CN-122002564-A - Communication method, device, system and medium

CN122002564ACN 122002564 ACN122002564 ACN 122002564ACN-122002564-A

Abstract

The application discloses a communication method, a device, a system and a medium, relates to the technical field of communication, and aims to solve the problems of poor scheduling flexibility of signaling data and service data and low communication efficiency. In the embodiment of the application, the network side equipment transmits signaling data between the first frequency band and the terminal, and the network side equipment transmits service data between the second frequency band and the terminal, wherein the first frequency band and the second frequency band are different. Therefore, the scheduling decoupling of the signaling data and the service data is realized, the flexibility of the data scheduling of the signaling data and the service data is increased, and the communication efficiency is improved.

Inventors

TONG JIANFEI
JIAO LINGXIAO
YAN HONG
LIU XIANLING
LI JIFENG
XU XIAOFAN
HAO XUEKUN

Assignees

上海卫星互联网研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (14)

1. A communication method, applied to a network side device, the method comprising: And transmitting signaling data between a first frequency band and a terminal, and transmitting service data between a second frequency band and the terminal, wherein the first frequency band and the second frequency band are different.
2. The method of claim 1, wherein the transmitting signaling data with the terminal in the first frequency band comprises: receiving first signaling data sent by the terminal in a first sub-band, and sending second signaling data to the terminal in a second sub-band; the transmitting the service data with the terminal in the second frequency band comprises the following steps: and transmitting service data between the second frequency band and the terminal according to the second uplink and downlink time slot ratio for the second frequency band.
3. The method of claim 1, wherein the transmitting signaling data with the terminal in the first frequency band comprises: according to the first uplink and downlink time slot ratio for the first frequency band, signaling data are transmitted between the first frequency band and the terminal; the transmitting the service data with the terminal in the second frequency band comprises the following steps: and transmitting service data between the second frequency band and the terminal according to the second uplink and downlink time slot ratio for the second frequency band.
4. The method of claim 1, wherein the method further comprises, prior to the transmission of signaling data with the terminal in the first frequency band: Broadcasting a synchronization information block SSB and a system message in the first frequency band; and when receiving an access request sent by the terminal, establishing connection with the terminal.
5. A communication method, applied to a terminal, the method comprising: And transmitting signaling data between a first frequency band and network side equipment, and transmitting service data between a second frequency band and the network side equipment, wherein the first frequency band and the second frequency band are different.
6. The method of claim 5, wherein the transmitting signaling data with the network side device in the first frequency band comprises: Receiving second signaling data sent by the network side equipment in a second sub-band, and sending first signaling data to the network side equipment in a first sub-band; The transmitting the service data between the second frequency band and the network side equipment comprises the following steps: and transmitting service data between the second frequency band and the network side equipment according to a second uplink and downlink time slot ratio for the second frequency band.
7. The method of claim 5, wherein the transmitting signaling data with the network side device in the first frequency band comprises: Transmitting signaling data between the first frequency band and the network side equipment according to the first uplink and downlink time slot ratio for the first frequency band; The transmitting the service data between the second frequency band and the network side equipment comprises the following steps: and transmitting service data between the second frequency band and the network side equipment according to a second uplink and downlink time slot ratio for the second frequency band.
8. The method of claim 5, wherein the method further comprises, prior to the transmission of the signaling data between the first frequency band and the network side device: based on the synchronous information block SSB and the system information which are obtained by scanning on the first frequency band and broadcast by the network side equipment, sending an access request to the network side equipment, and establishing connection with the network side equipment.
9. The method of claim 8, wherein before the transmission of the service data between the second frequency band and the network side device, the method further comprises: Determining the frequency corresponding to the synchronous information block SSB and the system message, and obtaining a first Doppler frequency offset estimation value on the frequency; determining the ratio of the center frequency of the second frequency band to the frequency, and taking the product of the ratio and the first Doppler frequency offset estimation value as a second Doppler frequency offset estimation value; The transmitting the service data between the second frequency band and the network side equipment comprises the following steps: And compensating the service data to be transmitted according to the second Doppler frequency offset estimation value to obtain first service data, transmitting the first service data to the network side equipment in the second frequency band, and receiving the second service data from the network side equipment in the second frequency band.
10. A communication device comprising means or modules for performing the method according to any of claims 1-4 or means or modules for performing the method according to any of claims 5-9.
11. A communication device comprising one or more processors configured to perform the method of any of claims 1-4 or to perform the method of any of claims 5-9.
12. A communication system, characterized in that the communication system comprises a network-side device performing the method according to any of claims 1-4, and a terminal performing the method according to any of claims 5-9.
13. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program or instructions which, when executed by a communication device, implements the method according to any of claims 1-4 or implements the method according to any of claims 5-9.
14. A computer program product, characterized in that the computer program product, when called by a computer, causes the computer to perform the method according to any of claims 1-4 or to perform the method according to any of claims 5-9.

Description

Communication method, device, system and medium Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, system, and medium. Background The prior art communication technology is generally based on the standard of frequency division duplex (Frequency Division Duplex, FDD), i.e. uplink and downlink are transmitted simultaneously at different frequencies, respectively. In the FDD system, the uplink reception and the downlink transmission at the base station side can be performed simultaneously because the base station side operates at different frequencies. Based on the above, the base station side can adopt a structure of separating signaling data and service data, so that the signaling data and the service data can be flexibly and independently transmitted and received. However, due to the difficulty of finding paired spectrum in FDD system, the system of time division duplex (Time Division Duplex, TDD) is being studied as a candidate in communication system. If the TDD system is considered, that is, uplink and downlink are time-division transmitted on the same frequency. If the architecture of separating the signaling data and the service data is continuously adopted, the defect that the signaling data and the service data can only be transmitted and received simultaneously is overcome. Specifically, since uplink and downlink transmissions on the base station side are switched by the duplexer, all the signaling data and the service data on the base station can only be transmitted and received simultaneously, and when the signaling data is in the downlink or uplink receiving state, the service data can only be transmitted in the downlink or uplink receiving state. However, the signaling data generally requires more downlink timeslots, and the timeslot ratio of the service data is related to the service type, which has certain flexibility and regional characteristics. Therefore, the simultaneous transmission and reception of the signaling data and the service data limit the flexibility of data scheduling and reduce the communication efficiency. Disclosure of Invention The application provides a communication method, a device, equipment and a medium, which are used for solving the problems of poor scheduling flexibility and low communication efficiency of signaling data and service data in the prior art. In a first aspect, the present application provides a communication method, applied to a network side device, where the method includes: And transmitting signaling data between a first frequency band and a terminal, and transmitting service data between a second frequency band and the terminal, wherein the first frequency band and the second frequency band are different. In one possible implementation manner, the transmitting signaling data with the terminal establishing the connection in the first frequency band includes: receiving first signaling data sent by the terminal in a first sub-band, and sending second signaling data to the terminal in a second sub-band; the transmitting the service data with the terminal in the second frequency band comprises the following steps: and transmitting service data between the second frequency band and the terminal according to the second uplink and downlink time slot ratio for the second frequency band. In one possible implementation manner, the transmitting signaling data with the terminal in the first frequency band includes: according to the first uplink and downlink time slot ratio for the first frequency band, signaling data are transmitted between the first frequency band and the terminal; the transmitting the service data with the terminal in the second frequency band comprises the following steps: and transmitting service data between the second frequency band and the terminal according to the second uplink and downlink time slot ratio for the second frequency band. In a possible implementation manner, before the transmission of the signaling data between the first frequency band and the terminal, the method further includes: Broadcasting a synchronization information block SSB and a system message in the first frequency band; and establishing connection with the terminal when receiving an access request sent by the terminal, wherein the access request is sent to the network side equipment by the terminal based on the synchronous information block SSB and the system message obtained by scanning on the first frequency band. In a second aspect, the present application provides a communication method, the method being applied to a terminal, the method comprising: And transmitting signaling data between a first frequency band and network side equipment, and transmitting service data between a second frequency band and the network side equipment, wherein the first frequency band and the second frequency band are different. In one possible implementation manner, the transmitt