DATA TRANSMISSION METHOD, DEVICE, AND SYSTEM

• US 20170238313A1
• Filed: 08/07/2014
• Published: 08/17/2017
• Est. Priority Date: 08/07/2014
• Status: Abandoned Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: ZHANG, Xingwei, LI, Chao, WANG, Jian
• Application Number:
  US15/502,153
• Publication Number:
  US 20170238313A1
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• 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 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

A method includes: determining, by a first device, a frequency hopping parameter and a quantity of retransmission times of to-be-transmitted data, wherein the frequency hopping parameter comprises an initial frequency hopping location, a bandwidth of the to-be-transmitted data, a frequency hopping offset, and a total frequency hopping bandwidth; determining, by the first device, a first start location of the to-be-transmitted data according to the quantity of retransmission times of the to-be-transmitted data and the frequency hopping parameter; and sending, by the first device, the to-be-transmitted data to a second device according to the first start location and the bandwidth of the to-be-transmitted data.

Claims

1-61. -61. (canceled)

62. A data transmission method, comprising:

determining, by a first device, a frequency hopping parameter, wherein the frequency hopping parameter comprises an initial frequency hopping location, a bandwidth of to-be-transmitted data, and a total frequency hopping bandwidth;

determining, by the first device, a first start location of the to-be-transmitted data according to the frequency hopping parameter; and

sending, by the first device, the to-be-transmitted data to a second device according to the first start location and the bandwidth of the to-be-transmitted data.

63. The method according to claim 62, wherein the determining, by the first device, a first start location of the to-be-transmitted data according to the frequency hopping parameter comprises:

if a current retransmission subframe belongs to a first time subset, determining, by the first device, the first start location of the to-be-transmitted data according to the initial frequency hopping location and the total frequency hopping bandwidth;

or if a current retransmission subframe belongs to a second time subset, determining, by the first device, the first start location of the to-be-transmitted data according to the initial frequency hopping location, the bandwidth of the to-be-transmitted data, and the total frequency hopping bandwidth.

64. The method according to claim 62, wherein the frequency hopping parameter further comprises a maximum quantity of retransmission times of the to-be-transmitted data, and before the determining, by the first device, a first start location of the to-be-transmitted data according to the frequency hopping parameter, further comprises:

determining, by the first device, whether the maximum quantity of retransmission times is not greater than 2; and

the determining, by the first device, a first start location of the to-be-transmitted data according to the frequency hopping parameter comprises;

if the maximum quantity of retransmission times is not greater than 2 and a current retransmission subframe belongs to a first time subset, determining, by the first device, the first start location according to the initial frequency hopping location and the total frequency hopping bandwidth;

or if the maximum quantity of retransmission times is not greater than 2 and a current retransmission subframe belongs to a second time subset, determining, by the first device, the first start location according to the initial frequency hopping location, the bandwidth of the to-be-transmitted data, and the total frequency hopping bandwidth.

65. The method according to claim 62, wherein the total frequency hopping bandwidth is a dedicated bandwidth used during data transmission from the first device to the second device, and the determining, by the first device, a first start location of the to-be-transmitted data according to the frequency hopping parameter comprises:

determining, by the first device within a range of the dedicated bandwidth, the first start location of the to-be-transmitted data according to the frequency hopping parameter; and

mapping, by the first device, the first start location to a physical resource of a system bandwidth.

66. The method according to claim 65, wherein after the determining, by a first device, a frequency hopping parameter, further comprises:

sending, by the first device within the range of the dedicated bandwidth, signaling used to indicate the initial frequency hopping location to the second device.

67. A data transmission method, comprising:

determining, by a second device, a frequency hopping parameter and a quantity of retransmission times of to-be-received data, wherein the frequency hopping parameter comprises an initial frequency hopping location, a bandwidth of the to-be-received data, a frequency hopping offset, and a total frequency hopping bandwidth;

determining, by the second device, a first start location of the to-be-received data according to the quantity of retransmission times of the to-be-received data and the frequency hopping parameter; and

receiving, by the second device according to the first start location and the bandwidth of the to-be-received data, the to-be-received data sent by a first device.

68. The method according to claim 67, wherein the frequency hopping parameter further comprises a maximum quantity of retransmission times of the to-be-received data.

69. The method according to claim 67, wherein the determining, by the second device, a first start location of the to-be-received data according to the quantity of retransmission times of the to-be-received data and the frequency hopping parameter comprises:

if a current retransmission subframe belongs to a first time subset, determining, by the second device, the first start location of the to-be-received data from a relatively low frequency location to a relatively high frequency location according to the initial frequency hopping location, the bandwidth of the to-be-received data, the total frequency hopping bandwidth, and a product of the quantity of retransmission times and the frequency hopping offset;

or if a current retransmission subframe belongs to a second time subset, determining, by the second device, the first start location of the to-be-received data from a relatively high frequency location to a relatively low frequency location according to the initial frequency hopping location, the bandwidth of the to-be-received data, the total frequency hopping bandwidth, and a product of the quantity of retransmission times and the frequency hopping offset.

70. The method according to claim 69, wherein the first time subset and the second time subset are the same or different.

71. The method according to claim 70, wherein the first time subset and the second time subset comprise any one of the following time subsets:

a time set comprising an even subframe;

a time set comprising an odd subframe;

a time set comprising a subframe corresponding to a subframe index when a sum of the quantity of retransmission times of the to-be-received data and the subframe index is an even number;

a time set comprising a subframe corresponding to a subframe index when a sum of the quantity of retransmission times of the to-be-received data and the subframe index is an odd number;

or

a time set comprising all subframes.

72. A device, comprising:

a processor and a transmitter;

the processor is configured to determine a frequency hopping parameter, wherein the frequency hopping parameter comprises an initial frequency hopping location, a bandwidth of to-be-transmitted data, and a total frequency hopping bandwidth, and determine a first start location of the to-be-transmitted data according to the frequency hopping parameter;

the transmitter is configured to send the to-be-transmitted data to a second device according to the first start location and the bandwidth of the to-be-transmitted data.

73. The device according to claim 72, wherein the processor is further configured to:

if a current retransmission subframe belongs to a first time subset, determine the first start location of the to-be-transmitted data according to the initial frequency hopping location and the total frequency hopping bandwidth;

or if a current retransmission subframe belongs to a second time subset, determine the first start location of the to-be-transmitted data according to the initial frequency hopping location, the bandwidth of the to-be-transmitted data, and the total frequency hopping bandwidth.

74. The device according to claim 72, wherein the processor is further configured to:

determine whether the maximum quantity of retransmission times is not greater than 2; and

if the maximum quantity of retransmission times is not greater than 2 and a current retransmission subframe belongs to a first time subset, determine the first start location according to the initial frequency hopping location and the total frequency hopping bandwidth, or if the maximum quantity of retransmission times is not greater than 2 and a current retransmission subframe belongs to a second time subset, determine the first start location according to the initial frequency hopping location, the bandwidth of the to-be-transmitted data, and the total frequency hopping bandwidth.

75. The device according to claim 72, wherein the total frequency hopping bandwidth is a dedicated bandwidth used during data transmission, and the processor is further configured to determine, within a range of the dedicated bandwidth, the first start location of the to-be-transmitted data according to the frequency hopping parameter, and map the first start location to a physical resource of a system bandwidth.

76. The device according to claim 75, wherein the transmitter is further configured to send, within the range of the dedicated bandwidth, signaling used to indicate the initial frequency hopping location to the second device.

77. A device, comprising:

a processor and a receiver;

the processor is configured to determine a frequency hopping parameter and a quantity of retransmission times of to-be-received data, wherein the frequency hopping parameter comprises an initial frequency hopping location, a bandwidth of the to-be-received data, a frequency hopping offset, and a total frequency hopping bandwidth, and determine a first start location of the to-be-received data according to the quantity of retransmission times of the to-be-received data and the frequency hopping parameter;

the receiver is configured to receive, according to the first start location and the bandwidth of the to-be-received data, the to-be-received data sent by a first device.

78. The device according to claim 77, wherein the frequency hopping parameter further comprises:

a maximum quantity of retransmission times of the to-be-received data.

79. The device according to claim 77, wherein the processor is further configured to:

if a current retransmission subframe belongs to a first time subset, determine the first start location of the to-be-received data from a relatively low frequency location to a relatively high frequency location according to the initial frequency hopping location, the bandwidth of the to-be-received data, the total frequency hopping bandwidth, and a product of the quantity of retransmission times and the frequency hopping offset;

or if a current retransmission subframe belongs to a second time subset, determine the first start location of the to-be-received data from a relatively high frequency location to a relatively low frequency location according to the initial frequency hopping location, the bandwidth of the to-be-received data, the total frequency hopping bandwidth, and a product of the quantity of retransmission times and the frequency hopping offset.

80. The device according to claim 79, wherein the first time subset and the second time subset are the same or different.

81. The device according to claim 80, wherein the first time subset and the second time subset comprise any one of the following time subsets:

a time set comprising an even subframe;

a time set comprising an odd subframe;

a time set comprising a subframe corresponding to a subframe index when a sum of the quantity of retransmission times of the to-be-received data and the subframe index is an even number;

a time set comprising a subframe corresponding to a subframe index when a sum of the quantity of retransmission times of the to-be-received data and the subframe index is an odd number;

or

a time set comprising all subframes.