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Data transmission method, system and equipment

A data transmission method and data transmission technology, applied in the field of data transmission methods, systems and equipment, can solve the problems of reducing resource utilization, system efficiency, TDD system resource utilization, etc.

Active Publication Date: 2013-04-24
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Two methods for avoiding cross-slot interference are given above. The first method requires two TDD systems to perform time synchronization and synchronization of uplink and downlink configurations. If the business requirements of the two TDD systems are different, at least one TDD system must The resource utilization rate decreases; the second method can ensure that the two TDD systems independently configure the uplink and downlink ratios according to business requirements, but reserving a large number of guard frequency bands reduces resource utilization and system efficiency

Method used

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  • Data transmission method, system and equipment
  • Data transmission method, system and equipment
  • Data transmission method, system and equipment

Examples

Experimental program
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Embodiment 1

[0077] Such as Figure 5 As shown, resource 1 is aggregated to the downlink part of carrier 1 by carrier aggregation technology to form an extension carrier (Extension Carrier) or carrier segment (Carrier Segment). In these two aggregation methods, no synchronization signal is sent on resource 1 , broadcast, public pilot and other cell characteristic signals cannot provide UE camping, and even only PDSCH can be sent without sending control channels. At this time, the PDSCH transmission in resource 1 is determined by the downlink scheduling signaling (DL grant) scheduling. The difference is that resource 1 exists as an independent downlink carrier in the former, but only exists as some physical resources in the latter.

[0078] Correspondingly, the resource 2 is aggregated into the uplink part of the carrier 2 by using the carrier aggregation technology to form an extended carrier or a carrier segment. Only the PUSCH may be sent in the resource 2 part, and the uplink control ...

Embodiment 2

[0080] Such as Image 6 As shown, resource 1 is aggregated to the downlink part of carrier 2 for bundled use to form extended carriers or carrier segments, and cell characteristic signals such as synchronization signals, broadcasts, and common pilots are not sent in resource 1, and UE camping cannot be provided. It is even possible to send only the PDSCH without sending the control channel. At this time, the PDSCH transmission in resource 1 is scheduled by the downlink scheduling signaling (DL grant) sent in carrier 2;

[0081] Aggregate resources 2 to the uplink part of carrier 1 and bundle them to form extended carriers or carrier segments.

[0082] Only the PUSCH can be sent in the resource 2 part, and the uplink control channel is not sent. At this time, the PUSCH transmission in the resource 2 is scheduled by the uplink scheduling signaling (UL grant) sent in the carrier 1.

[0083] The difference between this embodiment and Embodiment 1 is: from the perspective of carri...

Embodiment 3

[0085] Such as Figure 7 As shown, the guard frequency band is divided from the frequency domain, so that the downlink resource is divided into resource 1 and resource 1', and the uplink resource is divided into resource 2 and resource 2'.

[0086] Then resource 1 is aggregated to the downlink part of carrier 1, and resource 2' is aggregated to the uplink part of carrier 2 to form extended carriers or carrier segments; cell characteristic signals such as synchronization signals, broadcasts, and common pilots are not sent in resource 1, It is not possible to provide UE camping, and even only PDSCH can be sent without sending control channels. At this time, the PDSCH transmission in resource 1 is scheduled by the downlink scheduling signaling (DL grant) sent in carrier 1; in resource 2', only Send PUSCH, do not send the uplink control channel, at this time, the PUSCH transmission in resource 2' is scheduled by the uplink scheduling signaling (UL grant) sent in carrier 2;

[008...

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Abstract

The present invention relates to the technical field of wireless communications. Disclosed are a method, a system, and a device for data transmission, for use in increasing the utilization rate of system resources while preventing interference between the cross time slots of two time-division duplex (TDD) systems. In the present invention, a first TDD system and / or a second TDD system use a first physical resource within a protected bandwidth of the first TDD system and of the second TDD system for a downlink data transmission; the first TDD system and / or the second TDD system also use a second physical resource within the protected bandwidth for an uplink data transmission. The present invention makes full use of the physical resource within the protected bandwidth, thereby increasing the utilization rate of system resources.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a data transmission method, system and equipment. Background technique [0002] According to the existing spectrum planning of various countries, the spectrum can be divided into two types: paired spectrum and unpaired spectrum. Paired spectrum is generally used in frequency division duplex (FDD) system and needs to be used in pairs for uplink and downlink; rather than paired spectrum Generally used in Time Division Duplex (TDD) systems, a TDD system can be operated on a single frequency spectrum. A typical scenario in spectrum planning is as follows figure 1 As shown, there is a continuous TDD spectrum between the FDD uplink and downlink paired spectrum. [0003] In actual spectrum planning, a section of TDD spectrum is divided into multiple TDD carriers, and the multiple TDD carriers are owned by different operators. Such as figure 2 As shown, a continuous 40M...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/14
CPCH04L5/0039H04L5/1469H04L5/0053
Inventor 潘学明丁昱
Owner DATANG MOBILE COMM EQUIP CO LTD
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