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Method and system for transmitting scheduling information

A technology for dispatching information and signaling, which is applied in the field of wireless communication, can solve problems such as no solution provided, multi-computing energy, etc., and achieve the effect of avoiding energy consumption, avoiding invalid calculation and energy loss

Active Publication Date: 2011-04-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the UE works on multiple carriers, the continuous detection of the assigned PDCCH by the UE needs to consume more calculations and more energy. How to enable the UE to effectively detect the PDCCH without packet loss is not provided by the existing protocols. reasonable solution

Method used

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  • Method and system for transmitting scheduling information
  • Method and system for transmitting scheduling information
  • Method and system for transmitting scheduling information

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0072] In the LTE system, a UE is located in a serving cell and is in a connected state, and the UE has an uplink and a downlink working carrier respectively. The UE needs to continuously detect the PDCCH, and detect its own PDCCH according to its own RNTI. In order to realize the present invention, the network side notifies the UE of the scheduling information of the next time period through the air interface signaling. After receiving the scheduling information, the UE will know in advance when the network will schedule itself, and the UE can detect the PDCCH at an appropriate time. Ineffective operation and energy loss caused by continuous PDCCH detection are avoided.

[0073] The network side transmits the scheduling information through radio resource control (Radio Resource Control, referred to as RRC) signaling, medium access control layer signaling, or physical downlink control channel (Physical Downlink Control Channel, referred to as PDCCH) and other air interface sig...

example 2

[0082] The application scenario of Example 2 is an LTE Advance system, and the UE is in an idle state in a carrier aggregation cell. The component carriers contained in the carrier aggregation cell are in Band 1 (Band 1), there are three consecutive component carriers CC(f1), CC(f2), and CC(f3) in the downlink, and there are also three consecutive carrier CCs in the uplink ( f4), CC(f5), CC(f6), it should be noted that in this example 2, the frequency information of each component carrier is used to identify the component carrier, but the present invention does not limit the way of carrier identification. The three downlink carriers all send system messages and paging messages.

[0083] At a certain moment, the UE initiates random access on the uplink CC (f4) and downlink CC (f1), and successfully accesses the cell of the carrier aggregation. Since the UE supports multiple carriers and has a large traffic flow, the base station allocates component carriers UL CC (f5) and DL C...

example 3

[0092] The application scenario of this example is an LTE Advance system, and the UE is in an idle state in a carrier aggregation cell. The component carriers contained in the carrier aggregation cell are in Band 1 (Band 1), there are three consecutive component carriers CC(f1), CC(f2), and CC(f3) in the downlink, and there are also three consecutive carrier CCs in the uplink ( f4), CC(f5), CC(f6), it should be noted that in this example, the frequency information of each component carrier is used to identify the component carrier, but the present invention does not limit the way of carrier identification. The three downlink carriers all send system messages and paging messages.

[0093] At a certain moment, the UE initiates random access on the uplink CC (f4) and downlink CC (f1), and successfully accesses the cell of the carrier aggregation. Since the UE supports multiple carriers and has a large traffic flow, the base station allocates component carriers UL CC (f5) and UL ...

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Abstract

The invention discloses a method and a system for transmitting scheduling information. A network informs user equipment (UE) of scheduling information in a next time period through air interface signaling; after receiving the scheduling information, the UE detects a physical downlink control channel according to the received scheduling information in the next time period; and air interface signaling may be wireless resource control signaling, medium access control layer signaling or physical downlink control channel signaling. When the method and the system of the invention are used, the UE can know when to be scheduled by the network in advance and thus can detect a physical downlink control channel (PDCCH) at a proper time and selectively monitor the PDCCH to avoid ineffective calculation and energy loss, which are caused by continuous PDCCH detection.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and system for scheduling information transmission. Background technique [0002] The evolved wireless communication system can provide higher transmission rate and shorter transmission delay, and can support the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, referred to as 3GPP) between internal access systems and 3GPP Mobility between access systems and non-3GPP access systems. [0003] figure 1 It is a schematic diagram of a next-generation network architecture for a long-term evolution (Long Term Evolution, referred to as LTE) system / system architecture evolution (System Architecture Evolution, referred to as SAE), as shown in figure 1 As shown, it includes an evolved radio access network (Evolved Radio Access Network, referred to as E-RAN) and an evolved packet core network (Evolved Packet Core Network, referred ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W72/12
CPCH04W72/1289Y02D30/70H04W72/23
Inventor 邓云
Owner ZTE CORP
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