Search

EP-4489349-B1 - METHOD AND DEVICE FOR SIGNAL DETECTION

EP4489349B1EP 4489349 B1EP4489349 B1EP 4489349B1EP-4489349-B1

Inventors

  • TANG, HAI

Dates

Publication Date
20260513
Application Date
20160701

Claims (15)

  1. A method for signal detection, comprising: receiving (110), by a terminal from a first Transmission Point, TP, system configuration information, wherein the system configuration information comprises working frequency point information of a second TP, time synchronization information of the second TP, sub-carrier spacing information of the second TP, and configuration information on a synchronization signal of the second TP, and wherein the time synchronization information of the second TP comprises indication information for indicating whether the second TP is synchronous with the first TP, and the configuration information on the synchronization signal of the second TP comprises resource position information of the synchronization signal; and performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information.
  2. The method of claim 1, wherein the system configuration information further comprises at least one of the following information: system bandwidth information of the second TP, prefix information of a signal of the second TP, configuration information on structure of a sub-frames of the second TP, configuration information on uplink and downlink time slots of the second TP, configuration information on a reference signal of the second TP, Identifier, ID, information of the second TP or antenna configuration information of the second TP.
  3. The method of claim 1, wherein the time synchronization information of the second TP relative to the first TP further comprises a time synchronization offset of the second TP relative to the first TP.
  4. The method of claim 3, wherein performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information of the second TP comprises: responsive to indicating that the second TP is synchronous with the first TP, performing, by the terminal, the downlink signal detection of the second TP according to downlink timing of the first TP; or, determining, by the terminal, a detection window for the synchronization signal of the second TP according to the downlink timing of the first TP; performing, by the terminal, synchronization signal detection of the second TP in the detection window to obtain synchronization reference of the second TP; and performing, by the terminal, the downlink signal detection of the second TP according to the synchronization reference of the second TP.
  5. The method of claim 3 or 4, wherein performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information of the second TP comprises: responsive to indicating that the second TP is asynchronous with the first TP, detecting, by the terminal, the synchronization signal of the second TP to obtain synchronization reference of the second TP; and performing, by the terminal, the downlink signal detection of the second TP according to the synchronization reference of the second TP.
  6. The method of claim 1, wherein the configuration information on the synchronization signal of the second TP further comprises sequence information carried in the synchronization signal.
  7. The method of claim 6, wherein performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information of the second TP comprises: determining, by the terminal, at least one of time-frequency resource position or sequence information on the synchronization signal of the second TP according to at least one of the resource position information of the synchronization signal or the sequence information carried in the synchronization signal; detecting, by the terminal, the synchronization signal of the second TP according to at least one of the time-frequency resource position or sequence information to obtain synchronization reference of the second TP; and performing, by the terminal, the downlink signal detection of the second TP according to the synchronization reference of the second TP.
  8. The method of claim 2, wherein the configuration information on the reference signal of the second TP comprises at least one of the following information: configuration information on time-frequency resources of the reference signal, sequence information of the reference signal, configuration information on transmitting power of the reference signal or port configuration information of the reference signal.
  9. The method of claim 2 or 8, wherein the system configuration information of the second TP comprises the configuration information on the reference signal of the second TP, and performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information of the second TP comprises: determining, by the terminal, a configuration for the reference signal of the second TP according to the configuration information on the reference signal of the second TP; and performing, by the terminal, downlink Radio Resource Management, RRM, measurement of the second TP according to the configuration for the reference signal of the second TP; and the method further comprises: generating, by the terminal, an RRM measurement result; and sending, by the terminal, the RRM measurement result to the first TP; or, determining, by the terminal, whether the second TP is detected according to the RRM measurement result.
  10. The method of claim 1, wherein performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information of the second TP comprises: determining, by the terminal, a number of sub-carriers within a target bandwidth of the second TP according to the sub-carrier spacing information; and performing, by the terminal, the downlink signal detection of the second TP according to the number of sub-carriers within the target bandwidth.
  11. The method of claim 2, wherein the configuration information on structure of sub-frames of the second TP comprises at least one of: a number of Orthogonal Frequency Division Multiplexing, OFDM, symbols in a sub-frame, a number of Guard Periods, GPs, in the sub-frame, positions of the GPs in the sub-frame, or a number of different types of OFDM symbols in the sub-frame; wherein the system configuration information comprises the configuration information on structure of sub-frames of the second TP, and performing (120), by the terminal, downlink signal detection of the second TP according to the system configuration information of the second TP comprises: determining, by the terminal, a sub-frame structure of the second TP according to the configuration information on structure of sub-frames of the second TP; and performing, by the terminal, the downlink signal detection of the second TP according to the sub-frame structure.
  12. The method of any one of claims 1-11, wherein the first TP is a carrier for transmitting Long Term Evolution, LTE, data, and the second TP is a carrier for transmitting 5th-Generation, 5G, New Radio, NR, data.
  13. The method of any one of claims 1-12, further comprising: generating, by the terminal, a measurement result or a detection result for the downlink signal of the second TP; and sending, by the terminal, the measurement result or the detection result to the first TP.
  14. A method for signal detection, comprising: sending (210), by a first Transmission Point, TP, system configuration information to a terminal, to enable the terminal to perform downlink signal detection of a second TP according to the system configuration information; wherein the system configuration information comprises: working frequency point information of the second TP, time synchronization information of the second TP, sub-carrier spacing information of the second TP, and configuration information on a synchronization signal of the second TP, wherein the time synchronization information of the second TP comprises indication information for indicating whether the second TP is synchronous with the first TP, and the configuration information on the synchronization signal of the second TP comprises resource position information of the synchronization signal.
  15. A device for signal detection, comprising: a memory (710); and a processor (720), configured to execute an instruction stored in the memory (710) to enable the device to execute the method according to any one of claims 1-13.

Description

TECHNICAL FIELD The disclosure relates to the field of communications, and more particularly to a method and device for signal detection. BACKGROUND According to existing researches on a 5th-Generation (5G) mobile communication technology, a terminal may be respectively accessed to a 5G network and a Long Term Evolution (LTE) network on different frequency bands. In the LTE network, the terminal may perform cell access according to an existing cell access mechanism of the LTE system. For a terminal that has been accessed to the LTE network, when the network further needs to be accessed to the 5G network, it is necessary to perform the cell access again on a frequency point in the 5G network. In this case, relatively high complexity of signal detection may be required once the terminal still employs the cell access mechanism in the LTE to perform the cell access in the 5G network. US 2011/312316 A1 relates to signaling of physical cell ID and number of transmit antenna ports for another component carrier on a component carrier. WO 2015/042858A1 discloses an LTE-based M2M communication method, which aims to enable the M2M UE to perform a handover from a subcarrier of the base station to a subcarrier of the target base station. EP 2387163 A1 discloses a method for enabling a UE to determine pilot measurement information and determine the signal quality of the neighboring cell according to the pilot measurement information during a cell reselection or handover from a current cell to a neighboring cell. CN102547968A discloses a coordinated multiple-point transmission downlink synchronization method implemented by means of a UE, a base station and a transmission point. SUMMARY The invention is set out in the appended set of claims. The embodiments of the disclosure provide a method and a device for signal detection, which may simplify the complexity of a terminal on a downlink signal detection process. According to a first aspect, the disclosure provides a method for signal detection according to claim 1. Optional features are set out in dependent claims 2 to 13. According to a second aspect, the disclosure provides a method for signal detection according to claim 14. According to a third aspect, the disclosure provides a device for signal detection according claim 15. BRIEF DESCRIPTION OF DRAWINGS In order to describe the technical solutions in the embodiments of the disclosure more clearly, the drawings required to be used in the embodiments of the disclosure will be simply introduced below. It is apparent that the drawings described below are only some embodiments of the disclosure. Other drawings may further be obtained by those of ordinary skill in the art according to these drawings without creative work. FIG. 1 is a schematic flowchart of a method for signal detection according to an embodiment of the disclosure. FIG. 2 is a schematic flowchart of a method for signal detection according to another embodiment of the disclosure. FIG. 3 is a schematic flowchart of a method for signal detection according to another embodiment of the disclosure. FIG. 4 is a schematic flowchart of a method for signal detection according to another embodiment of the disclosure. FIG. 5 is a schematic block diagram of a device for signal detection according to an embodiment of the disclosure. FIG. 6 is a schematic block diagram of a device for signal detection according to another embodiment of the disclosure. FIG. 7 is a schematic block diagram of a device for signal detection according to another embodiment of the disclosure. FIG. 8 is a schematic block diagram of a device for signal detection according to another embodiment of the disclosure. DETAILED DESCRIPTION The technical solutions in the embodiments of the disclosure will be clearly and completely described below in combination with the drawings in the embodiments of the disclosure. It is apparent that the described embodiments are not all embodiments but part of embodiments of the disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the disclosure without creative work shall fall within the scope of protection of the disclosure. It should be understood that the technical solutions of the disclosure may be applied to various communication systems, for example, a Global System of Mobile Communication (GSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE), a 5G New Radio (NR) system and the like. It is also to be understood that a terminal may be called a terminal device or User Equipment (UE), may also be called a mobile terminal, a mobile user device and the like and may communicate with one or more core networks through, for example, a Radio Access Network (RAN). The UE may be a mobile terminal, for example, a mobile phone (or called as a "cellular" phone) and a computer with a mobile terminal, m