Handling downlink semi-persistent scheduling retransmission in wireless networks

A downlink and link transmission technology, applied in the long-term evolution medium access control process, discontinuous reception operation and potential downlink semi-persistent scheduling retransmission field, can solve problems such as multiple power consumption

Active Publication Date: 2015-12-02
AVAGO TECH INT SALES PTE LTD
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  • Abstract
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  • Claims
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Problems solved by technology

Also, according to said specification, the DRX retransmission timer for the previous packet will not be stopped, therefore, the UE will have to monitor additional subframes, which leads to more power consumption

Method used

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  • Handling downlink semi-persistent scheduling retransmission in wireless networks
  • Handling downlink semi-persistent scheduling retransmission in wireless networks
  • Handling downlink semi-persistent scheduling retransmission in wireless networks

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Embodiment Construction

[0030] The present inventions now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Throughout, like numerals designate like parts.

[0031] As used in this application, the term "circuitry" means all of the following: (a) purely hardware circuit implementations (e.g., in purely analog and / or digital circuit implementations) and (b) circuits and software (and / or firmware) a combination of, for example, (if applicable); a combination of (i) a processor or (ii) a processor / software (including a digital signal processor), software, and memory that work together to cause a device (e.g., mobile phone or server) to perform various functi...

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Abstract

During discontinue reception (DRX) operation of a mobile terminal of a wireless communications network, methods to ensure that user equipment is in an awake mode when a network node sends a scheduling grant on the physical downlink control channel (PDCCH). Dynamic scheduling (DS) and semi-persistent scheduling (SPS) grants may appear on PDCCH only once. One method defines every received downlink (DL) semi- persistent scheduling (SPS) signal in a subframe as active time in a configured DRX cycle and includes in said defining active time any occurrence of a DL assignment being configured for the subframe. A second method receives an indication of a downlink transmission or a configured downlink assignment configured for the current PDCCH subframe, starts a Hybrid Automatic Repeat request (HARQ) Round Trip Timer (RTT) whether UE is in active time or not, and stops a drx-RetransmissionTimer for the corresponding HARQ process whether UE is in active time or not.

Description

technical field [0001] The embodiments described in this application relate to a wireless network communication technology, and specifically relate to a long-term evolution (LTE) medium access control (MAC) procedure. More specifically, it relates to discontinuous reception (DRX) operations and potential downlink (DL) semi-persistent scheduling (SPS) retransmissions. Background technique [0002] According to the LTEMAC regulation, DRX operation is controlled by several timers, such as duration timer, DRX inactivity timer, DRX retransmission timer, hybrid automatic repeat request round trip timer (HARQRTT, HybridAutomaticRepeatRequestRoundTripTimer) and so on. For DRX operation, a user equipment (UE) in the active phase monitors the physical downlink control channel (PDCCH) for uplink (UL) grants and DL assignments. The activation period is defined in the network specification as follows: [0003] [0004] [0005] If the DRX retransmission timer is running, then the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10
CPCH04W16/10H04W72/042H04W76/048H04W76/28H04W72/23H04L5/0053H04L5/14
Inventor 白伟王海明
Owner AVAGO TECH INT SALES PTE LTD
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