WO2011038625A1 - 一种不连续接收配置方法及系统 - Google Patents

一种不连续接收配置方法及系统 Download PDF

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Publication number
WO2011038625A1
WO2011038625A1 PCT/CN2010/076507 CN2010076507W WO2011038625A1 WO 2011038625 A1 WO2011038625 A1 WO 2011038625A1 CN 2010076507 W CN2010076507 W CN 2010076507W WO 2011038625 A1 WO2011038625 A1 WO 2011038625A1
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WIPO (PCT)
Prior art keywords
component carrier
primary component
drx
state
timer
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PCT/CN2010/076507
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English (en)
French (fr)
Inventor
张健
张银成
王冠宙
陈思
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to BR112012006818A priority Critical patent/BR112012006818A2/pt
Priority to KR1020127010881A priority patent/KR101418806B1/ko
Priority to MX2012003708A priority patent/MX2012003708A/es
Priority to US13/496,639 priority patent/US8693381B2/en
Priority to JP2012531221A priority patent/JP2013506357A/ja
Priority to EP10819854.0A priority patent/EP2469939B1/en
Publication of WO2011038625A1 publication Critical patent/WO2011038625A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/28Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0096Indication of changes in allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0096Indication of changes in allocation
    • H04L5/0098Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for configuring a multi-carrier discontinuous reception (DRX).
  • DRX discontinuous reception
  • the third generation mobile communication Long Term Evolution (LTE) system consists of Evolved Universal Terrestrial Radio Access Network (E-UTRAN), User Equipment (UE, User Equipment), and evolved packet core. Network (EPC) composition.
  • the E-UTRAN is composed of an enhanced base station (eNB), which may also be called an eNB; the UE may also be called a terminal; the EPC includes a mobility management entity (MME), a packet data network gateway (P-GW), and a service gateway ( S-GW).
  • MME mobility management entity
  • P-GW packet data network gateway
  • S-GW service gateway
  • the eNB may configure the DRX function for the UE through the Radio Resource Control Protocol (RRC) to control the UE to monitor the physical downlink control channel control connection state. If DRX is configured, the UE is allowed. The PDCCH is not continuously monitored; otherwise the UE continuously monitors the PDCCH.
  • RRC Radio Resource Control Protocol
  • the RRC configures the timers and related parameters required for DRX operation, including: duration timer; DRX inactivity time timer; DRX retransmission timer, except for receiving the downlink hybrid automatic repeat request (HARQ) process dedicated to the broadcast control channel
  • HARQ downlink hybrid automatic repeat request
  • Each downlink HARQ process is configured with one of the timers; a long DRX cycle; and a DRX start offset value.
  • Each downlink HARQ process in addition to receiving a downlink HARQ process dedicated to the broadcast control channel, is also configured with a HARQ loopback time timing crying port.
  • PDCCH subframe can represent any subframe;
  • PDCCH subframe refers only to downlink subframe and special including DwPTS Subframe.
  • Activity time refers to the time when the UE listens to the PDCCH in the PDCCH subframe.
  • the media access control competition resolution timer refers to: the UE sends a message of the random access procedure.
  • the UE should monitor the number of consecutive PDCCH subframes of the PDCCH.
  • the DRX cycle refers to: The duration is accompanied by a periodic repetition of a possible period of inactivity.
  • the DRX inactivity timer defines the number of consecutive PDCCH subframes after the UE successfully decodes the PDCCH indicating that the UE's initial uplink (Uplink) or downlink (Downlink) user data transmission.
  • the DRX retransmission timer defines the maximum number of consecutive PDCCH subframes when the UE starts to expect downlink retransmission.
  • the DRX short cycle timer defines the number of consecutive subframes in which the UE follows the short DRX cycle.
  • the HARQ loopback time timer defines the minimum number of subframes before the UE expects downlink HARQ retransmission.
  • the duration timer defines the number of consecutive PDCCH subframes at the start of the DRX cycle.
  • Figure 1 shows the basic working principle of the existing LTE system DRX: When the DRX cycle is configured, the UE's active time includes a duration timer, or a DRX inactivity timer, or a DRX retransmission timer, or media access.
  • C-RNTI Cell Radio Network Temporary Identity
  • the duration timer is started in the corresponding subframe. For TDD mode, the duration timer can be started in the uplink subframe.
  • the SFN is the number of system frames in which the subframe is recorded; the subframe number is the number of subframes; the shortDRX-Cycle is a short DRX cycle; the drxStartOffset is a DRX start offset; and the longDRX-Cycle is a long DRX cycle.
  • the DRX retransmission timer is started for the corresponding HARQ process.
  • the duration timer is stopped; the DRX inactivity timer is stopped.
  • the DRX inactivity timer expires or the DRX command MAC CE is received in the subframe: If a short DRX cycle is configured, the DRX short cycle timer is started or restarted, using a short DRX cycle; otherwise, a long DRX cycle is used.
  • the UE needs to perform the following operations:
  • the HARQ loopback time timer is started for the corresponding HARQ process; and the DRX retransmission timer is stopped for the corresponding HARQ process.
  • the DRX inactivity timer is started or restarted.
  • the UE receives or transmits HARQ feedback.
  • LTE-A Long-Term Evolution
  • the carrier aggregation technique can aggregate two or more component carriers to support a wider frequency band, for example, reaching 100 MHz and frequency aggregation.
  • the UE can receive/transmit data on one or more component carriers at the same time, and can be configured to aggregate different numbers of component carriers having different bandwidths in the downlink/uplink.
  • Each component carrier corresponds to one HARQ entity and a transport channel.
  • Each of the downlink component carriers has a separate PDCCH indicating a resource allocation on the component carrier or a resource allocation on another component carrier, and is divided into a downlink resource allocation or an uplink grant, and the PDCCH has a 0 ⁇ 3 bit indication component carrier. Identification information.
  • the extended component carrier there may also be no PDCCH, and its resource allocation is indicated by relying on other component carriers with PDCCH.
  • One serving cell can be set as the primary serving cell, which is the preferred or primary cell for measurement reference, handover, random access.
  • a backward compatible component carrier a non-backward compatible component carrier, or an extension carrier may be configured.
  • the backward compatible component carrier can provide UE access of the LTE system and the LTE-A system, and provides a system message, a synchronization channel, a random access resource, a physical downlink control channel PDCCH, and the like.
  • the non-backward compatible component carrier can provide the UE access of the LTE-A system, and provides the system message, the synchronization channel, the random access resource, and the like, and may or may not configure the physical downlink control channel PDCCH to perform downlink resources through the PDCCH of other component carriers.
  • the above two component carriers can exist independently.
  • Extended component carriers generally exist as resources, may provide some enhancement or extension functions, use different control signaling formats, may or may not provide system information, and may or may not be configured with physical downlink control signals. Road.
  • DRX with consistent component carriers all component carriers use a DRX configuration and follow the same DRX behavior.
  • Component carrier independent DRX Each component carrier is configured with DRX, and its DRX behavior is independent of each other.
  • DRX based on primary component carrier DRX is configured on the primary component carrier, and the DRX configuration and behavior of other non-primary carriers are partially or completely subordinate to the primary component carrier.
  • the DRX scheme based on the primary carrier and the other two DRX schemes are currently only in the constructive phase, and specific solutions have not yet been clarified. Summary of the invention
  • the main purpose of the present invention is to provide a DRX configuration method and system, and improve and implement the DRX solution based on the primary carrier in the envisioned stage.
  • a discontinuous reception method comprising: configuring discontinuous reception (DRX) for a plurality of component carriers, using one or more component carriers as a primary component carrier; determining other related non-primary component carriers by the primary component carrier DRX.
  • DRX discontinuous reception
  • the primary component carrier includes a DRX state, and the DRX state includes an active state and an inactive state;
  • the non-primary component carrier includes a DRX state and a sleep state; wherein the DRX state includes an active state and an inactive state.
  • the DRX state of the primary component carrier is configured to support a long DRX cycle; optionally, the configuration supports or does not support a short DRX cycle; optionally, the non-primary component carrier is configured to: support or not support a long DRX cycle, when When the long DRX cycle is not supported, the DRX state is determined to be active or inactive according to the control signaling of the primary component carrier;
  • the sleep state is: a closed state or a deactivated state of the component carrier; after being turned on or activated, the DRX state can be entered from the sleep state; when entering the DRX state, being in an active state or an inactive state;
  • the component carrier in the dormant state cannot be scheduled; the component carrier in the dormant state is not used for data transmission and reception; that is, the PDCCH is not monitored and the PDSCH is not received.
  • the method further includes: configuring a relationship between the primary component carrier and the cell, where the configuration specifically includes: the primary component carrier is associated with a service cell or a primary serving cell in a radio resource control protocol (RRC) connection state.
  • RRC radio resource control protocol
  • the method further includes: configuring a relationship between the primary component carrier and the user equipment (UE), where the configuration specifically includes: the primary component carrier corresponds to the current UE; and the primary component carrier corresponding to the current UE is compared to other UEs, Configured as a primary component carrier or as a non-primary component carrier.
  • UE user equipment
  • the method further includes: configuring a relationship between a primary component carrier and a channel, where the configuration specifically includes: a primary component carrier as a backward compatible component carrier, or a non-backward compatible component carrier, and a physical downlink control channel (PDCCH) needs to be configured;
  • a primary component carrier as a backward compatible component carrier, or a non-backward compatible component carrier, and a physical downlink control channel (PDCCH) needs to be configured;
  • PDCCH physical downlink control channel
  • the configuration relationship between the non-primary component carrier and the channel specifically includes: the non-primary component carrier is used as the backward compatible component carrier, or the non-backward compatible component carrier or the extended component carrier, and the PDCCH is configured or not.
  • the downlink resource allocation or the uplink grant of the non-main component carrier that is not currently configured with the PDCCH is further performed by the PDCCH of the primary component carrier or other non-main component carrier configured with the PDCCH. Instructions.
  • the DRX of the non-primary component carrier is controlled by the primary component carrier, and the primary component carrier controls the DRX of the non-primary component carrier by using control signaling or a preset condition.
  • the primary component carrier controls the non-primary component carrier DRX by transmitting control signaling from the enhanced base station (eNB) to the non-primary component carrier; or
  • the non-primary component carrier is determined according to the DRX configuration or DRX behavior of the primary component carrier. DRX configuration or DRX behavior of the former non-primary component carrier.
  • the control signaling specifically includes: a medium access control element (MAC CE) or PDCCH signaling or RRC signaling; and the manner in which the non-primary component carrier receives the eNB control signaling from the primary component carrier further includes:
  • MAC CE medium access control element
  • PDCCH Physical Downlink Control Channel
  • RRC Radio Resource Control
  • the control signaling specifically includes: MAC CE or PDCCH signaling or RRC signaling; in a state transition scenario in which a short DRX cycle and a long DRX cycle are mutually migrated, the method further includes: The MAC CE sent by the primary component carrier triggers the state transition, which specifically includes: the primary component carrier transmits the MAC CE sent by the eNB, and notifies the current non-primary component carrier to migrate from the short DRX cycle to the long DRX cycle; or, the primary component carrier passes the eNB.
  • the transmitted MAC CE notifies that the current non-primary component carrier is cyclically migrated from the long DRX cycle to the short DRX cycle; or the non-primary component carrier migrates from the long DRX cycle to the short DRX cycle, according to the downlink allocation indicated by the PDCCH received on the primary component carrier, Or when the uplink grants data reception or transmission of the component carrier, the DRX inactivity time timer is started, and when the DRX inactivity time timer expires, the short DRX cycle is entered;
  • the method further includes: triggering the state transition by the MAC CE sent by the eNB on the non-primary component carrier, specifically: the eNB sends a MAC CE on the current non-primary component carrier, and notifies that the current non-primary component carrier is short
  • the DRX loop migrates to the long DRX cycle; or, the eNB sends a MAC CE on the current non-primary component carrier, notifying that the current non-primary component carrier is migrating from the long DRX cycle to the short DRX cycle.
  • the eNB notifies the current non-primary component carrier trigger state transition, which specifically includes: the current non-primary component carrier is based on the primary component carrier, or the MAC sent on the current non-primary component carrier.
  • CE implements mutual migration between short DRX cycles and long DRX cycles;
  • the current non-main component carrier performs mutual migration between the short DRX cycle and the long DRX cycle according to the preset condition.
  • the preset condition specifically includes: the activity of the service, or the DRX short cycle timer on the primary component carrier expires. .
  • the control signaling specifically includes: MAC CE or PDCCH signaling or RRC signaling; in a state transition scenario in which the DRX state transitions to the sleep state,
  • the method further includes: migrating the current non-primary component carrier from the DRX state to the dormant state according to the primary component carrier or the MAC CE transmitted on the current non-primary component carrier; or transmitting according to the primary component carrier or the current non-primary component carrier PDCCH signaling transitions from the DRX state to the dormant state; or migrates from the DRX state to the dormant state according to the RRC deactivation signaling; or, the current non-primary component carrier migrates from the DRX state to the dormant state according to a preset condition; wherein, the preset condition Specifically, it includes: the activity of the service, or the DRX short cycle timer on the primary component carrier times out.
  • the control signaling specifically includes: MAC CE or PDCCH signaling or RRC signaling; in a state transition scenario in which the sleep state transitions to the DRX state,
  • the method further includes: the current non-primary component carrier transitioning from a sleep state to a DRX state according to PDCCH signaling transmitted on the primary component carrier.
  • the non-primary component carrier when the primary component carrier is in a short DRX cycle, the non-primary component carrier is in a short DRX cycle or in a long DRX cycle or in a sleep state;
  • the non-primary component carrier When the primary component carrier is in a long DRX cycle, the non-primary component carrier is in a long DRX cycle or is in a sleep state.
  • the MAC CEs of different uses respectively use different logical channel identifier indications, where
  • the status of the MAC CE includes: entering a long DRX cycle, entering a short DRX cycle, or entering a sleep state.
  • the method further configuring a timer of the non-primary component carrier; Includes:
  • the non-primary component carrier is further configured with an independent DRX inactivity time timer
  • the non-primary component carrier is further configured with an independent DRX inactivity time timer, and a duration timer;
  • the non-primary component carrier is further configured with an independent DRX inactivity time timer, or a duration timer;
  • the non-primary component carrier further configures a DRX short cycle timer, and controls a migration scenario between the DRX cycles according to the DRX short cycle timer;
  • the non-primary component carrier is further not configured with the DRX short cycle timer, but still can support the short DRX cycle and the long DRX cycle and their mutual migration;
  • the non-primary component carrier is further not configured with an independent DRX inactivity time timer; or, the non-primary component carrier is further not configured with an independent duration timer.
  • the non-primary component carrier configures the independent DRX inactivity time timer
  • the other part or all of the DRX configuration follows the DRX configuration of the primary component carrier
  • non-primary component carrier configures the independent DRX inactivity time timer and the duration timer
  • other part or all of the DRX configuration follows the DRX configuration of the primary component carrier
  • the value of the DRX inactivity time timer or the duration timer is smaller than the corresponding timer of the primary component carrier.
  • the non-primary component carrier When the non-primary component carrier is not configured with an independent DRX inactivity time timer, when the DRX inactivity time timer of the primary component carrier is started or restarted, the non-primary component carrier correspondingly extends the time and the active state of the active state.
  • the component carriers are consistent;
  • Non-primary component when the non-primary component carrier is not configured with an independent duration timer The carrier enters the DRX active state according to the PDCCH signaling or the duration timer of the primary component carrier, and automatically enters the DRX inactive state or the sleep state when the DRX inactivity timer of the primary component carrier times out or when the duration timer expires.
  • the DRX inactivity time timer configured by the primary component carrier and each non-primary component carrier is independently started or restarted according to the scheduling condition of the component carrier.
  • each non-primary component carrier is consistent or independent of each other; when each non-primary component carrier is configured with a duration timer, the subframe in which the duration timer is started is consistent with the duration of the primary component carrier The subframe alignment in which the time timer is started is aligned;
  • the retransmission timer and the HARQ loopback time timer are separately configured for each downlink HARQ process;
  • the values of the transmission timer and the HARQ loopback time timer are the same or different from the values of the timers corresponding to the primary component carriers.
  • the DRX behavior of the primary component carrier further follows the DRX behavior and principles in the LTE system, or is compatible with the DRX behavior and principles of the LTE system, and further follows other extended functions.
  • the DRX behavior of the non-primary component carrier further or partially follows the DRX behavior and principle in the LTE system, and receives control signaling of the primary component carrier, and performs corresponding DRX behavior according to the control signaling;
  • the non-primary component carrier performs a consistent DRX behavior according to the DRX configuration and behavior of the primary component carrier;
  • the non-primary component carrier performs the corresponding DRX behavior according to the preset condition according to the DRX configuration and behavior of the primary component carrier.
  • the method further includes: a process of the interaction scheduling request (SR) between the UE and the eNB, and the process of responding to the SR, specifically:
  • SR interaction scheduling request
  • the UE sends an SR to the eNB it may be sent on a component carrier arbitrarily configured with a dedicated physical uplink control channel (PUCCH) resource, or sent on a primary component carrier;
  • PUCCH physical uplink control channel
  • the primary component carrier is further kept in an active state, at least until an uplink grant is received or the SR transmission reaches a maximum number of times; or, all component carriers are further kept active, at least until an uplink grant or SR is received.
  • the sending arrives at the maximum number of times; when the eNB responds to the SR sent by the UE, it further restricts sending the uplink grant on the primary component carrier; or sends the uplink grant on the component carrier in any active state.
  • a discontinuous reception configuration system comprising: a selection and configuration unit, and a control unit;
  • a selection and configuration unit configured to configure DRX for multiple component carriers, and select one or more component carriers as the primary component carrier
  • control unit configured to control DRX of other non-primary component carriers related by the primary component carrier.
  • the system further includes: a state control unit, configured to control a state of the primary component carrier, specifically: a DRX state; wherein, the DRX state includes an active state and an inactive state;
  • a state control unit configured to control a state of the primary component carrier, specifically: a DRX state; wherein, the DRX state includes an active state and an inactive state;
  • the method specifically includes: a DRX state and a sleep state; wherein the DRX state includes an active state and an inactive state.
  • the system further includes: a configuration unit of a primary component carrier and a cell relationship, and a configuration unit of a relationship between the primary component carrier and the UE;
  • a configuration unit of a primary component carrier and a cell relationship configured to configure a primary component carrier to be associated with a serving cell or a primary serving cell in an RRC connected state
  • a configuration unit of the primary component carrier and the UE is configured to configure the primary component carrier to correspond to the current UE; and the primary component carrier corresponding to the current UE is configured as a primary component carrier or a non-primary component carrier with respect to other UEs.
  • the system further includes: a configuration unit of a primary component carrier and a channel relationship, and a configuration unit of a non-primary component carrier and a channel relationship; wherein,
  • the configuration unit of the non-primary component carrier and the channel relationship is configured to configure the PDCCH or not to configure the PDCCH when the non-primary component carrier is used as the backward compatible component carrier or the non-backward compatible component carrier or the extended component carrier.
  • the present invention configures DRX for a plurality of component carriers, selects one or more component carriers as the primary component carrier, and controls the DRX of the associated other non-primary component carriers by the selected primary component carrier.
  • the DRX scheme based on the primary carrier is clarified, and the DRX configuration scheme based on the primary carrier in the conception phase is improved and implemented.
  • FIG. 1 is a schematic diagram of a basic working principle of an existing LTE system DRX
  • FIG. 2 is a schematic diagram of an implementation process of the method of the present invention.
  • FIG. 3 is a schematic diagram of a DRX state of a primary component carrier in an LTE-A carrier aggregation system
  • FIG. 4 is a DRX state of a non-primary component carrier in an LTE-A carrier aggregation system
  • FIG. 5 is a schematic diagram of a DRX configuration and a DRX behavior scenario of a primary component carrier and a non-primary component carrier in an LTE-A carrier aggregation system. detailed description
  • the basic idea of the present invention is to: configure DRX for a plurality of component carriers, use one or more component carriers as a primary component carrier, and control DRX of other related non-primary component carriers by the selected primary component carrier.
  • a DRX method includes the following steps:
  • Step 101 Configure DRX for multiple component carriers, and select one or more component carriers as the primary component carrier.
  • the DRX finger is configured for a plurality of component carriers: DRX is separately configured for the primary component carrier and the non-primary component carrier of the plurality of component carriers.
  • Step 102 Determine, by the primary component carrier, a DRX of another related non-primary component carrier.
  • the primary component carrier includes a DRX state, wherein the DRX state includes an active state, and an inactive state.
  • the non-primary component carrier includes a DRX state, and a sleep state; wherein the DRX state also includes an active state, and an inactive state.
  • the sleep state includes a deactivated state.
  • the DRX state of the primary component carrier can support a long DRX cycle.
  • the DRX state of the primary component carrier and the non-primary component carrier may or may not support a short DRX cycle.
  • the long DRX cycle may or may not be supported, and the DRX state is determined to be active or inactive only according to the control signaling of the primary component carrier.
  • the sleep state of the non-primary component carrier refers to: a closed state or a deactivated state of the component carrier.
  • the DRX state can be entered from the sleep state. When entering the DRX state, it can be active or inactive.
  • the component carrier in the dormant state cannot be scheduled; the component carrier in the dormant state is not used for data transmission and reception.
  • the primary component carrier is associated with the serving cell or the primary serving cell in the RRC connected state.
  • the primary component carrier is the UE Specifically, that is, the primary component carrier corresponding to a certain UE may be a primary component carrier or a non-primary component carrier for another UE.
  • the primary component carrier is a backward compatible component carrier or a non-backward compatible component carrier, and the PDCCH needs to be configured.
  • the non-primary component carrier is a backward compatible component carrier or a non-backward compatible component carrier or a extended component carrier, and may or may not be configured with a PDCCH.
  • the downlink resource allocation or the uplink grant is performed by the primary component carrier or other non-primary component carrier configured with the PDCCH for the non-primary component carrier that does not configure the PDCCH, and the PDCCH is used. Instructions.
  • the primary component carrier controls the DRX of the non-primary component carrier by using control signaling or a preset condition; wherein, the control signaling is a media access control element (MAC) CE) or PDCCH signaling or RRC signaling.
  • control signaling is a media access control element (MAC) CE) or PDCCH signaling or RRC signaling.
  • MAC media access control element
  • the primary component carrier controls the DRX of the non-primary component carrier through control signaling, and further sends the control signaling from the eNB to The non-primary component carrier is implemented; or, the non-primary component carrier determines the DRX behavior of the component carrier according to the DRX configuration or the DRX behavior of the primary component carrier.
  • the control signaling may be MAC CE or PDCCH signaling or RRC signaling; the non-primary component carrier further receives eNB control signaling from the primary component carrier by: PDCCH on the primary component carrier, or PDCCH configured by the component carrier Or a PDCCH configured by other non-primary component carriers; or a MAC CE received through the primary component carrier or a MAC CE received through the component carrier.
  • the primary component carrier For the state transition triggered by the MAC CE sent by the eNB on the primary component carrier, and the state transitions to a scenario of mutual migration between the short DRX cycle and the long DRX cycle, the primary component carrier further passes through a MAC CE sent by the eNB. Notifying the non-primary component carrier by the short DRX cycle Migrating to a long DRX cycle; the primary component carrier further passes through a MAC CE sent by the eNB, notifying the non-primary component carrier to migrate from the long DRX cycle to the short DRX cycle.
  • the eNB For the scenario transition triggered by the MAC CE transmitted by the eNB on the non-primary component carrier, and the state transitions to the scenario of mutual migration between the short DRX cycle and the long DRX cycle, the eNB further transmits a MAC CE on the non-primary component carrier. Notifying that the non-primary component carrier is migrating from the short DRX cycle to the long DRX cycle; the eNB further transmitting a MAC CE on the non-primary component carrier, notifying that the non-primary component carrier is migrating from the long DRX cycle to the short DRX cycle.
  • the non-primary component carrier may be migrating from the long DRX cycle to the short DRX cycle, and may also start the DRX inactivity time timer according to the downlink allocation or the uplink grant indicated by the PDCCH indication on the primary component carrier to receive or transmit data of the component carrier.
  • the DRX inactivity time timer expires, it enters the short DRX cycle.
  • the trigger state transition is notified by the MAC CE sent by the eNB on the primary component carrier or the MAC CE sent by the eNB on the non-primary component carrier, and the non-primary component carrier realizes the mutual migration process between the short DRX cycle and the long DRX cycle.
  • the method further includes: performing mutual migration between the short DRX cycle and the long DRX cycle according to the primary component carrier or the MAC CE sent on the non-main component carrier; or the non-primary component carrier performs the short DRX cycle and the long DRX cycle according to the preset condition. Mutual migration between each other.
  • the preset condition is the activity of the service, for example, when the duration timer of the number of times expires and the UE does not receive the downlink resource allocation or the uplink authorization during this period, the trigger condition may be used as a trigger condition; or, the preset condition is a primary component.
  • the DRX short cycle timer on the carrier times out.
  • the state transition is a migration scenario in which the DRX state transitions to the dormant state, and the non-primary component carrier is further transmitted according to the primary component carrier or a MAC CE sent on the primary non-primary component carrier, or according to the primary component carrier or the non-primary component carrier.
  • a PDCCH signaling transitions from a DRX state to a sleep state; or transitions from a DRX state to a sleep state according to RRC deactivation signaling; or transitions from a DRX state to a sleep state according to a preset condition.
  • the preset condition is business Or receiving, that is, a consecutive preset number of duration timers expired and the UE does not receive downlink resource allocation or uplink grant during this period as a trigger condition; or, the preset condition is a DRX short cycle timer on the primary component carrier. time out. It should be noted that: migrating from the DRX state to the dormant non-primary component carrier migrates from the sleep state to the DRX state according to a PDCCH signaling sent on the primary component carrier.
  • the non-primary component carrier migrates from the sleep state to the DRX state, it may be in an active state or an inactive state in the DRX state, and the duration timer and the DRX start offset value are jointly determined.
  • the non-primary component carrier may further be in a short DRX cycle or in a long DRX cycle or in a sleep state.
  • the non-primary component carrier may further be in a long DRX cycle or in a sleep state.
  • the MAC CE For MAC CE, different MAC CEs use different logical channel identification indications.
  • the MAC CE includes: entering a long DRX cycle, entering a short DRX cycle, and entering a sleep state.
  • the DRX configuration of the primary component carrier needs to include, but is not limited to, all current DRX configurations in the LTE system.
  • the method includes: RRC configuring a timer and related parameters required for the operation of the primary component carrier DRX, including but not limited to: a duration timer; a DRX inactivity time timer; a DRX retransmission timer; and a downlink HARQ dedicated to receiving the broadcast control channel Outside the process, each downlink HARQ process configures one of the timers; a long DRX cycle; and a DRX start offset value.
  • each downlink HARQ process is configured with a HARQ loopback time timer in addition to the downlink HARQ process dedicated to the broadcast control channel.
  • the DRX configuration of the non-primary component carrier may include, but is not limited to, all current DRX configurations in the LTE system.
  • the method includes: RRC configuring a timer and related parameters required for the operation of the primary component carrier DRX, including but not limited to: a duration timer; a DRX inactivity time timer; a DRX retransmission timer, except for receiving a downlink HARQ dedicated to the broadcast control channel Outside the process, each downlink HARQ process configures one of the timers; a long DRX cycle; and a DRX start offset value.
  • Each downlink HARQ process is configured with a HARQ loopback time timer in addition to the downlink HARQ process dedicated to the broadcast control channel.
  • the compatibility of the LTE-A system with the LTE system also needs to be considered, which is different from the above-mentioned DRX configuration
  • the DRX configuration of the non-primary component carrier may also include It is not limited to a partial DRX configuration in an LTE system.
  • These include, but are not limited to, one or more of the following: duration timer; DRX inactivity time timer; DRX retransmission timer, each downlink HARQ process configuration except for receiving the downlink hybrid HARQ process dedicated to the broadcast control channel The timer; long DRX cycle; DRX start offset value; optional DRX short cycle timer and short DRX cycle.
  • Each downlink HARQ process is configured with a HARQ loopback time timer in addition to the downlink HARQ process dedicated to the broadcast control channel.
  • the non-primary component carrier is further configured with only a separate DRX inactivity time timer. Applicable to scenarios where only a separate DRX inactivity time timer is configured.
  • the other part or all of the DRX configuration follows the DRX configuration of the primary component carrier.
  • the non-primary component carrier is only configured with independent DRX inactivity time timer and duration timer. Suitable for not only independent configuration D RX inactivity time timer, also configures the duration timer scene.
  • the other part or all of the DRX configuration follows the DRX configuration of the primary component carrier.
  • the DRX inactivity time timer in the scenario where the non-primary component carrier is configured with an independent DRX inactivity time timer or a duration timer, the DRX inactivity time timer, or the duration timer.
  • the value is smaller than the value of the corresponding timer of the primary component carrier, or equal to the value of the corresponding timer of the primary component carrier, or greater than the value of the corresponding timer of the primary component carrier.
  • the non-primary component carrier can also configure the DRX short cycle timer and control the migration scenario between the DRX cycles according to the timer.
  • the DRX inactivity time timer configured on the primary component carrier and each non-primary component carrier is independently started or restarted according to the scheduling condition of the component carrier.
  • the non-primary component carrier is further configured with no independent DRX inactivity time timer.
  • the non-primary component carrier correspondingly extends its active state to be consistent with the primary component carrier.
  • the non-primary component carrier is further configured with no independent duration timer, and the non-primary component carrier enters the DRX active state according to the PDCCH signaling of the primary component carrier, and automatically enters the DRX inactive state when the DRX inactivity timer of the primary component carrier times out. Or sleep state.
  • the DRX configurations of the respective non-primary component carriers are consistent or independent of each other.
  • each non-primary component carrier is configured with a duration timer
  • the subframe in which the timer is started is aligned with the subframe in which the duration timer of the primary component carrier is started.
  • non-primary component carrier is not configured with the DRX short cycle timer, but can still support Short DRX cycles and long DRX cycles and their mutual migration.
  • the DRX retransmission timer and the HARQ loopback time timer of the non-primary component carrier are respectively configured for each downlink HARQ process; the value of the corresponding timer is consistent with or different from the value of the corresponding timer of the primary component carrier.
  • the DRX behavior of the primary component carrier is further subject to the DRX behavior and principles in the LTE system - see the description in the background art; it can also be compatible with the DRX behavior and principles of the LTE system.
  • the DRX behavior of the primary component carrier is further subject to the DRX behavior and principles in the LTE system - see the description in the background art; it can also be compatible with the DRX behavior and principles of the LTE system.
  • the DRX behavior of the non-primary component carrier For the DRX behavior of the non-primary component carrier, the DRX behavior of the non-primary component carrier partially or completely follows the DRX behavior and principle in the LTE system, and receives the control signaling of the primary component carrier, and performs the corresponding DRX behavior according to the control signaling. Or perform consistent DRX behavior according to the DRX configuration and behavior of the primary component carrier; or perform corresponding DRX behavior according to preset conditions according to the DRX configuration and behavior of the primary component carrier, such as when the DRX short cycle timer of the primary component expires long When the DRX loops, it automatically enters the sleep state.
  • the UE when the UE sends the SR to the eNB, it may transmit on the component carrier arbitrarily configured with the dedicated PUCCH resource, or only on the primary component carrier.
  • the SR and the SR respond to the SR, the eNB limits the transmission of the uplink grant only on the primary component carrier; after the UE sends the SR, the primary component carrier remains active, at least until an uplink grant is received or The SR sends the maximum number of times of arrival; or, when the eNB responds to the SR, the uplink grant can be sent on the component carrier of any active state; after the UE sends the SR, all component carriers remain active, at least until the uplink grant is received or the SR transmission reaches the maximum. frequency.
  • the invention is illustrated by way of example below.
  • FIG. 3 and FIG. 4 are schematic diagrams showing the DRX states of the primary component carrier and the non-primary component carrier in the LTE-A carrier aggregation system and their migration, which are illustrated as follows:
  • the state of the primary component carrier includes a DRX state including active and inactive states; if configured to support short DRX cycles, short DRX cycles and long DRX cycles and their migration are supported.
  • the DRX behavior of the primary component carrier and the state transition between the DRX state and the migration of the short DRX cycle and the long DRX cycle are consistent with the configuration and principles of the LTE system.
  • the state of the non-primary component carrier includes a DRX state and a sleep state; wherein, if the DRX state configuration supports a short DRX cycle, the short DRX cycle and the long DRX cycle and its migration are supported.
  • the non-primary component carrier is not configured, and is controlled to migrate from the short DRX cycle to the long DRX cycle or to the sleep state according to the primary component carrier or the MAC CE or PDCCH signaling on the component carrier; according to the primary component carrier or the component carrier MAC CE or PDCCH signaling is migrating from a long DRX cycle to a short DRX cycle; migrating from a dormant state to a DRX state according to PDCCH signaling on a primary component carrier; a non-primary component carrier may also be referred to as an implicit rule, or may be referred to as a preset Conditions such as the service data scheduling on the component carrier determine the migration between the short DRX cycle and the long DRX cycle or the migration
  • the non-primary component carrier may also completely determine the state transition of the component carrier according to the state transition of the primary component carrier in the DRX state, in accordance with the DRX behavior on the primary component carrier.
  • Mode of operation but its migration from DRX state to hibernation state needs to follow the aforementioned principles There is no similar solution in the LTE system.
  • FIG. 5 is a schematic diagram showing a DRX configuration and a DRX behavior scenario of a primary component carrier and a non-primary component carrier in an LTE-A carrier aggregation system, as follows:
  • the primary component carrier configures the complete set of DRX configurations in the LTE system, follows the DRX behavior consistent with the LTE system, and controls the DRX behavior of the non-primary component carriers accordingly.
  • the non-primary component 1 and the non-primary component carrier 2 are respectively configured with an independent duration timer and a DRX inactivity time timer, and the values of the two timers are smaller than the value of the corresponding timer of the primary component carrier.
  • the two non-primary component carriers and the DRX retransmission timer are each downlink HARQ Each process is configured with one timer, and the values of the timers are consistent with the values of the corresponding timers of the primary component carriers.
  • the two non-primary component carriers are not configured, and their DRX cyclic migration operations are controlled by the primary carrier or according to implicit rules.
  • the downlink resource allocation or uplink grant is received on the first PDCCH passing through the primary component carrier, and its independent DRX inactivity time timer is started, and is automatically used after the DRX inactivity time timer expires.
  • Short DRX cycle the signaling of entering the long DRX cycle or the dormant state sent by the eNB through the primary component carrier may be the corresponding MAC CE or PDCCH signaling, and enter the long DRX cycle or the sleep state. Enter a long DRX loop or go to sleep using different control signaling.
  • the present invention proposes a DRX scheme in carrier aggregation of an LTE-A system, which has the advantages of simple configuration and operation, good compatibility with an LTE system, and superior DRX power saving performance.
  • a DRX configuration system includes: a selection and configuration unit and a control unit.
  • the selection and configuration unit is configured to configure DRX for multiple component carriers, and select one or more component carriers as the primary component carrier.
  • a control unit for controlling the DRX configuration of other non-primary component carriers associated with the primary component carrier.
  • the system further includes: a state control unit, configured to: when controlling a state in which the primary component carrier is located, specifically: a DRX state; wherein the DRX state includes an active state and an inactive state.
  • the state control unit is further configured to: when the state of the non-primary component carrier is controlled, specifically: a DRX state and a sleep state; wherein, the DRX state includes an active state and an inactive state; and the sleep state includes a deactivated state.
  • the system further includes: a configuration unit of the primary component carrier and the cell relationship, and a principal component A configuration unit for the relationship between a carrier and a UE.
  • the configuration unit of the primary component carrier and the cell relationship is configured to configure the primary component carrier to be associated with the serving cell or the primary serving cell in the RRC connected state.
  • a configuration unit of the primary component carrier and the UE is configured to configure the primary component carrier to correspond to the current UE; and the primary component carrier corresponding to the current UE is configured as a primary component carrier or a non-primary component carrier with respect to other UEs.
  • the system further includes: a configuration unit of a primary component carrier and a channel relationship, and a configuration unit of a non-primary component carrier and channel relationship.
  • the PDCCH is configured when the primary component carrier and the channel relationship are configured, and the primary component carrier is used as the backward compatible component carrier or the non-backward compatible component carrier.
  • the configuration unit of the non-primary component carrier and the channel relationship is configured to configure the PDCCH or not to configure the PDCCH when the non-primary component carrier is used as the backward compatible component carrier or the non-backward compatible component carrier or the extended component carrier.
  • radio resource control connection status may be represented by RRC_CONNECTED; the duration timer may be represented by onDurationTimer; the DRX inactivity time timer may be represented by drx-InactivityTimer; the DRX retransmission timer may be used by drx-RetransmissionTimer Representation; Long DRX cycle can be represented by longDRX-Cycle; DRX start offset can be represented by drxStartOffset; DRX short cycle timer can be represented by drxShortCycleTimer; short DRX cycle can be represented by shortDRX-Cycle; HARQ loopback time timer can be used HARQ RTT timer representation; PDCCH subframe can be represented by PDCCH-subframe; active time can be represented by Active Time; media access control contention resolution timer can be represented by mac-ContentionResolutionTimer; DRX cycle can be represented by DRX Cycle; duration can be Use On Duration; activity can be represented by active; in

Description

一种不连续接收配置方法及系统 技术领域
本发明涉及通信领域, 尤其涉及一种多载波不连续接收 (DRX , Discontinuous Reception ) 配置方法及系统。 背景技术
第三代移动通信长期演进 ( LTE, Long Term Evolution ) 系统由演进的 通用陆地无线接入网( E-UTRAN, Evolved Universal Terrestrial Radio Access Network ) 、 用户设备(UE, User Equipment ) 、 演进的分组核心网 (EPC ) 组成。 其中, E-UTRAN由增强型基站(eNB )组成, 也可以称为 eNB; UE 也可以称为终端; EPC 包括移动管理实体 (MME ) 、 分组数据网网关 ( P-GW ) 、 和业务网关 (S-GW ) 。
LTE系统中, 为节省 UE的电池 /功率消耗, eNB可能通过无线资源控 制协议( RRC )为 UE配置 DRX功能, 以控制 UE监听物理下行控制信道 控制连接状态下, 如果配置了 DRX, UE被允许不连续地监听 PDCCH; 否 则 UE连续监听 PDCCH。 RRC配置 DRX操作所需定时器和相关参数, 包 括: 持续时间定时器; DRX非活动时间定时器; DRX重传定时器, 除接收 广播控制信道专用的下行混合自动重传请求 (HARQ ) 进程外, 每个下行 HARQ进程配置 1个该定时器; 长 DRX循环; DRX起始偏移值。 可选的, 还有 DRX短循环定时器和短 DRX循环。 每个下行 HARQ进程, 除接收广 播控制信道专用的下行 HARQ进程外,还配置有一个 HARQ环回时间定时 哭口
为描述 UE的 DRX行为, 引入了 PDCCH子帧的概念。 对于频分双工 ( FDD, Frequency Divided Duplex )模式工作的 UE, PDCCH子帧可代表 任意子帧; 对于时分双工模式(TDD , Time Divided Duplex ) 工作的 UE, PDCCH子帧仅指下行子帧和包含 DwPTS的特殊子帧。
活动时间: 指 UE在 PDCCH子帧监听 PDCCH的时间。
媒体接入控制竟争解决定时器指: UE在发送了随机接入过程的消息 3
( Msg3 )后, UE应该监听 PDCCH的连续 PDCCH子帧个数。
DRX循环指: 持续时间伴随一段可能的非活动时间的周期性重复。 DRX非活动定时器, 定义了 UE在成功解码了 PDCCH指示有该 UE 的初始上行(Uplink )或下行(Downlink )用户数据传输后连续的 PDCCH 子帧个数。
DRX重传定时器,定义了 UE—开始期待下行重传时最大连续 PDCCH 子帧个数。
DRX短循环定时器, 定义了 UE遵循短 DRX循环的连续子帧个数。 HARQ环回时间定时器, 定义了 UE期待下行 HARQ重传之前的最小 子帧数。
持续时间定时器, 定义了 DRX循环开始时连续的 PDCCH子帧个数。 图 1示出了现有 LTE系统 DRX的基本工作原理: 当配置了 DRX循环 时, UE的活动时间包括持续时间定时器、 或 DRX非活动定时器、 或 DRX 重传定时器、 或媒体接入控制竟争解决定时器运行时的时间; 或在物理上 行控制信道 ( PUCCH )上发送的调度请求(SR, Scheduling Request )被挂 起( Pending )的时间, 即: UE发送 SR等待上行授权 ( UL Grant )的时间; 或对应的 HARQ緩冲区有数据,为被挂起的 HARQ重传分配上行授权可能 发生的时间;或 UE成功接收针对显式发送的随机接入前导的随机接入响应 消息后, 尚未接收到 PDCCH指示有针对 UE 的小区无线网络临时标识 ( C-RNTI ) 的新传输等。 配置了 DRX时, UE在每个子帧执行如下操作:
如果使用短 DRX循环且满足 [(SFN * 10) + subframe number] modulo (shortDRX-Cycle) = (drxStartOffset) modulo (shortDRX-Cycle);或者如果使用 长 DRX循环且满足 [(SFN * 10) + subframe number] modulo (longDRX-Cycle) = drxStartOffset, 则在相应的子帧启动持续时间定时器。 对于 TDD模式, 持续时间定时器可以在上行子帧启动。 其中, SFN为记录子帧的系统帧数; subframe number为子帧数; shortDRX-Cycle为短 DRX循环; drxStartOffset 为 DRX起始偏移; longDRX-Cycle为长 DRX循环。
如果在该子帧超时且相应 HARQ进程软緩冲区中的数据没有被成功解 码, 则为对应的 HARQ进程启动 DRX重传定时器。
如果接收到 DRX命令媒体接入控制元(DRX command MAC CE ) , 则停止持续时间定时器; 停止 DRX非活动定时器。
如果在该子帧 DRX非活动定时器超时或者接收到 DRX command MAC CE: 如果配置了短 DRX循环, 则启动或重新启动 DRX短循环定时器, 使 用短 DRX循环; 否则使用长 DRX循环。
如果 DRX短循环定时器在该子帧超时, 则使用长 DRX循环。
在期间, 对于 PDCCH子帧, 对于半双工 FDD UE操作的子帧和与测 量间隙有重叠的子帧除外, UE需要执行以下操作:
监听 PDCCH。
如果 PDCCH指示下行发送或者在该子帧有预配置的下行分配,则为相 应的 HARQ进程启动 HARQ环回时间定时器; 为相应的 HARQ进程停止 DRX重传定时器。
如果 PDCCH指示下行或上行新的传输, 则启动或重新启动 DRX非活 动定时器。
不管 UE是否在监听 PDCCH, 当需要接收或者发送 HARQ反馈时, UE接收或者发送 HARQ反馈。
为了满足日益增长的大带宽高速移动接入的需求, 第三代伙伴组织计 划( 3GPP, Third Generation Partnership Projects )推出高级长期演进( LTE- A, Long-Term Evolution advanced )标准。 LTE- A在 LTE基础上釆用一系列新 技术对频域、 空域进行扩充, 以达到提高频谱利用率、 增加系统容量等目 的。 其中载波聚合技术可以聚合两个或多个分量载波以支持更宽的频带, 例如, 到达 100MHz和频语聚合。 UE可以同时在 1个或多个分量载波上接 收 /发送数据, 可以配置在下行 /上行聚集不同个数具有不同带宽的分量载 波。 每个分量载波对应一个 HARQ实体和传输信道。 在每个下行分量载波 上分别有一个单独的 PDCCH指示本分量载波上的资源分配或其它分量载 波上的资源分配,分为下行资源分配或上行授权的情况, PDCCH上有 0~3bit 指示分量载波标识信息。 对于扩展分量载波, 也可能没有 PDCCH, 其资源 分配而依赖于其它有 PDCCH的分量载波进行指示。在 LTE-A载波聚合中, 可能存在一个分量载波作为 UE的服务小区, 提供同步、 接入、 系统信息、 寻呼等功能; 或者多个分量载波均作为 UE的服务小区, 提供上述功能, 其 中 1 个服务小区可以设置为主服务小区, 作为测量参考、 切换、 随机接入 时的首选或者主小区。 在多个分量载波中, 可能配置后向兼容分量载波、 非后向兼容分量载波或者扩展载波。 其中后向兼容分量载波可以提供 LTE 系统和 LTE-A系统的 UE接入, 提供系统消息、 同步信道、 随机接入资源、 物理下行控制信道 PDCCH等。 非后向兼容分量载波可以提供 LTE-A系统 的 UE接入, 提供系统消息、 同步信道、 随机接入资源等, 可能配置或不配 置物理下行控制信道 PDCCH而通过其它分量载波的 PDCCH进行下行资源 分配或者上行授权, 上述两种分量载波可以独立存在。 扩展分量载波一般 作为资源而存在, 可能提供一些增强或扩展功能, 釆用不同的控制信令格 式, 可能提供或者不提供系统信息, 可能配置或者不配置物理下行控制信 道。
在 LTE-A系统载波聚合的 DRX方案中, 目前有三种基本的方案: 1 ) 分量载波一致的 DRX:所有分量载波使用一套 DRX配置,遵循相同的 DRX 行为。 2 )分量载波独立的 DRX: 各分量载波分别配置 DRX, 其 DRX行为 相互独立。 3 )基于主分量载波的 DRX: 在主分量载波上配置 DRX, 其它 非主载波的 DRX配置和行为部分或全部从属于主分量载波。 以上三种方案 中, 对于基于主载波的 DRX方案以及其它两种 DRX方案目前还只处于构 想阶段, 尚未明确完善的具体解决方案。 发明内容
有鉴于此, 本发明的主要目的在于提供一种 DRX配置方法及系统, 对 处于构想阶段的基于主载波的 DRX方案进行了完善及具体实现。
为达到上述目的, 本发明的技术方案是这样实现的:
一种不连续接收方法, 该方法包括: 为多个分量载波配置不连续接收 ( DRX ), 将一个或多个分量载波作为主分量载波; 由所述主分量载波决定 相关的其它非主分量载波的 DRX。
其中, 所述主分量载波包括 DRX状态, 所述 DRX状态包括活动状态 和非活动状态;
所述非主分量载波包括 DRX状态和休眠状态; 其中, 所述 DRX状态 包括活动状态和非活动状态。
其中, 主分量载波的所述 DRX状态配置为支持长 DRX循环; 可选的, 配置支持或者不支持短 DRX循环; 可选的, 配置非主分量载波为: 支持或 不支持长 DRX循环, 当配置为不支持长 DRX循环时, 根据所述主分量载 波的控制信令决定其 DRX状态为活动状态或非活动状态; 其中,
当主分量载波和非主分量载波的所述 DRX状态配置为支持短 DRX循 其中, 所述休眠状态为: 分量载波的关闭状态或去激活状态; 打开或 激活后能由休眠状态进入 DRX状态; 进入所述 DRX状态时, 处于活动状 态或者非活动状态; 其中,
休眠状态的分量载波不能被调度; 休眠状态的分量载波不用于数据收 发; 即不监听 PDCCH、 不接收 PDSCH。
其中, 该方法还包括: 配置主分量载波与小区的关系, 所述配置具体 包括: 所述主分量载波和无线资源控制协议(RRC )连接状态下的服务小 区或者主服务小区相关联。
其中, 该方法还包括: 配置主分量载波与用户设备(UE ) 的关系, 所 述配置具体包括: 所述主分量载波与当前 UE相对应; 对应于当前 UE的主 分量载波相对于其他 UE, 配置为主分量载波、 或者非主分量载波。
其中, 该方法还包括: 配置主分量载波与信道的关系, 所述配置具体 包括: 主分量载波作为后向兼容分量载波、 或者非后向兼容分量载波, 需 配置物理下行控制信道(PDCCH );
所述非主分量载波与信道的配置关系具体包括: 非主分量载波作为后 向兼容分量载波、 或者非后向兼容分量载波或者扩展分量载波, 配置 PDCCH或不配置 PDCCH。
其中, 当前非主分量载波不配置 PDCCH时, 进一步通过主分量载波、 或者其他配置有 PDCCH的非主分量载波的 PDCCH,对当前不配置 PDCCH 的非主分量载波的下行资源分配、 或者上行授权进行指示。
其中, 由所述主分量载波控制所述非主分量载波的 DRX具体包括: 主 分量载波通过控制信令或者预设条件, 控制非主分量载波的 DRX。
其中, 所述主分量载波通过把来自于增强型基站 ( eNB )的控制信令发 送给非主分量载波, 实现对非主分量载波 DRX的控制; 或者,
所述非主分量载波根据主分量载波的 DRX配置或 DRX行为, 决定当 前非主分量载波的 DRX配置或 DRX行为。
其中,所述控制信令具体包括:媒体接入控制元( MAC CE )或者 PDCCH 信令或者 RRC信令;所述非主分量载波从所述主分量载波接收 eNB控制信 令的方式进一步包括:
通过主分量载波上的 PDCCH、 或者当前非主分量载波所配置的 PDCCH, 或者其它非主分量载波所配置的 PDCCH接收; 或者,
通过主分量载波接收到的 MAC CE、 或者通过当前非主分量载波所接 收到的 MAC CE接收。
其中, 所述控制信令具体包括: MAC CE或者 PDCCH信令或者 RRC 信令; 在短 DRX循环和长 DRX循环之间相互迁移的状态迁移场景下, 该方法进一步包括: 由所述 eNB在所述主分量载波发送的 MAC CE触 发所述状态迁移, 具体包括: 主分量载波通过 eNB发送的 MAC CE, 通知 当前非主分量载波由短 DRX循环迁移到长 DRX循环; 或者, 主分量载波 通过 eNB发送的 MAC CE, 通知当前非主分量载波由长 DRX循环迁移到 短 DRX循环; 或者, 非主分量载波从长 DRX循环迁移到短 DRX循环, 根 据接收到主分量载波上 PDCCH指示的下行分配、或上行授权为本分量载波 的数据接收或发送时, 启动 DRX非活动时间定时器, 当 DRX非活动时间 定时器超时后进入短 DRX循环;
或者, 该方法进一步包括: 由所述 eNB 在所述非主分量载波发送的 MAC CE触发所述状态迁移,具体包括: eNB在当前非主分量载波发送 MAC CE,通知当前非主分量载波由短 DRX循环迁移到长 DRX循环;或者, eNB 在当前非主分量载波发送 MAC CE,通知当前非主分量载波由长 DRX循环 迁移到短 DRX循环。
其中, 所述 eNB通知所述当前非主分量载波触发状态迁移,具体包括: 当前非主分量载波根据主分量载波、 或者当前非主分量载波上发送的 MAC CE实现短 DRX循环和长 DRX循环之间的相互迁移;
或者, 当前非主分量载波根据预设条件进行短 DRX循环和长 DRX循 环之间的相互迁移; 其中, 预设条件具体包括: 业务的活动情况、 或者主 分量载波上的 DRX短循环定时器超时。
其中, 所述控制信令具体包括: MAC CE或者 PDCCH信令或者 RRC 信令; 在 DRX状态迁移到休眠状态的状态迁移场景下,
该方法进一步包括: 当前非主分量载波根据主分量载波、 或者当前非 主分量载波上发送的 MAC CE从 DRX状态迁移到休眠状态; 或者, 根据 主分量载波、 或者当前非主分量载波上发送的 PDCCH信令从 DRX状态迁 移到休眠状态; 或者根据 RRC去激活信令从 DRX状态迁移到休眠状态; 或者, 当前非主分量载波根据预设条件从 DRX状态迁移到休眠状态; 其中, 预设条件具体包括: 业务的活动情况、 或者主分量载波上的 DRX短 循环定时器超时。
其中, 所述控制信令具体包括: MAC CE或者 PDCCH信令或者 RRC 信令; 在休眠状态迁移到 DRX状态的状态迁移场景下,
该方法进一步包括: 当前非主分量载波根据主分量载波上发送的 PDCCH信令从休眠状态迁移到 DRX状态。
其中, 当所述主分量载波处于短 DRX循环时, 所述非主分量载波处于 短 DRX循环或者处于长 DRX循环或者处于休眠状态;
当所述主分量载波处于长 DRX循环时,所述非主分量载波处于长 DRX 循环或者处于休眠状态。
其中, 不同用途的 MAC CE分别使用不同的逻辑信道标识指示; 其中,
MAC CE的状态包括: 进入长 DRX循环、 进入短 DRX循环、 或进入 休眠状态。
其中, 该方法进一步配置所述非主分量载波的定时器; 所述配置具体 包括:
非主分量载波进一步配置独立的 DRX非活动时间定时器;
或者, 非主分量载波进一步配置独立的 DRX非活动时间定时器、 和持 续时间定时器;
或者, 非主分量载波进一步配置独立的 DRX非活动时间定时器、 或持 续时间定时器;
或者, 非主分量载波进一步配置 DRX短循环定时器, 以及根据 DRX 短循环定时器控制 DRX循环之间的迁移场景;
或者, 非主分量载波进一步不配置 DRX短循环定时器, 但仍然能够支 持短 DRX循环和长 DRX循环及其相互迁移;
或者, 非主分量载波进一步未配置独立的 DRX非活动时间定时器; 或者, 非主分量载波进一步未配置独立的持续时间定时器。
其中, 所述非主分量载波配置所述独立的 DRX非活动时间定时器的情 况下, 其它部分或全部 DRX配置遵循主分量载波的 DRX配置;
所述非主分量载波配置所述独立的 DRX非活动时间定时器、和持续时 间定时器的情况下, 其它部分或全部 DRX配置遵循主分量载波的 DRX配 置;
所述非主分量载波配置所述独立的 DRX非活动时间定时器、或持续时 间定时器的情况下, DRX非活动时间定时器、 或持续时间定时器的值, 小 于主分量载波相应定时器的值、 或者等于主分量载波相应定时器的值、 或 者大于主分量载波相应定时器的值;
所述非主分量载波未配置独立的 DRX非活动时间定时器的情况下, 当 主分量载波的 DRX非活动时间定时器启动或者重启动时, 非主分量载波相 应地延长其活动状态的时间和主分量载波一致;
所述非主分量载波未配置独立的持续时间定时器的情况下, 非主分量 载波根据主分量载波的 PDCCH信令或者持续时间定时器启动进入 DRX活 动状态, 当主分量载波的 DRX非活动定时器超时时或者持续时间定时器超 时时自动进入 DRX非活动状态或者休眠状态。
其中, 所述主分量载波和各非主分量载波配置的 DRX非活动时间定时 器, 分别根据本分量载波的调度情况独立启动或者重启动。
其中, 各个非主分量载波的 DRX配置保持一致或相互独立; 当各个非主分量载波配置持续时间定时器时, 所述持续时间定时器的 启动所位于的子帧, 均与主分量载波的持续时间定时器启动所位于的子帧 对齐;
当非主分量载波的 DRX 配置包括重传定时器和混合自动重传请求 ( HARQ ) 环回时间定时器时, 重传定时器和 HARQ环回时间定时器为每 个下行 HARQ进程分别配置; 重传定时器和 HARQ环回时间定时器的值, 与主分量载波相对应的定时器的值一致或者不同。
其中, 主分量载波的 DRX行为进一步需遵循 LTE系统中 DRX行为和 原则、或者在与 LTE系统的 DRX行为和原则保持兼容的前提下, 另外遵循 其它的扩展功能。
其中,非主分量载波的 DRX行为进一步部分或全部遵循 LTE系统中的 DRX行为和原则, 并接收主分量载波的控制信令, 根据控制信令执行相应 的 DRX行为;
或者, 非主分量载波根据主分量载波的 DRX 配置和行为执行一致的 DRX行为;
或者, 非主分量载波根据主分量载波的 DRX配置和行为根据预设条件 执行相应的 DRX行为。
其中, 该方法进一步包括: UE与 eNB之间交互调度请求(SR )及响 应 SR的过程, 具体包括: UE 向 eNB 发送 SR 时, 可以在任意配置有专用物理上行控制信道 ( PUCCH ) 资源的分量载波上发送、 或者在主分量载波上发送;
所述 UE发送所述 SR后, 主分量载波进一步保持在活动状态, 至少直 至接收到上行授权或者 SR发送到达最大次数; 或者, 所有分量载波进一步 保持在活动状态, 至少直至接收到上行授权或者 SR发送到达最大次数; 所述 eNB响应 UE发送的所述 SR时,进一步限制在主分量载波上发送 上行授权; 或者, 在任意活动状态的分量载波上发送上行授权。
一种不连续接收配置系统, 该系统包括: 选择及配置单元、 和控制单 元; 其中,
选择及配置单元, 用于为多个分量载波配置 DRX, 选择一个或多个分 量载波作为主分量载波;
控制单元, 用于由所述主分量载波控制相关的其它非主分量载波的 DRX。
其中, 该系统还包括: 状态控制单元, 用于控制所述主分量载波所处 的状态, 具体包括: DRX状态; 其中, DRX状态包括活动状态和非活动状 态;
当控制所述非主分量载波所处的状态时, 具体包括: DRX状态和休眠 状态; 其中, DRX状态包括活动状态和非活动状态。
其中, 该系统还包括: 主分量载波与小区关系的配置单元、 和主分量 载波与 UE关系的配置单元; 其中,
主分量载波与小区关系的配置单元, 用于配置主分量载波和 RRC连接 状态下的服务小区或者主服务小区相关联;
主分量载波与 UE 关系的配置单元, 用于配置所述主分量载波与当前 UE相对应; 对应于当前 UE的主分量载波相对于其他 UE, 配置为主分量 载波、 或者非主分量载波。 其中, 该系统还包括: 主分量载波与信道关系的配置单元、 和非主分 量载波与信道关系的配置单元; 其中,
主分量载波与信道关系的配置单元, 用于主分量载波作为后向兼容分 量载波、 或者非后向兼容分量载波时, 需配置 PDCCH;
非主分量载波与信道关系的配置单元, 用于非主分量载波作为后向兼 容分量载波、 或者非后向兼容分量载波或者扩展分量载波时, 配置 PDCCH 或不配置 PDCCH。
本发明为多个分量载波配置 DRX, 选择一个或多个分量载波作为主分 量载波, 由选择的主分量载波控制相关的其它非主分量载波的 DRX。
釆用本发明, 明确了基于主载波的 DRX方案, 对处于构想阶段的基于 主载波的 DRX配置方案进行了完善及具体实现。 附图说明
图 1为现有 LTE系统 DRX的基本工作原理示意图;
图 2为本发明方法的实现流程示意图;
图 3为 LTE-A载波聚合系统中主分量载波的 DRX状态示意图; 图 4为 LTE-A载波聚合系统中非主分量载波的 DRX状态及其迁移示 意图;
图 5为 LTE-A载波聚合系统中主分量载波和非主分量载波的 DRX配 置和 DRX行为场景的示意图。 具体实施方式
本发明的基本思想是: 为多个分量载波配置 DRX, 将一个或多个分量 载波作为主分量载波, 由选择的主分量载波控制相关的其它非主分量载波 的 DRX。
下面结合附图对技术方案的实施作进一步的详细描述。 如图 2所示, 一种 DRX方法, 该方法包括以下步骤:
步骤 101、 为多个分量载波配置 DRX, 选择一个或多个分量载波作为 主分量载波。
这里,为多个分量载波配置 DRX指:为多个分量载波中的主分量载波、 非主分量载波分别配置 DRX。
步骤 102、 由主分量载波决定相关的其它非主分量载波的 DRX。
进一步地, 针对主分量载波的状态而言, 主分量载波包括 DRX状态, 其中 DRX状态包括活动状态、 和非活动状态。 针对非主分量载波的状态而 言, 非主分量载波包括 DRX状态、 和休眠状态; 其中, DRX状态也包括 活动状态、 和非活动状态。 休眠状态包括去激活状态。
进一步地,针对 DRX状态需支持的循环类型而言,主分量载波的 DRX 状态可支持长 DRX循环。 可选的, 主分量载波和非主分量载波的 DRX状 态还可以支持或者不支持短 DRX循环。 对于非主分量载波, 可选的, 也可 配置为支持或不支持长 DRX循环, 而仅根据主分量载波的控制信令决定其 DRX状态为活动状态或非活动状态。 其中, 当主分量载波和非主分量载波 的 DRX状态支持短 DRX循环时, 支持长 DRX循环与短 DRX循环之间的 相互迁移操作。
进一步地, 针对以上非主分量载波的休眠状态而言, 非主分量载波的 休眠状态指: 分量载波的关闭状态或去激活状态。 打开或激活后能由休眠 状态进入 DRX状态。 进入所述 DRX状态时, 可处于活动状态或者非活动 状态。 休眠状态的分量载波不能被调度; 休眠状态的分量载波不用于数据 收发。
进一步地,针对主分量载波与小区的配置关系而言 ,主分量载波和 RRC 连接状态下的服务小区或者主服务小区相关联。
进一步地, 针对主分量载波与 UE的配置关系而言, 主分量载波为 UE 特定的, 也就是说, 对应于某个 UE的主分量载波, 对于另外的其他 UE而 言, 可以为主分量载波, 也可以为非主分量载波。
进一步地, 针对主分量载波与信道的配置关系而言, 主分量载波为后 向兼容分量载波或者非后向兼容分量载波, 需配置有 PDCCH。
进一步地, 针对非主分量载波与信道的配置关系而言, 非主分量载波 为后向兼容分量载波或者非后向兼容分量载波或者扩展分量载波, 可以配 置有 PDCCH, 也可以不配置 PDCCH。
其中, 针对不配置 PDCCH的非主分量载波而言, 对于不配置 PDCCH 的非主分量载波, 其下行资源分配或者上行授权通过主分量载波或者其他 配置有 PDCCH的非主分量载波, 釆用 PDCCH进行指示。
进一步地, 针对主分量载波控制非主分量载波的 DRX而言, 主分量载 波通过控制信令或者预设条件, 控制非主分量载波的 DRX; 其中, 控制信 令为媒体接入控制元( MAC CE )或者 PDCCH信令或者 RRC信令。
针对釆用控制信令或预设条件实现对非主分量载波 DRX的控制而言, 主分量载波, 通过控制信令控制非主分量载波的 DRX, 进一步是通过把来 自 eNB的控制信令发送给非主分量载波实现的; 或者, 非主分量载波根据 主分量载波的 DRX配置或 DRX行为决定本分量载波的 DRX行为。
控制信令可以为 MAC CE或者 PDCCH信令或者 RRC信令; 非主分量 载波进一步从主分量载波接收 eNB控制信令的方式为: 通过主分量载波上 的 PDCCH、 或者本分量载波所配置的 PDCCH、 或者其它非主分量载波所 配置的 PDCCH; 或者通过主分量载波接收到的 MAC CE、 或者通过本分量 载波所接收到的 MAC CE。
针对 eNB在主分量载波发送的 MAC CE所触发的状态迁移而言,且状 态迁移为短 DRX循环和长 DRX循环之间的相互迁移的场景, 主分量载波 进一步通过 eNB发送的一种 MAC CE, 通知非主分量载波由短 DRX循环 迁移到长 DRX循环; 主分量载波进一步通过 eNB发送的一种 MAC CE, 通知非主分量载波由长 DRX循环迁移到短 DRX循环。
针对 eNB在非主分量载波发送的 MAC CE所触发的状态迁移而言,且 状态迁移为短 DRX循环和长 DRX循环之间的相互迁移的场景, eNB进一 步在非主分量载波发送一种 MAC CE,通知本非主分量载波由短 DRX循环 迁移到长 DRX循环; eNB进一步在非主分量载波发送一种 MAC CE, 通知 本非主分量载波由长 DRX循环迁移到短 DRX循环。 或者, 非主分量载波 从长 DRX循环迁移到短 DRX循环也可以根据接收到主分量载波上 PDCCH 指示的下行分配或上行授权为本分量载波的数据接收或发送时, 启动 DRX 非活动时间定时器, 当 DRX非活动时间定时器超时后进入短 DRX循环。
由以上 eNB在主分量载波发送的 MAC CE、或者 eNB在非主分量载波 发送的 MAC CE 两种不同方式通知触发状态迁移, 非主分量载波实现短 DRX循环和长 DRX循环之间的相互迁移过程进一步包括: 根据主分量载 波、 或者本非主分量载波上发送的 MAC CE进行短 DRX循环和长 DRX循 环之间的相互迁移; 或者非主分量载波根据预设条件进行短 DRX循环和长 DRX循环之间的相互迁移。 其中, 预设条件为业务的活动情况, 如在该分 个数的持续时间定时器超时且 UE在此期间没有接收到下行资源分配或上 行授权可以作为触发条件; 或者, 预设条件为主分量载波上的 DRX短循环 定时器超时。
状态迁移为 DRX状态迁移到休眠状态的迁移场景, 非主分量载波进一 步根据主分量载波或者本非主分量载波上发送的一种 MAC CE、 或者根据 主分量载波或者本非主分量载波上发送的一种 PDCCH信令从 DRX状态迁 移到休眠状态; 或者根据 RRC去激活信令从 DRX状态迁移到休眠状态; 或者根据预设条件从 DRX状态迁移到休眠状态。 其中, 预设条件为业务的 或接收,即连续预设个数的持续时间定时器超时且 UE在此期间没有接收到 下行资源分配或上行授权可以作为触发条件; 或者, 预设条件为主分量载 波上的 DRX短循环定时器超时。 需要指出的是: 从 DRX状态迁移到休眠 非主分量载波根据主分量载波上发送的一种 PDCCH信令从休眠状态 迁移到 DRX状态。
所述非主分量载波从休眠状态迁移到 DRX状态时, 可能处于 DRX状 态的活动状态或非活动状态, 由持续时间定时器和 DRX起始偏移值共同决 定。
主分量载波处于短 DRX循环时,非主分量载波进一步可以处于短 DRX 循环或者处于长 DRX循环或者处于休眠状态。
主分量载波处于长 DRX循环时,非主分量载波进一步可以处于长 DRX 循环或者处于休眠状态。
针对 MAC CE而言, 不同用途的 MAC CE分别使用不同的逻辑信道标 识指示。 其中, MAC CE包括: 进入长 DRX循环、 进入短 DRX循环、 进 入休眠状态。
针对主分量载波的 DRX配置而言, 考虑到 LTE-A系统与 LTE系统的 兼容性, 主分量载波的 DRX配置需包括但不限于 LTE 系统中目前的所有 DRX配置。 其中包括: RRC配置主分量载波 DRX操作所需定时器和相关 参数, 包括但不限于: 持续时间定时器; DRX非活动时间定时器; DRX重 传定时器;除接收广播控制信道专用的下行 HARQ进程外,每个下行 HARQ 进程配置 1个该定时器; 长 DRX循环; DRX起始偏移值。 可选的, 还有 DRX短循环定时器和短 DRX循环。 每个下行 HARQ进程, 除接收广播控 制信道专用的下行 HARQ进程外, 还配置有一个 HARQ环回时间定时器。 针对非主分量载波的 DRX配置而言,同样需考虑到 LTE-A系统与 LTE 系统的兼容性,非主分量载波的 DRX配置可以包括但不限于 LTE系统中目 前的所有 DRX配置。 其中包括: RRC配置主分量载波 DRX操作所需定时 器和相关参数, 包括但不限于: 持续时间定时器; DRX非活动时间定时器; DRX重传定时器, 除接收广播控制信道专用的下行 HARQ进程外, 每个下 行 HARQ进程配置 1个该定时器; 长 DRX循环; DRX起始偏移值。 可选 的, 还有 DRX短循环定时器和短 DRX循环。 每个下行 HARQ进程, 除接 收广播控制信道专用的下行 HARQ进程外,还配置有一个 HARQ环回时间 定时器。
针对非主分量载波的 DRX配置而言,同样需考虑到 LTE-A系统与 LTE 系统的兼容性, 区别于以上涉及到的——所有的 DRX配置, 非主分量载波 的 DRX配置还可以包括但不限于 LTE系统中的部分 DRX配置。 其中包括 但不限于下列一种或多种:持续时间定时器; DRX非活动时间定时器; DRX 重传定时器, 除接收广播控制信道专用的下行混合 HARQ进程外, 每个下 行 HARQ进程配置 1个该定时器; 长 DRX循环; DRX起始偏移值; 可选 的还有 DRX短循环定时器和短 DRX循环。 每个下行 HARQ进程, 除接收 广播控制信道专用的下行 HARQ进程外,还配置有一个 HARQ环回时间定 时器。
针对非主分量载波与定时器的配置关系而言, 非主分量载波进一步仅 配置独立的 DRX非活动时间定时器。 适用于仅配置独立的 DRX非活动时 间定时器的场景。
其中,在非主分量载波仅配置独立的 DRX非活动时间定时器的场景下, 其它部分或全部 DRX配置遵循主分量载波的 DRX配置。
针对非主分量载波与定时器的配置关系而言, 非主分量载波仅配置独 立的 DRX 非活动时间定时器和持续时间定时器。 适用于不仅配置独立的 D RX非活动时间定时器, 还配置持续时间定时器的场景。
其中, 在非主分量载波不仅配置独立的 DRX非活动时间定时器, 还配 置持续时间定时器的场景下,其它部分或全部 DRX配置遵循主分量载波的 DRX配置;
针对非主分量载波与定时器的配置关系而言, 在非主分量载波配置独 立的 DRX非活动时间定时器、 或持续时间定时器的场景下, DRX非活动 时间定时器、 或持续时间定时器的值, 小于主分量载波相应定时器的值、 或者等于主分量载波相应定时器的值、 或者大于主分量载波相应定时器的 值。
针对非主分量载波与定时器的配置关系而言, 非主分量载波也可以配 置 DRX短循环定时器以及根据该定时器控制 DRX循环之间的迁移场景。
其中,上述涉及到的主分量载波和各非主分量载波配置的 DRX非活动 时间定时器, 分别根据本分量载波的调度情况独立启动或者重启动。
其中, 非主分量载波进一步没有配置独立的 DRX非活动时间定时器, 当主分量载波的 DRX非活动时间定时器重启动时, 非主分量载波相应地延 长其活动状态的时间和主分量载波一致。
其中, 非主分量载波进一步没有配置独立的持续时间定时器, 非主分 量载波根据主分量载波的 PDCCH信令进入 DRX活动状态, 当主分量载波 的 DRX非活动定时器超时时自动进入 DRX非活动状态或者休眠状态。
针对非主分量载波的 DRX配置而言, 各个非主分量载波的 DRX配置 保持一致或相互独立。
进一步地, 各个非主分量载波如果配置了持续时间定时器, 则该定时 器的启动所位于的子帧均与主分量载波的持续时间定时器启动所位于的子 帧对齐。
进一步地, 非主分量载波不配置 DRX短循环定时器, 但能够仍然支持 短 DRX循环和长 DRX循环及其相互迁移。
非主分量载波的 DRX重传定时器和 HARQ环回时间定时器为每个下 行 HARQ进程分别配置; 相应定时器的值和主分量载波相应定时器的值一 致或者不同。
针对主分量载波的 DRX行为而言, 主分量载波的 DRX行为进一步需 遵循 LTE系统中 DRX行为和原则——参见背景技术中的描述;也可以在和 LTE系统的 DRX行为和原则保持兼容的前提下,另外遵循其它的扩展功能。
针对非主分量载波的 DRX行为而言, 非主分量载波的 DRX行为部分 或全部遵循 LTE系统中的 DRX行为和原则 ,并接收主分量载波的控制信令, 根据控制信令执行相应的 DRX行为; 或者根据主分量载波的 DRX配置和 行为执行一致的 DRX行为; 或者根据主分量载波的 DRX配置和行为根据 预设条件执行相应的 DRX行为, 如在主分量的 DRX短循环定时器超时进 入长 DRX循环时自动进入休眠状态。
针对 UE与 eNB之间交互 SR和 SR响应而言, UE向 eNB发送 SR时, 可以在任意配置有专用 PUCCH资源的分量载波上发送、或者仅在主分量载 波上发送。
针对 UE与 eNB之间交互 SR和 SR响应而言, eNB响应 SR时, 限制 仅在主分量载波上发送上行授权; UE发送 SR后, 主分量载波保持在活动 状态, 至少直至接收到上行授权或者 SR发送到达最大次数; 或者, eNB响 应 SR时, 可以在任意活动状态的分量载波上发送上行授权; UE发送 SR 后, 所有分量载波保持在活动状态, 至少直至接收到上行授权或者 SR发送 到达最大次数。
以下对本发明进行举例阐述。
图 3、 图 4示出了 LTE-A载波聚合系统中主分量载波和非主分量载波 的 DRX状态及其迁移示意图, 说明如下: 主分量载波的状态包括一个 DRX状态,其中包括活动状态和非活动状 态; 如果配置有支持短 DRX循环,则支持短 DRX循环和长 DRX循环及其 迁移。主分量载波的 DRX行为以及 DRX状态中和之间的状态迁移、短 DRX 循环和长 DRX循环的迁移等各种操作与 LTE系统的配置和原则保持一致。
非主分量载波的状态包括一个 DRX状态和一个休眠状态; 其中, 如果 DRX状态配置有支持短 DRX循环, 则支持短 DRX循环和长 DRX循环及 其迁移。 非主分量载波不配置, 根据主分量载波或者本分量载波上的 MAC CE或者 PDCCH信令控制其从短 DRX循环迁移到长 DRX循环或者迁移到 休眠状态; 根据主分量载波或者本分量载波上的 MAC CE或者 PDCCH信 令从长 DRX循环迁移到短 DRX循环; 根据主分量载波上的 PDCCH信令 从休眠状态迁移到 DRX状态; 非主分量载波也可以根据隐式规则, 也可以 称为预设条件如本分量载波上的业务数据调度情况决定短 DRX循环和长 DRX循环之间的迁移或从 DRX状态到休眠状态的迁移; 非主分量载波也 可以配置, 根据 LTE系统相同的原则控制短 DRX循环和长 DRX循环之间 的迁移; 非主分量载波在 DRX状态内也可以完全才艮据主分量载波的状态迁 移情况决定本分量载波的状态迁移, 以和主分量载波上的 DRX行为完全一 致的方式运行,但是其从 DRX状态和休眠状态之间的迁移需要遵循前述原 则, 在 LTE系统中没有类似方案。
图 5示出了 LTE-A载波聚合系统中主分量载波和非主分量载波的 DRX 配置和 DRX行为场景之一示意图, 说明如下:
主分量载波配置了 LTE系统中 DRX配置的全集, 遵循和 LTE系统一 致的 DRX行为; 并对非主分量载波的 DRX行为进行相应的控制。
非主分量 1 和非主分量载波 2 分别配置了独立的持续时间定时器和 DRX非活动时间定时器, 这两个定时器的值均小于主分量载波对应定时器 的值。 该两个非主分量载波的和 DRX 重传定时器分别为每个下行 HARQ 进程各配置 1 个, 定时器的值分别和主分量载波相应定时器的值一致。 该 两个非主分量载波均没有配置, 它们的 DRX循环迁移操作由主载波进行控 制或者根据隐式规则进行。
对于非主分量载波 1 ,在第 1个通过主分量载波的 PDCCH接收到下行 资源分配或者上行授权, 启动了其独立的 DRX 非活动时间定时器, 并在 DRX非活动时间定时器超时后自动使用短 DRX循环。 在下一个, 接收到 eNB通过主分量载波发送的进入长 DRX循环或者休眠状态的信令,可能为 相应的 MAC CE或 PDCCH信令, 进入长 DRX循环或者休眠状态。 进入长 DRX循环或者进入休眠状态使用不同的控制信令。
对于非主分量载波 2, 连续两个没有接收到调度信令, 没有业务数据的 收发行为, 于是该分量载波根据预设的规则自动进入长 DRX循环或者进入 从以上的描述中, 可以看出, 本发明提出了 LTE-A系统载波聚合中的 DRX方案, 该方法具有配置与操作简单、 与 LTE 系统的兼容性好、 DRX 省电性能优越等优点。
一种 DRX配置系统,该系统包括:选择及配置单元和控制单元。其中, 选择及配置单元, 用于为多个分量载波配置 DRX, 选择一个或多个分量载 波作为主分量载波。 控制单元, 用于由主分量载波控制相关的其它非主分 量载波的 DRX配置。
这里, 该系统还包括: 状态控制单元, 用于当控制主分量载波所处的 状态时, 具体包括: DRX状态; 其中, DRX状态包括活动状态和非活动状 态。 状态控制单元, 还用于当控制非主分量载波所处的状态时, 具体包括: DRX状态和休眠状态; 其中, DRX状态包括活动状态和非活动状态; 休眠 状态包括去激活状态。
这里, 该系统还包括: 主分量载波与小区关系的配置单元、 和主分量 载波与 UE关系的配置单元。 其中, 主分量载波与小区关系的配置单元, 用 于配置主分量载波和 RRC连接状态下的服务小区或者主服务小区相关联。 主分量载波与 UE关系的配置单元,用于配置主分量载波与当前 UE相对应; 对应于当前 UE的主分量载波相对于其他 UE, 配置为主分量载波、 或者非 主分量载波。
这里, 该系统还包括: 主分量载波与信道关系的配置单元、 和非主分 量载波与信道关系的配置单元。 其中, 主分量载波与信道关系的配置单元, 用于主分量载波作为后向兼容分量载波、 或者非后向兼容分量载波时, 需 配置 PDCCH。 非主分量载波与信道关系的配置单元, 用于非主分量载波作 为后向兼容分量载波、 或者非后向兼容分量载波或者扩展分量载波时, 配 置 PDCCH或不配置 PDCCH。
这里,以上涉及到的无线资源控制连接状态可以用 RRC— CONNECTED 表示; 持续时间定时器可以用 onDurationTimer表示; DRX非活动时间定时 器可以用 drx-InactivityTimer 表示; DRX 重传定时器可以用 drx-RetransmissionTimer表示; 长 DRX循环可以用 longDRX-Cycle表示; DRX 起始偏移可以用 drxStartOffset 表示; DRX 短循环定时器可以用 drxShortCycleTimer表示;短 DRX循环可以用 shortDRX-Cycle表示; HARQ 环回时间定时器可以用 HARQ RTT timer 表示; PDCCH 子帧可以用 PDCCH-subframe表示; 活动时间可以用 Active Time表示; 媒体接入控制 竟争解决定时器可以用 mac-ContentionResolutionTimer表示; DRX循环可 以用 DRX Cycle表示;持续时间可以用 On Duration表示;活动可以用 active 表示; 非活动可以用 inactive表示; 软緩冲区可以用 soft buffer表示; 测量 间隙可以用 Measurement gap表示; 下行分配可以用 DL assignment表示; 新的传输可以用 new transmission表示; 分量载波可以用 Component Carrier 表示;服务小区可以用 Serving cell表示;主服务小区可以用 Primary serving cell表示; 独立存在可以用 standalone表示; 主载波可以用 Anchor carrier 表示; 非主分量载波可以用 non anchor carrier表示; 休 Θ民可以用 Dormant 表示; HARQ反馈可以用 HARQ feedback表示。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种不连续接收方法, 其特征在于, 该方法包括: 为多个分量载波 配置不连续接收(DRX ), 将一个或多个分量载波作为主分量载波; 由所述 主分量载波决定其它非主分量载波的 DRX。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述主分量载波包括 DRX状态; 所述非主分量载波包括 DRX状态和休眠状态;
所述休眠状态为: 分量载波的关闭状态或去激活状态; 打开或激活后 能由休眠状态进入 DRX状态; 休眠状态的分量载波不能被调度; 休眠状态 的分量载波不用于数据收发。
3、 根据权利要求 1所述的方法, 其特征在于, 该方法还包括: 配置主 分量载波与小区的关系, 所述配置具体包括: 所述主分量载波和无线资源 控制协议(RRC )连接状态下的服务小区或者主服务小区相关联。
4、 根据权利要求 1所述的方法, 其特征在于, 由所述主分量载波决定 所述非主分量载波的 DRX具体包括: 主分量载波通过控制信令, 或者根据 预设条件, 决定非主分量载波的 DRX。
5、 根据权利要求 4所述的方法, 其特征在于, 所述非主分量载波根据 主分量载波的 DRX配置或 DRX行为,决定当前非主分量载波的 DRX配置 或 DRX行为。
6、 根据权利要求 5所述的方法, 其特征在于, 当前非主分量载波根据 预设条件从 DRX状态迁移到休眠状态; 其中, 预设条件具体包括: 业务的 活动情况。
7、 根据权利要求 4所述的方法, 其特征在于, 所述主分量载波通过把 来自于增强型基站 ( eNB )的控制信令发送给非主分量载波, 实现对非主分 量载波 DRX的控制。
8、 根据权利要求 4至 7任一项所述的方法, 其特征在于, 当所述主分 量载波处于短 DRX循环时, 所述非主分量载波处于短 DRX循环或者处于 长 DRX循环或者处于休眠状态; 当所述主分量载波处于长 DRX循环时, 所述非主分量载波处于长 DRX循环或者处于休眠状态。
9、 根据权利要求 1所述的方法, 其特征在于, 该方法进一步配置所述 非主分量载波的定时器; 所述配置具体包括: 非主分量载波进一步未配置 独立的 DRX非活动时间定时器; 或者, 非主分量载波进一步未配置独立的 持续时间定时器; 其中,
所述非主分量载波未配置独立的 DRX非活动时间定时器的情况下, 当 主分量载波的 DRX非活动时间定时器启动或者重启动时, 非主分量载波相 应地延长其活动状态的时间和主分量载波一致;
所述非主分量载波未配置独立的持续时间定时器的情况下, 非主分量 载波根据主分量载波的 PDCCH信令或者持续时间定时器启动进入 DRX活 动状态, 当主分量载波的 DRX非活动定时器超时时或者持续时间定时器超 时时自动进入 DRX非活动状态或者休眠状态。
10、 根据权利要求 1 所述的方法, 其特征在于, 各个非主分量载波的 DRX配置保持一致或相互独立; 当各个非主分量载波配置持续时间定时器 时, 所述持续时间定时器的启动所位于的子帧, 均与主分量载波的持续时 间定时器启动所位于的子帧对齐。
11、 根据权利要求 5所述的方法, 其特征在于, 主分量载波的 DRX行 为进一步需遵循 LTE系统中 DRX行为和原则, 非主分量载波的 DRX行为 进一步部分或全部遵循 LTE系统中的 DRX行为和原则,并接收主分量载波 的控制信令, 根据控制信令执行相应的 DRX行为; 或者, 非主分量载波根 据主分量载波的 DRX配置和行为执行一致的 DRX行为; 或者, 非主分量 载波根据主分量载波的 DRX配置和行为根据预设条件执行相应的 DRX行 为。
12、 根据权利要求 2所述的方法, 其特征在于, 主分量载波和非主分 量载波的所述 DRX状态包括活动状态和非活动状态。
13、 根据权利要求 12 所述的方法, 其特征在于, 主分量载波的所述 DRX状态配置为支持长 DRX循环; 可选的, 配置支持或者不支持短 DRX 循环; 可选的, 配置非主分量载波为: 支持或不支持长 DRX循环, 当配置 为不支持长 DRX循环时, 根据所述主分量载波的控制信令决定其 DRX状 态为活动状态或非活动状态; 其中,
当主分量载波和非主分量载波的所述 DRX状态配置为支持短 DRX循
14、 根据权利要求 1 所述的方法, 其特征在于, 该方法还包括: 配置 主分量载波与用户设备(UE ) 的关系, 所述配置具体包括: 所述主分量载 波与当前 UE相对应; 对应于当前 UE的主分量载波相对于其他 UE, 配置 为主分量载波、 或者非主分量载波。
15、 根据权利要求 1 所述的方法, 其特征在于, 该方法还包括: 配置 主分量载波与信道的关系, 所述配置具体包括: 主分量载波作为后向兼容 分量载波、或者非后向兼容分量载波,需配置物理下行控制信道(PDCCH ); 所述非主分量载波与信道的配置关系具体包括: 非主分量载波作为后 向兼容分量载波、 或者非后向兼容分量载波或者扩展分量载波, 配置 PDCCH或不配置 PDCCH。
16、 根据权利要求 15所述的方法, 其特征在于, 当前非主分量载波不 配置 PDCCH时, 进一步通过主分量载波、 或者其他配置有 PDCCH的非主 分量载波的 PDCCH, 对当前不配置 PDCCH的非主分量载波的下行资源分 配、 或者上行授权进行指示。
17、 根据权利要求 7所述的方法, 其特征在于, 所述控制信令具体包 括: 媒体接入控制元( MAC CE )或者 PDCCH信令或者 RRC信令; 所述 非主分量载波从所述主分量载波接收 eNB控制信令的方式进一步包括: 通过主分量载波上的 PDCCH、 或者当前非主分量载波所配置的
PDCCH、 或者其它非主分量载波所配置的 PDCCH接收; 或者,
通过主分量载波接收到的 MAC CE、 或者通过当前非主分量载波所接 收到的 MAC CE接收。
18、 根据权利要求 7所述的方法, 其特征在于, 所述控制信令具体包 括: MAC CE或者 PDCCH信令或者 RRC信令;在短 DRX循环和长 DRX 循环之间相互迁移的状态迁移场景下,
该方法进一步包括: 由所述 eNB在所述主分量载波发送的 MAC CE触 发所述状态迁移, 具体包括: 主分量载波通过 eNB发送的 MAC CE, 通知 当前非主分量载波由短 DRX循环迁移到长 DRX循环; 或者, 主分量载波 通过 eNB发送的 MAC CE, 通知当前非主分量载波由长 DRX循环迁移到 短 DRX循环; 或者, 非主分量载波从长 DRX循环迁移到短 DRX循环, 根 据接收到主分量载波上 PDCCH指示的下行分配、或上行授权为本分量载波 的数据接收或发送时, 启动 DRX非活动时间定时器, 当 DRX非活动时间 定时器超时后进入短 DRX循环;
或者, 该方法进一步包括: 由所述 eNB 在所述非主分量载波发送的 MAC CE触发所述状态迁移,具体包括: eNB在当前非主分量载波发送 MAC CE,通知当前非主分量载波由短 DRX循环迁移到长 DRX循环;或者, eNB 在当前非主分量载波发送 MAC CE,通知当前非主分量载波由长 DRX循环 迁移到短 DRX循环。
19、根据权利要求 18所述的方法, 其特征在于, 所述 eNB通知所述当 前非主分量载波触发状态迁移, 具体包括: 当前非主分量载波根据主分量 载波、或者当前非主分量载波上发送的 MAC CE实现短 DRX循环和长 DRX 循环之间的相互迁移; 或者, 当前非主分量载波根据预设条件进行短 DRX循环和长 DRX循 环之间的相互迁移; 其中, 预设条件具体包括: 业务的活动情况、 或者主 分量载波上的 DRX短循环定时器超时。
20、 根据权利要求 7所述的方法, 其特征在于, 所述控制信令具体包 括: MAC CE或者 PDCCH信令或者 RRC信令; 在 DRX状态迁移到休眠 状态的状态迁移场景下,
该方法进一步包括: 当前非主分量载波根据主分量载波、 或者当前非 主分量载波上发送的 MAC CE从 DRX状态迁移到休眠状态; 或者, 根据 主分量载波、 或者当前非主分量载波上发送的 PDCCH信令从 DRX状态迁 移到休眠状态; 或者根据 RRC去激活信令从 DRX状态迁移到休眠状态。
21、 根据权利要求 7所述的方法, 其特征在于, 所述控制信令具体包 括: MAC CE或者 PDCCH信令或者 RRC信令; 在休眠状态迁移到 DRX 状态的状态迁移场景下,
该方法进一步包括: 当前非主分量载波根据主分量载波上发送的 PDCCH信令从休眠状态迁移到 DRX状态。
22、 根据权利要求 17至 21任一项所述的方法, 其特征在于, 不同用 途的 MAC CE分别使用不同的逻辑信道标识指示; 其中,
MAC CE的状态包括: 进入长 DRX循环、 进入短 DRX循环、 或进入 休眠状态。
23、 根据权利要求 1 所述的方法, 其特征在于, 该方法进一步配置所 述非主分量载波的定时器; 所述配置具体包括:
非主分量载波进一步配置独立的 DRX非活动时间定时器;
或者, 非主分量载波进一步配置独立的 DRX非活动时间定时器、 和持 续时间定时器;
或者, 非主分量载波进一步配置独立的 DRX非活动时间定时器、 或持 续时间定时器;
或者, 非主分量载波进一步配置 DRX短循环定时器, 以及根据 DRX 短循环定时器控制 DRX循环之间的迁移场景;
或者, 非主分量载波进一步不配置 DRX短循环定时器, 但仍然能够支 持短 DRX循环和长 DRX循环及其相互迁移。
24、 根据权利要求 23所述的方法, 其特征在于, 所述非主分量载波配 置所述独立的 DRX非活动时间定时器的情况下, 其它部分或全部 DRX配 置遵循主分量载波的 DRX配置;
所述非主分量载波配置所述独立的 DRX非活动时间定时器、和持续时 间定时器的情况下, 其它部分或全部 DRX配置遵循主分量载波的 DRX配 置;
所述非主分量载波配置所述独立的 DRX非活动时间定时器、或持续时 间定时器的情况下, DRX非活动时间定时器、 或持续时间定时器的值, 小 于主分量载波相应定时器的值、 或者等于主分量载波相应定时器的值、 或 者大于主分量载波相应定时器的值。
25、 根据权利要求 24所述的方法, 其特征在于, 所述主分量载波和各 非主分量载波配置的 DRX非活动时间定时器,分别根据本分量载波的调度 情况独立启动或者重启动。
26、根据权利要求 1所述的方法,其特征在于, 当非主分量载波的 DRX 配置包括重传定时器和混合自动重传请求 ( HARQ )环回时间定时器时, 重 传定时器和 HARQ环回时间定时器为每个下行 HARQ进程分别配置;重传 定时器和 HARQ环回时间定时器的值, 与主分量载波相对应的定时器的值 一致或者不同。
27、 根据权利要求 7所述的方法, 其特征在于, 该方法进一步包括: UE与 eNB之间交互调度请求 ( SR )及响应 SR的过程, 具体包括: UE 向 eNB 发送 SR 时, 可以在任意配置有专用物理上行控制信道 ( PUCCH ) 资源的分量载波上发送、 或者在主分量载波上发送;
所述 UE发送所述 SR后, 主分量载波进一步保持在活动状态, 至少直 至接收到上行授权或者 SR发送到达最大次数; 或者, 所有分量载波进一步 保持在活动状态, 至少直至接收到上行授权或者 SR发送到达最大次数; 所述 eNB响应 UE发送的所述 SR时,进一步限制在主分量载波上发送 上行授权; 或者, 在任意活动状态的分量载波上发送上行授权。
28、 一种不连续接收配置系统, 其特征在于, 该系统包括: 配置单元、 和控制单元; 其中,
配置单元, 用于为多个分量载波配置 DRX, 将一个或多个分量载波作 为主分量载波;
控制单元, 用于由所述主分量载波决定相关的其它非主分量载波的 DRX。
29、 根据权利要求 28所述的系统, 其特征在于, 该系统还包括: 状态 控制单元, 用于控制所述主分量载波和所述非主分量载波所处的状态; 其中, 所述主分量载波所处的状态具体包括: DRX状态; 所述非主分 量载波所处的状态具体包括: DRX状态和休眠状态;
所述休眠状态为: 分量载波的关闭状态或去激活状态; 打开或激活后 能由休眠状态进入 DRX状态; 休眠状态的分量载波不能被调度; 休眠状态 的分量载波不用于数据收发。
30、 根据权利要求 28所述的系统, 其特征在于, 该系统还包括: 主分 量载波与小区关系的配置单元, 用于配置主分量载波和 RRC连接状态下的 服务小区或者主服务小区相关联。
31、 根据权利要求 28所述的系统, 其特征在于, 控制单元, 进一步用 于由所述主分量载波决定所述非主分量载波的 DRX时,主分量载波通过控 制信令或者预设条件, 决定非主分量载波的 DRX。
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