmission of each terminal equipment reaching the network equipment is ensured to be within the CP range, and further, the time of the uplink transmission of each terminal equipment reaching the network equipment is ensured to be aligned (or understood to be the same), so that orthogonality among the uplink transmissions is ensured, and the network equipment can correctly decode the uplink transmissions.
Illustratively, the network device serves two terminal devices: when uplink transmission 1 of UE1 and uplink transmission 2 of UE2 arrive at the network device at the same time, orthogonality exists between uplink transmission 1 and uplink transmission 2, and the network device can correctly decode each uplink transmission (i.e. uplink transmission 1 and uplink transmission 2). Referring to fig. 2, fig. 2 is a graph comparing effects of TA applied and TA not applied. In block 2a in fig. 2, with reference to the downlink timing of the network device (i.e., the network device timing in fig. 2), that is, with the time at which the network device transmits downlink information containing uplink scheduling information (i.e., DL in fig. 2) to UE1 and UE2 being 0, UE1 receives the downlink information (i.e., DL in fig. 2) at time t1 and UE2 receives the downlink information (i.e., DL in fig. 2) at time t2 due to the transmission delay between the terminal device and the network device. That is, the transmission delay between UE1 and the network device is t1, and the transmission delay between UE2 and the network device is t2.
If TA adjustment is not performed on the uplink transmission time of the terminal device, even if the terminal device receives the downlink information and immediately transmits uplink data (i.e. ignores the time of demodulating the uplink scheduling information), the network device receives uplink data of each terminal device as shown in a module 2a in fig. 2, the network device receives uplink data of UE1 at a time 2t1 (i.e. UL1 'in a module 2 a), and the network device receives uplink data of UE2 at a time 2t2 (i.e. UL2' in a module 2 a), so that uplink data of UE1 and uplink data of UE2 cannot arrive at the same time on the network device side, and interference may occur.
If the TA adjustment is performed on the uplink transmission time of the terminal device, the UE1 sends uplink data in advance of the time of TA1 (i.e. 2t 1) with the transmission time of 2a in fig. 2 as a reference; the UE2 sends the uplink data in advance of the time TA2 (i.e. 2t 2) with reference to the sending time of 2a in fig. 2, as shown in the module 2b in fig. 2, the network device will receive the uplink data of the UE1 (i.e. UL1 "in the module 2 b) and the uplink data of the UE2 (i.e. UL2" in the module 2 b) at the same time, and it is seen that the uplink data of the UE1 and the uplink data of the UE2 arrive at the network device side at the same time, and no interference will occur.
The sender device may typically obtain the TA value by statically configuring the TA initial value and dynamically indicating the TA offset. Taking the transmitting end device as the terminal device as an example, the network device may send a TA adjustment command with an integer multiple of 16Ts as an adjustment granularity to the terminal device. TA adjustment has two ways:
(1) By means of random access response (random access response, RAR) messages
After the terminal equipment sends the random access message to the network equipment in the random access stage of the terminal equipment, the network equipment sets the random access message to the terminalAnd sending RAR information, wherein the RAR information carries a TA adjustment value, and the TA adjustment value ranges from 0 to 3846. Further, the terminal device adjusts the uplink transmission timing N according to the TA adjustment value TA (wherein N TA Is the product of TA and 16Ts, ts being one time unit).
(2) By means of TA adjustment commands
After the terminal equipment is accessed, the terminal equipment receives a TA adjustment command from the network equipment, wherein the TA adjustment value range in the TA adjustment command is 0-63. Further, the terminal device may determine to adjust the uplink transmission timing N according to formula (1) TA 。
N TA_new ＝N TA_old +(TA-31)×16×64/2 μ (1)
Wherein N is TA_new For adjusted N TA ，N TA_old To N before adjustment TA . It can be seen that when the TA adjustment value indicated in the TA adjustment command is less than 31, N TA_new Less than N TA_old The terminal device delays sending the uplink data, i.e. the distance between the terminal device and the network device becomes shorter.
It is to be understood that the TA commands mentioned later in this application include, but are not limited to, the aforementioned RAR message and TA adjustment command.
In addition, the uplink frame number of the terminal equipment for transmitting the uplink data should be earlier than the downlink transmission frame by T TA The T can be determined according to equation (2) TA Is a value of (2).
T TA ＝(N TA +N TA offset )T c (2)
Wherein N is TA offset Is a fixed value related to the operating frequency band, typically N in low frequency time division duplex (time division duplex, TDD) mode TA offse Has a value of 39936 or 25600, N in the low frequency (i.e., FR1 band) TA offset Is 25600, N at high frequency TA offse Is 13792.Tc is a unit of time and is usually 1/480 kHz.4096.
Although the impact of data transmission delay can be reduced by timing advance techniques, when the communication device applies timing advance to transmit information, there may be a scenario where time units overlap. In this scenario, how to transmit data is a problem to be solved.
For example, referring to a schematic diagram of time cell overlapping provided in fig. 3, a terminal device needs to transmit information 1 to TRP1 in time cell 1 and transmit information 1 to TRP2 in time cell 2. Considering the transmission delay between the terminal equipment and the TRP1, the terminal equipment adjusts the time domain position of the time unit 1 according to the TA1 corresponding to the TRP1 as shown in the time unit 11; considering the transmission delay between the terminal device and TRP2, the terminal device adjusts the time domain position of time unit 2 according to the TA2 corresponding to TRP2 as shown in time unit 22. As can be seen from fig. 3, there is an overlap between the time domain position of the time unit 22 and the time domain position of the time unit 11, and how the terminal device sends information in this case is a problem to be solved. It is to be appreciated that in fig. 3 it is shown that TA2 is greater than TA1, resulting in a situation where there is an overlap of the time domain position of time cell 22 with the time domain position of time cell 11. If TA2 is less than or equal to TA1, the time domain position of time unit 22 and the time domain position of time unit 11 may not overlap; there may also be an overlap, for example, due to the influence of TRP1 and TRP2 on the processing rate of the data, a certain deviation may occur between the timing reference of TRP1 and the timing reference of TRP2, in which case there may also be an overlap of the time domain position of the corresponding time cell 22 with the time domain position of time cell 11, for example, for time cell 1 and time cell 2 corresponding to the same TA. In this case, how the terminal device transmits the information is a problem to be solved.
In order to solve the problem of how to transmit data by a communication device when time units overlap, the application provides an information transmission method and a communication device. The information transmission method and the communication device provided by the application are further described below with reference to the accompanying drawings:
referring to fig. 4, fig. 4 is a flowchart of an information transmission method according to an embodiment of the present application. As shown in fig. 4, fig. 4 illustrates an example in which a terminal device is an execution subject. It is understood that the execution subject of the information transmission method may also be a chip in the terminal device. Wherein:
s401, the terminal equipment acquires a first TA and a second TA.
And the terminal equipment receives the TA command from the network equipment and acquires the first TA and the second TA according to the TA command. Among them, the TA command mentioned in the present application is a message for adjusting or setting a TA value, and for example, the TA command includes, but is not limited to, a RAR message and a TA adjustment command.
The first TA is associated with a time domain position of a first time unit, the second TA is associated with a time domain position of a second time unit, the first time unit is used for sending or receiving first information, the second time unit is used for sending or receiving second information, and the time domain position of the first time unit and the time domain position of the second time unit are overlapped. In other words, the time domain position of the first time unit is determined according to the first TA, and the time domain position of the second time unit is determined according to the second TA, so that the time domain position of the first time unit overlaps with the time domain position of the second time unit, and in this scenario, how the terminal device performs the transmission (including the sending or the receiving) of the information may be referred to the specific implementation method described in S402 or S403.
It should be noted that, the present application does not specifically limit whether the terminal device can acquire the first TA and the second TA through the same TA command, or whether the terminal device can acquire the first TA and the second TA through the same network device. That is, the terminal device may receive a TA command from a network device, where the TA command carries the first TA and the second TA; or, the terminal device may receive two TA commands from a network device, where the two TA commands respectively carry the first TA and the second TA; or the terminal device may receive two TA commands from the two network devices, respectively, the two TA commands carrying the first TA and the second TA, respectively.
It should be noted that the time units mentioned in the present application include, but are not limited to, slots, consecutive time domain resources, and consecutive OFDM symbols.
It should be noted that, the time domain position of the first time unit and the time domain position of the second time unit overlap, which may also be expressed as that the first time unit and the second time unit overlap; or, there is a partial or complete identity between the time domain resources in the first time unit and the time domain resources in the second time unit; alternatively, there is at least one instant in the duration of the first time unit (i.e. between the start instant and the end instant) that is the same as the instant in the duration of the second time unit.
It should be further noted that, in the present application, the reason that the time domain position of the first time unit overlaps with the time domain position of the second time unit may be understood as: the first time unit and the second time unit overlap due to the TA command; alternatively, the first time cell and the second time cell overlap due to different time cell associations with different TAs.
S402 (optionally), the terminal device transmits or receives the first information at the first time unit.
The first time unit may be a time unit with a front time domain position (i.e., a front starting time) on the two overlapped time units, or may be a time unit with a rear time domain position (i.e., a rear starting time) on the two overlapped time units, which is not specifically limited herein. For example, the first time unit is the time unit with the largest associated TA of the two time units, and the first time unit may be the time unit with the smallest associated TA of the two time units. For another example, the first time unit is the largest time unit of the sum of the associated times (the sum of the time and the timing (the uplink timing or the downlink timing)) in the two time units, and the first time unit may be the smallest time unit of the associated times in the two time units.
That is, when the first time unit and the second time unit overlap, the terminal device may determine one time unit (i.e., the first time unit) from the two overlapping time units and transmit information (i.e., the first information) on the time unit.
In this case, the problem of how to handle the second information transmitted in the second time unit is described in the following two ways.
Mode one: discarding the second information; or discard the information located in the overlapping portion of the second information. The overlapping portion refers to a time domain position overlapping between the time domain position of the first time unit and the time domain position of the second time unit.
For example, in fig. 3, time unit 1 is used to transmit information 1, and time unit 2 is used to transmit information 2; the time domain position of the time unit 1 is associated with TA1, and the time domain position of the time unit 1 is adjusted according to TA1 as shown in a time unit 11; the time domain position of the time unit 2 is associated with TA2, and the time domain position of the time unit 2 is adjusted according to TA2 as shown in the time unit 22; there is an overlap of the time domain position of time cell 22 with the time domain position of time cell 11. Taking time unit 11 as a first time unit, information 2 as a second information as an example. In one example, the terminal device sends information 1 on time unit 11 and discards the information 2. In another example, the terminal device sends information 1 on time unit 11 and discards information in the overlapping portion of information 2, while information in the non-overlapping portion of information 2 may continue to be transmitted in the non-overlapping portion of time unit 22.
That is, in one possible embodiment, discarding the information located in the overlapping portion of the second information may be understood as: the second information not in the overlapping portion may continue to be transmitted.
Mode two: transmitting or receiving the second information in a third time unit; or, the information located at the overlapping portion in the second information is transmitted or received in the third time unit.
The starting time of the third time unit may be before the starting time of any one of the two overlapped time units, and the starting time of the third time unit may be after the ending time of any one of the two overlapped time units.
For example, in fig. 3, time unit 1 is used to transmit information 1, and time unit 2 is used to transmit information 2; the time domain position of the time unit 1 is associated with TA1, and the time domain position of the time unit 1 is adjusted according to TA1 as shown in a time unit 11; the time domain position of the time unit 2 is associated with TA2, and the time domain position of the time unit 2 is adjusted according to TA2 as shown in the time unit 22; there is an overlap of the time domain position of time cell 22 with the time domain position of time cell 11. Taking time unit 11 as a first time unit, information 2 as a second information as an example. In one example, the terminal device transmits information 1 on time cell 11, the terminal device does not transmit information 2 on time cell 22, and transmits information 2 on some time cell after time cell 22 (e.g., the first available time cell after time cell 22: time cell 3). In another example, the terminal device transmits information 1 on time unit 11, transmits information that is not in an overlapping portion of information 2 in a non-overlapping portion of time unit 22, and transmits information that is in an overlapping portion of information 2 on some time unit after time unit 22 (e.g., the first available time unit after time unit 22: time unit 3).
With respect to the third time unit, in one possible embodiment, the third time unit is a default time unit. It is understood that the terminal device determines the third time unit, and specifically the manner in which the third time unit is determined is that the third time unit is determined according to a rule (preset rule) after the network device and the terminal device are commonly known. The preset rule may be an nth available time unit (i.e., a time unit that the terminal device may use to transmit the second information) after (or before) the third time unit is an overlapping time unit, where n is a positive integer greater than or equal to 1.
In relation to the third time unit, in another possible embodiment, the terminal device receives indication information of the network device, the indication information being used to indicate the location of the third time unit. That is, in this manner the third time unit may be informed to the terminal device after being determined by the network device.
In a further possible embodiment, the terminal device transmits notification information to the network device, which notification information is used to indicate the position of the third time unit, i.e. in this way the third time unit can be determined by the terminal device and then notified to the network device.
In relation to the third time unit, in a further possible embodiment, the terminal device and the network device negotiate to determine the third time unit. For example, the terminal device determines the location of the third time unit and sends indication information to the network device to indicate the location of the third time unit, and the network device confirms the location of the third time unit.
S403 (optional), the terminal device transmits or receives the first information in a first time unit and the second information in a second time unit.
That is, when the time domain position of the first time unit and the time domain position of the second time unit overlap, the terminal device may still transmit or receive information (i.e., the first information and the second information) on the two time units (the first time unit and the second time unit). It should be noted that, in the present application, the actions of transmitting the information in the first time unit and the second time unit may not be identical, that is, when the terminal device transmits the first information in the first time unit, the terminal device may transmit the second information in the second time unit, and the terminal device may also receive the second information in the second time unit. Otherwise, when the terminal device receives the first information in the first time unit, the terminal device may receive the second information in the second time unit, and the terminal device may also send the second information in the second time unit. This is not specifically limited in this application, and is all that is done.
In a first possible embodiment, when the terminal device has the capability to send or receive a plurality of information in parallel, the terminal device sends or receives the first information in a first time unit and the second information in a second time unit. That is, when the first time unit and the second time unit overlap, the terminal device may transmit both the first information and the second information at the overlapping portion, so that the terminal device may transmit or receive the first information at the first time unit and may also transmit or receive the second information at the second time unit.
In such an embodiment, the terminal device may also send first capability information to the network device, the first capability information being used to indicate that the terminal device has the capability to send or receive multiple pieces of information in parallel. It is understood that the terminal device may report the first capability information to the network device in advance so that the network device knows that the network device can still transmit information on two time units when the two time units overlap later.
In a second possible embodiment, the first TA is the same as the second TA. When the first TA (or the second TA) is less than or equal to the first threshold, the terminal device transmits or receives first information in a first time unit and transmits or receives second information in a second time unit. Alternatively, when the sum of the first TA (or the second TA) and the timing is less than or equal to the second threshold, the terminal device transmits or receives the first information in the first time unit and the second information in the second time unit. Alternatively, when the absolute value of the difference between the first TA (or the second TA) and the timing is less than or equal to the fifth threshold, the terminal device transmits or receives the first information in the first time unit and the second information in the second time unit. Or, in the case that the first TA and the second TA correspond to the same timing, when the timing is less than or equal to the sixth threshold, the terminal device transmits or receives the first information in the first time unit and transmits or receives the second information in the second time unit.
The timing (including uplink timing and/or downlink timing) referred to in this application may be one or more of a time domain sampling point index, a CP boundary, an OFDM symbol boundary, a slot boundary, a field boundary, a frame boundary, a superframe boundary, a signal or channel transmission or end time.
In a third possible embodiment, the first TA is different from the second TA. When the absolute value of the difference between the first TA and the second TA is smaller than or equal to a third threshold value, the terminal equipment sends or receives the first information in a first time unit and sends or receives the second information in a second time unit. Or the first TA corresponds to the first timing, the second TA corresponds to the second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing; when the absolute value of the difference between the first time and the second time is less than or equal to the fourth threshold, the terminal device transmits or receives the first information in the first time unit and the second information in the second time unit. Or the first TA corresponds to the first timing, the second TA corresponds to the second timing, the first time difference is the difference between the first TA and the first timing, the second time difference is the difference between the second TA and the second timing, and when the absolute value of the difference between the first time difference and the second time difference is smaller than or equal to a seventh threshold, the terminal equipment sends or receives the first information in the first time unit and sends or receives the second information in the second time unit. Or, the first TA corresponds to the first timing, the second TA corresponds to the second timing, and when the absolute value of the difference between the first timing and the second timing is less than or equal to the eighth threshold, the terminal device sends or receives the first information in the first time unit, and sends or receives the second information in the second time unit.
In a fourth possible embodiment, the time domain position of the overlapping portion between the first time unit and the second time unit is smaller than or equal to the ninth threshold, and the terminal device sends or receives the first information in the first time unit and the second information in the second time unit.
In other words, in any one of such second to fourth possible embodiments, the capability of the terminal device to transmit or receive a plurality of pieces of information in parallel is a limiting capability. When two overlapping time units are associated with the same TA, if the TA is smaller than or equal to a first threshold (or the sum of the TA and the timing is smaller than a second threshold), the terminal equipment has the capability of transmitting or receiving a plurality of pieces of information in parallel; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel. When two overlapping time units are associated with different TAs, if the absolute value of the difference between the first TA and the second TA is smaller than or equal to a second threshold (or the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel. When two overlapped time units are associated with the same TA, if the absolute value of the difference between the TA and the timing is smaller than or equal to a fifth threshold value, the terminal equipment has the capability of transmitting or receiving a plurality of pieces of information in parallel; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel. Or under the condition that the first TA and the second TA correspond to the same timing, if the timing is smaller than or equal to a sixth threshold, the terminal equipment has the capability of transmitting or receiving a plurality of pieces of information in parallel; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel. When the first TA corresponds to the first timing and the second TA corresponds to the second timing, the first time difference is the difference between the first TA and the first timing, and when the second time difference is the difference between the second TA and the second timing, if the absolute value of the difference between the first time difference and the second time difference is less than or equal to a seventh threshold, the terminal equipment has the capability of transmitting or receiving a plurality of information in parallel; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel. When the first TA corresponds to the first timing and the second TA corresponds to the second timing, if the absolute value of the difference value between the first timing and the second timing is smaller than or equal to an eighth threshold value, the terminal equipment has the capability of transmitting or receiving a plurality of pieces of information in parallel; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel. When the time domain position of the overlapped part between the first time unit and the second time unit is smaller than or equal to a ninth threshold value, the terminal equipment has the capability of transmitting or receiving a plurality of pieces of information in parallel; otherwise, the terminal device does not have the capability to send or receive multiple information in parallel.
The values of the first threshold may be adjusted accordingly according to a specific application scenario, which is not specifically limited in the present application, and the values of the second threshold to the ninth threshold are not specifically limited in the same manner; and the values of the first threshold value to the ninth threshold value may be the same or different. The values of the first to ninth thresholds may beOr->An OFDM symbol.
In any of the second to fourth possible embodiments, the terminal device may further send second capability information to the network device, where the second capability information is used to indicate that the terminal device has a capability to send or receive multiple pieces of information in parallel when the first TA and the second TA satisfy the condition. Wherein the first TA and the second TA satisfy the condition includes: when the first TA and the second TA are the same, the first TA is smaller than or equal to a first threshold value; or when the first TA and the second TA are the same, the sum of the first TA and the timing is less than or equal to the second threshold; or when the first TA and the second TA are different, the absolute value of the difference between the first TA and the second TA is smaller than or equal to the third threshold; or, when the first TA and the second TA are different, the absolute value of the difference between the first time and the second time is less than or equal to the fourth threshold; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing. Alternatively, the second capability information is used to indicate that the terminal device has the capability of transmitting or receiving a plurality of pieces of information in parallel when the time domain position of the overlapping portion between the first time unit and the second time unit is less than or equal to the fifth threshold. It can be understood that the terminal device may report the second capability information to the network device in advance, so that the network device knows that when two time units overlap and the TA associated with the two time units satisfies the above condition, the terminal device has the capability of sending or receiving multiple data in parallel, and still can transmit the data of the two time units to the network device; in contrast, the terminal device does not have the capability to send or receive multiple data in parallel.
It should be noted that, when the terminal device does not have the capability of transmitting or receiving a plurality of pieces of information in parallel, the terminal device may transmit information according to the specific embodiment described in S402, or may transmit information according to the fourth possible embodiment and the fifth possible embodiment in S403.
In a fifth possible implementation manner, the terminal device performs code rate fast allocation according to the overlapping part of the first time unit and the second time unit; further, the terminal device sends or receives the first information in the first time unit and sends or receives the second information in the second time unit according to the code rate quick configuration result. An exemplary explanation will be made below with a terminal device as a transmitting end device.
For example, the first time unit and the second time unit each include 14 OFDM symbols, and the start time position of the first time unit is before the start time position of the second time unit, and the last OFDM symbol of the first time unit overlaps with the first OFDM symbol of the second time unit. In this case, the terminal device may perform rate matching on the first information in the first time unit according to the ratio (i.e. 14/13) between the total OFDM symbol number (i.e. 14) and the non-overlapping OFDM symbol number (i.e. 13) in the first time unit, that is, increase the coding rate of the first information by 1.08 (i.e. 14/13) times the original coding rate. So that the overlapping part in the first time unit (last OFDM symbol) is free of information to be transmitted and the second information can be transmitted on the overlapping part in the second time unit (first OFDM symbol).
That is, in this possible embodiment, the first time unit and the second time unit overlap, and the duration of a certain time unit (for example, the time unit before the start time) may be reduced, and the first information may be transmitted or received in the first time unit, and the second information may be transmitted or received in the second time unit.
In a sixth possible implementation manner, when the first time unit and the second time unit overlap, the terminal device discards the time domain sampling point of the first time unit and/or the time domain sampling point of the second time unit, and sends or receives the first information in the first time unit, and sends or receives the second information in the second time unit.
In a seventh possible implementation manner, when the first time unit and the second time unit overlap, the terminal device discards the time domain sampling point of the overlapping portion of the first time unit and/or the time domain sampling point of the overlapping portion of the second time unit, and sends or receives the first information in the first time unit, and sends or receives the second information in the second time unit.
In an eighth possible implementation manner, when the first time unit and the second time unit overlap, the terminal device decreases the first time unit transmission time and/or the second time unit transmission time, or the terminal device decreases the first time unit reception time and/or the second time unit reception time, and sends or receives the first information in the first time unit and the second information in the second time unit.
It can be seen that by the transmission method provided in fig. 4, when the two time units overlap due to the timing advance associated with each other, the terminal device can continue to transmit information by transmitting information of any time unit or transmitting information of two time units, so as to ensure stability of communication.
The information transmission method provided in fig. 4 is applicable to a scenario in which time units overlap, and the scenario in which time units overlap is first illustrated, and then the information transmission method provided in fig. 4 is described with reference to a specific application scenario. It should be appreciated that the application scenarios of the information transmission method provided in the present application include, but are not limited to, the following scenarios.
Scene 1: the first time unit is used for transmitting first information of the terminal equipment and the first TRP, and the second time unit is used for transmitting second information of the terminal equipment and the second TRP. Wherein the first TRP and the second TRP may be distinguished by controlling a resource pool index value (also known as CORESET pool index).
Scene 2: the terminal device comprises a first antenna panel and a second antenna panel, wherein the first antenna panel and the second antenna panel are distinguished by a candidate index value (also called as a candidate value); the terminal device transmits the first information over a first time unit via the first antenna panel and the second information over a second time unit via the second antenna panel.
Scene 3: the first time unit is used for transmitting first information to a first cell (also called a cell), and the first time unit is used for transmitting second information to a second cell. Wherein the physical cell identity (physical cell identifier, PCI) of the first cell and the PCI of the second cell may be different; or the first cell is a serving cell and the second cell is a neighbor cell; alternatively, the first cell is a serving cell, and the second cell is a cell different from the PCI of the serving cell.
Scene 4: the terminal device transmits the first information on the first time unit through the first antenna and transmits the second information on the second time unit through the second antenna.
Scene 5: the terminal device transmits the first information over a first time unit via a first beam and transmits the second information over a second time unit via a second beam.
Wherein "transmission" in scenario 1-scenario 5 includes one or more of: transmission, reception, transmission, and reception. The first TA associated with the first time unit and the second TA associated with the second time unit may be the same or different. It should be noted that, the foregoing scenes 1 to 5 are feature descriptions of a certain type of scene, and cannot be completely understood as mutually independent scenes, that is, the scenes 1 to 5 may be different descriptions of the same scene. For example, in one scenario: the terminal device transmitting first information to a first TRP over a first time unit via a first antenna panel and the terminal device transmitting second information to a second TRP over a second time unit via a second antenna panel; in this scenario, the features of both scenario 1 and scenario 2 are described.
For simplicity of description, an exemplary description of the information transmission method provided in fig. 4 is described below in connection with the aforementioned scenario 1.
In example 1 of scenario 1, the terminal device acquires a first TA (abbreviated as TA1 in this example) and a second TA (abbreviated as TA2 in this example) through the specific embodiment described in S401. Wherein TA1 is associated with a time domain position of a first time unit, TA2 is associated with a time domain position of a second time unit, the first time unit is used for transmitting information 1 to the first TRP, the second time unit is used for transmitting information 2 to the second TRP, and the time domain position of the first time unit and the time domain position of the second time unit overlap (the overlapping portion is shown in (1) in fig. 5). A schematic representation of the overlapping of the time domain position of the first time unit and the time domain position of the second time unit is shown in example 1 of fig. 5. In this example, the terminal device may transmit (including sending or receiving, in full,) information 1, discard information 2, or discard information of overlapping portions (as shown in (1) in fig. 5) of information 2 at the first time unit as in the specific embodiment described in S402. Alternatively, in this example, the terminal device may also transmit the information 2 on a third time unit (not specifically shown in fig. 5) other than the first time unit and the second time unit, or transmit information of an overlapping portion (as shown in (1) in fig. 5) in the third time unit, as in the specific embodiment described in S402. Alternatively, in this example, the terminal device may also send information 1 in a first time unit and information 2 in a second time unit as in the embodiment described in S403. The specific implementation process can be seen from the specific description of S402 and S403.
In example 2 of scenario 1, the terminal device acquires a first TA (abbreviated as TA1 in this example) and a second TA (abbreviated as TA2 in this example) through the specific embodiment described in S401. Wherein TA1 is associated with a time domain position of a first time unit, TA2 is associated with a time domain position of a second time unit, the first time unit is used for transmitting information 1 to the first TRP, the second time unit is used for transmitting information 2 to the second TRP, and the time domain position of the first time unit and the time domain position of the second time unit overlap (the overlapping portion is shown in (2) in fig. 5). And there is also a time unit (referred to as a fourth time unit in this example) before the first time unit, the fourth time unit being used to transmit information 3 to the first TRP, the fourth time unit being associated with a third TA (e.g., the third TA is 0 in fig. 5). In this case, there is also an overlap between the time domain position of the first time unit and the time domain position of the fourth time unit (as shown in fig. 5 (3)). In this example, the terminal device may transmit information 3 in the fourth time unit and information 2 in the second time unit as in the specific embodiment described in S402, discard information 1 or discard information of overlapping portions (as shown in (2) and (3) of fig. 5) in information 1, thereby guaranteeing the integrity of information 3 and information 2. Alternatively, the terminal device may also transmit information 1 in the first time unit, information 2 in the second time unit, and information 3 in the fourth time unit as in the embodiment described in S403.
In order to systematically describe interactions between a transmitting end device and a receiving end device in the information transmission method provided in fig. 4, another flow chart of the information transmission method is provided in the embodiment of the present application. As shown in fig. 6, fig. 6 illustrates an example in which a terminal device and a network device are executed, wherein the terminal device is a transmitting device, and the network device is a receiving device. It is understood that the execution subject of the information transmission method may also be a chip in the terminal device and a chip in the network device. Wherein:
s601, the network equipment configures a first TA and a second TA to the terminal equipment.
The first TA is associated with a time domain position of a first time unit, the second TA is associated with a time domain position of a second time unit, the first time unit is used for sending or receiving first information, the second time unit is used for sending or receiving second information, and the time domain position of the first time unit and the time domain position of the second time unit are overlapped.
In particular, reference may be made to the foregoing description of the specific implementation of S401 with respect to the specific implementation of S601.
S602 (optionally), the terminal device sends first information to the network device at a first time unit.
Accordingly, the network device receives the first information at the first time unit. For a specific implementation of S602, reference may be made to the foregoing description of a specific implementation of S402. The information received by the network device is consistent with the information sent by the terminal device.
In one example, a terminal device sends first information to a network device over a first time unit and discards second information. Accordingly, the network device may receive the first information over the first time unit and may not receive the second information over the second time unit.
In another example, the terminal device sends the first information to the network device over a first time unit, discards the second information of the overlapping portion, and continues to send information of the second information that is not in the overlapping portion in a non-overlapping portion in a second time unit. Correspondingly, the network device can receive the first information in the first time unit and receive the information which is not in the overlapped part in the second information in the second time unit. And, the network device does not perform a discarding operation after receiving the information which is not in the overlapping portion in the second information in the second time unit.
In one possible embodiment, the network device may further send indication information to the terminal device, the indication information being used to indicate the third time unit. See for details the description of mode two of S402.
In one possible embodiment, the network device determines the third time unit according to rules (preset rules) which are common to the network device and the terminal device. The preset rule may be an nth available time unit (i.e., a time unit that the terminal device may use to transmit the second information) after (or before) the third time unit is an overlapping time unit, where n is a positive integer greater than or equal to 1.
S603 (optionally), the terminal device sends the first information to the network device in a first time unit and the second information to the network device in a second time unit.
For a specific implementation of S603, reference may be made to the foregoing description of a specific implementation of S403. The execution action of the network device corresponds to the transmission action of the terminal device.
In one possible implementation, the network device receives first capability information from the terminal device. See in particular the description of the first possible implementation of S403 previously described. Further, the network device receives first information at a first time unit and second information at a second time unit according to the first capability information.
In one possible implementation, the network device receives the second capability information from the terminal device. Reference may be made in particular to the description relating to the second possible embodiment and/or to the description relating to the third possible embodiment in S403. Further, the network device receives the first information at a first time unit and the second information at a second time unit according to the second capability information.
It can be seen that by the information transmission method provided in fig. 6, when the two time units overlap due to the timing advance associated with each other, the terminal device and the network device can still perform information transmission in a manner of transmitting information of any time unit or in a manner of transmitting information of two time units, so that stability of communication is ensured.
Referring to fig. 7, fig. 7 shows a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus shown in fig. 7 may be used to implement part or all of the functions of the terminal device in the embodiment corresponding to the above information transmission method, or the communication apparatus shown in fig. 7 may be used to implement part or all of the functions of the network device in the embodiment corresponding to the above information transmission method.
In one embodiment, the communication apparatus shown in fig. 7 may be used to implement some or all of the functions of the terminal device in the method embodiments described above with respect to fig. 4 or fig. 6. The device can be a terminal device, a device in the terminal device or a device which can be matched with the terminal device for use. The communication device may also be a chip system. The communication device shown in fig. 7 may include a communication module 701 and a processing module 702, wherein:
a communication module 701, configured to obtain a first TA and a second TA;
the communication module 701 is further configured to send or receive first information in a first time unit;
alternatively, the communication module 701 is further configured to send or receive the first information in a first time unit, and send or receive the second information in a second time unit.
In a possible implementation, when the communication module 701 is configured to send or receive the first information in the first time unit, the processing module 702 is configured to discard the second information; alternatively, the processing module 702 is configured to discard the information located in the overlapping portion of the second information.
In a possible implementation, when the communication module 701 is configured to send or receive the first information at the first time unit, the communication module 701 is further configured to send or receive the second information at the third time unit; or, the communication module 701 is further configured to send or receive, in the third unit, the information located in the overlapping portion in the second information.
In one possible embodiment, the third time unit is a default time unit. Or, the communication module 701 is further configured to receive indication information of the network device, where the indication information is used to indicate the third time unit.
In a possible implementation, when the terminal device has the capability of transmitting and/or receiving multiple information in parallel, the communication module 701 is further configured to transmit or receive the first information in a first time unit and to transmit or receive the second information in a second time unit.
In a possible implementation manner, the communication module 701 is further configured to send first capability information to the network device, where the first capability information is used to indicate that the terminal device has a capability of sending and/or receiving multiple pieces of information in parallel.
In one possible embodiment, the first TA and the second TA are the same. In this case, if the first TA is less than or equal to the first threshold, the communication module 701 is further configured to send or receive the first information in the first time unit and send or receive the second information in the second time unit. Alternatively, when the sum of TA and timing is less than or equal to the second threshold, the communication module 701 is further configured to send or receive the first information in the first time unit and send or receive the second information in the second time unit.
In one possible embodiment, the first TA and the second TA are different. In this case, the communication module 701 is further configured to send or receive first information in a first time unit and send or receive second information in a second time unit when the absolute value of the difference between the first TA and the second TA is less than or equal to the third threshold. Or, when the absolute value of the difference between the first time and the second time is less than or equal to the fourth threshold, the communication module 701 is further configured to send or receive the first information in the first time unit and send or receive the second information in the second time unit; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing.
In a possible implementation manner, the communication module 701 is further configured to send second capability information to the network device, where the second capability information is used to indicate that the terminal device has a capability of sending and/or receiving multiple pieces of information in parallel when the first TA and the second TA meet the condition.
In one possible embodiment, the first TA and the second TA meeting the condition includes one or more of the following: when the first TA and the second TA are the same, the first TA is smaller than or equal to a first threshold value; or, when the first TA and the second TA are the same, the sum of the first TA and the timing is less than or equal to the second threshold; or when the first TA and the second TA are different, the absolute value of the difference between the first TA and the second TA is smaller than or equal to the third threshold; or, when the first TA and the second TA are different, the absolute value of the difference between the first time and the second time is less than or equal to the fourth threshold; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing.
For a more detailed description of the communication module 701 and the processing module 702, reference may be made to the description of the terminal device in the above method embodiment, which is not described here.
In one embodiment, the communications apparatus shown in fig. 7 may be used to implement some or all of the functionality of the network device in the method embodiments described above with respect to fig. 4 or 6. The device may be a network device, a device in a network device, or a device that can be used in cooperation with a network device. The communication transpose can also be a system-on-chip, among other things.
For a more detailed description of the communication module 701 and the processing module 702, reference may be made to the related description of the network device in the method embodiment described in fig. 4 or fig. 6, which is not described here.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a communication device 800 provided in the present application, where the communication device 800 includes a processor 810 and an interface circuit 820. Processor 810 and interface circuit 820 are coupled to each other. It is understood that the interface circuit 820 may be a transceiver or an input-output interface. Optionally, the communication device 800 may further comprise a memory 830 for storing instructions to be executed by the processor 810 or for storing input data required by the processor 810 to execute instructions or for storing data generated after the processor 810 executes instructions.
When the communication device 800 is used to implement the method in the above-described method embodiment, the processor 810 may be used to perform the functions of the above-described processing module 702, and the interface circuit 820 may be used to perform the functions of the above-described communication module 701.
When the communication device is a chip applied to the network equipment, the network equipment chip realizes the functions of the network equipment in the embodiment of the method. The network device receives information from other modules (such as a radio frequency module or an antenna) in the network device, the information being sent to the network device by the terminal device; alternatively, the network device chip sends information to other modules (e.g., radio frequency modules or antennas) in the network device, which the network device sends to the terminal device.
When the communication device is a chip applied to the terminal equipment, the terminal equipment chip realizes the functions of the terminal equipment in the embodiment of the method. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent to the terminal device by the network device; alternatively, the terminal device chip sends information to other modules (e.g., radio frequency modules or antennas) in the terminal device, which is sent by the terminal device to the network device.
It is to be appreciated that the processor in embodiments of the present application may be a central processing unit (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.
The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (random access Memory, RAM), flash Memory, read-Only Memory (ROM), programmable ROM (PROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in an access network device or a terminal device. The processor and the storage medium may reside as discrete components in a network device or terminal device.
In the above embodiments, it may be implemented in whole or in part 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 programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program or instructions may be stored in or transmitted across a computer-readable storage medium. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as DVD; but also semiconductor media such as Solid State Disks (SSDs).
In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.
It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.
The embodiment of the application also provides a computer readable storage medium, in which computer executable instructions are stored, which when executed, cause a method executed by a terminal device or an access network device in the above method embodiment to be implemented.
The embodiments of the present application also provide a computer program product, which comprises a computer program, which when executed causes the method performed by the terminal device or the access network device in the above-mentioned method embodiments to be implemented.
The embodiment of the application also provides a communication system which comprises the terminal equipment and the access network equipment. The terminal device is configured to execute the method executed by the terminal device in the method embodiment. The access network device is configured to perform the method performed by the access network device in the method embodiment.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. For convenience and brevity of description, for example, reference may be made to the relevant descriptions of the method embodiments of the present application with respect to the functions and execution steps of the apparatus, devices, and methods provided in the embodiments of the present application, and reference may also be made to each other, combined, or cited between the method embodiments, and between the apparatus embodiments. In the event of no special description or logic conflict, terms and/or descriptions between the different embodiments are consistent and mutually exclusive and technical features in the different embodiments may be combined to form new embodiments according to their inherent logic relationships. It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone.
It should be understood that in embodiments of the present invention, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
The term "plurality" as used in the embodiments herein refers to two or more.
The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order division is made, nor is the number of the description objects in the embodiments of the present application specified, and no limitation in the embodiments of the present application should be construed.
It will be understood that in the embodiments of the present application, the terminal and/or the access network device may perform some or all of the steps in the embodiments of the present application, these steps or operations are merely examples, and in the embodiments of the present application, other operations or variations of the various operations may also be performed. Furthermore, the various steps may be performed in a different order presented in accordance with embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application may be performed.
Claims (14)
1. An information transmission method, the method comprising:
acquiring a first Timing Advance (TA) and a second TA;
Transmitting or receiving first information in a first time unit; or,
transmitting or receiving first information in a first time unit and transmitting or receiving second information in a second time unit;
wherein the time domain position of the first time unit is associated with the first TA and the time domain position of the second time unit is associated with the second TA; there is an overlap of the time domain position of the first time unit and the time domain position of the second time unit.
2. The method of claim 1, wherein the first information is transmitted or received at a first time unit; the method further comprises the steps of:
discarding the second information; or,
and discarding the information in the overlapping part of the second information.
3. The method of claim 1, wherein the first information is transmitted or received at a first time unit; the method further comprises the steps of:
transmitting or receiving the second information in a third time unit; or,
and transmitting or receiving information positioned in the overlapping part in the second information in the third time unit.
4. The method of claim 3, wherein the method comprises,
the third time unit is a default time unit; or,
The method further comprises the steps of:
and receiving indication information of the network equipment, wherein the indication information is used for indicating the third time unit.
5. The method of any of claims 1-4, wherein the transmitting or receiving the first information at a first time unit and the second information at a second time unit comprises:
when the terminal device has the capability to send and/or receive multiple information in parallel, then the first information is sent or received in a first time unit and the second information is sent or received in a second time unit.
6. The method of claim 5, wherein the method further comprises:
first capability information is sent to a network device, wherein the first capability information is used for indicating that the terminal device has the capability of sending and/or receiving a plurality of pieces of information in parallel.
7. The method of any one of claims 1-4, wherein the first TA is the same as the second TA; the sending or receiving the first information in the first time unit and the second information in the second time unit comprises:
when the first TA is smaller than or equal to a first threshold value, transmitting or receiving first information in a first time unit, and transmitting or receiving second information in a second time unit; or,
When the sum of the first TA and the timing is less than or equal to a second threshold, then the first information is sent or received in a first time unit and the second information is sent or received in a second time unit.
8. The method of any of claims 1-4, wherein the transmitting or receiving the first information at a first time unit and the second information at a second time unit comprises:
when the absolute value of the difference between the first TA and the second TA is smaller than or equal to a third threshold value, transmitting or receiving first information in a first time unit, and transmitting or receiving second information in a second time unit; or,
when the absolute value of the difference between the first time and the second time is smaller than or equal to a fourth threshold value, the first information is sent or received in the first time unit, and the second information is sent or received in the second time unit; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing.
9. The method according to claim 7 or 8, characterized in that the method further comprises:
And sending second capability information to the network equipment, wherein the second capability information is used for indicating that the terminal equipment has the capability of sending and/or receiving a plurality of pieces of information in parallel when the first TA and the second TA meet the condition.
10. The method of claim 9, the first TA and the second TA meeting a condition comprising one or more of:
when the first TA and the second TA are the same, the first TA is less than or equal to a first threshold; or,
when the first TA and the second TA are the same, the sum of the first TA and the timing is less than or equal to a second threshold; or,
when the first TA and the second TA are different, the absolute value of the difference between the first TA and the second TA is less than or equal to a third threshold; or,
when the first TA and the second TA are different, the absolute value of the difference value between the first time and the second time is smaller than or equal to a fourth threshold value; the first TA corresponds to a first timing, the second TA corresponds to a second timing, the first time is the sum of the first TA and the first timing, and the second time is the sum of the second TA and the second timing.
11. A communication device comprising means or units for performing the method of any of claims 1-10.
12. A communication device comprising a processor and interface circuitry for receiving signals from other communication devices than the communication device and transmitting signals from the processor to the processor or sending signals from the processor to other communication devices than the communication device, the processor being configured to implement the method of any of claims 1-10 by logic circuitry or executing code instructions.
13. A computer readable storage medium, characterized in that the storage medium has stored therein a computer program or instructions which, when executed by a communication device, implement the method of any of claims 1-10.
14. A computer program product, characterized in that the computer is caused to perform the method according to any of claims 1-10 when the computer reads and executes the computer program product.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210970358.1A CN117676789A (en) | 2022-08-12 | 2022-08-12 | Information transmission method and communication device |
| PCT/CN2023/111863 WO2024032638A1 (en) | 2022-08-12 | 2023-08-09 | Information transmission method and communication apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210970358.1A CN117676789A (en) | 2022-08-12 | 2022-08-12 | Information transmission method and communication device |
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| CN117676789A true CN117676789A (en) | 2024-03-08 |
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| CN202210970358.1A Pending CN117676789A (en) | 2022-08-12 | 2022-08-12 | Information transmission method and communication device |
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| US9521632B2 (en) * | 2011-08-15 | 2016-12-13 | Google Technology Holdings LLC | Power allocation for overlapping transmission when multiple timing advances are used |
| US11284357B2 (en) * | 2017-02-02 | 2022-03-22 | Apple Inc. | Power headroom reporting for shortened transmission time intervals |
| EP3609247A4 (en) * | 2017-05-03 | 2020-05-06 | LG Electronics Inc. -1- | Method and apparatus for reporting power headroom |
| US10772061B2 (en) * | 2017-11-17 | 2020-09-08 | Qualcomm Incorporated | Handling overlapped communications |
| WO2020065590A1 (en) * | 2018-09-28 | 2020-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Mobile terminal with multiple timing advances |
| CN112740808B (en) * | 2019-04-15 | 2023-08-29 | Oppo广东移动通信有限公司 | Message transmission method and device |
| CN113812202B (en) * | 2020-04-16 | 2023-11-17 | 华为技术有限公司 | Communication method and device |
| CN112075118A (en) * | 2020-08-05 | 2020-12-11 | 北京小米移动软件有限公司 | Random access method, device, equipment and storage medium |
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