Search

EP-4027693-B1 - COMMUNICATION METHOD, DEVICE, AND SYSTEM

EP4027693B1EP 4027693 B1EP4027693 B1EP 4027693B1EP-4027693-B1

Inventors

  • LUO, Zhihu
  • LI, JUN
  • JIN, ZHE

Dates

Publication Date
20260506
Application Date
20191108

Claims (11)

  1. A communication method, wherein the method comprises: receiving (S402), by a terminal device (30), resource configuration information from a network device (20); and determining (S403), by the terminal device (30) based on the resource configuration information, a symbol that corresponds to a first resource and that is in a first time unit, wherein the symbol corresponding to the first resource does not comprise a symbol on which a reference signal is located and that is in the first time unit, and the first resource is not used for data transmission corresponding to the terminal device (30), wherein the reference signal comprises one or more of the following: a narrowband reference signal, NRS, a narrowband positioning reference signal, NPRS, a demodulation reference signal, DMRS, or a cell-specific reference signal, CRS; wherein the first time unit comprises subframes each comprising a first number of symbols; wherein the resource configuration information comprises indication information corresponding to n symbols in the first time unit other than the symbol on which the reference signal is located, wherein each indication information corresponding to a first symbol among the n symbols is used to indicate whether the first symbol among the n symbols corresponds to the first resource, and n is a positive integer inferior to the first number of symbols by at least a number of symbols in the subframe on which the reference signal is located; and the determining (S403), by the terminal device (30) based on the resource configuration information, a symbol that corresponds to a first resource and that is in a first time unit comprises: if the indication information corresponding to the first symbol indicates that the first symbol is the symbol corresponding to the first resource, determining, by the terminal device (30), that the symbol corresponding to the first resource comprises the first symbol.
  2. A communication method, comprising: receiving (S402), by a terminal device (30), resource configuration information from a network device (20); and determining (S403), by the terminal device (30) based on the resource configuration information, a symbol that corresponds to a first resource and that is in a first time unit, wherein the symbol corresponding to the first resource does not comprise a symbol on which a reference signal is located and that is in the first time unit, and the first resource is not used for data transmission corresponding to the terminal device (30), wherein the reference signal comprises one or more of the following: a narrowband reference signal, NRS, a narrowband positioning reference signal, NPRS, a demodulation reference signal, DMRS, or a cell-specific reference signal, CRS, wherein the first time unit comprises m symbols, the resource configuration information comprises indication information corresponding to the m symbols, wherein each indication information corresponding to a second symbol among the m symbols is used to indicate whether the second symbol among the m symbols corresponds to the first resource, and m is a positive integer; and the determining, by the terminal device (30) based on the resource configuration information, a symbol that corresponds to a first resource and that is in a first time unit comprises: if the second symbol is the symbol on which the reference signal is located, and the indication information corresponding to the second symbol indicates that the second symbol corresponds to the first resource, determining, by the terminal device (30), that the symbol corresponding to the first resource does not comprise the second symbol; or if the second symbol is not the symbol on which the reference signal is located, and the indication information corresponding to the second symbol indicates that the second symbol corresponds to the first resource, determining, by the terminal device (30), that the symbol corresponding to the first resource comprises the second symbol.
  3. A communication method, comprising: receiving (S402), by a terminal device (30), resource configuration information from a network device (20); and determining (S403), by the terminal device (30) based on the resource configuration information, a symbol that corresponds to a first resource and that is in a first time unit, wherein the symbol corresponding to the first resource does not comprise a symbol on which a reference signal is located and that is in the first time unit, and the first resource is not used for data transmission corresponding to the terminal device (30), wherein the reference signal comprises one or more of the following: a narrowband reference signal, NRS, a narrowband positioning reference signal, NPRS, a demodulation reference signal, DMRS, or a cell-specific reference signal, CRS; wherein the first time unit comprises m symbols, the resource configuration information comprises indication information corresponding to the m symbols, wherein each indication information corresponding to a third symbol among the m symbols is used to indicate whether the third symbol among the m symbols corresponds to the first resource, the third symbol is one of the m symbols, and m is a positive integer; and the determining, by the terminal device (30) based on the resource configuration information, a symbol that corresponds to a first resource and that is in a first time unit comprises: if the third symbol is the symbol on which the reference signal is located, and the indication information corresponding to the third symbol indicates that the third symbol corresponds to the first resource, adjusting, by the terminal device (30), the symbol on which the reference signal is located from the third symbol to a fourth symbol, and determining that the symbol corresponding to the first resource comprises the third symbol; or if the third symbol is not the symbol on which the reference signal is located, and the indication information corresponding to the third symbol indicates that the third symbol corresponds to the first resource, determining, by the terminal device (30), that the symbol corresponding to the first resource comprises the third symbol.
  4. The method according to claim 3, wherein the m symbols comprise a fifth symbol, the fifth symbol is the symbol on which the reference signal is located, and indication information corresponding to the fifth symbol indicates that the fifth symbol is not the symbol corresponding to the first resource; and the method further comprises: adjusting, by the terminal device (30), the symbol on which the reference signal is located from the fifth symbol to a sixth symbol, wherein a spacing between the fifth symbol and the sixth symbol is equal to a spacing between the third symbol and the fourth symbol.
  5. The method according to claim 3 or 4, wherein the method further comprises: receiving, by the terminal device (30), first indication information from the network device (20), wherein the first indication information comprises an offset value, and the offset value represents the spacing between the third symbol and the fourth symbol; or the first indication information comprises location information of the fourth symbol.
  6. The method according to any one of claims 1 to 5, wherein the method further comprises: discarding, by the terminal device (30), data carried by the symbol corresponding to the first resource.
  7. The method according to any one of claims 1 to 6, wherein the resource configuration information is determined based on a first subcarrier spacing, the first subcarrier spacing is a largest subcarrier spacing in P subcarrier spacings supported by uplink transmission in a first communication system accessed by the terminal device, and P is a positive integer greater than or equal to 2.
  8. A communication method, wherein the method comprises: determining (S401), by a network device (20), resource configuration information, wherein the resource configuration information is used by a terminal device (30) to determine a symbol that corresponds to a first resource and that is in a first time unit, wherein the symbol corresponding to the first resource does not comprise a symbol on which a reference signal is located and that is in the first time unit, and the first resource is not used for data transmission corresponding to the terminal device, wherein the reference signal comprises one or more of the following: a narrowband reference signal, NRS, a narrowband positioning reference signal, NPRS, a demodulation reference signal, DMRS, or a cell-specific reference signal, CRS; and sending (S402), by the network device (20), the resource configuration information to the terminal device (30); wherein the first time unit comprises subframes each comprising a first number of symbols, wherein the resource configuration information comprises indication information corresponding to n symbols in the first time unit other than the symbol on which the reference signal is located, wherein each indication information corresponding to a first symbol among the n symbols is used to indicate whether the first symbol among the n symbols corresponds to the first resource, and n is a positive integer inferior to the first number of symbols by at least a number of symbols in the subframe on which the reference signal is located, or wherein the first time unit comprises m symbols, the resource configuration information comprises indication information corresponding to the m symbols, wherein each indication information corresponding to a second symbol among the m symbols is used to indicate whether the second symbol among the m symbols corresponds to the first resource, and m is a positive integer, or wherein the first time unit comprises m symbols, the resource configuration information comprises indication information corresponding to the m symbols, wherein each indication information corresponding to a third symbol among the m symbols is used to indicate whether the third symbol among the m symbols corresponds to the first resource, the third symbol is one of the m symbols, and m is a positive integer.
  9. The method according to claim 8, wherein the method further comprises: discarding, by the network device (20), data carried by the symbol corresponding to the first resource.
  10. A terminal device (100), configured to perform the method of any one of claims 1 to 7.
  11. A network device (110), configured to perform the method of any one of claims 8 to 9.

Description

Priority is claimed to PCT Patent Application No. PCT/CN2019/109248, filed with the China National Intellectual Property Administration on September 29, 2019 and entitled "COMMUNICATION METHOD, DEVICE, AND SYSTEM". TECHNICAL FIELD This disclosure relates to the communication field, and in particular, the invention relates to a communication method, a terminal device, and a network device. BACKGROUND An internet of things (internet of things, IoT) is "an internet through which things are connected to each other". The IoT extends a user end of the internet to any object, so that any object can perform information exchange and communication. Such a communication manner is also referred to as machine type communication (machine type communication, MTC). In Release (release, Rel) 16 of a narrowband internet of things (narrow band internet of things, NB-IoT) system, to enable the NB-IoT system and a new radio (new radio, NR) system to better share a spectrum resource, an issue of coexistence of the NB-IoT system and the NR system is discussed, and finally, it is determined that the NB-IoT system can reserve a resource, where the reserved resource may be used by the NR system for scheduling. However, currently there is no related solution to how to reserve the resource. The following documents relate to the technological background for the context of the invention: ERICSSON, "NR and LTE-M Coexistence", vol. RAN WG1, no. Chengdu, China; 20181008 - 20181012, (20180929), 3GPP DRAFT; R1-1810188 NR AND LTE-M COEXISTENCE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), relates to a working contribution document of the 3GPP related to NR and LTE-M coexistence. ZTE, "Coexistence of NB-IoT with NR", vol. RAN WGl, no. Reno, USA; 20190513 - 20190517, (20190513), 3GPP DRAFT; R1-1906508 NB-IOT COEXISTENCE WITH NR, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), relates to a working document of the 3GPP discussing the coexistence of NB-IoT with NR, in particular the discussion aims at avoiding overlaps of NR SSN with NB-IoT anchor carrier.Samsung: "Indication of reserved resources", 3GPP DRAFT; R1-170939 (Indication of reserved resources), vol. RAN WG1, 5 May 2017), relates to a working document of the 3GPP on indication of reservation, in particular to for explicit signaling to NR UEs indicating reserved resources. SUMMARY The object of the present invention is to provide a communication method, terminal device, and network device. When a resource is reserved, a conflict between a reference signal of a terminal device and data of another terminal device can be avoided, and impact on channel estimation performance of the terminal device can be avoided. The invention is defined in the appended claims. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of this application;FIG. 2 is a schematic diagram of a structure of a terminal device and a structure of a network device according to an embodiment of this application;FIG. 3 is a schematic diagram of another structure of a terminal device according to an embodiment of this application;FIG. 4 is a schematic flowchart of a communication method according to an embodiment of this application;FIG. 5a is a schematic diagram 1 of resource configuration information according to an embodiment of this application;FIG. 5b is a schematic diagram 2 of resource configuration information according to an embodiment of this application;FIG. 6a is a schematic diagram 3 of resource configuration information according to an embodiment of this application;FIG. 6b is a schematic diagram 4 of resource configuration information according to an embodiment of this application;FIG. 7a is a schematic diagram 5 of resource configuration information according to an embodiment of this application;FIG. 7b is a schematic diagram of symbols on which a reference signal is located according to an embodiment of this application;FIG. 8 is a schematic diagram of a usage scenario of resource configuration information according to an embodiment of this application;FIG. 9 is a schematic diagram of a usage scenario of another type of resource configuration information according to an embodiment of this application;FIG. 10 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application;FIG. 11 is a schematic diagram of a structure of another communication apparatus according to an embodiment of this application;FIG. 12 is a schematic diagram of a location of a symbol corresponding to a first resource according to an embodiment of this application; andFIG. 13 is a schematic flowchart of another communication method according to an embodiment of this application. In the following description, features which in the above summary of the invention have been marked as "not claimed" are also hereinafter, when they are described and explained with reference to the drawings, to be understood as "not claimed" or "