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CN-122002609-A - Communication method and device

CN122002609ACN 122002609 ACN122002609 ACN 122002609ACN-122002609-A

Abstract

The application provides a communication method and a device, and relates to the field of communication, wherein the communication method comprises the steps of firstly receiving first information from first network equipment in a first cell, wherein the first information is used for indicating a first frequency domain position, the first frequency domain position is the frequency domain position of random access time of a second cell of second network equipment, the first frequency domain position is positioned in a first bandwidth, and the first bandwidth is positioned in the bandwidth of an uplink carrier; and then transmitting a first signal for requesting a system information block of the second cell to the second network device according to the first information. And the quality of the signal of the physical random access channel sent by the terminal is improved.

Inventors

  • LI JUN
  • HUA MENG
  • Louis Madier

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (15)

  1. 1. A communication method applied to a terminal, comprising: Receiving first information from a first network device in a first cell, wherein the first information is used for indicating a first frequency domain position, the first frequency domain position is a frequency domain position of a random access time of a second cell of a second network device, the first frequency domain position is located in a first bandwidth, and the first bandwidth is located in a bandwidth of an uplink carrier; And sending a first signal to the second network equipment according to the first information, wherein the first signal is used for requesting a system information block of the second cell.
  2. 2. The method according to claim 1, wherein the method further comprises: Second information is received, the second information indicating a switching time for switching from transmitting the first signal to receiving a first response of the first signal.
  3. 3. A communication method applied to a first network device, comprising: Acquiring first information, wherein the first information is used for indicating a first frequency domain position, the first frequency domain position is a frequency domain position of random access time of a second cell of second network equipment, the first frequency domain position is located in a first bandwidth, and the first bandwidth is located in a bandwidth of an uplink carrier; and sending the first information to a terminal.
  4. 4. A method according to claim 3, characterized in that the method further comprises: And transmitting second information, wherein the second information is used for indicating switching time from the terminal to receive the first response of the first signal.
  5. 5. A communication method applied to a terminal, comprising: receiving configuration information from first network equipment in a first cell, wherein the configuration information is configuration information of a physical random access channel; And sending a first signal to a second network device according to the configuration information, wherein the first signal is used for requesting a system information block of a second cell of the second network device, and generating a starting frequency domain resource of an uplink bandwidth part adopted by the first signal as a starting frequency domain resource of an uplink carrier.
  6. 6. The method of claim 5, wherein the configuration information further comprises first information, the first information being used to indicate a first frequency domain location, the first frequency domain location being a frequency domain location of a random access occasion of a second cell of the second network device, the first frequency domain location being in a first bandwidth, the first bandwidth being in a bandwidth of an uplink carrier.
  7. 7. The method of any of claims 1-4, or 6, wherein a center frequency point of the first bandwidth coincides with a center frequency point of a downstream bandwidth portion.
  8. 8. The method of any of claims 1-4, or 6, wherein a size of a downstream bandwidth portion is the same as a size of the first bandwidth.
  9. 9. The method of any of claims 1-4, or 6, wherein a starting resource block of the first bandwidth is consistent with a starting resource block of the uplink carrier in a frequency domain, or wherein a ending resource block of the first bandwidth is consistent with an ending resource block of the uplink carrier in a frequency domain.
  10. 10. The method of any of claims 1-4, or 6, wherein a starting resource block of the first bandwidth coincides with a starting resource block of the random access occasion in the frequency domain, or wherein a terminating resource block of the first bandwidth coincides with a terminating resource block of the random access occasion in the frequency domain.
  11. 11. The method of any of claims 1-4, or 6-10, wherein the first information is used to indicate the first bandwidth.
  12. 12. A communication device comprising means for performing the method of any of claims 1-4, or comprising means for performing the method of any of claims 5-6, or comprising means for performing the method of any of claims 7-11.
  13. 13. A communication device comprising a processor for supporting the communication device to perform the method of any of claims 1-11.
  14. 14. A computer readable storage medium storing computer instructions which, when executed, cause the method of any one of claims 1-11 to be performed.
  15. 15. A computer program product, characterized in that it, when run on a computer, causes the method according to any one of claims 1-11 to be performed.

Description

Communication method and device Technical Field The present application relates to the field of communications, and in particular, to a communication method and apparatus. Background In a wireless communication system, a system information block 1 carries a plurality of key information such as cell selection, access control, resource allocation and the like, which is an important basis for a terminal to access a network. In the past, the system information block 1 would be broadcast according to a fixed period, so as to ensure that the terminal can acquire relevant information in time. However, with the continuous development of wireless communication technology, the network load is continuously changed, the demands of users are increasingly diversified, and a series of problems of low resource utilization rate, high energy consumption and the like are gradually highlighted by the periodic broadcasting mode. To effectively solve these problems, the concept of transmitting the system information block 1 on demand has been developed. The key point is that when a terminal needs to access the network, the related information of the system information block 1 is sent. Therefore, the utilization efficiency of resources can be obviously improved, the energy consumption of the whole system can be reduced, and the use experience of a user can be optimized. The technology of transmitting the system information block 1 according to the need not only can improve the resource utilization rate and the energy efficiency of the system, but also can better meet the development requirements of future wireless communication systems. Therefore, this technology is becoming a research hotspot for which the wireless communication field is attracting attention, and is expected to be widely used in future communication standards. At present, the configuration of the physical random access channel sent by the terminal for requesting the system information block 1 is not perfect, so that the signal quality of the physical random access channel sent by the terminal is low. Disclosure of Invention The application provides a communication method and a communication device, which are used for improving the quality of a signal of a physical random access channel sent by a terminal. In order to achieve the above purpose, the application adopts the following technical scheme: In a first aspect, a communication method is provided, where the method is applied to a terminal, and the execution body of the method may be the terminal, or a component or an apparatus (such as a processor, a chip, or a chip system) applied to the terminal, or a logic module or software capable of implementing all or part of the functions of the terminal. The communication method includes the steps of firstly receiving first information from a first network device in a first cell, wherein the first information is used for indicating a first frequency domain position, the first frequency domain position is the frequency domain position of a random access opportunity of a second cell of a second network device, the first frequency domain position is located in a first bandwidth, the first bandwidth is located in the bandwidth of an uplink carrier, and then sending a first signal for requesting a system information block of the second cell to the second network device according to the first information. In the first aspect, the network device covering the first cell (i.e. the first network device) may send first information indicating a first frequency domain position located in a bandwidth of the uplink carrier to the terminal, so that the terminal may send a first signal requesting a system information block of the second cell based on the first information, and the terminal may send a first signal with higher quality because the first bandwidth where the first frequency domain position is located in the bandwidth of the uplink carrier. In one possible design, the method further includes receiving second information indicating a switching time for switching from transmitting the first signal to receiving the first response of the first signal. In the design, the first network equipment indicates the switching time to the terminal based on the second information, so that the terminal can clearly determine the switching time, the terminal is convenient to prepare to receive the first signal in advance, the waiting time is reduced, and the communication efficiency is improved. Or the communication method can further comprise the steps of receiving configuration information from the first network device in the first cell, wherein the configuration information is configuration information of a physical random access channel, sending a first signal to the second network device according to the configuration information, wherein the first signal is used for requesting a system information block of the second cell of the second network device, and generating a starting freque