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Information transmission method and device

A technology of information transmission and information indication, applied in the field of communication, can solve the problem that the base station cannot reschedule the PUSCH, and cannot feed back the PDSCH ACK/NACK.

Active Publication Date: 2017-11-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides an information transmission method and device, which are used to solve the problem that the UE may not be able to feed back the ACK / NACK corresponding to the PDSCH in the serving cell and the base station may not be able to reschedule the PUSCH of the UE in the serving cell because some subframes of the serving cell are silenced. technical problem

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  • Information transmission method and device
  • Information transmission method and device

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Embodiment Construction

[0056] In the LTE FDD system, for downlink data scheduling, when UE receives PDSCH in subframe n, it will feed back the uplink ACK / NACK corresponding to the PDSCH in subframe n+4. In particular, the retransmission scheduling of downlink PDSCH is asynchronous, namely The downlink assignment for retransmission (Downlink_assignment, DL_assignment for short) does not need to be separated from the ACK / NACK feedback by 4 subframes; for uplink data scheduling, UE receives an uplink scheduling grant (Uplink_grant, UL_grant for short) in subframe n, and will The PUSCH scheduled by the UL_grant is sent in frame n+4, and the base station will feed back a Physical HARQ Indicator Channel (PHICH for short) to the UE in subframe n+8, that is, downlink ACK / NACK. In particular, the retransmission scheduling of the uplink PUSCH is synchronous, that is, the retransmitted UL_grant must be separated from the last PUSCH of the same process by 4 subframes.

[0057] The LTE TDD system has 7 different...

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Abstract

The invention provides an information transmission method and device. One of the information transmission methods includes: the terminal acquires subframe configuration information of at least two serving cells, and the terminal configures the uplink subframe and / or downlink subframe indicated by each subframe configuration information according to the HARQ timing relationship corresponding to the at least two serving cells. The subframe transmits information with the network side equipment; there is at least one first serving cell among at least two serving cells, and the HARQ timing relationship corresponding to the first serving cell is the HARQ timing relationship corresponding to TDD configuration n, and the uplink and downlink configuration of TDD configuration n Different from the uplink and downlink configuration of the first serving cell; or, the timing relationship of the first downlink subframe set of the first serving cell is the HARQ timing relationship of FDD, and the second downlink subframe set of the first serving cell The timing relationship of is the HARQ timing relationship of TDD.

Description

technical field [0001] The present invention relates to communication technology, in particular to an information transmission method and device. Background technique [0002] Generally, in a heterogeneous network, the macro cell can provide mobility management and radio link control functions for the user equipment (UE), and the micro cell can provide high-speed data transmission for the terminal without providing access. ability. A macro cell may be called a primary serving cell, and a micro cell may be called a secondary serving cell. The UE accesses from the macro cell and receives radio resource control (Radio Resource Control, RRC for short) information from the macro cell. A micro cell is configured to the UE, and the UE performs carrier aggregation on the macro cell and the micro cell. According to the current carrier aggregation mechanism, the physical uplink control channel (Physical Uplink Control Channel, which is used to carry the corresponding acknowledgment...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04L1/1854H04L1/1887H04L1/1812H04W72/20H04J3/16
Inventor 官磊薛丽霞马莎
Owner HUAWEI TECH CO LTD
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