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CN-122028196-A - Association method of uplink reference signals and communication device

CN122028196ACN 122028196 ACN122028196 ACN 122028196ACN-122028196-A

Abstract

The application discloses an association method and a communication device of uplink reference signals, wherein the method comprises the steps that first network equipment generates first configuration information, and the first configuration information indicates association relations between uplink reference signals transmitted simultaneously on different carriers; the uplink reference signal common antenna port with the association relation or the uplink reference signal with the association relation has a phase difference; the first network device sends first configuration information to the terminal device. By implementing the application, the configuration of the large bandwidth uplink reference signal can be realized.

Inventors

  • HUANG SU
  • GAO XIN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20200928

Claims (20)

  1. 1. A method for associating uplink reference signals, the method comprising: Generating first configuration information, wherein the first configuration information indicates the association relation between uplink reference signal resource sets on different carriers; the association relationship between the uplink reference signal resource sets indicates that the associated uplink reference signals in the associated uplink reference signal resource sets are in association relationship with the uplink reference signals transmitted simultaneously; and sending the first configuration information to terminal equipment.
  2. 2. The method of claim 1, wherein the uplink reference signal common antenna port with the association relationship or the uplink reference signal with the association relationship has a phase difference, the uplink reference signal common antenna port with the association relationship means that the antenna ports of the uplink reference signal with the association relationship are the same antenna port, the same antenna port means that a channel carried by one antenna port on one symbol is estimated by a channel carried by another antenna port on another symbol, and the common antenna port means that the phases of the uplink reference signals with the association relationship are continuous.
  3. 3. The method according to claim 1 or 2, characterized in that the method further comprises: Generating second configuration information, wherein the second configuration information indicates the association relation between uplink reference signal resource sets on different carriers; and sending the second configuration information to the positioning management equipment.
  4. 4. A method according to claim 3, wherein the first configuration information and/or the second configuration information further indicates that the uplink reference signal with the association has a phase difference with respect to a common antenna port of the uplink reference signal with the association.
  5. 5. The method according to any one of claims 1 to 4, wherein, in the process of the terminal device sending the uplink reference signal having the association relationship, a phase difference between the uplink reference signals having the association relationship is a fixed value.
  6. 6. The method according to any one of claims 1 to 4, wherein when the uplink reference signal has multiple antenna ports, the same antenna port number of the uplink reference signal with the association relationship corresponds to the same antenna port.
  7. 7. The method according to any one of claims 1 to 6, wherein the first configuration information includes configuration information of a plurality of carriers, the configuration information of the carriers includes an index of the carriers and configuration information of a bandwidth portion BWP in the carriers, the configuration information of the BWP includes an index of the BWP and configuration information of an uplink reference signal resource set in the BWP, and the configuration information of the uplink reference signal resource set includes an index of the uplink reference signal resource set and configuration information of uplink reference signal resources in the uplink reference signal resource set; The configuration information of the first uplink reference signal resource set further comprises at least one first index information, the first index information comprises an index of a second carrier wave, an index of a second BWP in the second carrier wave and an index of a second uplink reference signal resource set in the second BWP, so that an association relationship exists between the first uplink reference signal resource set and at least one second uplink reference signal resource set, and the first uplink reference signal resource set and the at least one second uplink reference signal resource set are resource sets on different carriers configured by the first configuration information.
  8. 8. The method of claim 7, wherein the index of the second carrier comprises one or more of an index of a serving cell in which the second carrier is located, and indication information indicating whether the second carrier is a normal uplink carrier or a secondary uplink carrier of the serving cell in which the second carrier is located.
  9. 9. The method of claim 3, wherein the second configuration information comprises configuration information for a plurality of carriers, the configuration information for a carrier comprising an index for the carrier and configuration information for a set of uplink reference signal resources in the carrier, the configuration information for the set of uplink reference signal resources comprising the index for the set of uplink reference signal resources and configuration information for the set of uplink reference signal resources; The configuration information of the third uplink reference signal resource set further comprises at least one third index information, the third index information comprises an index of a fourth carrier wave and an index of a fourth uplink reference signal resource set in the fourth carrier wave, so as to indicate that an association relationship exists between the third uplink reference signal resource set and at least one fourth uplink reference signal resource set, and the third uplink reference signal resource set and at least one fourth uplink reference signal resource set are resource sets on different carrier waves configured by the second configuration information.
  10. 10. The method of claim 9, wherein the index of the fourth carrier comprises one or more of an index of a serving cell in which the fourth carrier is located, and indication information indicating whether the fourth carrier is a normal uplink carrier or a secondary uplink carrier of the serving cell in which the fourth carrier is located.
  11. 11. The method according to any one of claims 1-10, further comprising: And receiving capability information reported by the terminal equipment, wherein the capability information is used for indicating whether the terminal equipment supports a plurality of uplink reference signal common antenna ports which are transmitted simultaneously or not, or is used for indicating whether the terminal equipment supports a plurality of uplink reference signals which are transmitted simultaneously or not and has phase difference.
  12. 12. The method of claim 11, wherein the capability information is reported at a granularity of a band-by-band report, or a band-by-band group report, or a band-by-band within a band-by-band group report, or a subset of a band-by-band group within a band-by-band group report.
  13. 13. The method according to any one of claims 1-10, further comprising: Receiving first information sent by positioning management equipment; The first information is used for requesting the first network device to configure an uplink reference signal with a preset bandwidth, wherein the preset bandwidth is greater than 100 MHz or greater than 400MHz, or The first information is used for requesting the first network device to configure association relations between uplink reference signal resource sets on different carriers.
  14. 14. The method of claim 13, wherein the first information is further used to request that an uplink reference signal with an association co-antenna port or an uplink reference signal with an association have a phase difference.
  15. 15. A method for associating uplink reference signals, the method comprising: receiving first configuration information, wherein the first configuration information indicates the association relation between uplink reference signal resource sets on different carriers; the association relationship between the uplink reference signal resource sets indicates that the associated uplink reference signals in the associated uplink reference signal resource sets are in association relationship with the uplink reference signals transmitted simultaneously; and sending the uplink reference signals with the association relation.
  16. 16. The method of claim 15, wherein the uplink reference signal co-antenna port with the association relationship or the uplink reference signal with the association relationship has a phase difference, the uplink reference signal co-antenna port with the association relationship means that antenna ports of the uplink reference signal with the association relationship are the same antenna port, the same antenna port means that a channel carried by one antenna port on one symbol is inferred by a channel carried by another antenna port on another symbol, and the co-antenna port means that phases of the uplink reference signals with the association relationship are continuous.
  17. 17. The method according to claim 15 or 16, wherein the first configuration information further indicates that the uplink reference signal with association has a phase difference with respect to the common antenna port of the uplink reference signal with association.
  18. 18. The method according to any one of claims 15 to 17, wherein in the process of transmitting the uplink reference signals having the association relationship, a phase difference between the uplink reference signals having the association relationship is a fixed value.
  19. 19. The method according to any one of claims 15 to 17, wherein when the uplink reference signal has multiple antenna ports, the same antenna port corresponding to the same antenna port number of the uplink reference signal having the association relationship is used.
  20. 20. The method according to any one of claims 15 to 19, wherein the first configuration information includes configuration information of a plurality of carriers, the configuration information of the carriers includes an index of the carriers and configuration information of a bandwidth portion BWP in the carriers, the configuration information of the BWP includes an index of the BWP and configuration information of an uplink reference signal resource set in the BWP, and the configuration information of the uplink reference signal resource set includes an index of the uplink reference signal resource set and configuration information of uplink reference signal resources in the uplink reference signal resource set; The configuration information of the first uplink reference signal resource set further comprises at least one first index information, the first index information comprises an index of a second carrier wave, an index of a second BWP in the second carrier wave and an index of a second uplink reference signal resource set in the second BWP, so that an association relationship exists between the first uplink reference signal resource set and at least one second uplink reference signal resource set, and the first uplink reference signal resource set and the at least one second uplink reference signal resource set are resource sets on different carriers configured by the first configuration information.

Description

Association method of uplink reference signals and communication device The present application is a divisional application, the application number of the original application is 2020110458115, the original application date is 2020, 09, 28, and the whole content of the original application is incorporated by reference. Technical Field The present application relates to the field of positioning technologies, and in particular, to a method and a communication device for associating uplink reference signals. Background In a mobile communication system, positioning a terminal device is one of important functions. Current positioning techniques include downlink positioning techniques and uplink positioning techniques. The uplink positioning technology refers to that an uplink reference signal is sent by a terminal device to a network device. For example, the uplink reference signal may be a Sounding REFERENCE SIGNAL (SRS). The network device measures the uplink reference signal and sends the measurement result to the positioning management device. And determining the position information of the terminal equipment according to the measurement result by the positioning management equipment. However, in practice, it is found that the positioning accuracy of the positioning technology is not high in the low-frequency communication system at present, and the main reason is that the maximum bandwidth of a single uplink reference signal of the low-frequency NR communication system is 100MHz, and the positioning method accuracy based on the timing ranging is directly related to the bandwidth. In general, the larger the bandwidth, the higher the ranging accuracy. Therefore, how to enhance the existing uplink reference signal configuration structure to implement the configuration of the large bandwidth uplink reference signal, so as to improve the positioning accuracy is a problem to be solved in the present day. Disclosure of Invention The embodiment of the application provides an association method and a communication device of uplink reference signals, which can realize configuration of large-bandwidth uplink reference signals. In a first aspect, the application provides a method for associating uplink reference signals, which comprises the steps that first network equipment generates first configuration information, the first configuration information indicates association relations between uplink reference signals transmitted simultaneously on different carriers, the uplink reference signals with association relations share antenna ports or the uplink reference signals with association relations have phase differences, and the first network equipment transmits the first configuration information to terminal equipment. In the method described in the first aspect, the network side can configure the terminal device with a common antenna port between which uplink reference signals or configure which uplink reference signals have a phase difference therebetween. The common antenna port among the plurality of uplink reference signals indicates that the plurality of uplink reference signals experience identical channels, and can be equivalently regarded that the terminal equipment transmits a new uplink reference signal, and the bandwidth of the new uplink reference signal is equivalent to the sum of bandwidths of the plurality of uplink reference signals. Therefore, the common antenna port between the plurality of uplink reference signals can enlarge the signal bandwidth. Therefore, by configuring which uplink reference signals share the antenna port to the terminal device, the configuration of the uplink reference signals with large bandwidth can be realized. By configuring the terminal device with which uplink reference signals have a phase difference therebetween, the network device can estimate the phase difference between the uplink reference signals, and then compensate the channel phase of the uplink reference signals by the phase difference, so that the antenna ports are shared among the plurality of uplink reference signals, thereby expanding the signal bandwidth. Therefore, by configuring which uplink reference signals have a phase difference between them to the terminal device, configuration of the large bandwidth uplink reference signals can also be achieved. In one possible implementation, the first network device generates second configuration information, the second configuration information indicating an association between uplink reference signals simultaneously transmitted on different carriers, and the first network device transmits the second configuration information to the positioning management device. Based on the possible implementation manner, the association relationship between uplink reference signals simultaneously sent on different carriers can be indicated to the positioning management device through the second configuration information, so that the positioning management device can indicate