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User equipment and base station

A technology for user equipment and base stations, which is applied in the directions of multiple use of transmission paths, effective load distribution, digital transmission systems, etc.

Active Publication Date: 2019-05-21
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In category M1, the transmission and reception bandwidth of the user equipment is limited to 6 RBs (resource blocks), and the data rate is limited to 1 Mbps (for example, refer to Non-Patent Document 1)

Method used

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  • User equipment and base station
  • User equipment and base station
  • User equipment and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] First, refer to Figure 7 , the outline of the processing in Embodiment 1 will be described. In step S201, the base station 20 instructs the user equipment 10 to operate in the wideband mode or to operate in the narrowband mode. In Embodiment 1, it is set to indicate the broadband domain mode. The mode is indicated by, for example, system information (MIB or SIB), radio configuration information of RRC signaling at the time of RRC connection establishment, and the like.

[0057] In step S202, the base station 20 notifies the user equipment 10 of resources through the MPDCCH. This resource notification specifies which resource (RB, NB, etc.) in which wideband domain (for example, a bandwidth of 4 NBs) to use within the system band. In addition, as the length and / or position of the time domain of resources, the length and / or position of subframes and / or slots may also be specified. In addition, as the time position and length of the resource, for example, a subframe w...

Embodiment 1-1

[0062] Embodiment 1-1, which is the first example of a method of specifying frequency positions in the wideband domain in resource notification by MPDCCH, will be described.

[0063] In Embodiment 1-1, four consecutive narrowbands (Narrowband, NB) consisting of six PRBs (Physical Resource Blocks) are set as one narrowband group (Narrowband group, NBG), which is set as the above-mentioned wideband domain. It should be noted that the narrowband (Narrowband) may also be referred to as a narrowband domain. In addition, a narrowband group (Narrowband group) may also be referred to as a narrowband domain group or a narrowband domain group. In addition, the number of PRBs included in the narrowband (Narrowband) may also be other than six.

[0064] An index (number) indicating a frequency position within the system bandwidth is assigned to each NBG. For example, the index of the NBG corresponding to the four NBs of 0 to 3 can be set to 0, and the index of the NBG corresponding to th...

Embodiment 1-2

[0074] Embodiment 1-2, which is another example of a method of specifying a frequency position in a wideband domain in resource notification by MPDCCH, will be described.

[0075] Also in Embodiment 1-2, as in Embodiment 1-1, four consecutive NBs composed of six PRBs (Physical Resource Blocks) are set as one NBG.

[0076] In embodiment 1-2, in Figure 7 In Step S202 shown, the base station 20 notifies the user equipment 10 of the start position of one NBG including resources allocated to the user equipment 10 through the MPDCCH. This starting position corresponds to the smallest index among the four indexes of the four NBs constituting the NBG.

[0077] Figure 10 Shown is the start position (A) of the NBG when the NBG composed of NBs with indexes 2 to 5 is notified to the user apparatus 10 when the system bandwidth is 10 MHz. In this case, 2 is notified as the starting position. The user apparatus 10 having received the start position determines that the NBG consisting of...

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Abstract

User equipment in a radio communication system comprising a base station and the user equipment is provided with: a receiving unit which receives from the base station first specifying information specifying a resource group comprising a plurality of resources having a bandwidth of a predetermined number of resource blocks, and second specifying information specifying an allocated resource withinthe resource group; and a communication unit which implements data communication within the resource group specified by the first specifying information, using the allocated resource specified by thesecond specifying information.

Description

technical field [0001] The present invention relates to a user equipment and a base station in a wireless communication system. Background technique [0002] In 3GPP (3rd generation partnership project, 3rd Generation Partnership Project), in addition to LTE's wireless high-speed and large-capacity expansion, for IoT-oriented technologies such as smart meters, LTE-based extensions are also studied. In particular, in the Release 13 specification, the category M1 is supported as a category of IoT-oriented low-cost terminals (hereinafter referred to as user devices). In category M1, the transmission and reception bandwidth of the user equipment is limited to 6 RBs (resource blocks), and the data rate is limited to 1 Mbps (see, for example, Non-Patent Document 1). [0003] prior art literature [0004] non-patent literature [0005] Non-Patent Document 1: 3GPP TS 36.101 V13.4.0 Contents of the invention [0006] The problem to be solved by the invention [0007] As IoT-or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04W72/04H04L5/0094H04L5/0044H04W88/06H04W72/0453H04W88/08H04W72/23
Inventor 大久保尚人蒋惠玲刘柳牟勤
Owner NTT DOCOMO INC