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Carrier management method in multi-carrier system and evolved node B (eNB)

An evolved base station and carrier management technology, applied in transmission systems, digital transmission systems, communication between multiple stations, etc., can solve problems affecting public resource allocation, wasteful occupation of public resources, and system capacity impact.

Inactive Publication Date: 2011-07-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution increases the flexibility of carrier management, the disadvantage is that some of the carrier configuration parameters are public configuration parameters that rarely change, and some are configuration parameters related to the occupation of control channel resources and uplink reference signal resources ( For example, channel quality indicator configuration parameters, scheduling request configuration parameters, and uplink reference signal configuration parameters), the resources configured by these parameters are common resources shared by UEs. When the eNB allocates these common resources to a certain UE, it will inevitably affect other UE common resource allocation
If the eNB sends all the configuration information of the target carrier to the UE, but does not activate the carrier for a long time, it will cause the UE to wastefully occupy the public resources of the target carrier and affect the system capacity.

Method used

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  • Carrier management method in multi-carrier system and evolved node B (eNB)
  • Carrier management method in multi-carrier system and evolved node B (eNB)
  • Carrier management method in multi-carrier system and evolved node B (eNB)

Examples

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Effect test

Embodiment 1

[0212] Assume that the UE and eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE. The downlink carriers are DL CC1 (Downlink Component Carrier, downlink component carrier) and DLCC2, and the corresponding uplink carriers are UL CC1 (Uplink Component Carrier, uplink component carrier) and UL CC2.

[0213] It is assumed that the eNB needs to add a pair of uplink and downlink carriers for the UE due to the increase of traffic demanded by the UE, which are DL CC3 and UL CC3. DL CC3 is not synchronized with DL CC1 and DL CC2. UE needs to initiate random access on UL CC3 to obtain uplink synchronization. This information is included in the dedicated parameter configuration of DL CC3 and UL CC3.

[0214] The carrier management in this embodiment adopts the carrier management method 1 described in the summary of the invention, and the process of adding a carrier for the UE in this embodiment is as follows figure 2 As s...

Embodiment 2

[0221] It is assumed that the UE and the eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE. The downlink carriers are DL CC1 and DL CC2, and the corresponding uplink carriers are UL CC1 and UL CC2 respectively.

[0222] Assuming that the eNB needs to add a pair of uplink and downlink carriers for the UE due to the heavy load of the existing carrier, let them be DL CC3 and UL CC3. DL CC3 and DL CC1 are synchronized, and this information is included in the dedicated parameter configuration of DL CC3 and UL CC3.

[0223] The carrier management in this embodiment adopts the carrier management method 2 described in the summary of the invention, and the process of adding a carrier for the UE in this embodiment is as follows image 3 As shown, the steps are detailed as follows:

[0224] Step 301: The eNB judges whether the UE will initiate random access on UL CC3, because DL CC3 and DL CC1 are synchronized, so the UE ...

Embodiment 3

[0230] It is assumed that the UE and the eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE. The downlink carriers are DL CC1 and DL CC2, and the corresponding uplink carriers are UL CC1 and UL CC2 respectively.

[0231] This embodiment gives an example of the eNB adjusting the activation and deactivation of the carrier in real time according to the change of the UE traffic. In this embodiment, the parameters are not released, so that when the eNB needs to use the target carrier again, the carrier can be reactivated quickly, which greatly reduces the scheduling delay and signaling overhead. This is a part of the carrier management method described in the present invention. An example of flexible use. There are similar applications in other embodiments.

[0232] Assume that the eNB needs to reduce a pair of uplink and downlink carriers for the UE due to the decrease in the traffic demand of the UE, which are DL C...

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Abstract

The invention discloses a carrier management method in a multi-carrier system and an evolved node B (eNB), which can improve the flexibility of carrier management. The method comprises the processes of carrier parameter configuration, carrier parameter activation, carrier parameter de-activation and carrier parameter release. The carrier parameter configuration comprises the steps of: dividing all parameters of a carrier into common parameters and special parameters; and configuring the parameters in batches by the eNB according to divided types when performing the carrier parameter configuration on user equipment (UE). The carrier parameter activation comprises a step of activating the parameters configured to the UE in batches by the eNB, wherein the activation comprises the activation of the parameters of a channel quality part and the activation of the parameters of a scheduling part. The carrier parameter de-activation comprises a step of indicating the UE to de-activate the parameters in batches by the eNB in the process of indicating the UE to de-activate the carrier, wherein the de-activation comprises the de-activation of the parameters of the scheduling part and the de-activation of the parameters of the channel quality part. The carrier parameter release comprises a step of indicating the UE to release the configured parameters of the carrier in batches by the eNB, wherein the release comprises the release of the common parameters and the release of the special parameters.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a carrier management method and an evolved base station in a multi-carrier system. Background technique [0002] In the Evolved Universal Terrestrial Radio Access Network (E-UTRAN for short) of the third-generation mobile communication Long Term Evolution (LTE for short) system, the uplink data passes through the physical uplink Physical Uplink Shared Channel (PUSCH for short) transmission. An evolved base station (Evolved NodeB, eNB for short) allocates uplink radio resources to each user terminal (User Equipment, UE for short). The access technology adopted by E-UTRAN is OFDM (Orthogonal Frequency Division Multiplexing) technology. Compared with the second-generation mobile communication system, the radio resource management of E-UTRAN system has a large bandwidth and multiple time processes. Its wireless resources appear in two dimensions of time and frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W88/08H04B7/26
CPCH04L5/0064H04L5/0007H04W72/04H04L5/0037Y02D30/70
Inventor 戴谦施小娟
Owner ZTE CORP
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