WO2021031777A1 - Procédé d'envoi d'un signal de référence de sondage et procédé de réception d'un signal de référence de sondage, terminal, et dispositif de réseau - Google Patents

Procédé d'envoi d'un signal de référence de sondage et procédé de réception d'un signal de référence de sondage, terminal, et dispositif de réseau Download PDF

Info

Publication number
WO2021031777A1
WO2021031777A1 PCT/CN2020/103509 CN2020103509W WO2021031777A1 WO 2021031777 A1 WO2021031777 A1 WO 2021031777A1 CN 2020103509 W CN2020103509 W CN 2020103509W WO 2021031777 A1 WO2021031777 A1 WO 2021031777A1
Authority
WO
WIPO (PCT)
Prior art keywords
srs
srs resource
resource
symbol interval
configuration information
Prior art date
Application number
PCT/CN2020/103509
Other languages
English (en)
Chinese (zh)
Inventor
胡丽洁
王飞
徐晓东
王启星
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Publication of WO2021031777A1 publication Critical patent/WO2021031777A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency

Definitions

  • the present disclosure relates to the field of mobile communication technology, and in particular to a method for sending, receiving, a terminal, and a network device of a sounding reference signal.
  • a terminal such as a UE
  • the coverage of a cell can be expanded by means of a remote radio head (RRH).
  • RRH remote radio head
  • RRHs Taking high-speed rail as an example, multiple RRHs belonging to the same cell are deployed along the high-speed rail track. These RRHs send data to the terminal at the same time.
  • the single frequency network Single Frequency Network, SFN
  • SFN Single Frequency Network
  • the terminal performs channel estimation, equalization, demodulation and decoding of the multipath data to determine whether the received data is correct. In the above receiving process, it is difficult for the terminal to distinguish which RRH each path comes from.
  • FIG. 1 the network coverage scenarios of RRH1 to RRH3 deployed along the high-speed rail track are shown.
  • the same data sent by the two nearest RRHs usually experience similar and opposite frequency deviations when they reach the terminal on the train.
  • the signal strengths of the two RRHs are close and the pilots used are exactly the same, it is difficult for the terminal to perform effective frequency offset estimation and compensation, resulting in poor channel estimation performance and greatly reduced probability of correct decoding.
  • RRH is used to estimate the uplink frequency offset, and the frequency offset pre-compensation is performed before the data is sent.
  • RRH1 estimates that the uplink frequency offset of the terminal is a negative frequency offset, so it performs reverse frequency offset pre-compensation before downlink transmission, that is, adds a positive frequency offset. In this way, when the signal experiences a negative frequency offset and arrives at the terminal, the frequency offset will be partially or completely offset.
  • the RRH2 also performs a similar frequency offset pre-compensation operation, so that when the signal reaches the terminal, the frequency offset in the positive and negative directions is very small, and the demodulation performance is improved.
  • the current network usually estimates the uplink frequency offset based on the Demodulation Reference Signal (DMRS) of the uplink traffic channel for pre-compensation of the frequency offset.
  • DMRS Demodulation Reference Signal
  • the DMRS depends on the transmission of the uplink traffic channel, and the corresponding DMRS is sent only when there is uplink traffic channel scheduling.
  • At least one embodiment of the present disclosure provides a sounding reference signal SRS sending method, receiving method, terminal, and network equipment, and a symbol interval is introduced between the repeatedly sent SRS symbols to achieve a more accurate uplink frequency offset based on SRS It is estimated to provide support.
  • At least one embodiment provides a sounding reference signal SRS sending method, which is applied to a terminal, and includes:
  • the SRS is sent to the network.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
  • the subcarrier spacing of adjacent resource elements (resource elements, RE) in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: The subcarrier spacing of adjacent resource elements RE in the frequency domain;
  • the frequency domain position of at least one symbol mapped by the SRS resource is determined.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the embodiment of the present disclosure also provides a sounding reference signal SRS receiving method, which is applied to network equipment, and includes:
  • the terminal Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the frequency domain position of at least one symbol mapped by the SRS resource is determined.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the method further includes:
  • the embodiment of the present disclosure also provides a terminal, which includes:
  • a receiving module configured to receive first configuration information of an SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
  • a mapping determining module configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
  • the sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
  • the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the embodiment of the present disclosure also provides a terminal, which includes a transceiver and a processor, wherein,
  • the transceiver is configured to receive first configuration information of SRS resources sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
  • the processor is configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval;
  • the transceiver is also configured to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the processor is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; and according to the frequency hopping of the SRS resource at each hop.
  • the start symbol mapped on the resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the processor is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the embodiments of the present disclosure also provide a terminal, which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
  • a terminal which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
  • the program is executed by the processor, the above The steps of the sounding reference signal SRS transmission method described above.
  • the embodiment of the present disclosure also provides a network device, which includes:
  • a sending module configured to send first configuration information of the SRS resource to the terminal, where the first configuration information includes the first symbol interval between repeated symbols in the SRS resource;
  • a mapping determination module configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
  • the receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
  • the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the network equipment further includes:
  • the frequency offset estimation unit is configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
  • the embodiment of the present disclosure also provides a network device, which includes a transceiver and a processor, wherein:
  • the transceiver is configured to send first configuration information of SRS resources to a terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
  • the processor is configured to determine, according to the first symbol interval, the mapping mode of the SRS resource in the time slot;
  • the transceiver is further configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the processor is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; and according to the frequency hopping of the SRS resource at each hop.
  • the start symbol mapped on the resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the processor is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the processor is further configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
  • the embodiments of the present disclosure also provide a network device, which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
  • a network device which includes: a processor, a memory, and a program stored on the memory and capable of running on the processor.
  • At least one embodiment provides a computer-readable storage medium having a program stored on the computer-readable storage medium, and when the program is executed by a processor, it implements the method described above. step.
  • the sounding reference signal sending method, receiving method, terminal, and network equipment provided by the embodiments of the present disclosure introduce a symbol interval between repeatedly sent SRS symbols, which provides support for SRS-based uplink frequency offset estimation .
  • the network-side device may also perform uplink frequency offset estimation based on the symbols with the first symbol interval in the SRS sent by the terminal, which improves the accuracy of the uplink frequency offset estimation based on the SRS.
  • Figure 1 is a schematic diagram of a network coverage scenario of an RRH deployed along a high-speed rail track in related technologies
  • FIG. 2 is a schematic diagram of an application scenario of an embodiment of the disclosure
  • FIG. 3 is a flowchart of a sounding reference signal sending method provided by an embodiment of the disclosure.
  • FIG. 8 is a flowchart of a sounding reference signal receiving method provided by an embodiment of the disclosure.
  • FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure.
  • FIG. 10 is a schematic diagram of another structure of a terminal provided by an embodiment of the disclosure.
  • FIG. 11 is a schematic diagram of a structure of a network device provided by an embodiment of the disclosure.
  • FIG. 12 is a schematic diagram of another structure of a network device provided by an embodiment of the disclosure.
  • LTE Long Time Evolution
  • LTE-A Long Time Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • the CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA).
  • UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants.
  • the TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM).
  • OFDMA systems can implement radios such as UltraMobile Broadband (UMB), Evolved UTRA (Evolution-UTRA, E-UTRA), IEEE 802.16 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. technology.
  • UMB UltraMobile Broadband
  • Evolution-UTRA Evolved UTRA
  • E-UTRA Evolved UTRA
  • IEEE 802.16 Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 Flash-OFDM
  • Flash-OFDM Flash-OFDM
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
  • the technology described in this article can be used for the systems and radio technologies mentioned above as well as other systems and radio technologies.
  • the following description describes the NR system for exemplary purposes, and NR terminology is used in most of the description below, although these techniques can also be applied to applications other than NR system applications.
  • the wireless communication system includes a terminal 21 and a network device 22.
  • the terminal 21 may also be referred to as a user terminal or user equipment (User Equipment, UE), and the terminal 21 may be a mobile phone, a tablet (Tablet Personal Computer), a laptop computer (Laptop Computer), or a personal digital assistant (Personal Digital Assistant).
  • PDA mobile Internet device
  • MID mobile Internet Device
  • Wearable Device wearable device
  • vehicle-mounted equipment it should be noted that the specific type of terminal 21 is not limited in the embodiments of the present disclosure .
  • Network device 22 may be the RRH, a base station or core network element, wherein, the base station may be a fifth-generation (5 th generation, 5G) and later a base station (e.g.: gNB, 5G NR NB, etc.), or other communication systems
  • the base station for example: eNB, wireless local area network (Wireless Local Area Network, WLAN) access point, or other access points, etc.
  • the base station can be called Node B, evolved Node B, access point, base transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), extended service set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, Wireless Fidelity (WiFi) node, RRH or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not Limited to specific
  • the base station may communicate with the terminal 21 under the control of the base station controller.
  • the base station controller may be a part of the core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link.
  • the wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signals, control channels, etc.), overhead information, data, and so on.
  • the base station can wirelessly communicate with the terminal 21 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of an access point can be divided into sectors that constitute only a part of the coverage area.
  • the wireless communication system may include different types of base stations (for example, macro base stations, micro base stations, or pico base stations).
  • the base station can also utilize different radio technologies, such as cellular or WLAN radio access technologies.
  • the base stations can be associated with the same or different access networks or operator deployments.
  • the coverage areas of different base stations may overlap.
  • the communication link in the wireless communication system may include an uplink for carrying uplink (UL) transmission (for example, from the terminal 21 to the network device 22), or for carrying a downlink (DL) Transmission (for example, from network device 22 to terminal 21) downlink.
  • UL transmission may also be referred to as reverse link transmission
  • DL transmission may also be referred to as forward link transmission.
  • Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both.
  • uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.
  • the uplink frequency offset estimation in the high-speed rail scenario depends on the DMRS of the uplink traffic channel, and the DMRS is only sent when there is uplink traffic channel scheduling. Therefore, it is difficult to achieve a stable and reliable uplink frequency based on the DMRS. Partial estimate.
  • SRS Sounding Reference Signal
  • the number of repeated transmissions of the SRS R can be configured to 2 or 4 times through the network.
  • the number of SRS symbols Ns can also be configured. among them:
  • each SRS port uses the same subcarrier for transmission on all Ns symbols;
  • the embodiments of the present disclosure improve SRS transmission, and introduce a symbol interval between repeated SRS symbols, which provides support for more accurate uplink frequency offset estimation based on SRS.
  • the network-side device may also perform uplink frequency offset estimation based on the symbols with the first symbol interval in the SRS sent by the terminal, which improves the accuracy of the uplink frequency offset estimation based on the SRS.
  • the SRS sending method provided by the embodiment of the present disclosure when applied to the terminal side, includes:
  • Step 31 The terminal receives first configuration information of the SRS resource sent by the network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource.
  • the embodiment of the present disclosure configures the first symbol interval between SRS symbols repeatedly sent by the terminal through the first configuration information.
  • the symbol interval refers to the interval between two symbols, and the interval is expressed in units of symbols.
  • the symbol interval between two symbols is 0, which means that the time domain positions of the two symbols are the same;
  • the symbol interval between two symbols is 1, which means that the time domain positions of the two symbols are adjacent; for example, two
  • the symbol interval between the two symbols is 2, which means that the time domain positions of the two symbols are not adjacent, and there is another symbol between them.
  • the first symbol interval may be an integer greater than or equal to 1, that is, there is at least 1 symbol interval between adjacent SRS symbols that are repeatedly sent. Therefore, the first symbol interval in the embodiment of the present disclosure is an integer greater than one.
  • Figure 4 shows a schematic diagram of the interval of repeatedly transmitted SRS symbols, where each rectangle filled with a pattern in Figure 4 represents one SRS symbol, and the left side of Figure 4 is an example of two SRS symbols repeatedly transmitted in the related art, namely The repetitively transmitted SRS symbols are continuous.
  • the right side of FIG. 4 is a schematic diagram of two repetitively transmitted SRS symbols improved in the embodiment of the present disclosure. It can be seen that the symbol interval between the two SRS symbols is 2. There is another symbol between them.
  • the first symbol interval is 2 to 5 symbols. It is assumed here that the SRS is configured with a maximum of 6 symbols, where, when 6 symbols are configured, the symbol interval between the first SRS symbol and the second SRS symbol is a maximum of 5 symbols.
  • Step 32 The terminal determines the mapping mode of the SRS resource in the time slot according to the first symbol interval.
  • the terminal determines the mapping manner of the SRS resource in the time slot according to the first symbol interval, for example, determines at least one symbol mapped by the SRS resource in the time slot, so as to determine that the SRS resource is in the time domain The mapped symbol position.
  • Step 33 The terminal sends an SRS to the network according to the mapping manner of the SRS resource in the time slot.
  • the terminal may perform SRS symbols according to the mapping mode of SRS resources on the time slot, such as the mapped symbols.
  • the SRS transmitted by the terminal includes repeated transmission of SRS symbols, and the repeated transmission At least one symbol is spaced between adjacent SRS symbols.
  • the embodiment of the present disclosure introduces a symbol interval between the repeatedly sent SRS symbols, which is convenient for the network equipment to estimate the uplink frequency offset based on the repeatedly sent SRS symbols. Since there is a certain interval between the SRS symbols, it is more convenient to implement SRS-based Provides support for accurate uplink frequency offset estimation.
  • the first configuration information may further include: the first symbol between the start symbols on two adjacent frequency hopping frequency domain resources Two symbol interval.
  • the terminal may determine the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop according to the second symbol interval; and, according to the SRS The start symbol of the resource mapping on the frequency hopping resource of each hop, and the first symbol interval, determine the time domain position of other symbols mapped by the SRS resource on the frequency hopping resource of each hop, so that the SRS resource can be determined The time domain position of each symbol being mapped.
  • Figures 5 to 6 show two example diagrams of frequency hopping in a time slot. Each rectangle filled with patterns in Figures 5 to 6 represents an SRS symbol, and Band1 and Band2 represent two frequency hopping in the time slot. The frequency domain location where the resource is located.
  • the left side of Figures 5 to 6 are examples of frequency hopping of two SRS symbols repeatedly sent in the related art. It can be seen that the SRS symbols on each frequency hopping resource and all frequency hopping resources are in the time domain (lateral direction). ) Are all continuous.
  • the right side of Figs. 5 to 6 are schematic diagrams of retransmitted SRS symbols improved by the embodiments of the present disclosure. It can be seen that there is one other symbol between two SRS symbols of the same frequency hopping in Fig.
  • the symbol interval is 2; and the start symbol of the SRS on the frequency hopping Band1 is symbol #1, and the start symbol of the SRS on the frequency hopping Band2 is symbol #2, so the second symbol interval is 1.
  • the two SRS symbols of the same frequency hopping in FIG. 6 are separated by 2 other symbols, that is, the first symbol interval is 3; and the start symbol of the SRS on the frequency hopping Band1 is symbol #1, on the frequency hopping Band2 The start symbol of the SRS is symbol #3, so the second symbol interval is 2.
  • the embodiments of the present disclosure can help the network side obtain a more accurate uplink frequency offset estimation result.
  • the correlation value of the two columns is obtained to obtain the phase ⁇ , which corresponds to 2pi*fd* ⁇ t.
  • the larger the time interval ⁇ t the more accurate the estimation of the frequency offset fd.
  • the comb factor can be set to an integer greater than 4.
  • each resource block (RB) has only one RE for SRS transmission, as shown on the right side of FIG. 7.
  • the subcarrier spacing of adjacent resource elements (RE) in the SRS resource in the frequency domain may be a predefined value, or it may be configured through the first configuration information.
  • the first configuration information further includes: the subcarrier spacing of adjacent resource elements RE in the SRS resource in the frequency domain.
  • the terminal may also determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the sub-carrier spacing may be an integer greater than 4.
  • the embodiments of the present disclosure can increase the capacity of SRS, which is particularly suitable for scenarios where users are concentrated, such as high-speed rail.
  • the reasons are:
  • the uplink transmission power of the terminal is limited.
  • the power spectral density of a single RE needs to be guaranteed. Therefore, as the RE density of the SRS decreases, the bandwidth of sounding will be wider with the same power spectral density per RE.
  • the UE can detect 24 RBs at a time, so that it only takes 10ms to complete the detection of the full bandwidth. Therefore, it can accommodate from the time dimension and frequency domain dimension More UEs perform sounding and increase the SRS capacity, which is very beneficial for scenarios with a large number of users such as high-speed rail.
  • the embodiments of the present disclosure can be configured through radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the repeated transmission symbol interval (the first symbol interval ) Configuration/the adjacent two-hop start symbol interval (the second symbol interval), in addition, the frequency domain interval (the subcarrier interval) of adjacent REs for SRS transmission can be introduced through RRC signaling configuration, which The value can be an integer greater than 4.
  • an embodiment of the present disclosure provides an SRS receiving method, which can be applied to a network device side.
  • the network device may be a base station or an RRH or other device.
  • the receiving method includes:
  • Step 81 The network device sends first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource.
  • Step 82 The network device determines a mapping manner of the SRS resource in the time slot according to the first symbol interval.
  • Step 83 The network device receives the SRS sent by the terminal according to the mapping manner of the SRS resource in the time slot.
  • the network device of the embodiment of the present disclosure can receive the SRS with the first symbol interval, thereby providing support for using the SRS to estimate the uplink frequency offset.
  • the network device can also perform uplink frequency offset estimation according to the received repetitive symbols of the SRS, so as to obtain a more accurate frequency offset estimation result, and use the obtained frequency offset estimation result to perform the frequency offset estimation of the transmitted data. Partial pre-compensation processing can improve the accuracy of data decoding and improve data transmission efficiency.
  • the first configuration information further includes: the second symbol interval between the start symbols on two adjacent frequency hopping frequency domain resources;
  • the network device may determine the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop according to the second symbol interval; and, according to the SRS The start symbol of the resource mapping on the frequency hopping resource of each hop and the first symbol interval determine the time domain position of other symbols mapped by the SRS resource on the frequency hopping resource of each hop.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain may be a predefined value, or the first configuration information may further include: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain.
  • the frequency domain position of at least one symbol mapped by the SRS resource may also be determined according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the embodiments of the present disclosure also provide a device for implementing the above method.
  • an embodiment of the present disclosure provides a terminal 90, including:
  • a receiving module configured to receive first configuration information of an SRS resource sent by a network, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
  • a mapping determining module configured to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
  • the sending module is used to send SRS to the network according to the mapping mode of the SRS resource in the time slot.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
  • the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the terminal 1000 includes a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface, where:
  • the terminal 1000 further includes: a program that is stored in the memory 1003 and can be run on the processor 1001. When the program is executed by the processor 1001, the following steps are implemented:
  • the SRS is sent to the network.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 1002 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the user interface 1004 may also be an interface that can externally and internally connect the required equipment.
  • the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.
  • the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the frequency domain position of at least one symbol mapped by the SRS resource is determined.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • an embodiment of the present disclosure provides a schematic structural diagram of a network device 110, and the network device 110 includes:
  • a sending module configured to send first configuration information of the SRS resource to the terminal, where the first configuration information includes the first symbol interval between repeated symbols in the SRS resource;
  • a mapping determination module configured for the network device to determine a mapping manner of the SRS resource in a time slot according to the first symbol interval
  • the receiving module is configured to receive the SRS sent by the terminal according to the mapping mode of the SRS resource in the time slot.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the mapping determining module is further configured to determine, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop; according to the hop of the SRS resource at each hop.
  • the start symbol mapped on the frequency resource and the first symbol interval determine the time domain position of other symbols mapped on the frequency hopping resource of each hop by the SRS resource.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the mapping determining module is further configured to determine the frequency domain position of at least one symbol mapped by the SRS resource according to the subcarrier interval.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the network equipment further includes:
  • the frequency offset estimation unit is configured to, after receiving the SRS sent by the terminal, perform uplink frequency offset estimation according to the received repetitive symbols of the SRS.
  • an embodiment of the present disclosure provides another schematic structural diagram of a network device, including: a processor 1201, a transceiver 1202, a memory 1203, and a bus interface, where:
  • the network device 1200 further includes: a program that is stored in the memory 1203 and can run on the processor 1201, and when the program is executed by the processor 1201, the following steps are implemented:
  • the terminal Sending first configuration information of the SRS resource to the terminal, where the first configuration information includes a first symbol interval between repeated symbols in the SRS resource;
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1203 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 1202 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 when performing operations.
  • the first configuration information further includes: a second symbol interval between start symbols on two adjacent frequency-hopping frequency domain resources;
  • the network device determines, according to the second symbol interval, the time domain position of the start symbol mapped by the SRS resource on the frequency hopping resource of each hop;
  • the time domain positions of other symbols mapped by the SRS resource on the frequency hopping resource of each hop are determined.
  • the subcarrier spacing of the adjacent resource elements RE in the SRS resource in the frequency domain is a predefined value
  • the first configuration information further includes: adjacent resource elements in the SRS resource The sub-carrier spacing of the RE in the frequency domain;
  • the frequency domain position of at least one symbol mapped by the SRS resource is determined.
  • the first symbol interval is an integer greater than 1, and/or the subcarrier interval is an integer greater than 4.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several
  • the instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the SRS sending method or the SRS receiving method described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer readable storage medium. When executed, it may include the processes of the above-mentioned method embodiments.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
  • modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to implement Described functions in other electronic units or combinations thereof.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processor
  • DSP Device Digital Signal Processing Device
  • DSPD Digital Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'envoi de signal de référence de sondage et un procédé de réception de signal de référence de sondage, un terminal et un dispositif de réseau. Le procédé comprend les étapes suivantes : un terminal reçoit des premières informations de configuration, envoyées sur un réseau, d'une ressource SRS, les premières informations de configuration comprenant un premier intervalle de symboles entre des symboles répétés dans la ressource SRS ; le terminal détermine, selon le premier intervalle de symboles, un mode de mise en correspondance de la ressource SRS dans un créneau temporel ; et le terminal envoie, selon le mode de mise en correspondance de la ressource SRS dans le créneau temporel, un SRS au réseau.
PCT/CN2020/103509 2019-08-16 2020-07-22 Procédé d'envoi d'un signal de référence de sondage et procédé de réception d'un signal de référence de sondage, terminal, et dispositif de réseau WO2021031777A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910758987.6 2019-08-16
CN201910758987.6A CN112398618B (zh) 2019-08-16 2019-08-16 探测参考信号的发送方法、接收方法、终端及网络设备

Publications (1)

Publication Number Publication Date
WO2021031777A1 true WO2021031777A1 (fr) 2021-02-25

Family

ID=74601926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/103509 WO2021031777A1 (fr) 2019-08-16 2020-07-22 Procédé d'envoi d'un signal de référence de sondage et procédé de réception d'un signal de référence de sondage, terminal, et dispositif de réseau

Country Status (2)

Country Link
CN (1) CN112398618B (fr)
WO (1) WO2021031777A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116528367A (zh) * 2022-01-21 2023-08-01 维沃移动通信有限公司 信息传输方法、装置、网络侧设备及终端

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104937861A (zh) * 2013-01-25 2015-09-23 Lg电子株式会社 在无线通信系统中测量基站之间的信道的方法和设备
WO2019098712A1 (fr) * 2017-11-16 2019-05-23 엘지전자 주식회사 Procédé de transmission et de réception de srs, et dispositif de communication associé
CN109802810A (zh) * 2017-11-17 2019-05-24 华为技术有限公司 发送探测参考信号srs的方法和装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013017016A (ja) * 2011-07-04 2013-01-24 Sharp Corp 基地局装置、移動局装置、通信システムおよび通信方法
CN105453463B (zh) * 2013-08-05 2018-04-03 Lg电子株式会社 在无线通信系统中从装置对装置终端发送信号的方法和设备
US20170048717A1 (en) * 2015-08-13 2017-02-16 Samsung Electronics Co., Ltd. Method and apparatus for communication in wireless communication system
CN110247748B (zh) * 2016-02-26 2021-06-22 北京佰才邦技术有限公司 探测参考信号的传输方法、装置及终端
CN106788927B (zh) * 2016-05-13 2019-09-17 北京展讯高科通信技术有限公司 Srs的发送方法及装置
CN108632005B (zh) * 2017-03-24 2023-12-15 华为技术有限公司 一种参考信号传输方法、装置及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104937861A (zh) * 2013-01-25 2015-09-23 Lg电子株式会社 在无线通信系统中测量基站之间的信道的方法和设备
WO2019098712A1 (fr) * 2017-11-16 2019-05-23 엘지전자 주식회사 Procédé de transmission et de réception de srs, et dispositif de communication associé
CN109802810A (zh) * 2017-11-17 2019-05-24 华为技术有限公司 发送探测参考信号srs的方法和装置

Also Published As

Publication number Publication date
CN112398618A (zh) 2021-02-23
CN112398618B (zh) 2022-03-29

Similar Documents

Publication Publication Date Title
JP6545910B2 (ja) 複数のトーンホッピング距離をもつ狭帯域ｐｒａｃｈ
WO2019214383A1 (fr) Procédé de configuration d'informations de quasi co-localisation, dispositif réseau, et équipement utilisateur
CN106797288B (zh) 用于毫米波无线通信的将ofdm和基于循环前缀的单载波合并的混合波形设计
JP6019005B2 (ja) 無線基地局、ユーザ端末及び無線通信方法
JP7001583B2 (ja) 端末、無線通信方法、基地局及びシステム
KR102137898B1 (ko) 무선 통신 네트워크에서의 시그널링을 관리하는 무선 디바이스, 무선 네트워크 노드 및 이의 수행 방법
CN110945821A (zh) 用于扩展的小区发现的技术
JP2016521076A (ja) デバイス・ツー・デバイスリレー選択のための方法および装置
EP3829242B1 (fr) Procédé et dispositif d'indication d'informations liées à l'espace
JP2017527204A (ja) 通信システムにおける測定の強化のための方法及び装置
JP2014143605A (ja) 無線基地局、ユーザ端末及び無線通信方法
KR20190126338A (ko) 신호를 전송하는 방법, 단말 장비 및 네트워크 장비
US20150036631A1 (en) Method for transmitting and receiving pilot signal, user equipment, and base station
EP3944693B1 (fr) Procédé d'économie d'énergie de terminal basé sur une partie de bande passante
US20200195399A1 (en) Radio communication system and reference signal transmission method
US11601894B2 (en) Network node and method for managing power of cell reference symbols
JP2021507571A (ja) 信号受信装置、方法及び通信システム
WO2021031777A1 (fr) Procédé d'envoi d'un signal de référence de sondage et procédé de réception d'un signal de référence de sondage, terminal, et dispositif de réseau
US11570762B2 (en) User equipment, and uplink transmission timing adjustment method
WO2013135185A1 (fr) Procédé de communication, équipement d'utilisateur et dispositif côté réseau
CN112448802A (zh) 一种解调参考信号的配置方法、终端及基站
Lee et al. A timing synchronization method for D2D communication in asynchronous cellular system
KR20170051187A (ko) 이동통신시스템에서 보호 구간을 이용해 신호를 송수신하는 방법 및 장치
KR20150124046A (ko) 스몰 셀 디스커버리 참조 신호 송수신 방법 및 장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20853896

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20853896

Country of ref document: EP

Kind code of ref document: A1