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Method, device and system for determining uplink carrier resource

A carrier and resource technology, applied in the field of determining uplink carrier resources, can solve problems such as no relevant regulations

Inactive Publication Date: 2010-11-10
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3. The handover process of the UE between different base stations requires random access;
[0015] After the carrier aggregation technology is introduced, since the uplink supports multiple component carriers at the same time, it is necessary to determine figure 1 In the non-contention random access process shown, on which uplink component carrier the UE sends the dedicated Preamble to the base station, there is no relevant regulation in the current technical standard

Method used

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  • Method, device and system for determining uplink carrier resource
  • Method, device and system for determining uplink carrier resource
  • Method, device and system for determining uplink carrier resource

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0073] The non-contention random access process of embodiment 2 is as follows image 3 shown, including the following steps:

[0074] Step 301: the base station allocates a dedicated Preamble for non-contention random access to the UE, and sends the dedicated Preamble on a downlink component carrier;

[0075] Step 302: The UE sends the dedicated Preamble to the base station on a cell-specific primary carrier or a user equipment-specific (UE-specific) primary carrier;

[0076] Step 303: the base station receives the dedicated Preamble on the primary carrier dedicated to the cell or the primary carrier dedicated to the user equipment, and sends a random access response to the UE.

[0077] The method in this embodiment uses a primary carrier dedicated to a cell or a primary carrier dedicated to a user equipment to send a dedicated Preamble, which is actually equivalent to an agreement between the base station and the user equipment to use a specific uplink carrier. In practical...

Embodiment 3

[0078] Embodiment 3 is a non-contention random access process caused by handover of user equipment between base stations, the flow chart of which is as follows Figure 4 shown, including the following steps:

[0079] Step 401: During the handover process of the user equipment from the source base station to the target base station, the source base station sends a handover request to the target base station.

[0080] Step 402: The target base station specifies an uplink component carrier for the UE on the uplink component carriers that the UE can support according to the UE's capabilities; the way of specifying the uplink component carrier can be random designation, or designation according to a certain strategy. For example, the i-th uplink component carrier is specified for the UE being processed this time, and the i+1-th uplink component carrier is specified for the UE being processed next time.

[0081] Step 403: The target base station sends a handover request acknowledgm...

Embodiment 4

[0084] Embodiment 4 is the non-contention random access processing flow caused by the arrival of downlink data, such as Figure 5 shown, including the following steps:

[0085] Step 501: The base station specifies the uplink component carrier that the UE can use to send the dedicated Preamble under the principle of load balancing according to the UE capability and the random access load information on each uplink component carrier; the load balancing principle can be implemented in different ways, For example, the component carrier with the smallest random access load or the carrier with the smallest current service transmission load may be selected. The present invention does not limit the specific implementation manner of load balancing.

[0086] Step 502: the base station sends PDCCH signaling to the UE, and the PDCCH signaling carries a dedicated preamble for random access. In order to indicate the uplink component carrier used by the dedicated preamble sent by the UE upl...

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Abstract

The invention discloses a method for determining an uplink carrier resource. The method comprises the following steps that: a base station allocates a special random access leader sequence for noncompetitive random access to user equipment, determines a downlink member carrier for transmitting the special random access leader sequence to the user equipment, and transmits the special random access leader sequence to the user equipment through the determined downlink member carrier; and the base station obtains an uplink member carrier used by the user equipment to transmit the special random access leader sequence according to the determined downlink member carrier and a binding relation between the preconfigured downlink member carriers / uplink member carriers, and receives the special random access leader sequence on the uplink member carrier. The invention also discloses another method, another device and another system for determining the uplink carrier resource. The method, the device and the system can be used for a multi-carrier aggregation system to fill the gap of the prior art.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method, device and system for determining uplink carrier resources. Background technique [0002] In the 3GPP Long Term Evolution LTE-Advanced (LTE is the abbreviation of Long Term Evolution, it is the evolution system of the third generation mobile communication system, the LTE-Advanced system is an upgrade of the LTE system, abbreviated as LTE-A) system, the peak rate is higher than that of LTE It has been greatly improved, and the peak downlink rate is required to reach 1Gbps, and the peak uplink rate is up to 500Mbps. At the same time, the LTE-A system requires good compatibility with the LTE system. The LTE-A system introduces a carrier aggregation (Carrier Aggregation, CA) technology based on the need to increase the peak rate, be compatible with the LTE system, and make full use of spectrum resources. [0003] The carrier aggregation technology ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W36/08H04W72/04H04W74/08H04W88/02H04W88/08
Inventor 赵亚利鲍炜谌丽
Owner CHINA ACAD OF TELECOMM TECH