SYNCHRONIZATION SIGNAL CARRYING METHOD AND USER EQUIPMENT

• US 20160374038A1
• Filed: 07/10/2014
• Published: 12/22/2016
• Est. Priority Date: 07/26/2013
• Status: Active Grant

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: WANG, Jian
• Granted Patent: US 10,548,105 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0014 Three-dimensional division time-code-space division H04B7/0413, H04B7/0697
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

Embodiments of the present invention provide a synchronization signal carrying method and an apparatus. The synchronization signal carrying method in the present invention includes: determining, by first user equipment, a priority parameter of a synchronization signal; determining, by the first user equipment according to the priority parameter, a resource for carrying the synchronization signal, where a configuration of the resource indicates the priority parameter; and sending, by the first user equipment, the synchronization signal to second user equipment by using the resource, so that the second user equipment determines a synchronization signal for the second user equipment. The embodiments of the present invention enable a more flexible synchronization signal determining manner in a D2D communications system.

Claims

1-66. -66. (canceled)

67. A synchronization signal carrying method, comprising:

determining, by first user equipment, a priority parameter of a synchronization signal;

determining, by the first user equipment according to the priority parameter, a resource for carrying the synchronization signal, wherein a configuration of the resource indicates the priority parameter; and

sending, by the first user equipment, the synchronization signal to second user equipment by using the resource, so that the second user equipment determines a synchronization signal for the second user equipment.

68. The method according to claim 67, wherein the determining, by the first user equipment according to the priority parameter, a resource for carrying the synchronization signal specifically comprises:

determining, by the first user equipment, different resources to carry synchronization signals with different priority parameters.

69. The method according to claim 68, wherein the priority parameter comprises at least one of a level and a layer, wherein

the level is used to identify a source of the synchronization signal or used to identify precision of the synchronization signal;

and

the layer is used to identify a forwarding level of the synchronization signal; and

the synchronization signals with different priority parameters are specifically synchronization signals that differ in at least one of the level and the layer.

70. The method according to claim 69, wherein the source comprises:

a global navigation satellite system, a network device, or the first user equipment.

71. The method according to claim 70, wherein the resource comprises:

a time domain resource, a frequency domain resource, and a codeword resource; and

the different resources are specifically resources that differ in at least one of a time domain, a frequency domain, and a codeword.

72. The method according to claim 71, wherein:

that time domain resources carrying the synchronization signals differ in at least one of the following aspects;

serial numbers of data frames carrying the synchronization signals;

serial numbers of timeslots carrying the synchronization signals;

serial numbers of subframes carrying the synchronization signals; and

serial numbers of orthogonal frequency division multiplexing (OFDM) symbols carrying the synchronization signals.

73. The method according to claim 71, wherein that frequency domain resources carrying the synchronization signals differ in at least one of the following aspects:

serial numbers of physical resource blocks (PRBs) carrying the synchronization signals;

serial numbers of subcarriers carrying the synchronization signals; and

serial numbers of subcarriers in a subcarrier group carrying the synchronization signals.

74. The method according to claim 71, wherein the resources that differ in a codeword are specifically resources that differ in a codeword sequence.

75. The method according to claim 74, wherein the codeword sequence is a sequence with a length of 63 bits:

76. User equipment, comprising:

a transceiver and a processor, wherein

the processor is configured to determine a priority parameter of a synchronization signal and determine, according to the priority parameter, a resource for carrying the synchronization signal, wherein a configuration of the resource indicates the priority parameter; and

the transceiver is configured to send the synchronization signal to another user equipment by using the resource, so that the another user equipment determines a synchronization signal for the another user equipment.

77. The user equipment according to claim 76, wherein the processor is specifically configured to determine different resources to carry synchronization signals with different priority parameters.

78. The user equipment according to claim 77, wherein the priority parameter comprises at least one of a level and a layer, wherein

the level is used to identify a source of the synchronization signal or used to identify precision of the synchronization signal;

and

the layer is used to identify a forwarding level of the synchronization signal; and

the synchronization signals with different priority parameters are specifically synchronization signals that differ in at least one of the level and the layer.

79. The user equipment according to claim 78, wherein the source comprises:

a global navigation satellite system, a network device, or the user equipment.

80. The user equipment according to claim 79, wherein the resource comprises:

a time domain resource, a frequency domain resource, and a codeword resource; and

the different resources are specifically resources that differ in at least one of a time domain, a frequency domain, and a codeword.

81. The user equipment according to claim 80, wherein that time domain resources carrying the synchronization signals differ in at least one of the following aspects:

serial numbers of data frames carrying the synchronization signals;

serial numbers of timeslots carrying the synchronization signals;

serial numbers of subframes carrying the synchronization signals; and

serial numbers of orthogonal frequency division multiplexing (OFDM) symbols carrying the synchronization signals.

82. The user equipment according to claim 80, wherein that frequency domain resources carrying the synchronization signals differ in at least one of the following aspects:

serial numbers of physical resource blocks (PRBs) carrying the synchronization signals;

serial numbers of subcarriers carrying the synchronization signals; and

serial numbers of subcarriers in a subcarrier group carrying the synchronization signals.

83. The user equipment according to claim 82, wherein the resources that differ in a codeword are specifically resources that differ in a codeword sequence.

84. A synchronization signal carrying method, comprising:

receiving, by second user equipment, a synchronization signal sent by first user equipment;

determining, by the second user equipment, a priority parameter according to a resource carrying the synchronization signal and a correspondence between the resource and the priority parameter of the synchronization signal; and

determining, by the second user equipment, a synchronization signal for the second user equipment according to the priority parameter.

85. The method according to claim 84, wherein synchronization signals with different priority parameters are carried by using different resources.

86. The method according to claim 85, wherein the priority parameter comprises at least one of a level and a layer, wherein

the level is used to identify a source of the synchronization signal or used to identify precision of the synchronization signal;

and

the layer is used to identify a forwarding level of the synchronization signal; and

the synchronization signals with different priority parameters are specifically synchronization signals that differ in at least one of the level and the layer.