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Method and device for cross-carrier multi-sub-frame scheduling of TDD (time division duplex)-FDD (frequency division duplex) combined system

A technology of multi-subframe scheduling and joint system, applied in the field of cross-carrier multi-subframe scheduling

Active Publication Date: 2015-02-11
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Method and device for cross-carrier multi-sub-frame scheduling of TDD (time division duplex)-FDD (frequency division duplex) combined system
  • Method and device for cross-carrier multi-sub-frame scheduling of TDD (time division duplex)-FDD (frequency division duplex) combined system
  • Method and device for cross-carrier multi-sub-frame scheduling of TDD (time division duplex)-FDD (frequency division duplex) combined system

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[0015] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0016] As mentioned above, the cross-carrier scheduling feature provides additional cross-system flexibility to further optimize control and data channel performance across multiple carriers. In TDD-FDD carrier aggregation, if FDD subframes are scheduled across carriers by TDD subframes, UL / DL grants for FDD subframes will be located on TDD carriers. This can happen in many cases, for example in case of TDD band being accessed first as prim...

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Abstract

The invention provides a method and a device for cross-carrier multi-sub-frame scheduling of a TDD (time division duplex)-FDD (frequency division duplex) combined system. The method comprises the following operations executed by a base station: for consistent sub frames in FDD carrier waves, consistent sub frame dispatching information is configured so that the corresponding sub frames in the TDD carrier waves dispatch the consistent sub frames according to the same time sequence relationship; for the inconsistent sub frames in the FDD carrier waves, inconsistent sub frame configuration information is configured so that the TDD sub frames dispatching the consistent sub frames before the inconsistent sub frame are used for dispatching the inconsistent sub frames; the specific RNTI (radio network temporary identity) is used for scrambling the PDCCH (physical downlink control channel) carrying the inconsistent sub frame dispatching information and in inconsistent sub frame dispatching information; the scrambled PDCCH is sent.

Description

technical field [0001] The present invention generally relates to the field of wireless communication, and more specifically, relates to a method and device for cross-carrier multi-subframe scheduling in a TDD-FDD joint system. Background technique [0002] Recently, the 3rd Generation Partnership Project (3GPP) began to study the joint operation of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in Long Term Evolution (LTE), hoping to take advantage of the advantages of TDD and FDD carrier aggregation. features to enhance LTE TDD-FDD joint operation. Carrier aggregation between FDD and TDD carriers can provide system flexibility and performance benefits to operators who own both FDD and TDD frequency bands. However, due to the difference between LTE FDD and TDD standards, especially the difference in control signaling and subframe timing, it is necessary to design new uplink (UL) / downlink (DL) control channels to achieve this kind of TDD-FDD carrier aggregat...

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Application Information

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IPC IPC(8): H04W72/12H04L5/00
Inventor 孙芳蕾杨涛
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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