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Method and device for configuring type of cyclic prefix

A technology of cyclic prefix and configuration method, which is applied in the communication field, can solve the problem of low resource utilization and achieve the effect of improving the utilization of uplink resources

Inactive Publication Date: 2016-04-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem of low utilization of uplink resources in the related art, the present invention provides a configuration method and device of cyclic prefix type to at least solve the above problems

Method used

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  • Method and device for configuring type of cyclic prefix
  • Method and device for configuring type of cyclic prefix
  • Method and device for configuring type of cyclic prefix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] This preferred embodiment describes in detail the method provided by the present invention for configuring the cyclic prefix for uplink transmission.

[0128] The base station configures the cyclic prefix used for the uplink transmission of the cell as a regular cyclic prefix through the existing high-layer signaling "UL-CyclicPrefixLength". Regular cyclic prefixing continues until the next time an update is received indicating a change. Assuming that the indication is received from subframe #5 of radio frame #12, the update indication is received in subframe #5 of radio frame #62 and changed to an extended cyclic prefix, during which all uplink transmissions within N=500ms use the regular cyclic prefix.

[0129] From radio frame #32, type 2 terminal D2D users appear in the cell and the two D2D users are configured to use extended cyclic prefixes, which need to last for 2 radio frames, and from radio frame #30, type 1 terminal high version users in the cell are at the ...

Embodiment 2

[0134] This preferred embodiment describes in detail the method provided by the present invention for configuring the cyclic prefix for uplink transmission.

[0135] The base station configures the cyclic prefix used for uplink transmission of the cell as an extended cyclic prefix through the existing high-layer signaling "UL-CyclicPrefixLength". The extended cyclic prefix is ​​performed until the next time an update is received indicating a change. Assuming that the indication is received from subframe #0 of radio frame #10, the update indication is received in subframe #0 of radio frame #70 and changed to a regular cyclic prefix, during which all uplink transmissions within N=600ms use extended cyclic prefix.

[0136] The base station sends high-level signaling to the D2D users who need to use the short cyclic prefix in the subframe #0 of the radio frame #10, indicating that the short cyclic prefix can be used in the {#6, 7, 8, 9, 10} Execution. The length of the long cyc...

Embodiment 3

[0141] This preferred embodiment describes in detail the method provided by the present invention for configuring the cyclic prefix for uplink transmission.

[0142] The base station configures the cyclic prefix used for the uplink transmission of the cell as a regular cyclic prefix through the existing high-layer signaling "UL-CyclicPrefixLength". Regular cyclic prefixing continues until the next time an update is received indicating a change. Assuming that the indication is received from subframe #5 of radio frame #12, the update indication is received in subframe #5 of radio frame #62 and changed to an extended cyclic prefix, during which all uplink transmissions within N=500ms use the regular cyclic prefix.

[0143] From radio frame #32, a type-terminal D2D user appears in the cell and two D2D users need to transmit D2D services. The configuration uses an extended cyclic prefix, which needs to last for 2 radio frames, and from radio frame #30, a type-terminal D2D user in ...

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Abstract

The invention discloses a method and a device for configuring types of cyclic prefixes. The method comprises the step of sending configuration information used for indicating types of uplink cyclic prefixes to different terminals by a base station, wherein the types of uplink cyclic prefixes are at least divided into a first-type uplink cyclic prefix and a second-type uplink cyclic prefix according to the length of a time domain; the different terminals comprise at least two types of terminals, and / or terminals of at least two types of services; and a sub-frame / wireless frame set of the first-type and / or the second-type uplink cyclic prefix configured for one type of terminal or service is a sub-set of a sub-frame / wireless frame set of the same type of uplink cyclic prefix configured for another type of terminal or service. By adopting the method and the device provided by the invention, the problem in the related art that the utilization rate of uplink resources is relatively low is solved, and the utilization rate of the uplink resources is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a configuration method and device of Cyclic Prefix (abbreviated as CP) type. Background technique [0002] In recent years, due to the high spectrum efficiency of Long-Term Evolution (abbreviated as LTE) / Long-Term Evolution Advanced (abbreviated as LTE-Advance or LTE-A), more and more mobile operators choose LTE / LTE-A is the evolution direction of the broadband wireless communication system. [0003] figure 1 It is based on the schematic diagram of LTE / LTE-A system frame structure and cyclic prefix in the related art, such as figure 1 As shown, the LTE / LTE-A system uses 10ms radio frames in the time domain, and each radio frame is divided into ten 1ms subframes of the same length. Each subframe consists of 2 time slots, and the length of each time slot is 0.5ms. Each time slot is composed of a certain number of Orthogonal Frequency Division Multiplexing (Orthogonal Frequen...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/26
Inventor 夏树强石靖戴博吴栓栓
Owner ZTE CORP