Communication method and device

Abstract

The invention discloses a communication method and device, relates to the technical field of communication, and can provide a time-frequency resource mapping mode of a channel measurement reference signal and improve the reliability and efficiency of information transmission. The method comprises the following steps: mapping a first channel measurement reference signal of a first antenna port to a first time-frequency resource, and mapping a second channel measurement reference signal of a second antenna port to the first time-frequency resource; wherein the first time frequency resource corresponds to a time domain symbol and a carrier, and the carrier comprises continuous 157 subcarriers; or mapping a first channel measurement reference signal of the first antenna port to a second time-frequency resource, and mapping a second channel measurement reference signal of the second antenna port to the second time-frequency resource; wherein the second time frequency resource corresponds to two time domain symbols and one carrier, and the carrier comprises continuous 157 subcarriers; and sending the first channel measurement reference signal through the first antenna port, and sending the second channel measurement reference signal through the second antenna port.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a communication method and device. BACKGROUND

[0002] In a communication system, two communication parties can send reference signals (RSs) to each other through respective antenna ports. The reference signals carry channel state information (CSI) between the respective antenna ports of the two parties after being transmitted through a wireless channel. In this way, a device (or receiver device) receiving the reference signals can measure the CSI through the reference signals, and adjust and optimize the communication process according to the channel measurement results, or extract key information from the channel measurement results and feed back to a device (or transmitter device) sending the reference signals.

[0003] In the above-mentioned reference signal sending process, how to reasonably design the time-frequency resource mapping manner of the reference signals to improve the reliability and efficiency of information transmission becomes a technical problem to be solved. SUMMARY

[0004] The present application provides a communication method and device, which can provide a time-frequency resource mapping manner of reference signals, and improve the reliability and efficiency of information transmission.

[0005] In a first aspect, the present application provides a communication method, which can be executed by a transmitter device. In the absence of special description, the "transmitter device" in the present application can refer to the transmitter device itself, a component (such as a processor, a radio frequency unit, a chip, or a chip system) in the transmitter device, or a logic module or software capable of realizing all or part of the functions of the transmitter device. The method comprises: mapping a first channel measurement reference signal of a first antenna port to a first time-frequency resource, and mapping a second channel measurement reference signal of a second antenna port to the first time-frequency resource; wherein the first time-frequency resource corresponds to one time domain symbol and one carrier, and the carrier includes 157 consecutive subcarriers; or mapping the first channel measurement reference signal of the first antenna port to a second time-frequency resource, and mapping the second channel measurement reference signal of the second antenna port to the second time-frequency resource; wherein the second time-frequency resource corresponds to two time domain symbols and one carrier, and the carrier includes 157 consecutive subcarriers; sending the first channel measurement reference signal through the first antenna port, and sending the second channel measurement reference signal through the second antenna port.

[0006] Based on the first aspect, the embodiments of the present application provide two mapping manners of time-frequency resources. In the two mapping manners, the carrier includes 157 continuous subcarriers, which can be adapted to the re-planned time-frequency resources, and the reliability and efficiency of information transmission are improved. In addition, in the first mapping manner, the first time-frequency resource corresponds to one time domain symbol and one carrier, that is, the channel measurement reference signal of the two antenna ports occupies all the subcarriers of one time domain symbol. Compared with the channel measurement reference signal of the two antenna ports occupying all the subcarriers of two time domain symbols, the time-frequency resource overhead can be reduced on the basis of ensuring the channel measurement performance, and the communication efficiency is improved. It is a relatively flexible time-frequency resource mapping manner which can balance the channel measurement performance and the time-frequency resource overhead.

[0007] In a possible design, the first antenna port and the second antenna port are two antenna ports of the sending-end device.

[0008] Based on the possible design, in the case that the sending-end device includes two antenna ports, the first antenna port and the second antenna port are the two antenna ports of the sending-end device. In the case that the sending-end device includes at least three antenna ports, the first antenna port and the second antenna port can be any two antenna ports of the at least three antenna ports of the sending-end device.

[0009] In a possible design, the 157 subcarriers correspond to indexes 0-156 in the order of frequency from low to high in sequence; wherein, the subcarrier with index 78 is a direct current subcarrier, and the remaining subcarriers are effective subcarriers.

[0010] Based on the possible design, with the evolution and development of the star flash wireless communication technology, the star flash wireless communication technology standard will re-plan the time-frequency resources, for example, one carrier can be composed of a larger number of subcarriers, such as 157 subcarriers, which provides a feasible scheme for the redesign of the carrier.

[0011] In a possible design, the complex value of the first channel measurement reference signal and the second channel measurement reference signal mapped on the first time-frequency resource is satisfies:

[0012]

[0013] wherein, n represents the index of the radio frame where the first time-frequency resource is located, l represents the index of the time domain symbol corresponding to the first time-frequency resource, k represents the index of the subcarrier of the carrier corresponding to the first time-frequency resource, p represents the index of the antenna port, and α RS represents the power factor of the channel measurement reference signal, and rn,l(k) represents the kth value of the pseudo-random sequence.

[0014] Based on this possible design, the transmitting device can perform time-frequency resource mapping of the channel measurement reference signal based on the above formula, which can be adapted to the re-planned time-frequency resources, thereby improving the reliability and efficiency of information transmission.

[0015] In one possible design, the value of Δ(p) at the first antenna port is 0, and the value of Δ(p) at the second antenna port is 1.

[0016] In one possible design, α RS The range of values ​​is

[0017] Based on this possible design, when α RS When the value of is greater than 1, the energy on one subcarrier can be distributed to another subcarrier to achieve the purpose of power boosting.

[0018] In one possible design, the first channel measurement reference signal is mapped to an index in the first time-frequency resource. The complex value of α on the effective subcarrier RS ·rn,l(k).

[0019] In one possible design, the first channel measurement reference signal is mapped to a complex value α on the effective subcarriers of the first time-frequency resource with index k = {0, 2, 4, ..., 74, 76, 79, 81, 83, ..., 153, 155}. RS ·rnl(k).

[0020] In one possible design, the first channel measurement reference signal is mapped in the first time-frequency resource except for the index. The complex value on the effective subcarriers other than the effective subcarriers is 0.

[0021] In one possible design, the complex value of the first channel measurement reference signal mapped to the effective subcarriers of the first time-frequency resource index k = {1,3,5,…,75,77,80,82,84,…,154,156} is 0.

[0022] In one possible design, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier in the first time-frequency resource is 0.

[0023] In one possible design, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier at index k = {78} in the first time-frequency resource is 0.

[0024] In one possible design, the second channel measurement reference signal is mapped to an index in the first time-frequency resource. The complex value of α on the effective subcarrierRS ·rn,l(k).

[0025] In one possible design, the second channel measurement reference signal is mapped to a complex value α on the effective subcarriers of the first time-frequency resource with index k = {1,3,5,…,75,77,80,82,84,…,154,156}. RS ·rn,l(k).

[0026] In one possible design, the second channel measurement reference signal is mapped to the first time-frequency resource except for the index. The complex value on the effective subcarriers other than the effective subcarriers is 0.

[0027] In one possible design, the second channel measurement reference signal is mapped to a complex value of 0 on the effective subcarriers of the first time-frequency resource index k = {0, 2, 4, ..., 74, 76, 79, 81, 83, ..., 153, 155}.

[0028] In one possible design, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier in the first time-frequency resource is 0.

[0029] In one possible design, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier at index k = {78} in the first time-frequency resource is 0.

[0030] Based on the above-mentioned various possible designs, when the first channel measurement reference signal and the second channel measurement reference signal are mapped to complex values ​​in the resource units corresponding to the first time-frequency resource, for any resource unit other than the resource unit corresponding to the DC subcarrier, the complex value mapped by the first channel measurement reference signal in that resource unit is non-zero, and the complex value mapped by the second channel measurement reference signal in that resource unit is zero; or, the complex value mapped by the first channel measurement reference signal in that resource unit is zero, and the complex value mapped by the second channel measurement reference signal in that resource unit is non-zero. This mapping method can also be described as follows: the channel measurement reference signals of the two antenna ports reuse the time-domain symbol of the first time-frequency resource in a frequency-division manner.

[0031] In one possible design, the two time-domain symbols corresponding to the second time-frequency resource are different time-domain symbols of the same radio frame; or, the two time-domain symbols corresponding to the second time-frequency resource are different time-domain symbols of different radio frames.

[0032] Based on this possible design, a feasible solution is provided for the design of the second time-frequency resource.

[0033] In one possible design, the first channel measurement reference signal and the second channel measurement reference signal are mapped onto complex values ​​on the second time-frequency resource. Satisfy:

[0034]

[0035] τ = l + l' and l' ∈ {0, σ}.

[0036] wherein n represents an index of a radio frame in which the second time-frequency resource is located, τ = l + l', l' ∈ {0, σ}, l represents an index of a first time-domain symbol corresponding to the second time-frequency resource, σ represents a difference between indexes of two time-domain symbols corresponding to the second time-frequency resource, σ is a non-zero integer, k represents an index of a subcarrier of a carrier corresponding to the second time-frequency resource, p represents an index of an antenna port, and rn,τ(k) represents a kth value of a pseudo-random sequence.

[0037] Based on the possible design, the sending end device can perform time-frequency resource mapping of the channel measurement reference signal based on the above formula, can adapt to the re-planned time-frequency resource, and improve the reliability and efficiency of information transmission.

[0038] In a possible design, the value of Σ(p) of the first antenna port is 0; and the value of Σ(p) of the second antenna port is σ.

[0039] In a possible design, the first indication information is acquired; wherein the first indication information is used to indicate the value of σ; or the value of σ is predefined.

[0040] In a possible design, the value range of σ is [-15, 20].

[0041] Based on the above two possible designs, the relative positions of the two time-domain symbols of the second time-frequency resource can be adjusted by the parameter σ.

[0042] In a possible design, the complex value of the first channel measurement reference signal mapped on all valid subcarriers of a carrier of the first time-domain symbol of the second time-frequency resource is rn,τ(k).

[0043] In a possible design, the complex value of the first channel measurement reference signal mapped on valid subcarriers of the carrier of the first time-domain symbol of the second time-frequency resource with the index k = {0, 1, 2, …, 76, 77, 79, 80, 81, …, 155, 156} is rn,τ(k).

[0044] In a possible design, the complex value of the first channel measurement reference signal mapped on all valid subcarriers of a carrier of the second time-domain symbol of the second time-frequency resource is 0.

[0045] In one possible design, the complex value of the first channel measurement reference signal mapped onto the carrier of the second time-domain symbol of the second time-frequency resource is 0 on the effective subcarrier of index k = {0,1,2,…,76,77,79,80,81,…,155,156}.

[0046] In one possible design, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier of the two time-domain symbols of the second time-frequency resource is 0.

[0047] In one possible design, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier of index k = {78} in the carrier of the first time-domain symbol of the second time-frequency resource is 0; the complex value of the first channel measurement reference signal mapped onto the DC subcarrier of index k = {78} in the carrier of the second time-domain symbol of the second time-frequency resource is 0.

[0048] In one possible design, the complex value of the second channel measurement reference signal mapped onto all effective subcarriers of the second time-domain symbol of the second time-frequency resource is rn,τ(k).

[0049] In one possible design, the complex value of the second channel measurement reference signal mapped onto the effective subcarrier of the second time-domain symbol of the second time-frequency resource is rn,τ(k).

[0050] In one possible design, the complex value of the second channel measurement reference signal mapped onto all effective subcarriers of the carrier of the first time-domain symbol of the second time-frequency resource is 0.

[0051] In one possible design, the complex value of the second channel measurement reference signal mapped on the effective subcarrier of the carrier of the first time-domain symbol of the second time-frequency resource is 0, and the index k = {0,1,2,…,76,77,79,80,81,…,155,156} is 0.

[0052] In one possible design, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier of the two time-domain symbols of the second time-frequency resource is 0.

[0053] In one possible design, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} in the carrier of the first time-domain symbol of the second time-frequency resource is 0; the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} in the carrier of the second time-domain symbol of the second time-frequency resource is 0.

[0054] Based on the above-mentioned various possible designs, when the first channel measurement reference signal and the second channel measurement reference signal are mapped to complex values ​​in the resource units corresponding to the second time-frequency resource, for any resource unit other than the resource unit corresponding to the DC subcarrier, the complex value mapped by the first channel measurement reference signal in the resource unit corresponding to one time-domain symbol of the two time-domain symbols is non-zero, and the complex value mapped by the resource unit corresponding to the resource unit corresponding to the other time-domain symbol is 0. The complex value mapped by the second channel measurement reference signal in the resource unit corresponding to the other time-domain symbol is non-zero, and the complex value mapped by the resource unit corresponding to the resource unit corresponding to the first time-domain symbol is 0. Alternatively, it can be described that each antenna port uses all 156 effective subcarriers of one time-domain symbol in the second time-frequency resource to map the complex value of its channel measurement reference signal (different antenna ports use different time-domain symbols), and also sets the complex values ​​mapped by all effective subcarriers of the other time-domain symbol to 0. This second mapping method can also be described as: the channel measurement reference signals of the two antenna ports reuse the carriers of the second time-frequency resource in a time-division manner.

[0055] In one possible design, second indication information is obtained; wherein the second indication information is used to indicate a first mapping method, or the second indication information is used to indicate a second mapping method; the first mapping method is to map the channel measurement reference signals of the two antenna ports onto a first time-frequency resource, and the second mapping method is to map the channel measurement reference signals of the two antenna ports onto a second time-frequency resource; when the second indication information is used to indicate the first mapping method, the first channel measurement reference signal of the first antenna port is mapped onto the first time-frequency resource, and the second channel measurement reference signal of the second antenna port is mapped onto the first time-frequency resource; or, when the second indication information is used to indicate the second mapping method, the first channel measurement reference signal of the first antenna port is mapped onto the second time-frequency resource, and the second channel measurement reference signal of the second antenna port is mapped onto the second time-frequency resource.

[0056] Based on this possible design, the transmitting device can obtain the second indication information and determine whether to use the first mapping method or the second mapping method to perform time-frequency resource mapping of the channel measurement reference signal of the two antenna ports, thereby realizing flexible switching between the first mapping method and the second mapping method.

[0057] Secondly, this application provides a communication device for transmitting starburst signals. This communication device can be applied to the transmitting device described in the first aspect to achieve the functions performed by the transmitting device. The communication device can be the transmitting device itself, or it can be a chip, chip system, or system-on-a-chip of the transmitting device. The communication device can execute the functions performed by the transmitting device through hardware, or it can execute corresponding software through hardware. The hardware or software includes one or more modules corresponding to the aforementioned functions. For example: a module for mapping a first channel measurement reference signal from a first antenna port to a first time-frequency resource, and mapping a second channel measurement reference signal from a second antenna port to a first time-frequency resource; wherein the first time-frequency resource corresponds to one time-domain symbol and one carrier, and the carrier includes 157 consecutive subcarriers; or, a module for mapping a first channel measurement reference signal from a first antenna port to a second time-frequency resource, and mapping a second channel measurement reference signal from a second antenna port to a second time-frequency resource; wherein the second time-frequency resource corresponds to two time-domain symbols and one carrier, and the carrier includes 157 consecutive subcarriers; a module for transmitting a first channel measurement reference signal through a first antenna port and transmitting a second channel measurement reference signal through a second antenna port.

[0058] In one possible design, the communication device further includes: a module for acquiring second indication information; wherein the second indication information is used to indicate a first mapping method, or the second indication information is used to indicate a second mapping method; the first mapping method is to map the channel measurement reference signals of the two antenna ports onto a first time-frequency resource, and the second mapping method is to map the channel measurement reference signals of the two antenna ports onto a second time-frequency resource; a module for mapping the first channel measurement reference signal of the first antenna port onto the first time-frequency resource and the second channel measurement reference signal of the second antenna port onto the first time-frequency resource when the second indication information indicates the first mapping method; or, a module for mapping the first channel measurement reference signal of the first antenna port onto the second time-frequency resource and the second channel measurement reference signal of the second antenna port onto the second time-frequency resource when the second indication information indicates the second mapping method.

[0059] It is understood that the descriptions of the first antenna port, the first channel measurement reference signal, the second antenna port, the second channel measurement reference signal, etc. in the second aspect can refer to the relevant descriptions in the first aspect or the possible designs of the first aspect, and will not be repeated here.

[0060] In one possible design, the communication device further includes a Bluetooth module for implementing Bluetooth signal transmission and / or a Wi-Fi module for implementing Wi-Fi signal transmission. One or more of the StarScan module, Bluetooth module, or Wi-Fi module share at least one of the following: a radio frequency (RF) unit, a modem unit, a media access control (MAC) unit, and a central processing unit (CPU).

[0061] In one possible design, the StarSignal module and the Wi-Fi module for implementing Wi-Fi signal transmission are located in different subsystems of the communication device. The StarSignal module subsystem and the Wi-Fi module subsystem are integrated in the communication device with at least one of the following: Bluetooth system, StarSignal Low Energy (SLE) system, Global Navigation Satellite System (GNSS), Always On system, Power Management Unit (PMU), Clock Management Unit (CMU), Flash memory, application system, and audio system.

[0062] In one possible design, the StarSignal module and the Wi-Fi module for implementing Wi-Fi signal transmission are located in the same subsystem of the communication device. The subsystems of the StarSignal module and the Wi-Fi module are integrated into the communication device with at least one of the following: Bluetooth system, StarSignal Low Energy (SLE) system, Global Navigation Satellite System (GNSS), Always On system, Power Management Unit (PMU), Clock Management Unit (CMU), Flash memory, application system, and audio system.

[0063] In one possible design, the communication device further includes a Bluetooth module for implementing Bluetooth signal transmission and / or a Wi-Fi module for implementing Wi-Fi signal transmission. At least one of the Bluetooth module or Wi-Fi module and the star flash module coexist and communicate with each other through different antennas. The coexistence strategy includes at least one of the following: frequency division multiplexing, code division multiplexing, time division multiplexing, channel avoidance, or aggregation scheduling.

[0064] In one possible design, the communication device further includes a Bluetooth module for implementing Bluetooth signal transmission and / or a Wi-Fi module for implementing Wi-Fi signal transmission. At least one of the Bluetooth module or Wi-Fi module coexists and communicates with the star flash module through the same antenna. The coexistence strategy includes at least one of the following: frequency division multiplexing, code division multiplexing, time division multiplexing, software static strategy, or message transmission arbitration PTA strategy.

[0065] Thirdly, embodiments of this application provide a communication device, which includes one or more processors; the one or more processors are configured to run computer programs or instructions, such that when the one or more processors execute the computer programs or instructions, the communication method described in the first aspect is performed.

[0066] In one possible design, the communication device further includes one or more memories coupled to one or more processors, the memories used to store the aforementioned computer programs or instructions. In one possible implementation, the memories are located outside the communication device. In another possible implementation, the memories are located inside the communication device. In embodiments of this application, the processor and memory may also be integrated into a single device, i.e., the processor and memory may be integrated together. In one possible implementation, the communication device further includes a transceiver for receiving and / or transmitting information.

[0067] In one possible design, the communication device further includes one or more communication interfaces coupled to one or more processors, and the communication interfaces are used to communicate with other modules outside the communication device.

[0068] Fourthly, embodiments of this application provide a communication device, which includes an interface circuit and a logic circuit; the interface circuit is used to input and / or output information; the logic circuit is used to execute the communication method as described in the first aspect, and to process and / or generate information based on the information.

[0069] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer instructions or programs that, when executed on a computer, cause the communication method described in the first aspect to be performed.

[0070] In a sixth aspect, embodiments of this application provide a computer program product containing computer instructions that, when run on a computer, causes the communication method described in the first aspect to be executed.

[0071] In a seventh aspect, embodiments of this application provide a computer program that, when run on a computer, causes the communication method described in the first aspect to be executed.

[0072] Eighthly, embodiments of this application provide a chip including: a processor coupled to a memory for storing programs or instructions, wherein when the program or instructions are executed by the processor, the communication method described in the first aspect is executed.

[0073] The technical effects of any of the design methods in aspects three through eight can be found in the technical effects of aspect one above, and will not be elaborated upon further.

[0074] Ninthly, embodiments of this application provide a communication system that may include communication means for performing the methods described in the first aspect or any possible design of the first aspect. Attached Figure Description

[0075] Figure 1 A schematic diagram of a communication system provided in an embodiment of this application;

[0076] Figure 2 A flowchart illustrating a communication method provided in an embodiment of this application;

[0077] Figure 3 A schematic diagram of a superframe provided in an embodiment of this application;

[0078] Figure 4 A schematic diagram of a carrier wave provided for an embodiment of this application;

[0079] Figure 5 A schematic diagram of a channel measurement reference signal provided in an embodiment of this application;

[0080] Figure 6 A schematic diagram of a channel measurement reference signal provided in an embodiment of this application;

[0081] Figure 7 A schematic diagram of a channel measurement reference signal provided in an embodiment of this application;

[0082] Figure 8 A schematic diagram of a chip architecture provided in an embodiment of this application;

[0083] Figure 9 This is a schematic diagram of another chip architecture provided in an embodiment of this application;

[0084] Figure 10 This is another schematic diagram of a chip architecture provided in an embodiment of this application;

[0085] Figure 11 This is another schematic diagram of a chip architecture provided in an embodiment of this application;

[0086] Figure 12 A schematic diagram of a chip module framework provided in an embodiment of this application;

[0087] Figure 13 This is a schematic diagram of another chip module framework provided in an embodiment of this application;

[0088] Figure 14 A schematic diagram illustrating the framework of a software static strategy provided in an embodiment of this application;

[0089] Figure 15 A schematic diagram illustrating the framework of a software static strategy provided in an embodiment of this application;

[0090] Figure 16 A schematic diagram illustrating the framework of a hardware arbitration time-division (PTA) strategy provided in an embodiment of this application;

[0091] Figure 17 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0092] Figure 18 This is a schematic diagram of the composition of a communication device provided in an embodiment of this application. Detailed Implementation

[0093] Before describing the embodiments of this application, the technical terms involved in the embodiments of this application will be described.

[0094] Cellular and short-range wireless communication systems mostly employ orthogonal frequency-division multiplexing (OFDM) and multiple-input multiple-output (MIMO) technologies. OFDM can effectively resist multipath interference and reduce the impact of frequency-selective fading. MIMO multi-antenna technology can significantly improve system capacity and enhance data transmission reliability.

[0095] To measure channel quality or channel state information (CSI) in a wireless communication system, the communicating parties can transmit reference signals (RS) to each other at their respective antenna ports. These reference signals, after being transmitted through the wireless channel, carry the CSI between the antenna ports of both parties. The receiving device (or receiver) can then measure the CSI using the reference signal and adjust and optimize the communication process based on the channel measurement results, or extract key information from the channel measurement results and feed it back to the transmitting device (or transmitter).

[0096] In this context, an antenna port, or simply a port, is a logical concept. Each antenna port corresponds to a time-frequency resource grid and carries a reference signal. The transmission channel estimated from one reference signal at an antenna port can be used to infer the transmission channel experienced by another symbol at the same antenna port. An antenna port can correspond to a single transmit link, or an equivalent transmit link resulting from the merging of multiple transmit links; conversely, an antenna port can correspond to a single receive link, or an equivalent receive link resulting from the merging of multiple receive links.

[0097] For example, an antenna port can be defined based on the following characteristic: the transmission channel of another symbol on the same antenna port can be inferred from the transmission channel of one symbol (or time-domain symbol) on the antenna port. In this application, the number or index of any antenna port among multiple antenna ports of the same device can be represented as p, and its value can start from 0, i.e., p = 0, 1, ..., P-1, where P is the total number of the multiple antenna ports. In practical applications, the number or index of the P antenna ports can also be arbitrarily selected, and this application embodiment does not impose specific restrictions on this.

[0098] The reference signal may be the same or different in different wireless communication systems. For example, in 5G new radio (NR) and other cellular wireless communication standards, it may be a channel state information reference signal (CSI-RS) or a sounding reference signal (SRS); in Wi-Fi short-range wireless communication standards, it may include a sounding physical layer protocol data unit (PPDU). It is understood that in this application embodiment, the reference signals used for channel measurement in different communication systems can be collectively referred to as channel measurement reference signals.

[0099] In the process of transmitting the aforementioned reference signal, how to reasonably design the time-frequency resource mapping method of the reference signal in order to improve the reliability and efficiency of information transmission has become an urgent technical problem to be solved.

[0100] The following section uses a star-flash wireless communication system as an example to introduce and explain the time-frequency resource mapping method of the above-mentioned reference signal.

[0101] Among them, SparkLink wireless communication technology is a new generation of short-range wireless communication technology with a fully original stack, and its related standards are developed by the international SparkLink Alliance. It provides two air interface access technologies: SparkLink Basic (SLB) and SparkLink Low Energy (SLE). The technical content of SLB is specified by the industry standard YD / T 4007-2022 "Technical Requirements and Test Methods for Vehicle-Mounted Short-Range Wireless Communication".

[0102] In the industry standard YD / T 4007-2022, a superframe has a duration of 1 ms and contains 48 radio frames. These 48 radio frames are numbered (or indexed) sequentially from front to back in time as: #0, #1, ..., #47 (the "#" mark before a number or symbol emphasizes that the number or symbol is a number or index value). A carrier consists of 39 consecutive subcarriers, which are numbered (or indexed) sequentially from low to high frequency as: #0, #1, ..., #38. Among them, subcarrier #19 is a direct current (DC) subcarrier. The remaining 38 subcarriers, excluding the DC subcarrier, are called active subcarriers.

[0103] For each antenna port, a frequency domain subcarrier consisting of 39 subcarriers can be defined on each radio frame of each carrier. The resource grid consists of time-domain symbols. Each element in a resource grid at antenna port #p is called a resource element (RE). Each resource element is indexed by a unique index (k, l)p of the resource grid, where k and l are the frequency-domain and time-domain indices, respectively, and k = 0, 1, ..., 38. The transmitting device of the reference signal maps a complex value to each resource unit (k,l)p.

[0104] For multi-antenna-port scenarios, if the radio transmission resources used by the channel measurement reference signal of antenna port #p0 include resource elements in radio frame #n of a certain superframe... Then the complex value mapped by antenna port #p to resource element (k,l)p in radio frame #n of this superframe for:

[0105]

[0106] Wherein, rn,l(k) is a pseudo-random sequence known to both the transmitting and receiving devices of the channel measurement reference signal, generally a pseudo-random quadrature phase shift keying (QPSK) sequence.

[0107] In other words, the specific configuration of the channel measurement reference signal for the two antenna ports in the Starflash wireless communication system is as follows: the channel measurement reference signal for the two antenna ports occupies all frequency subcarriers of two time-domain symbols. Each antenna port uses all 38 valid subcarriers of one time-domain symbol in its respective resource grid to map the complex value of its channel measurement reference signal (different antenna ports use different time-domain symbols), and also sets the complex values ​​mapped to all valid subcarriers of the other time-domain symbol to 0. Meanwhile, subcarrier #19 is a DC subcarrier, and its mapped complex value is always 0. Therefore, the time-frequency resource overhead of the channel measurement reference signal for these two antenna ports is: all subcarriers of two time-domain symbols.

[0108] With the evolution and development of Starlight wireless communication technology, the Starlight wireless communication technology standard will re-plan the time-frequency resources. For example, a superframe may consist of fewer radio frames, such as a superframe containing 8 radio frames; similarly, a carrier may consist of more subcarriers, such as a carrier containing 157 consecutive subcarriers. The time-frequency resource mapping method for the channel measurement reference signal at the two antenna ports described above is not suitable for the re-planned time-frequency resources. A new time-frequency resource mapping method for the channel measurement reference signal at the two antenna ports that is adapted to the re-planned time-frequency resources should be designed.

[0109] In addition, the channel measurement reference signals of the two antenna ports occupy all subcarriers of two time-domain symbols. Although this can ensure channel measurement performance well, the time-frequency resource overhead is large, the communication efficiency is low, and there is a lack of flexible configuration schemes that take into account both channel measurement performance and time-frequency resource overhead.

[0110] Based on this, embodiments of this application provide a communication method in which a transmitting device can map a first channel measurement reference signal from a first antenna port onto a first time-frequency resource, and map a second channel measurement reference signal from a second antenna port onto the first time-frequency resource; transmit the first channel measurement reference signal through the first antenna port, and transmit the second channel measurement reference signal through the second antenna port. The first time-frequency resource corresponds to one time-domain symbol and one carrier, the carrier comprising 157 consecutive subcarriers. Alternatively, the transmitting device can map the first channel measurement reference signal from the first antenna port onto a second time-frequency resource, and map the second channel measurement reference signal from the second antenna port onto the second time-frequency resource; transmit the first channel measurement reference signal through the first antenna port, and transmit the second channel measurement reference signal through the second antenna port. The second time-frequency resource corresponds to two time-domain symbols and one carrier, the carrier comprising 157 consecutive subcarriers.

[0111] This application provides two mapping methods for time-frequency resources. The first mapping method maps the channel measurement reference signals from two antenna ports onto a first time-frequency resource, and the second mapping method maps the channel measurement reference signals from two antenna ports onto a second time-frequency resource. In both mapping methods, the carrier comprises 157 consecutive subcarriers, which can be adapted to the re-planned time-frequency resources, improving the reliability and efficiency of information transmission.

[0112] In addition, in the first mapping method, the first time-frequency resource corresponds to one time-domain symbol and one carrier. That is, the channel measurement reference signal of the two antenna ports occupies all the subcarriers of one time-domain symbol. Compared with the channel measurement reference signal of the two antenna ports occupying all the subcarriers of two time-domain symbols, it can reduce the time-frequency resource overhead and improve communication efficiency while ensuring channel measurement performance. It is a relatively flexible time-frequency resource mapping method that can take into account both channel measurement performance and time-frequency resource overhead.

[0113] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0114] The communication method provided in this application can be used in any communication system, such as a third-generation partnership project (3GPP) communication system, for example, a long-term evolution (LTE) system, or a 5G mobile communication system, a hybrid LTE and 5G network system, an NR system, an NR vehicle-to-everything (V2X) system, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT) system, a narrow band Internet of Things (NB-IoT) system, enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), enhanced machine-type communication (eMTC), and various types of future communication systems. It can also be a non-terrestrial network (NTN) system (such as a satellite communication system), a non-3GPP communication system, etc., without limitation.

[0115] The communication method provided in this application can also be applied to, but is not limited to, short-range wireless communication systems and wireless communication systems that support longer-distance transmission (such as 1-18km, or over 18km) (such as the future StarSpark wireless communication system). The short-range wireless communication system can include short-range wireless communication technology (also known as StarSpark 1.0 technology), which has advantages such as ultra-low latency, ultra-high reliability, and precise synchronization, and is suitable for applications in smart cars, smart homes, smart terminals, and smart manufacturing. For example, applications in smart car scenarios include: immersive in-vehicle sound field & noise reduction, wireless interactive projection, and 360-degree panoramic surround view, which can achieve an immersive interactive experience and improve vehicle safety.

[0116] Wireless communication systems that support longer transmission distances (e.g., 1–18 km) mainly include future StarSpark wireless communication systems, such as StarSpark 2.0 and StarSpark 3.0 wireless communication systems. They are not only suitable for communication scenarios with low latency requirements, such as the aforementioned vehicle communication and industrial control scenarios, but also for communication scenarios with low latency requirements.

[0117] In some possible implementations, the above-mentioned communication system may be used in conjunction with a mobile communication system, such as, but not limited to, fourth-generation (4G) communication systems (e.g., LTE systems), 5G communication systems (e.g., NR systems), and future mobile communication systems.

[0118] The following is based on Figure 1 Taking an example, the communication system provided in the embodiments of this application will be described.

[0119] Figure 1 A schematic diagram of a communication system provided in an embodiment of this application is shown below. Figure 1 As shown, the communication system may include at least one terminal node (T node) and at least one grant node (G node).

[0120] For example, Figure 1 The illustrated communication system can be a wireless short-range communication system.

[0121] In this embodiment, the management node can be a node in the wireless short-range communication system that has resource scheduling capabilities and sends control information such as resource management information and / or data scheduling information. The terminal node can be a node in the wireless short-range communication system that receives the control information such as resource management information and / or data scheduling information sent by the management node, and performs data transmission or reception based on the control information. For ease of description, the short-range protocol in the wireless short-range communication system is referred to as the Star Flash protocol in this embodiment.

[0122] In the StarScan protocol corresponding to StarScan technology, there are uplink and downlink transmissions between the management node and the terminal nodes. Uplink transmission is achieved through the T-link, which is the link between the terminal node and the management node, also known as the uplink. This link can carry data channels, access channels, feedback signals, etc., from the terminal node to the management node. The symbol used for T-link transmission is called the T symbol. Downlink transmission is achieved through the G-link, which is the link between the management node and the terminal nodes, also known as the downlink. This link can carry data channels, control channels, broadcast channels, synchronization signals, etc., from the management node to the terminal nodes. The symbol used for G-link transmission is called the G symbol.

[0123] A communication domain refers to the G-link and T-link resources of a management node in a communication system. A communication domain can also be referred to as a cell.

[0124] In this embodiment, the communication device has wireless communication capabilities and can be configured with multiple antennas. These multiple antennas may include at least one transmitting antenna for transmitting signals and at least one receiving antenna for receiving signals. Additionally, each communication device also includes a transmitter chain and a receiver chain. Those skilled in the art will understand that these chains may include multiple components related to signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, or antennas). The communication device can be a management node or a terminal node, and this is not limited.

[0125] in, Figure 1The management node is located on the network side of the aforementioned communication system. It assists terminal nodes in achieving wireless access and is a device with wireless transceiver capabilities, or a chip or chip system that can be installed on such a device. This management node includes, but is not limited to: network devices, access network devices, access network nodes, radio access network (RAN) nodes, RAN entities or access nodes, base stations, evolved NodeBs (eNodeBs), access points (APs), transmission reception points (TRPs or transmission points (TPs), next generation NodeBs (gNBs), future base stations in future mobile communication systems, base stations in future mobile communication systems, or access points (APs) in wireless fidelity (Wi-Fi) systems. The management node can be a macro base station, micro base station, indoor station, relay node, donor node, open radio access network (ORAN), or a wireless controller in a centralized radio access network (CRAN) scenario. Management nodes can also be one or a group of antenna panels (including multiple antenna panels) in a 5G base station. Alternatively, they can be network nodes constituting a gNB, TRP, TP, or transmission measurement function (TMF), such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), a radio unit (RU), or a roadside unit (RSU) with base station functionality. Optionally, management nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, the management node in vehicle-to-everything (V2X) technology can be an RSU. Optionally, management nodes can also be control units in autonomous driving, central controllers in smart factories / smart homes, handheld or automatic remote controls for flying equipment, etc. Optionally, management nodes can also be control devices such as central control or control panels, such as drone controllers or control units in industrial control.All or part of the functions of the management node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform). The management node in this application can also be a logical node, logical module, or software capable of implementing all or part of the management node functions.

[0126] In this application embodiment, the form of the management node is not limited. The device used to implement the function of the management node can be the management node itself; it can also be a device that supports the management node in implementing this function, such as a chip system. The device can be installed in the management node or used in conjunction with the management node.

[0127] in, Figure 1In this context, a terminal node is a device, equipment, module, chip, or chip system with transceiver capabilities. This terminal node can also be referred to as terminal equipment, user equipment (UE), access terminal, subscriber unit, user station, mobile station (MS), mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user equipment. The terminal nodes in the embodiments of this application can be mobile phones, cellular phones, smartphones, tablets, mice, remote controls, styluses, set-top boxes, routers, cameras, screens, smart screens, wireless data cards, personal digital assistant computers (PDAs), wireless modems, handsets, laptop computers, smartwatches, smart bracelets, wireless headphones, electronic whiteboards, machine-type communication (MTC) terminals, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, smart home devices (e.g., refrigerators, televisions, air conditioners, washing machines, rice cookers, table lamps, electricity meters, etc.), smart robots, robotic arms, workshop equipment, wireless terminals in autonomous driving, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, and transportation security. Wireless terminals in various applications include those related to safety, smart cities, smart homes, in-vehicle terminals, in-vehicle screens, in-vehicle audio systems, car keys, roadside units (RSUs) with terminal functions, and flying equipment (e.g., intelligent robots, hot air balloons, drones, airplanes). The terminal node in this application can also be an in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit integrated into a vehicle as one or more components or units. The terminal node can also be other devices with terminal functions; for example, it can be a device that performs terminal functions in device-to-device (D2D) communication.

[0128] The embodiments of this application do not limit the device form of the terminal. The device used to implement the function of the terminal node can be the terminal node itself; it can also be a device that supports the terminal node in implementing the function, such as a chip system. The device can be installed in the terminal node or used in conjunction with the terminal node. In the embodiments of this application, the chip system can be composed of chips or can include chips and other discrete devices.

[0129] It should be noted that the solutions in the embodiments of this application can also be applied to other communication systems, and the corresponding names can be replaced by the names of the corresponding functions in other communication systems.

[0130] Based on the above description of the terminal node and the management node, optionally, the communication method provided in the embodiments of this application can be implemented by the aforementioned terminal node or management node, or by components of the terminal node or management node, such as by application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or software (such as program code in memory) deployed in the terminal node or management node, without limitation.

[0131] The following is combined with Figure 1 The communication system shown refers to the following Figure 2 The communication method provided in the embodiments of this application will be described, wherein the sending device can be the one described above. Figure 1 In the communication system shown, the receiving device for any management node or any terminal node can be one of the above-mentioned... Figure 1 Any management node or any terminal node in the communication system shown.

[0132] Figure 2 A flowchart of a communication method provided in an embodiment of this application is shown below. Figure 2 As shown, the method includes:

[0133] Step 201a: The transmitting device maps the first channel measurement reference signal of the first antenna port to the first time-frequency resource, and maps the second channel measurement reference signal of the second antenna port to the first time-frequency resource.

[0134] The first antenna port and the second antenna port can be two antenna ports from a plurality of antenna ports of the transmitting device. For example, if the transmitting device includes two antenna ports, the first antenna port and the second antenna port are the two antenna ports of the transmitting device. In another example, if the transmitting device includes at least three antenna ports, the first antenna port and the second antenna port can be any two antenna ports from at least three antenna ports of the transmitting device.

[0135] As the Starlight wireless communication technology evolves and develops, the Starlight wireless communication technology standard will re-plan the time and frequency resources. For example, a superframe can be composed of fewer wireless frames, and a carrier can be composed of more subcarriers.

[0136] For example, such as Figure 3 As shown, a superframe has a duration of 1ms and contains 8 radio frames. These 8 radio frames are numbered (or indexed) sequentially from front to back in time as: #0, #1, ..., #7.

[0137] Each radio frame may include 14 time-domain symbols, or 13 time-domain symbols, or 12 time-domain symbols, or 10 time-domain symbols, etc., without limitation.

[0138] For example, such as Figure 4 As shown, the system bandwidth of N×20MHz can include N carriers. Any one of these N carriers consists of 157 consecutive subcarriers. These 157 subcarriers are numbered (or indexed) in order of frequency from low to high as: #0, #1, ..., #156. Subcarrier #78 is a DC subcarrier. The other 156 subcarriers besides the DC subcarriers are called effective subcarriers.

[0139] In this system, the channel bandwidth of any one carrier is 20MHz, and the 157 subcarriers corresponding to this carrier occupy a total of 18.84MHz. The width of each subcarrier is 120kHz, and the corresponding subcarrier spacing is also 120kHz. There are guard bands with a certain bandwidth on both sides of this carrier. For example, there is a left guard band (480 / 640 / 800kHz) on the left and a right guard band (480 / 640 / 800kHz) on the right.

[0140] Based on the above description of time-frequency resources, for each antenna port, a frequency domain subcarrier consisting of 157 subcarriers can be defined on each radio frame of each carrier. A resource grid composed of time-domain symbols, This indicates the number of time-domain symbols included in a radio frame. Each cell in a resource grid of antenna port #p can be called a resource cell, and each resource cell can be indexed by the unique index (k, l)p of the resource grid. Here, k and l are the indexes in the frequency domain and frequency domain, respectively; that is, k is the index of the subcarrier in the frequency domain, and l is the index of the time-domain symbol.

[0141] Based on the above description of superframes and carriers, the transmitting device can map the channel measurement reference signals of the two antenna ports onto the first time-frequency resource, that is, the transmitting device can map a complex value onto each resource element corresponding to the first time-frequency resource. The first time-frequency resource can correspond to a time-domain symbol and a carrier, which can be a time-domain symbol and a carrier within a radio frame. A carrier can include 157 consecutive subcarriers. This mapping method can be called the first mapping method, and the time-frequency resource overhead of this first mapping method is: all subcarriers of a time-domain symbol.

[0142] The radio frame can be any one of the multiple radio frames included in a superframe, or a specific radio frame; the time-domain symbol can be any one of the multiple time-domain symbols included in the radio frame, or a specific time-domain symbol. For example, the superframe includes 8 radio frames with corresponding indices from 0 to 7, and the index of the radio frame is n, where n can be any one of 0 to 7; the radio frame can include Nsfyrmabme time-domain symbols with corresponding indices from 0 to Nsfyrmabme-1, and the index of the time-domain symbol is l, where l can be any one of 0 to Nsfyrmabme-1.

[0143] Additionally, the aforementioned channel measurement reference signal can be a reference signal used for channel measurement. Optionally, the channel measurement reference signal can be CSI-RS or SRS. In one example, when the transmitting device is a management node, the channel measurement reference signal is CSI-RS. In another example, when the transmitting device is a terminal node, the channel measurement reference signal can be SRS.

[0144] Alternatively, unlike step 201a above where the transmitting device maps the channel measurement reference signals of the two antenna ports to the first time-frequency resource respectively, the transmitting device may also refer to step 201b below to map the channel measurement reference signals of the two antenna ports to the second time-frequency resource respectively:

[0145] Step 201b: The transmitting device maps the first channel measurement reference signal of the first antenna port to the second time-frequency resource, and maps the second channel measurement reference signal of the second antenna port to the second time-frequency resource.

[0146] The transmitting device can map the channel measurement reference signals of the two antenna ports onto the second time-frequency resource, that is, the transmitting device can map a complex value onto each resource unit corresponding to the second time-frequency resource.

[0147] The second time-frequency resource can correspond to two time-domain symbols and one carrier. One carrier can include 157 consecutive subcarriers. The two time-domain symbols corresponding to the second time-frequency resource can be two time-domain symbols in the same radio frame, or they can be two time-domain symbols in different radio frames. The different radio frames can be different radio frames in different superframes, or they can be different radio frames in the same superframe, without restriction.

[0148] The mapping method shown in step 201b can also be called the second mapping method. The time-frequency resource overhead of the second mapping method is: all subcarriers of two time domain symbols.

[0149] Step 202: The transmitting device transmits a first channel measurement reference signal through the first antenna port and a second channel measurement reference signal through the second antenna port; correspondingly, the receiving device receives the first channel measurement reference signal from the transmitting device and the second channel measurement reference signal from the transmitting device.

[0150] In a first possible implementation, the transmitting device can consistently use step 201a to map the first channel measurement reference signal onto the first time-frequency resource and the second channel measurement reference signal onto the first time-frequency resource. This time-frequency resource mapping method can also be called the first mapping method, which can be described as mapping the channel measurement reference signals of the two antenna ports onto the first time-frequency resource. Then, the transmitting device can refer to step 202 to transmit the first channel measurement reference signal through the first antenna port and the second channel measurement reference signal through the second antenna port.

[0151] Based on this first possible implementation, a protocol predefined approach can be adopted, in which the transmitting device predefines the time-frequency resource mapping of the channel measurement signals of the two antenna ports using the first mapping method in the communication protocol.

[0152] In a second possible implementation, the transmitting device can also consistently use step 201b above to map the first channel measurement reference signal onto the second time-frequency resource, and the second channel measurement reference signal onto the second time-frequency resource. This time-frequency resource mapping method can also be called the second mapping method, which can be described as mapping the channel measurement reference signals of the two antenna ports onto the second time-frequency resource. Then, the transmitting device can refer to step 202 to transmit the first channel measurement reference signal through the first antenna port and the second channel measurement reference signal through the second antenna port.

[0153] Based on this second possible implementation, a protocol pre-definition approach can be adopted, in which the transmitting device pre-defines the time-frequency resource mapping of the channel measurement signals of the two antenna ports using the second mapping method.

[0154] In the third possible implementation, the transmitting device can obtain the second indication information and determine whether to use the first mapping method or the second mapping method to perform time-frequency resource mapping of the channel measurement reference signal of the two antenna ports, thereby realizing flexible switching between the first mapping method and the second mapping method.

[0155] The second indication information can be used to indicate either the first mapping method or the second mapping method. When the second indication information indicates the first mapping method, the transmitting device can refer to step 201a above to perform time-frequency resource mapping of the channel measurement reference signals for the two antenna ports based on the first mapping method. Alternatively, when the second indication information indicates the second mapping method, the transmitting device can refer to step 201b above to perform time-frequency resource mapping of the channel measurement reference signals for the two antenna ports based on the second mapping method.

[0156] Optionally, the second indication information may include at least 1 bit. For example, taking a second indication information comprising 1 bit as an example, the value of this 1 bit can be set to 0 to indicate that the second indication information is used to indicate the first mapping method, and the value of this 1 bit can be set to 1 to indicate that the second indication information is used to indicate the second mapping method. Alternatively, the value of this 1 bit can be set to 1 to indicate that the second indication information is used to indicate the first mapping method, and the value of this 1 bit can be set to 0 to indicate that the second indication information is used to indicate the second mapping method.

[0157] Optionally, the second indication information may be located in higher-layer signaling or physical-layer control information.

[0158] Optionally, when the receiving device receives the first channel measurement reference signal and the second channel measurement reference signal sent by the sending device, it can perform channel measurement based on the first channel measurement reference signal and the second channel measurement reference signal to obtain the channel measurement result.

[0159] Based on the above Figure 2 The method shown in this application provides two mapping methods for time-frequency resources: a first mapping method and a second mapping method. In both mapping methods, the carrier includes 157 consecutive subcarriers, which can be adapted to the re-planned time-frequency resources, improving the reliability and efficiency of information transmission.

[0160] In addition, in the first mapping method, the first time-frequency resource corresponds to one time-domain symbol and one carrier. That is, the channel measurement reference signal of the two antenna ports occupies all the subcarriers of one time-domain symbol. Compared with the channel measurement reference signal of the two antenna ports occupying all the subcarriers of two time-domain symbols, it can reduce the time-frequency resource overhead and improve communication efficiency while ensuring channel measurement performance. It is a relatively flexible time-frequency resource mapping method that can take into account both channel measurement performance and time-frequency resource overhead.

[0161] Based on the above Figure 2 The method shown below describes in detail the time-frequency resource mapping process by which the transmitting device maps the channel measurement reference signals of the two antenna ports to the first time-frequency resource based on the first mapping method:

[0162] In this method, the first channel measurement reference signal can occupy all 157 subcarriers of one time-domain symbol of the first time-frequency resource, and the second channel measurement reference signal can occupy all 157 subcarriers of one time-domain symbol of the first time-frequency resource. That is, the time-frequency resource overhead of the first mapping method is: all subcarriers of one time-domain symbol.

[0163] Specifically, when the first channel measurement reference signal and the second channel measurement reference signal are mapped to complex values ​​in the resource units corresponding to the first time-frequency resource, for any resource unit other than the resource unit corresponding to the DC subcarrier, the complex value mapped by the first channel measurement reference signal in that resource unit is non-zero, and the complex value mapped by the second channel measurement reference signal in that resource unit is zero; or, the complex value mapped by the first channel measurement reference signal in that resource unit is zero, and the complex value mapped by the second channel measurement reference signal in that resource unit is non-zero. This first mapping method can also be described as follows: the channel measurement reference signals of the two antenna ports reuse the time-domain symbol of the first time-frequency resource in a frequency-division manner.

[0164] For example, the first channel measurement reference signal and the second channel measurement reference signal are mapped onto complex values ​​on the first time-frequency resource. satisfy:

[0165]

[0166] Where n represents the index of the radio frame containing the first time-frequency resource, l represents the index of the time-domain symbol corresponding to the first time-frequency resource, k represents the index of the subcarrier of the carrier corresponding to the first time-frequency resource, p represents the index of the antenna port, and α RSLet denot be the power factor of the channel measurement reference signal, and rn,l(k) be the k-th value of the pseudo-random sequence. This pseudo-random sequence can be a pseudo-random sequence known to both the transmitting and receiving devices; for example, the pseudo-random sequence can be a pseudo-random quadrature phase shift keying (QPSK) sequence.

[0167] Optionally, the value of Δ(p) for the first antenna port can be 0, and the value of Δ(p) for the second antenna port can be 1. For example, as shown in Table 1 below, taking antenna port #0 as the first antenna port and antenna port #1 as the second antenna port, the value of Δ(p) for antenna port #0 can be 0, and the value of Δ(p) for antenna port #1 can be 1.

[0168] Table 1

[0169] Index of antenna port (#p) Δ(p) Antenna port #0 0 Antenna port #1 1

[0170] Optional, α RS The range of values ​​can be For example, α RS The value is When α RS When the value of is greater than 1, the energy on one subcarrier can be distributed to another subcarrier to achieve the purpose of power boosting.

[0171] Based on the above formula, refer to the following Figure 5 Taking the first antenna port as antenna port #0 and the second antenna port as antenna port #1 as an example, the complex values ​​of the first channel measurement reference signal of antenna port #0 and the second channel measurement reference signal of antenna port #1 mapped onto each subcarrier are:

[0172] The first channel measurement reference signal is mapped and indexed in the first time-frequency resource. The complex value of α on the effective subcarrier RS ·rn,l(k). That is, the complex value α of the first channel measurement reference signal mapped onto the effective subcarriers of the first time-frequency resource with index k={0,2,4,…,74,76,79,81,83,…,153,155}. RS ·rn l(k).

[0173] The first channel measurement reference signal is mapped in the first time-frequency resource, excluding the index. The complex values ​​on the effective subcarriers other than the effective subcarriers are 0. That is, the complex values ​​on the effective subcarriers of the first channel measurement reference signal mapped in the first time-frequency resource index k = {1,3,5,…,75,77,80,82,84,…,154,156} are 0.

[0174] The complex value of the first channel measurement reference signal mapped onto the DC subcarrier in the first time-frequency resource is 0. That is, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier with index k = {78} in the first time-frequency resource is 0.

[0175] The second channel measurement reference signal is mapped to the index in the first time-frequency resource. The complex value of α on the effective subcarrier RS ·rn,l(k). That is, the complex value α of the second channel measurement reference signal mapped onto the effective subcarriers of the first time-frequency resource with index k={1,3,5,…,75,77,80,82,84,…,154,156}. RS ·rnl(k).

[0176] The second channel measurement reference signal is mapped in the first time-frequency resource excluding the index. The complex values ​​on the effective subcarriers other than the effective subcarriers are 0. That is, the complex values ​​on the effective subcarriers of the second channel measurement reference signal mapped in the first time-frequency resource index k = {0, 2, 4, ..., 74, 76, 79, 81, 83, ..., 153, 155} are 0.

[0177] The complex value of the second channel measurement reference signal mapped onto the DC subcarrier in the first time-frequency resource is 0. That is, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} in the first time-frequency resource is 0.

[0178] Based on the above Figure 2 The method shown below describes in detail the time-frequency resource mapping process by which the transmitting device maps the channel measurement reference signals of the two antenna ports to the second time-frequency resource based on the second mapping method:

[0179] In this configuration, the first channel measurement reference signal can occupy all subcarriers of two time-domain symbols of the second time-frequency resource. Similarly, the second channel measurement reference signal can occupy all subcarriers of two time-domain symbols of the second time-frequency resource. Therefore, the time-frequency resource overhead of the second mapping method is: all subcarriers of two time-domain symbols.

[0180] When mapping complex values ​​of the first channel measurement reference signal and the second channel measurement reference signal to resource units corresponding to the second time-frequency resource, for any resource unit other than the resource unit corresponding to the DC subcarrier, the complex value mapped by the first channel measurement reference signal to the resource unit corresponding to one time-domain symbol in the two time-domain symbols is non-zero, and the complex value mapped to the resource unit corresponding to the other time-domain symbol is 0. The complex value mapped by the second channel measurement reference signal to the resource unit corresponding to the other time-domain symbol is non-zero, and the complex value mapped to the resource unit corresponding to the first time-domain symbol is 0. Alternatively, it can be described that each antenna port uses all 156 valid subcarriers of one time-domain symbol to map the complex value of its channel measurement reference signal in the second time-frequency resource (different antenna ports use different time-domain symbols), and also sets the complex values ​​mapped by all valid subcarriers of the other time-domain symbol to 0. This second mapping method can also be described as: the channel measurement reference signals of the two antenna ports reuse the carriers of the second time-frequency resource in a time-division manner.

[0181] For example, the first channel measurement reference signal and the second channel measurement reference signal are mapped onto complex values ​​on the second time-frequency resource. satisfy:

[0182]

[0183] τ = l + l′ and l′∈{0,σ}.

[0184] Where n represents the index of the radio frame containing the second time-frequency resource, τ = l + l′, l′∈{0,σ}, l represents the index of the first time-domain symbol corresponding to the second time-frequency resource, σ represents the difference between the indices of the two time-domain symbols corresponding to the second time-frequency resource, σ is a non-zero integer, the relative position of the two time-domain symbols of the second time-frequency resource can be adjusted by the parameter σ, the index of the second time-domain symbol corresponding to the second time-frequency resource can be l + σ, k represents the index of the subcarrier of the carrier corresponding to the second time-frequency resource, p represents the index of the antenna port, and rn,τ(k) represents the k-th value of the pseudo-random sequence. This pseudo-random sequence can be a pseudo-random sequence known to both the transmitting and receiving devices; for example, the pseudo-random sequence can be a pseudo-random QPSK sequence.

[0185] Optionally, the value of Σ(p) at the first antenna port is 0; the value of Σ(p) at the second antenna port is σ. For example, as shown in Table 2 below, taking antenna port #0 as the first antenna port and antenna port #1 as the second antenna port, the value of Σ(p) at antenna port #0 can be 0, and the value of Σ(p) at antenna port #1 can be σ.

[0186] Table 2

[0187] Index of antenna port (#p) ∑(p) Antenna port #0 0 Antenna port #1 σ

[0188] Optionally, the sending device may obtain first indication information, which is used to indicate the value of σ; or, the value of σ may be predefined.

[0189] Optionally, the first indication information is located in higher-layer signaling or physical-layer control information.

[0190] For example, the value of σ can be in the range of [-15, 20]. For instance, the value of σ can be 1, 2, 3, or 4, etc., without restriction.

[0191] Based on the above formula, refer to the following Figure 6 Taking σ as 1, the first antenna port as antenna port #0, and the second antenna port as antenna port #1 as an example, the complex values ​​of the first channel measurement reference signal of antenna port #0 and the second channel measurement reference signal of antenna port #1 mapped onto each subcarrier are:

[0192] The complex value of the first channel measurement reference signal mapped onto all effective subcarriers of the carrier of the first time-domain symbol (e.g., time-domain symbol #l) of the second time-frequency resource is rn,τ(k). That is, the complex value of the first channel measurement reference signal mapped onto the effective subcarriers of the carrier of the first time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} is rn,τ(k).

[0193] The complex values ​​of the first channel measurement reference signal mapped onto all effective subcarriers of the carrier in the second time-domain symbol (e.g., time-domain symbol #l+1) of the second time-frequency resource are 0. That is, the complex values ​​of the first channel measurement reference signal mapped onto the effective subcarriers of the carrier in the second time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} are 0.

[0194] The complex value of the first channel measurement reference signal mapped onto the DC subcarrier of the two time-domain symbols (e.g., time-domain symbol #1 and time-domain symbol #1+1) of the second time-frequency resource is 0. That is, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the first time-domain symbol (e.g., time-domain symbol #1) of the second time-frequency resource is 0; the complex value of the first channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the second time-domain symbol (e.g., time-domain symbol #1+1) of the second time-frequency resource is 0.

[0195] The complex value of the second channel measurement reference signal mapped onto all effective subcarriers of the carrier of the second time-domain symbol (e.g., time-domain symbol #l+1) of the second time-frequency resource is rn,τ(k). That is, the complex value of the second channel measurement reference signal mapped onto the effective subcarriers of the carrier of the second time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} is rn,τ(k).

[0196] The complex values ​​of the second channel measurement reference signal mapped onto all effective subcarriers of the carrier in the first time-domain symbol (e.g., time-domain symbol #l) of the second time-frequency resource are 0. That is, the complex values ​​of the second channel measurement reference signal mapped onto the effective subcarriers of the carrier in the first time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} are 0.

[0197] The complex value of the second channel measurement reference signal mapped onto the DC subcarrier of the two time-domain symbols (e.g., time-domain symbol #1 and time-domain symbol #1+1) of the second time-frequency resource is 0. That is, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the first time-domain symbol (e.g., time-domain symbol #1) of the second time-frequency resource is 0; the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the second time-domain symbol (e.g., time-domain symbol #1+1) of the second time-frequency resource is 0.

[0198] Based on the above formula, refer to the following Figure 7 Taking σ as 3, the first antenna port as antenna port #0, and the second antenna port as antenna port #1 as an example, the complex values ​​of the first channel measurement reference signal of antenna port #0 and the second channel measurement reference signal of antenna port #1 mapped onto each subcarrier are:

[0199] The complex value of the first channel measurement reference signal mapped onto all effective subcarriers of the carrier of the first time-domain symbol (e.g., time-domain symbol #l) of the second time-frequency resource is rn,τ(k). That is, the complex value of the first channel measurement reference signal mapped onto the effective subcarriers of the carrier of the first time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} is rn,τ(k).

[0200] The complex values ​​of the first channel measurement reference signal mapped onto all effective subcarriers of the carrier in the second time-domain symbol (e.g., time-domain symbol #1+3) of the second time-frequency resource are 0. That is, the complex values ​​of the first channel measurement reference signal mapped onto the effective subcarriers of the carrier in the second time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} are 0.

[0201] The complex value of the first channel measurement reference signal mapped onto the DC subcarrier of the two time-domain symbols (e.g., time-domain symbol #1 and time-domain symbol #1+3) of the second time-frequency resource is 0. That is, the complex value of the first channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the first time-domain symbol (e.g., time-domain symbol #1) of the second time-frequency resource is 0; the complex value of the first channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the second time-domain symbol (e.g., time-domain symbol #1+3) of the second time-frequency resource is 0.

[0202] The complex value of the second channel measurement reference signal mapped onto all effective subcarriers of the carrier of the second time-domain symbol (e.g., time-domain symbol #1+3) of the second time-frequency resource is rn,τ(k). That is, the complex value of the second channel measurement reference signal mapped onto the effective subcarriers of the carrier in the second time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} is rn,τ(k).

[0203] The complex values ​​of the second channel measurement reference signal mapped onto all effective subcarriers of the carrier in the first time-domain symbol (e.g., time-domain symbol #l) of the second time-frequency resource are 0. That is, the complex values ​​of the second channel measurement reference signal mapped onto the effective subcarriers of the carrier in the first time-domain symbol of the second time-frequency resource with index k = {0,1,2,…,76,77,79,80,81,…,155,156} are 0.

[0204] The complex value of the second channel measurement reference signal mapped onto the DC subcarrier of the two time-domain symbols (e.g., time-domain symbol #1 and time-domain symbol #1+3) of the second time-frequency resource is 0. That is, the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the first time-domain symbol (e.g., time-domain symbol #1) of the second time-frequency resource is 0; the complex value of the second channel measurement reference signal mapped onto the DC subcarrier with index k = {78} of the second time-domain symbol (e.g., time-domain symbol #1+3) of the second time-frequency resource is 0.

[0205] Based on the above description of the time-frequency resource mapping method for the channel measurement reference signal of the two antenna ports, the scheme provided in this application embodiment is applicable to at least one of wireless communication such as Bluetooth (BT) communication, Sparklink (or Nearlink) communication, and Wi-Fi communication. In this application embodiment, BT and Bluetooth Low Energy (BLE) can refer to each other. Sparklink can include at least one of the following: Sparklink Low Energy (SLE), Sparklink Basic (SLB), or Sparklink Position (SLP). In this application embodiment, Sparklink and Sparklink Low Energy (SLE), Sparklink Basic (SLB), or Sparklink Position (SLP) can refer to each other.

[0206] The following describes some embodiments of the solution provided in this application.

[0207] Example 1:

[0208] Bluetooth (BT), Wi-Fi, and SparkLink (or NearLink) can all use the 2.4GHz or 5GHz frequency bands and have similarities. Some modules can be reused, thus saving chip cost, area, and power consumption. Chip resources can be highly reused, allowing for rapid iteration of multiple chips.

[0209] Wi-Fi and SLB can share a single RF architecture and path. For example... Figure 8 The diagram shown is a schematic representation of a chip architecture provided in an embodiment of this application. Figure 8 It is known that through design, resources such as central processing unit (CPU), radio frequency (RF) unit, analog baseband (ABB) unit, or modem can be shared, and some modules of media access control (MAC) layer can be reused, thereby saving chip area and reducing chip cost and power consumption.

[0210] like Figure 9 The diagram shown is a schematic representation of another chip architecture provided in an embodiment of this application. Figure 9It is known that the MAC units of BT, SLB and Wireless Fidelity (Wi-Fi) are implemented independently, while the RF units and Modem units of each mode are all shared.

[0211] like Figure 10 The diagram shown is a schematic representation of another chip architecture provided in an embodiment of this application. Figure 10 It can be seen that the MAC units of BT, SLB and Wi-Fi are implemented independently, and the Modems of BT, SLB and Wi-Fi are also implemented independently, while the RF units of each mode are all shared.

[0212] like Figure 11 The diagram shown is a schematic representation of another chip architecture provided in an embodiment of this application. Figure 11 It can be seen that the MAC units of BT, SLB and Wi-Fi are implemented independently. Some modes, such as Wi-Fi and SLB, share the same modem, while other modes, such as BT, have their modems implemented independently. All modes share the same RF.

[0213] Example 2:

[0214] The StarSpark chip can be manufactured using 14 / 28 / 40nm processes and packaged in chip-size packages (CSP), ball grid arrays (BGA), and quad flat no-lead (QFN) formats, employing either internal or external flash memory. Depending on the application scenario, at least one of the following subsystems can be integrated onto a single chip: power management unit (PMU), clock management unit (CMU), active optical network (AON), wireless local area network (WLAN), or BT, StarSpark, global navigation satellite system (GNSS), application (APP), and audio. This minimizes area, maximizes functionality, and improves performance and reliability.

[0215] This application provides a chip design approach where the stroboscopic subsystem is integrated with other subsystems onto a single chip. Depending on the product, the chip's subsystems can be tailored and combined, and the different subsystems are connected via a bus.

[0216] like Figure 12The diagram shown is a schematic representation of a chip module framework provided in an embodiment of this application. Figure 12 It is understood that for products requiring BT or GNSS functional modules, and simultaneously needing to connect to Wi-Fi and satellite flash devices, Wi-Fi and SLB can be separated into different systems, and then combined with at least one of the following on a single chip: BT System, SLE System, GNSS System, Always On System, PMU, CMU, Flash memory, APP System, and Audio System. Different subsystems are connected via a bus.

[0217] like Figure 13 As shown, this is a schematic diagram of another chip module framework provided in an embodiment of this application. Figure 13 It is known that, in some embodiments, in order to save area and cost, Wi-Fi and SLB can be combined into one subsystem, and then combined with at least one of the following on a chip: BT System, SLE System, GNSS System, Always On System, PMU, CMU, Flash memory, APP System, AudioSystem, etc., with different subsystems connected to each other via a bus.

[0218] Example 3:

[0219] The Wi-Fi / SLB 2.4GHz band operates in the 2412–2472MHz range, while the BT / BLE / SLE band operates in the 2402–2480MHz range, which may cause mutual interference. Within the same core, SLB and Wi-Fi can allocate service time slots through software scheduling; however, there is a lack of unified scheduling for SLB and Wi-Fi / BT / BLE / SLE on different cores.

[0220] This application provides a communication coexistence scheme for SLB / Wi-Fi / SLE / BT / BLE. Based on whether SLB and Wi-Fi / SLE / BT / BLE share an antenna, the coexistence scenario is divided into coexistence with different antennas (using different antennas) and coexistence with the same antenna (using the same antenna), and different coexistence strategies are given.

[0221] For the coexistence of different antennas, if SLB and Wi-Fi coexist, it can be ensured that the transmit and receive frequencies of SLB and Wi-Fi are different (i.e., frequency division multiplexing). The software can handle this from the aspects of code division multiplexing, service cycle, and interval (i.e., frequency division multiplexing). If SLB and SLE / BT / BLE coexist, and the isolation requirement cannot be met, it is necessary to avoid the channels where SLE / BT / BLE is located (i.e., channel avoidance) to reduce the impact of SLE / BT / BLE. At the same time, an aggregation scheduling mechanism can be added to aggregate and centrally send SLE / BT / BLE data packets (i.e., aggregation scheduling) to reduce the probability of interference from SLE / BT / BLE.

[0222] For shared antenna coexistence, software static strategies or hardware arbitration time-division strategies (such as packet traffic arbitration, PTA) can be used. Frequency division multiplexing, code division multiplexing, and time division multiplexing can also be employed. The advantages of software static strategies are: low hardware requirements, minimal software modifications, and no dynamic radio frequency (RF) switching (such as RF recovery). The advantages of PTA strategies are: faster service state switching and finer granularity of switching time. Packet traffic arbitration (PTA) can also be called data packet traffic arbitration.

[0223] Taking the coexistence of SLB and SLE / BT / BLE as an example, such as Figure 14 The diagram shown is a framework illustration of a software static strategy provided in an embodiment of this application. Figure 14 As can be seen, the software static strategy can include: after SLB starts, the software configures the host to notify SLE / BT / BLE to exit the current RF path. In this scenario, SLE / BT / BLE can check the SLB startup flag, and the software can be configured to switch from the current RF path to another RF path. The chip needs to support software-configured switching.

[0224] Taking the coexistence of SLB and Wi-Fi as an example, such as Figure 15 The diagram shown is a framework illustration of a software static strategy provided in an embodiment of this application. Figure 15 As can be seen, the software static strategy can include: after SLB starts, the software configures the host to notify Wi-Fi to exit the current RF path. In this scenario, Wi-Fi can check the SLB startup flag, and the software can be configured to switch from the current RF path to another RF path. The chip needs to support software-configured switching.

[0225] For example, such as Figure 16The diagram illustrates a framework for a Transmission Protocol Arbitration (PTA) strategy provided in this application. The PTA can use an arbitrator to determine whether one or more of the following—SLB / Wi-Fi / SLE / BT / BLE—use the radio frequency (RF) and the RF occupancy status. For example, if an SLB needs to use the RF, it can request access from the arbitrator. The arbitrator can then decide whether the SLB is allowed to use the RF based on its access request, access policy, and actual occupancy status. The PTA architecture can be a two-line, three-line, or four-line architecture, etc., and can be designed and configured according to business requirements. Figure 16 As can be seen, the Transmission Arbitration (PTA) strategy includes time-division multiplexing of any combination of transmit (TX) and receive (RX) signals from each party in SLB / Wi-Fi / SLE / BT / BLE. The PTA module can transmit the occupancy status of the radio frequency channel to each party, using different level signals to indicate that the radio frequency channel is occupied by one or more of SLB / Wi-Fi / SLE / BT / BLE. This level signal is used to notify the software or hardware to perform the corresponding processing. Different services can also be assigned different PTA priorities, with higher-priority services able to preempt air interface resources.

[0226] It should be noted that the various embodiments of this application can be implemented independently or in combination, without limitation. Unless otherwise specified or in conflict, the terminology and / or descriptions between the different embodiments provided in this application are consistent and can be referenced mutually. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0227] It is understood that in the embodiments of this application, the executing entity may perform some or all of the steps in the embodiments of this application. These steps or operations are merely examples, and the embodiments of this application may also perform other operations or variations thereof. Furthermore, the various steps may be executed in different orders as presented in the embodiments of this application, and it is not necessarily necessary to execute all the operations in the embodiments of this application.

[0228] The foregoing primarily describes the solutions provided in this application from the perspective of device-to-device interaction. It is understood that each device, in order to achieve the aforementioned functions, includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0229] This application embodiment can divide each device into functional modules according to the above method example. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0230] In some embodiments, this application also provides a communication device 170 for transmitting a starburst signal. The communication device 170 may include: a module for mapping a first channel measurement reference signal from a first antenna port to a first time-frequency resource, and mapping a second channel measurement reference signal from a second antenna port to the first time-frequency resource; wherein the first time-frequency resource corresponds to one time-domain symbol and one carrier, and the carrier includes 157 consecutive subcarriers; or, a module for mapping the first channel measurement reference signal from the first antenna port to a second time-frequency resource, and mapping the second channel measurement reference signal from the second antenna port to the second time-frequency resource; wherein the second time-frequency resource corresponds to two time-domain symbols and one carrier, and the carrier includes 157 consecutive subcarriers; and a module for transmitting the first channel measurement reference signal through the first antenna port and transmitting the second channel measurement reference signal through the second antenna port.

[0231] Optionally, such as Figure 17 As shown, the module that maps the channel measurement reference signal to time-frequency resources can be a processing module 1701. The module for transmitting the channel measurement reference signal through the antenna port can be a communication module 1702.

[0232] In this application embodiment, the communication module and the processing module can be deployed simultaneously in the StarScan module, Bluetooth module, or Wi-Fi module; or, in this application embodiment, the communication module can be deployed in the StarScan module, Bluetooth module, or Wi-Fi module, and the processing module can be deployed in other modules besides the StarScan module, Bluetooth module, or Wi-Fi module; or, in this application embodiment, the processing module can be deployed in the StarScan module, Bluetooth module, or Wi-Fi module, and the communication module can be deployed in other modules besides the StarScan module, Bluetooth module, or Wi-Fi module. This application embodiment does not specifically limit this.

[0233] This application embodiment also provides a method such as Figure 18 The communication device shown can be used for both the management node and the terminal node. Figure 18 The shown composition structure, or includingFigure 18 The components shown. Figure 18 This is a schematic diagram illustrating the composition of a communication device 1800 provided in an embodiment of this application. The communication device 1800 can be a management node or a chip or system-on-a-chip within a management node; it can also be a terminal node or a chip or system-on-a-chip within a terminal node. For example... Figure 18 As shown, the communication device 1800 includes a processor 1801, a transceiver 1802, and a communication line 1803.

[0234] Furthermore, the communication device 1800 may also include a memory 1804. The processor 1801, the memory 1804, and the transceiver 1802 can be connected via a communication line 1803.

[0235] The processor 1801 can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 1801 can also be other devices with processing capabilities, such as circuits, devices, or software modules, without limitation.

[0236] Transceiver 1802 is used to communicate with other devices or other communication networks. These other communication networks can be Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. Transceiver 1802 can be a module, circuit, transceiver, or any device capable of enabling communication.

[0237] Communication line 1803 is used to transmit information between the components included in communication device 1800.

[0238] Memory 1804 is used to store instructions. These instructions can be computer programs.

[0239] The memory 1804 can be a read-only memory (ROM) or other type of static storage device that can store static information and / or instructions; it can also be a random access memory (RAM) or other type of dynamic storage device that can store information and / or instructions; it can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0240] It should be noted that the memory 1804 can exist independently of the processor 1801 or can be integrated with the processor 1801. The memory 1804 can be used to store instructions, program code, or some data, etc. The memory 1804 can be located inside or outside the communication device 1800, without limitation. The processor 1801 is used to execute the instructions stored in the memory 1804 to implement the communication method provided in the following embodiments of this application.

[0241] In one example, processor 1801 may include one or more CPUs, for example Figure 18 CPU0 and CPU1 in the CPU.

[0242] As an optional implementation, the communication device 1800 includes multiple processors, for example, besides Figure 18 In addition to processor 1801, it may also include processor 1807.

[0243] As an optional implementation, the communication device 1800 also includes an output device 1805 and an input device 1806. For example, the input device 1806 is a device such as a keyboard, mouse, microphone, or joystick, and the output device 1805 is a device such as a display screen or speaker.

[0244] It should be noted that the communication device 1800 can be a desktop computer, laptop computer, network server, mobile phone, tablet computer, wireless terminal, embedded device, chip system, or something else. Figure 18 Equipment with a similar structure. Furthermore... Figure 18 The structural composition shown does not constitute a limitation on the communication device, except... ​In addition to the components shown, the communication device may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0245] In this embodiment of the application, the chip system may be composed of chips or may include chips and other discrete devices.

[0246] Furthermore, the actions, terms, etc., involved in the various embodiments of this application can be referenced interchangeably without limitation. The message names or parameter names in the messages between the various devices in the embodiments of this application are merely examples, and other names may be used in specific implementations without limitation.

[0247] This application also provides a computer program product that, when executed by a computer, can implement the functions of any of the above method embodiments.

[0248] This application also provides a computer program that, when executed by a computer, can implement the functions of any of the above method embodiments.

[0249] This application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be implemented by a computer program instructing related hardware. This program can be stored in the computer-readable storage medium, and when executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be an internal storage unit of the terminal (including a data sending end and / or a data receiving end) of any of the foregoing embodiments, such as the terminal's hard disk or memory. The computer-readable storage medium can also be an external storage device of the terminal, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the terminal. Further, the computer-readable storage medium can include both the terminal's internal storage unit and external storage devices. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0250] It should be noted that the terms "first" and "second," etc., in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. "First" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this embodiment, unless otherwise stated, "a plurality of" means two or more.

[0251] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0252] It should be understood that in this application, "at least one (item)" means one or more. "More than one" means two or more. "At least two (items)" means two or three or more. "And / or" is used to describe the relationship between related objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple. Both "...when" and "if" indicate that a corresponding action will be taken under certain objective circumstances. They are not time limits, nor do they require a judgment action to be taken when the action is taken, nor do they imply any other limitations.

[0253] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0254] In this application, "sending information to... (terminal node)" can be understood as the destination of the information being a terminal node. This can include sending information directly or indirectly to a terminal node. "Receiving information from... (terminal node)" can be understood as the source of the information being a terminal node, and can include receiving information directly or indirectly from a terminal node. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source.

[0255] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0256] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0257] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0258] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0259] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of this application embodiment, or all or part of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

Claims

1. A communication method characterized by comprising: comprises: mapping a first channel measurement reference signal of a first antenna port on a first time-frequency resource, and mapping a second channel measurement reference signal of a second antenna port on the first time-frequency resource; wherein the first time-frequency resource corresponds to one time-domain symbol and one carrier, and the carrier comprises 157 continuous subcarriers; or mapping a first channel measurement reference signal of a first antenna port on a second time-frequency resource, and mapping a second channel measurement reference signal of a second antenna port on the second time-frequency resource; wherein the second time-frequency resource corresponds to two time-domain symbols and one carrier, and the carrier comprises 157 continuous subcarriers; transmitting the first channel measurement reference signal through the first antenna port, and transmitting the second channel measurement reference signal through the second antenna port.

2. The method of claim 1, wherein the first antenna port and the second antenna port are two antenna ports of a plurality of antenna ports of a transmitting terminal device.

3. The method of claim 1 or 2, wherein the 157 subcarriers correspond to indexes 0-156 in sequence from low to high frequency, wherein the subcarrier with index 78 is a direct current subcarrier, and the remaining subcarriers are effective subcarriers.

4. The method according to any one of claims 1 to 3, characterized in that, a complex value of the first channel measurement reference signal and the second channel measurement reference signal mapped on the first time-frequency resource satisfies: wherein n represents an index of a radio frame in which the first time-frequency resource is located, 1 represents an index of a time domain symbol corresponding to the first time-frequency resource, k represents an index of a subcarrier of a carrier corresponding to the first time-frequency resource, p represents an index of an antenna port, a RS represents a power factor of the channel measurement reference signal, and rn,l(k) represents a kth value of a pseudo-random sequence.

5. The method of claim 4, wherein Δ(p) of the first antenna port is 0; Δ(p) of the second antenna port is 1.

6. The method of claim 4 or 5, wherein The α RS ranges from 0 to 1 7. The method of any one of claims 1-6, wherein The complex value of the first channel measurement reference signal mapped on the effective subcarrier with index α RS · rn,l(k).

8. The method of any one of claims 1-7, wherein The first channel measurement reference signal maps complex values of a on valid subcarriers with index k = {0, 2, 4,..., 74, 76, 79, 81,..., 153, 155} in the first time-frequency resource RS • rn,l(k).

9. The method of any one of claims 1-8, wherein The first channel measurement reference signal maps a complex value of 0 on valid subcarriers other than valid subcarriers of index in the first time-frequency resource.

10. The method of any one of claims 1-9, wherein the complex value of the first channel measurement reference signal mapped on the effective subcarriers with indexes k = {1, 3, 5, …, 75, 77, 80, 82, 84, …, 154, 156} in the first time-frequency resource is 0.

11. The method of any one of claims 1-10, wherein the complex value of the first channel measurement reference signal mapped on the direct current subcarriers in the first time-frequency resource is 0.

12. The method of any one of claims 1-11, wherein the complex value of the first channel measurement reference signal mapped on the direct current subcarriers with indexes k = {78} in the first time-frequency resource is 0.

13. The method of any one of claims 1-12, wherein The second channel measurement reference signal maps a complex value of a at an effective subcarrier with index RS · rn,l(k).

14. The method of any one of claims 1-13, wherein The second channel measurement reference signal maps complex values of a on valid subcarriers with index k = {1, 3, 5,..., 75, 77, 80, 82, 84,..., 154, 156} in the first time-frequency resource RS • rn,l(k).

15. The method of any one of claims 1-14, wherein The second channel measurement reference signal maps a complex value of 0 on the valid subcarriers in the first time-frequency resource except the valid subcarriers with index 0.

16. The method of any one of claims 1-15, wherein the complex value of the second channel measurement reference signal mapped on the effective subcarriers with indexes k = {0, 2, 4, …, 74, 76, 79, 81, 83, …, 153, 155} in the first time-frequency resource is 0.

17. The method of any one of claims 1-16, wherein a complex value of the second channel measurement reference signal mapped on a direct current subcarrier in the first time-frequency resource is 0.

18. The method of any one of claims 1-17, wherein a complex value of the second channel measurement reference signal mapped on a direct current subcarrier with index k = {78} in the first time-frequency resource is 0.

19. The method of any one of claims 1-3, wherein the two time-domain symbols corresponding to the second time-frequency resource are different time-domain symbols of a same radio frame; or the two time-domain symbols corresponding to the second time-frequency resource are different time-domain symbols of different radio frames. τ = l + l' and l' ∈ {0, σ}. wherein n represents an index of a radio frame in which the second time-frequency resource is located, τ = l + l', l' ∈ {0, σ}, l represents an index of a first time-domain symbol corresponding to the second time-frequency resource, σ represents a difference between indices of the two time-domain symbols corresponding to the second time-frequency resource, σ is a non-zero integer, k represents an index of a subcarrier of a carrier corresponding to the second time-frequency resource, p represents an index of an antenna port, and rn,τ(k) represents a kth value of a pseudo-random sequence.

21. The method of claim 20, wherein a value of Σ(p) of the first antenna port is 0; and a value of Σ(p) of the second antenna port is σ. The method further comprises: obtaining first indication information, wherein the first indication information is used to indicate a value of the σ; or the value of the σ is predefined.

20. The method of any one of claims 1-3, 19, wherein, a complex value of the first channel measurement reference signal and the second channel measurement reference signal mapped on the second time-frequency resource satisfies:

23. The method of any one of claims 20-22, wherein a value range of the σ is [-15, 20].

24. The method of any one of claims 1-3, 19-23, wherein a complex value of the first channel measurement reference signal mapped on all valid subcarriers of a carrier of a first time-domain symbol of the second time-frequency resource is rn,τ(k).

25. The method of any one of claims 1-3, 19-24, wherein a complex value of the first channel measurement reference signal mapped on valid subcarriers with index k = {0, 1, 2, …, 76, 77, 79, 80, 81, …, 155, 156} in a carrier of a first time-domain symbol of the second time-frequency resource is rn,τ(k).

26. The method of any one of claims 1-3, 19-25, wherein a complex value of the first channel measurement reference signal mapped on all valid subcarriers of a carrier of a second time-domain symbol of the second time-frequency resource is 0.

27. The method of any one of claims 1-3, 19-26, wherein a complex value of the first channel measurement reference signal mapped on valid subcarriers with index k = {0, 1, 2, …, 76, 77, 79, 80, 81, …, 155, 156} in a carrier of a second time-domain symbol of the second time-frequency resource is 0.

22. The method of claim 20 or 21, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 28. The method of any of claims 1-3, 19-27, wherein the complex values of the first channel measurement reference signal mapped on the DC subcarriers in the carriers of the two time domain symbols of the second time-frequency resource are zero.

29. The method of any of claims 1-3, 19-28, wherein the complex values of the first channel measurement reference signal mapped on the DC subcarriers with index k = {78} in the carriers of the first time domain symbol of the second time-frequency resource are zero; the complex values of the first channel measurement reference signal mapped on the DC subcarriers with index k = {78} in the carriers of the second time domain symbol of the second time-frequency resource are zero.

30. The method of any of claims 1-3, 19-29, wherein the complex values of the second channel measurement reference signal mapped on all the active subcarriers of the carriers of the second time domain symbol of the second time-frequency resource are rn,τ(k).

31. The method of any of claims 1-3, 19-30, wherein the complex values of the second channel measurement reference signal mapped on the active subcarriers with index k = {0, 1, 2,..., 76, 77, 79, 80, 81,..., 155, 156} in the carriers of the second time domain symbol of the second time-frequency resource are rn,τ(k).

32. The method of any of claims 1-3, 19-31, wherein the complex values of the second channel measurement reference signal mapped on all the active subcarriers of the carriers of the first time domain symbol of the second time-frequency resource are zero.

33. The method of any of claims 1-3, 19-32, wherein the complex values of the second channel measurement reference signal mapped on the active subcarriers with index k = {0, 1, 2,..., 76, 77, 79, 80, 81,..., 155, 156} in the carriers of the first time domain symbol of the second time-frequency resource are zero.

34. The method of any of claims 1-3, 19-33, wherein the complex values of the second channel measurement reference signal mapped on the DC subcarriers in the carriers of the two time domain symbols of the second time-frequency resource are zero.

35. The method of any of claims 1-3, 19-34, wherein the complex values of the second channel measurement reference signal mapped on the DC subcarriers with index k = {78} in the carriers of the first time domain symbol of the second time-frequency resource are zero; the complex values of the second channel measurement reference signal mapped on the DC subcarriers with index k = {78} in the carriers of the second time domain symbol of the second time-frequency resource are zero.

36. The method of any of claims 1-35, wherein obtaining second indication information; wherein the second indication information is used for indicating a first mapping manner, or the second indication information is used for indicating a second mapping manner; the first mapping manner is mapping channel measurement reference signals of two antenna ports to the first time-frequency resource, and the second mapping manner is mapping channel measurement reference signals of two antenna ports to the second time-frequency resource; in a case where the second indication information is used for indicating the first mapping manner, mapping a first channel measurement reference signal of the first antenna port to the first time-frequency resource and mapping a second channel measurement reference signal of the second antenna port to the first time-frequency resource; or in a case where the second indication information is used for indicating the second mapping manner, mapping a first channel measurement reference signal of the first antenna port to the second time-frequency resource and mapping a second channel measurement reference signal of the second antenna port to the second time-frequency resource.

37. A communications device, characterized by The communication device comprises a star flash module for implementing transmission of a star flash signal, and the communication device comprises: a module for mapping a first channel measurement reference signal of a first antenna port to a first time-frequency resource and mapping a second channel measurement reference signal of a second antenna port to the first time-frequency resource; wherein the first time-frequency resource corresponds to one time domain symbol and one carrier, and the carrier comprises 157 continuous subcarriers; or a module for mapping a first channel measurement reference signal of a first antenna port to a second time-frequency resource and mapping a second channel measurement reference signal of a second antenna port to the second time-frequency resource; wherein the second time-frequency resource corresponds to two time domain symbols and one carrier, and the carrier comprises 157 continuous subcarriers; a module for transmitting the first channel measurement reference signal through the first antenna port and transmitting the second channel measurement reference signal through the second antenna port.

38. The communication apparatus of claim 37, wherein The communication device is further used for implementing the method according to any one of claims 2-36.

39. The communication apparatus according to claim 37 or 38, wherein, The communication device further comprises a Bluetooth module for implementing transmission of a Bluetooth signal and / or a Wi-Fi module for implementing transmission of a Wi-Fi signal, and one or more of the star flash module, the Bluetooth module or the Wi-Fi module share a radio frequency (RF) unit.

40. The communication apparatus according to any of claims 37-39, wherein, The star flash module and the Wi-Fi module for implementing transmission of a Wi-Fi signal are located in different subsystems of the communication device, and a subsystem of the star flash module and a subsystem of the Wi-Fi module are integrated in the communication device with at least one of the following: a Bluetooth system, a star low energy (SLE) system, a global navigation satellite system (GNSS), an always-on system, a power management unit (PMU), a clock management unit (CMU), a flash memory, an application system, an audio system.

41. The communication apparatus according to any one of claims 37-40, wherein, The star flash module and a Wi-Fi module for implementing Wi-Fi signal transmission are located in the same subsystem of the communication device, and the subsystem of the star flash module and the Wi-Fi module is integrated in the communication device with at least one of the following: a Bluetooth system, a star flash low power consumption SLE system, a global navigation satellite system GNSS, an always-on system, a power management unit PMU, a clock management unit CMU, a flash memory, an application system, and an audio system.

42. The communication apparatus according to any of claims 37-41, characterized by The communication device further comprises a Bluetooth module for implementing Bluetooth signal transmission and / or a Wi-Fi module for implementing Wi-Fi signal transmission, and at least one of the Bluetooth module or the Wi-Fi module coexists with the star flash module through different antennas, and the coexistence strategy comprises at least one of the following: frequency division multiplexing, code division multiplexing, time division multiplexing, channel avoidance, or aggregated scheduling.

43. The communication apparatus according to any one of claims 37-42, wherein, The communication device further comprises a Bluetooth module for implementing Bluetooth signal transmission and / or a Wi-Fi module for implementing Wi-Fi signal transmission, and at least one of the Bluetooth module or the Wi-Fi module coexists with the star flash module through the same antenna, and the coexistence strategy comprises at least one of the following: frequency division multiplexing, code division multiplexing, time division multiplexing, software static strategy, or packet transmission arbitration PTA strategy.

44. A communications device, characterized by The communication device comprises a processor; the processor is configured to run computer programs or instructions, so that the communication method as claimed in any one of claims 1-36 is executed.

45. A communications device, characterized by The communication device comprises an interface circuit and a logic circuit; the interface circuit is configured to input and / or output information; and the logic circuit is configured to execute the communication method as claimed in any one of claims 1-36, process and / or generate the information according to the information.

46. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions or programs, when the computer instructions or programs are run on a computer, so that the communication method as claimed in any one of claims 1-36 is executed.

47. A computer program product, characterised in that, The computer program product comprises computer instructions; when part or all of the computer instructions are run on a computer, so that the communication method as claimed in any one of claims 1-36 is executed.

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