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Transmission method for physical downlink shared channel

A technology of physical shared channel and transmission method, applied in the field of wireless communication systems, can solve the problems of inability to meet the throughput requirements of end users, affecting the peak rate of end users, and the inability of PDSCH to be scheduled, so as to achieve high throughput and improve peak rate. , the effect of improving flexibility

Inactive Publication Date: 2013-09-18
BEIJING SAMSUNG TELECOM R&D CENT +1
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Problems solved by technology

[0010] It can be seen that using the existing PDSCH cross-carrier scheduling method to realize PDSCH transmission may lead to the problem that the PDSCH of some subframes in the adjusted cell cannot be scheduled, thereby affecting the peak rate of the terminal user, and thus unable to meet the requirements of the terminal user. Higher Throughput Requirements

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  • Transmission method for physical downlink shared channel
  • Transmission method for physical downlink shared channel
  • Transmission method for physical downlink shared channel

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] For a TDD system configured with carrier aggregation, the present invention assumes that the TDD uplink and downlink configurations of multiple Cells of the base station may be different. Similar to LTE-A, the UE accessing the base station can be configured to work in one Cell or multiple Cells.

[0029] The core idea of ​​the present invention is: when the base station sends the cross-carrier scheduling information to the UE by using the PDCCH of the master cell, at the same time, it uses the cross-carrier scheduling information to indicate the PDSCH of the scheduled cell for this scheduling, and the UE can follow the instruction. Determine on which subframes the PDSCH data is processed. In this way, due to the flexibility of the...

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Abstract

The invention provides a transmission method for a physical downlink shared channel (PDSCH). The method comprises the following steps that user equipment (UE) receives cross-carrier scheduling information on a physical downlink control channel (PDCCH) of a scheduling cell, wherein the cross-carrier scheduling information carries scheduling information for indicating of the PDSCH of one or more sub-frames of a scheduled cell in cross-carrier scheduling; the UE processes data on the PDSCH corresponding to the indication according to the received cross-carrier scheduling information; and the UE transmits a hybrid automatic repeat request-acknowledgement (HARQ-ACK) information to a base station according to a processing result. According to the method, the peak rate of the UE can be increased, and the requirement of the UE on higher throughput can further be met.

Description

technical field [0001] The invention relates to wireless communication system technology, in particular to a transmission method of a physical downlink shared channel (PDSCH). Background technique [0002] The Long Term Evolution (LTE) system supports two duplex modes of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). figure 1 It is the frame structure of the TDD system. The length of each radio frame is 10ms, which is equally divided into two half-frames with a length of 5ms. Each half-frame contains 8 time slots with a length of 0.5ms and 3 special domains, namely downlink pilot time slot (DwPTS), guard interval (GP) and uplink pilot time slot (UpPTS), these 3 special domains The sum of the lengths is 1ms. Each subframe consists of two consecutive time slots, that is, the kth subframe includes time slot 2k and time slot 2k+1. The TDD system supports seven different uplink and downlink configurations, as shown in Table 1. In Table 1, D represents a down...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18H04L1/00
CPCH04W72/1273H04L1/1887H04L1/1861H04L1/1864H04W72/04
Inventor 付景兴孙程君李迎阳
Owner BEIJING SAMSUNG TELECOM R&D CENT
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