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Terminal device, base station device, transmission method, and reception method

A technology for terminal devices and base stations, applied in connection management, digital transmission systems, signaling allocation, etc., can solve problems such as PDCCH scheduling restrictions, CCE allocation PDCCH, etc., to reduce the amount of signaling and eliminate insufficient PUCCH resources.

Active Publication Date: 2016-05-25
SUN PATENT TRUST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when more CCEs are occupied than the CCEs occupied by the PDCCH in order to notify the PUCCH resources, the PDCCHs of other terminals cannot be allocated to the CCEs, and the PDCCH scheduling in the base station is limited.

Method used

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  • Terminal device, base station device, transmission method, and reception method
  • Terminal device, base station device, transmission method, and reception method
  • Terminal device, base station device, transmission method, and reception method

Examples

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Embodiment approach 1

[0128] Figure 11 It is a main configuration diagram of the base station 100 according to the embodiment of the present invention. The base station communicates with terminal 200 using a component frequency band group including two downlink component frequency bands and at least one uplink component frequency band. In the base station 100, the mapping unit 108 maps the downlink allocation control information ( DCI) is mapped to the downlink control channel (PDCCH) of at least one downlink component frequency band in the component frequency band group, and the downlink data is mapped to the downlink data channel (PDSCH) indicated by the above-mentioned downlink allocation control information. Thus, downlink allocation control information is transmitted through a downlink control channel (PDCCH), and downlink data is transmitted through a downlink data channel (PDSCH). In addition, the PUCCH extraction unit 114 receives a response signal to the downlink data through the uplink...

Embodiment approach 2

[0235] Below, citing Figure 15 A PUCCH resource notification method during dynamic scheduling is described in detail when 2CCs are configured for the terminal and a transmission mode (transmission mode 3, 4, or 8) that supports a maximum of 2 TB is configured for at least the PCell. However, this figure shows an example of cross-carrier scheduling from PCell to SCell. That is, the PDCCH in the PCell indicates the PDSCH in the SCell.

[0236] The first CCE index (n_CCE) associated with the CCE occupied by the PDCCH indicating the PDSCH in the PCell is associated one-to-one, and the PUCCH resource 1 in the uplink component frequency band is allocated (implicit signaling). Then, the PUCCH resource 2 in the uplink component band is allocated (implicit signaling) in one-to-one association with the next index (n_CCE+1) of the top CCE index of the CCE indicating the PDCCH occupancy of the PDSCH in the PCell.

[0237] Furthermore, it is associated one-to-one with the head CCE index...

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Abstract

It is disclosed that when ARQ is applied to communication using an uplink component frequency band and a plurality of downlink component frequency bands associated with the uplink component frequency band, and when a terminal sets a transmission mode supporting a maximum of 2 TB for the PCell, half During static scheduling, the amount of signaling from the base station can be reduced, and terminal devices with insufficient PUCCH resources can be eliminated. In this device, the control unit (208) selects four PUCCH resource indexes (n (1)PUCCH) plus 1 (n(1)PUCCH+1), select one value.

Description

technical field [0001] The present invention relates to a terminal device, a base station device, a transmission method, and a reception method. Background technique [0002] In 3GPP LTE, OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) is adopted as a downlink communication method. In a wireless communication system to which 3GPP LTE is applied, a base station transmits a synchronization signal (Synchronization Channel: SCH) and a broadcast signal (Broadcast Channel: BCH) using predetermined communication resources. And, the terminal first ensures synchronization with the base station by acquiring the SCH. Then, the terminal acquires base station-specific parameters (for example, bandwidth, etc.) by reading BCH information (see Non-Patent Documents 1, 2, and 3). [0003] In addition, after acquiring the parameters dedicated to the base station, the terminal sends a connection request to the base station, thereby establis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W28/04H04W28/06
CPCH04L1/1692H04L1/1854H04L1/1861H04L5/0055H04W52/54H04W72/02H04W72/0453H04W72/12H04W76/28H04W28/06H04W28/04H04W88/02H04W88/08H04W72/23H04W72/21H04L1/00
Inventor 大泉透西尾昭彦堀内绫子
Owner SUN PATENT TRUST
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