WO2009086770A1 - 状态同步的方法、装置及系统 - Google Patents

状态同步的方法、装置及系统 Download PDF

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Publication number
WO2009086770A1
WO2009086770A1 PCT/CN2008/073358 CN2008073358W WO2009086770A1 WO 2009086770 A1 WO2009086770 A1 WO 2009086770A1 CN 2008073358 W CN2008073358 W CN 2008073358W WO 2009086770 A1 WO2009086770 A1 WO 2009086770A1
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WIPO (PCT)
Prior art keywords
control channel
shared control
speed shared
message
channel command
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PCT/CN2008/073358
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English (en)
French (fr)
Inventor
Bitao Li
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009086770A1 publication Critical patent/WO2009086770A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/28Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present invention relates to wireless communication technologies, and more particularly to a method, apparatus and system for state synchronization. Background technique
  • the Wideband Code Division Multiple Access (WCDMA) system introduces continuous packet access (CPC) technology.
  • CPC technology can use uplink discontinuous transmission (UL-DTX) technology.
  • UL-DTX uplink discontinuous transmission
  • the control channel does not need to be continuously transmitted, but only needs to be transmitted discontinuously to maintain the communication link without interruption. , thereby reducing unnecessary uplink transmission power and uplink interference, reducing uplink noise, and increasing the number of uplink online users.
  • the CPC technology includes the following three technologies: 1) uplink discontinuous transmission (UL_DTX) technology; 2) downlink discontinuous reception (DL_DRX) technology; 3) high-speed shared control channel reduction transmission (HS-SCCH-less) Opration) technology.
  • the base station In the process of establishing CPC state synchronization between the user equipment (UE) and the base station (NodeB), when the value of the variable UE_DTX_DRX_Enable indicating that the user equipment supports discontinuous transmission or reception becomes TRUE on the base station side, the base station Entering the CPC state, processing data according to uplink discontinuous reception or processing data according to uplink discontinuous reception and downlink discontinuous transmission.
  • the NodeB After the NodeB enters the CPC state, after the Enable-Delay radio frame delay, the UE can also be considered to enter the CPC state.
  • the NodeB sends the uplink discontinuous transmission and/or downlink discontinuous reception deactivation to the UE through the HS-SCCH. Activated command.
  • the user equipment When the value of the UE-DTX-DRX-Enceive on the user equipment side is also TRUE, the user equipment also enters the CPC state, and the user equipment and the base station perform discontinuous transmission.
  • the inventors have found that the following problems may exist in the prior art.
  • the CPCB of the NodeB and the UE is synchronized, when the NodeB has entered the CPC state, The UE may still not enter the CPC state. If the UE receives the HS-SCCH command sent by the NodeB before entering the CPC state, it may return an acknowledgment (ACK) message to the Node B during the hybrid automatic repeat request (HARQ) process, so the NodeB will consider the HS- The SCCH command has taken effect, but in fact, on the UE side, the HS-SCCH command does not take effect, which ultimately leads to the system being uncontrollable.
  • ACK acknowledgment
  • HARQ hybrid automatic repeat request
  • Embodiments of the present invention provide a method, apparatus, and system for state synchronization.
  • the embodiment of the present invention provides a method for status synchronization, where the method includes: if the value indicating that the user equipment supports discontinuous transmission or reception, UE_DTX_DRX_Enable, is FALSE, the user equipment discards the received The high speed shares the control channel command, or returns a non-acknowledgement message to the base station according to the received high speed shared control channel command.
  • the embodiment of the present invention further provides a method for status synchronization, including: sending, by a base station, a high speed shared control channel command to a user equipment;
  • the base station If the acknowledgment message corresponding to the high speed shared control channel command is not received, the base station retransmits the high speed shared control channel command; when the number of times of retransmitting the high speed shared control channel command is greater than a predetermined value, stopping transmitting the high speed shared control channel command .
  • an embodiment of the present invention further provides a state synchronization system, where the system includes: a radio network controller, a user equipment, and a base station;
  • the radio network controller is configured to send a first configuration message to the user equipment, and send a second configuration message to the base station;
  • the user equipment is configured to change the value of the variable UE_DTX_DRX_Enable to TRUE according to the received first configuration message;
  • the base station is configured to send a high speed shared control channel command to the user equipment according to the received second configuration message;
  • the user equipment is in the variable UE_DTX_DRX_Enable value becomes TRUE, the root Returning an acknowledgement message to the base station according to the received high speed shared control channel command;
  • an embodiment of the present invention further provides a user equipment, where the user equipment includes: a receiving module, a synchronization module, and an output module;
  • the receiving module is configured to send the received first configuration message and a high speed shared control channel command to the synchronization module;
  • the synchronization module is configured to change a value of the variable UE_DTX_DRX_Enable to TRUE according to the first configuration message, and send an acknowledgement message to the output module according to the received high-speed shared control channel command;
  • the output module is configured to output the confirmation message.
  • an embodiment of the present invention further provides a base station, where the base station includes: a receiving module, an information processing module, an output module, and a timer;
  • the receiving module is configured to send the received second configuration message and the non-confirmation message to the information processing module;
  • the information processing module is configured to send a high speed shared control channel command to the output module according to the received second configuration message;
  • the output module is configured to output the high speed shared control channel command.
  • the UE-DTX-DRX-Enceive is FALSE
  • the UE may learn the UE by directly discarding the HS-SCCH command or returning a NACK message.
  • the CPC state effectively prevents the system from being uncontrollable.
  • FIG. 1 is a flow chart of a CPC state synchronization method in an embodiment of the present invention
  • FIG. 2 is a structural diagram of a system for implementing CPC state synchronization in another embodiment of the present invention.
  • the inventor has found that the RNC needs to send signaling or CPC messages to the NodeB and the UE in the process of implementing the CPC state synchronization between the NodeB and the UE, but cannot be guaranteed to be sent to the NodeB and the UE.
  • the signaling or CPC message can take effect at the same time. For example, if the RNC has sent a Radio Link Setu message to the NodeB before sending the RRC Connection Setu information to the UE, the UE-DTX-DRX-Enable on the NodeB side will change from FALSE to TRUE earlier than the UE side.
  • the NodeB will first enter the CPC state (ie, the value of the variable UL-DTX_Active is TRUE, or the variable UL-DTX-Active and the variable DL-DRX — The value of Active is TRUE.
  • the NodeB processes data according to uplink discontinuous reception or processes data according to uplink discontinuous reception and downlink discontinuous transmission.
  • Data transmission will still be performed in the normal uplink transmission and downlink reception. At this time, a part of the data sent by the UE will be discarded by the NodeB, thereby causing partial data loss.
  • the UE may return an acknowledgment (ACK) message to the Node B during the hybrid automatic repeat request (HARQ ) process process before entering the CPC state, so the NodeB will consider the HS-SCCH order to be valid, but actually in the UE.
  • ACK acknowledgment
  • HARQ hybrid automatic repeat request
  • the HS-SCCH command does not take effect, which ultimately leads to the system being uncontrollable.
  • FIG. 1 is a flowchart of a CPC state synchronization method according to an embodiment of the present invention. As shown in FIG. 1, the CPC state synchronization method in the embodiment of the present invention includes the following steps:
  • Step 101 When the UE side indicates that the value of the variable UE-DTX_DRX_Enable of the non-contiguous transmission or reception of the user equipment is FALSE, the UE discards the HS-SCCH command sent by the NodeB, or returns a non-acknowledgement (NACK) message.
  • NACK non-acknowledgement
  • variable UE_DTX_DRX_Enable on the NodeB side is TRUE, that is, the NodeB enters the CPC state
  • the UE side variable UE_DTX_DRX_Enable value is FALSE
  • the UE may return a NACK message to the NodeB, or directly discard the HS-SCCH command without returning any message.
  • Step 102 When the acknowledgment message is not received, the NodeB resends the HS-SCCH order to the UE.
  • the acknowledgment message is not received, indicating that the NodeB has not received the ACK message sent by the UE.
  • the NodeB may continue to resend the HS-SCCH command to the UE.
  • Step 103 When the number of retransmissions is greater than a predetermined value, the NodeB starts a timer, and stops sending an HS-SCCH command to the UE.
  • the embodiment selects the number of retransmissions.
  • the NodeB can set a counter and try to resend the HS-SCCH command a certain number of times. If the NodeB still does not receive the ACK message sent by the UE after a predetermined number of retransmissions (i.e., when the value of the counter reaches a predetermined value), the NodeB may start a timer and stop transmitting the HS-SCCH order to the UE.
  • Step 104 When the timer expires, the NodeB resends the HS-SCCH command to the UE.
  • the Node B may mistakenly consider the retransmission failure, and thus may abandon the activation or activation of the CPC state of the user, so the implementation In the example, a timer is set. After the timer expires, the NodeB initiates an attempt to send an HS-SCCH command again.
  • the NodeB may resend the HS-SCCH order to the UE.
  • the number of retransmissions and the time interval of the timer may be set in advance according to actual conditions.
  • the above steps 101-104 may be repeated until the value of the variable UE_DTX_DRX_Enable is TRUE.
  • the foregoing method may further include: when a variable
  • the UE When the value of UE_DTX_DRX_Enable is TRUE, the UE returns an acknowledgment (ACK) message according to the received HS-SCCH command; before the UE returns the ACK message, the NodeB still follows the non-CPC state (ie, no uplink is used) Non-continuous reception and downlink discontinuous transmission of data transmission mode) to perform data transmission with the UE, and attempt to send an HS-SCCH order to the UE, and until the NodeB receives the ACK message returned by the UE, the UE's variable UE-DTX is considered - DRX - The value of Enable is TRUE; then the relevant processing is performed according to the content of the command sent by the HS-SCCH, and the uplink discontinuity is synchronized with the CPC state of the UE.
  • ACK acknowledgment
  • step 104 after the timer expires, if the actual situation at this time has caused the NodeB not to perform CPC state synchronization with the UE, or the NodeB temporarily does not need to send an HS-SCCH command to deactivate or activate the CPC state of the UE. During operation, the NodeB may also no longer send HS-SCCH commands to the UE.
  • the CPC state synchronization method in another embodiment of the present invention may be as follows.
  • Step 201 If the UE side indicates that the value of the variable UE-DTX_DRX_Enable of the non-contiguous transmission or reception of the user equipment is FALSE, the UE does not return an acknowledgement message to the NodeB.
  • the UE may discard the HS-SCCH command sent by the NodeB or return a non-acknowledgement (NACK) message to the NodeB.
  • NACK non-acknowledgement
  • this embodiment may further include the following steps:
  • Step 202 The UE receives an HS-SCCH command that is retransmitted when the base station does not receive the acknowledgement message corresponding to the HS-SCCH command.
  • this embodiment may further include the following steps:
  • the CPC state synchronization method in another embodiment of the present invention may be as Next.
  • Step 301 The NodeB sends a high speed shared control channel command to the UE.
  • Step 302 If an acknowledgement message corresponding to the high speed shared control channel command is not received,
  • NodeB retransmits the high speed shared control channel command
  • Step 303 Stop transmitting the high speed shared control channel command when the number of times of retransmitting the high speed shared control channel command is greater than a predetermined value.
  • this embodiment may further include the following steps:
  • Step 304 Start a timer, and when the timer expires, resend the high-speed shared control channel command.
  • step 304 if the NodeB does not receive the confirmation message, it may choose to return to step 303.
  • this embodiment may further include: if the NodeB receives the acknowledgement message, and performs discontinuous data transmission with the UE.
  • the system for implementing CPC state synchronization in the embodiment of the present invention includes: an RNC, a UE, and a NodeB.
  • the RNC is configured to send a first configuration message to the user equipment UE, and send a second configuration message to the NodeB.
  • the first configuration message is used to enable the UE to set the value of its own UE-DTX-DRX_Enable to TRUE, so that the UE is in the CPC state; the second configuration message is used to make the NodeB in the CPC state. .
  • the UE is configured to change the value of the variable UE_DTX_DRX_Enable to TRUE according to the received first configuration message.
  • the UE may also be used to discard the HS-SCCH command sent by the NodeB when the CPC state of the UE side is not yet valid, that is, when the value of the variable UE_DTX_DRX_Enceived on the UE side is FALSE, or according to the NodeB.
  • the sent HS-SCCH command returns a NACK message.
  • a NodeB configured to enter a CPC state according to the received second configuration message, and send the message to the UE Send the HS-SCCH command.
  • the NodeB may be further configured to resend the HS-SCCH order to the UE when the acknowledgment message corresponding to the HS-SCCH order is not received, or when the NACK message is received; when the number of resending the HS-SCCH order is greater than
  • the timer is started and the HS-SCCH command is stopped from being sent to the UE; when the timer expires, the HS-SCCH command is resent to the UE.
  • the UE is further configured to: when the value of the variable UE_DTX_DRX_Enable is TRUE, return an ACK message according to the received HS-SCCH command; and when the value of the variable UE_DTX_DRX_Enable on the UE side is TRUE The UE enters the CPC state.
  • the NodeB is further configured to perform data transmission with the foregoing user equipment by using an uplink discontinuous reception and a downlink non-continuous transmission after receiving the ACK message. That is, non-continuous data transmission between the NodeB and the UE.
  • the Radio Network Controller can configure the variable parameters DTX DRX Params and the information unit DTX-DRX timing information to the UE through the following reconfiguration message: 1) Activate the Active Set Update message; 2) Cell Update Confirmation (Cell) Update Confirm message; 3) Physical Channel Reconfiguration message; 4) Radio Bearer Reconfiguration message; 5) Radio Bearer Release message; 6) Radio bearer setup (Radio) Bearer Setu) message; 7) RRC Connection Setup message; 8) Transport Channel Reconfiguration message.
  • RRC Radio Network Controller
  • the UE when the user equipment (UE) receives the RRC CONNECTION SETUP message, the ACTIVE SET UPDATE message, the CELL UPDATE CONFIRM message, or any other reconfiguration message, the UE The value of the variable discontinuous transmit or receive status (DTX-DRX_Status) will be determined.
  • the UE sets the value of the variable DTX_DRX_STATUS to TRUE when the following conditions are met (ie, indicating that the state represented by the variable is available): 1) The UE is in a cell dedicated channel (Cell_DCH) state;
  • variable high speed shared data channel reception (HS_DSCH RECEPTION) and the enhanced uplink dedicated channel (E-DCH_Transmission) are set to TRUE;
  • the UE has received the DTX-DRX timing information information element (IE).
  • IE DTX-DRX timing information information element
  • the UE When any of the above conditions are not met and the value of DTX_DRX_Status has been set to TRUE, the UE will perform the following operations:
  • the value of the state variable DTX_DRX_STATUS can be set to TRUE.
  • the upper layer sets the value of the variable DTX_DRX_STATUS to TRUE, after the Enable-Delay radio frame, the value indicating that the user equipment supports the discontinuous transmission or reception variable UE_DTX_DRX_Enable becomes TRUE, otherwise FALSE.
  • variable uplink discontinuous transmission activation (UL DTX Active) is TRUE when the following conditions are met:
  • DPCCH Uplink Dedicated Physical Control Channel
  • the above-mentioned uplink DPCCH discontinuous transmission is activated when the UE-DTX-DRX-Enceive is TRUE, and then the uplink DPCCH discontinuous transmission can be further performed through the HS-SCCH. Activate or reactivate the operation.
  • variable downlink discontinuous reception activation (DL-DRX-Active) is TRUE when the following conditions are met:
  • Variable UL—DTX—Active has a value of TRUE; 2) Downstream discontinuous reception is activated.
  • the RNC can also configure the CPC information (Radio Link Setup message) to the base station (NodeB) through the following signaling or configuration message; 2) Synchronised Radio Link Reconfiguration Preparation message; 3) Synchronized Radio Link Reconfiguration (Unsynchronised Radio Link Reconfiguration) message.
  • CPC information Radio Link Setup message
  • NodeB base station
  • Synchronised Radio Link Reconfiguration Preparation message 3) Synchronized Radio Link Reconfiguration (Unsynchronised Radio Link Reconfiguration) message.
  • the CPC information can be considered valid.
  • NodeB is After receiving the Synchronised Radio Link Reconfiguration Commit message, the CPC information is considered valid after the connection frame number (CFN) specified by the message is reached.
  • CCN connection frame number
  • the UE's UL-DTX-Active and DL-DRX-Active values have been changed to TRUE, that is, the UE is considered to be the UE.
  • the uplink discontinuous transmission and downlink discontinuous reception states have been entered.
  • the UE specifically includes: a receiving module, a synchronization module, and an output module. among them:
  • a receiving module configured to send the received first configuration message and the HS-SCCH command to the synchronization module.
  • a synchronization module configured to change a value of the variable UE_DTX_DRX_Enable to TRUE according to the first configuration message.
  • the synchronization module is further configured to discard the received HS-SCCH command when the value of the variable UE_DTX_DRX_Enceived on the UE side is FALSE, or send the output to the output module according to the received HS-SCCH command. NACK message.
  • an output module configured to output the foregoing NACK message to the NodeB.
  • the synchronization module in the foregoing UE may be further configured to: when the value of the variable UE_DTX_DRX_Enable is TRUE, send an ACK message to the output module according to the received HS-SCCH command; the output module is further used to The NodeB outputs the above ACK message.
  • the NodeB specifically includes: a receiving module, an information processing module, an output module, and a timer. among them:
  • a receiving module configured to send the received second configuration message and the NACK message to the information processing module.
  • the information processing module is configured to send an HS-SCCH command to the output module according to the received second configuration message.
  • the information processing module may be further configured to resend the HS-SCCH command to the output module when the acknowledgment message corresponding to the HS-SCCH command is not received, or when the NACK message is received;
  • an open command is sent to the timer to stop sending the HS-SCCH command to the output module; and the HS-SCCH command is resent to the output module according to the resend command of the timer.
  • a timer configured to start timing according to an open command; when the timer expires, send a resend command to the information processing module;
  • An output module configured to output an HS-SCCH command to the user equipment.
  • the information processing module in the foregoing NodeB is further configured to: after receiving the ACK message corresponding to the HS-SCCH command, send data to the output module by using an uplink discontinuous reception and a downlink discontinuous transmission; Also used to output data.
  • the NodeB has entered the uplink discontinuous transmission and the downlink discontinuous reception state according to the second configuration message sent by the radio network controller, but the UE side has not entered the uplink. If the UE-side variable UE-DTX-DRX-Enceive is still FALSE, if the UE receives the HS-SCCH command, the HS-SCCH command may be directly discarded or a NACK message may be returned.
  • the method is to enable the base station to learn the CPC state of the UE, and retransmit the HS-SCCH command by the base station for a predetermined number of times, and enable the timer to enable the UE and the base station to finally achieve the synchronization of the CPC state, thereby avoiding the part sent by the UE.
  • the occurrence of the data being discarded on the NodeB side, and effectively preventing the system from being uncontrollable, the Node B abandoning the occurrence of an erroneous operation such as deactivating or activating the CPC state of the user, and solving the problem caused by the unsynchronized CPC state.

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Description

状态同步的方法、 装置及系统
本申请要求于 2007 年 12 月 7 日提交中国专利局、 申请号为 200710195957.6、 发明名称为 "状态同步的方法、 装置及系统" 的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术, 尤其涉及状态同步的方法、 装置及系统。 背景技术
宽带码分多址( WCDMA, Wideband Code Division Multiple Access )系统 引入了连续包接入(CPC, Continuous Packet Connectivity )技术。 CPC技术 可通过上行非连续发送(UL— DTX )技术使得当信道中无数据发送时, 控制信 道无需再持续发送, 而只需非连续地发送, 以维持通信链路, 使其不会发生 中断, 从而减少了不必要的上行发送功率和上行干扰, 降低了上行底噪, 增 加了上行在线用户的数目。 具体来说, CPC技术中包括了以下三种技术: 1 ) 上行非连续发送( UL_DTX )技术; 2 )下行非连续接收( DL_DRX )技术; 3 ) 高速共享控制信道减少发送( HS-SCCH— less opration )技术。
在用户设备 ( UE )和基站(NodeB ) 间建立 CPC状态同步的过程中, 当 表示用户设备支持非连续发送或接收的变量 UE—DTX—DRX— Enable的值在基 站侧变为 TRUE时, 基站进入 CPC状态, 按照上行非连续接收的方式处理数 据或者按照上行非连续接收和下行非连续发送的方式处理数据。 通常 NodeB 在进入 CPC状态后, 经过 Enable— Delay个无线帧延时之后, 就可以认为 UE 也进入 CPC状态, NodeB通过 HS-SCCH向 UE发送上行非连续发送和 /或下 行非连续接收去激活或激活的命令。 当用户设备侧的 UE—DTX—DRX— Enable 的值也为 TRUE时, 用户设备也进入 CPC状态, 用户设备和基站之间进行非 连续传输。
在实现本发明过程中, 发明人发现现有技术可能存在以下问题, 在实现 NodeB和 UE的 CPC状态同步的过程中, 当 NodeB已经进入 CPC状态时, 而 UE可能仍未进入 CPC状态。 UE在未进入 CPC状态之前, 若收到 NodeB 发送的 HS-SCCH命令, 在混合自动重发请求(HARQ )进程处理过程中有可 能向 Node B返回确认(ACK )消息, 因此 NodeB将认为 HS-SCCH命令已生 效, 但实际上在 UE侧, 该 HS-SCCH命令并没有生效, 从而最终导致系统不 可控。
发明内容
本发明实施例的提供一种状态同步的方法、 装置及系统。
一方面, 本发明实施例提供一种状态同步的方法, 该方法包括: 若表示用户设备支持非连续发送或接收的变量 UE—DTX—DRX— Enable的 值为 FALSE, 用户设备丟弃所接收到的高速共享控制信道命令, 或者根据所 接收到的高速共享控制信道命令向基站返回非确认消息。
另一方面, 本发明的实施例中还提供了一种状态同步的方法, 包括: 基站向用户设备发送高速共享控制信道命令;
若未接收到与所述高速共享控制信道命令相应的确认消息, 基站重发高 速共享控制信道命令; 当重发高速共享控制信道命令的次数大于预定值时, 停止发送所述高速 共享控制信道命令。
再一方面, 本发明的实施例中还提供了一种状态同步的系统, 该系统包 括: 无线网络控制器、 用户设备和基站;
所述无线网络控制器, 用于向用户设备发送第一配置消息, 向基站发送 第二配置消息;
所述用 户设备, 用 于根据接收到的第一配置消息将变量 UE—DTX—DRX— Enable的值变为 TRUE;
所述基站, 用于根据接收到的第二配置消息向所述用户设备发送高速共 享控制信道命令;
其中所述用户设备在变量 UE—DTX—DRX— Enable的值变为 TRUE时 , 根 据接收的高速共享控制信道命令向基站返回确认消息;
所述基站在收到所述确认消息后和用户设备之间进行非连续数据传输。 又一方面, 本发明的实施例中还提供了一种用户设备, 该用户设备包括: 接收模块、 同步模块和输出模块;
所述接收模块, 用于将接收到的第一配置消息和高速共享控制信道命令 发送给所述同步模块;
所述同步模块, 用于根据第一配置消息将变量 UE—DTX—DRX— Enable的 值变为 TRUE,以及根据接收到的高速共享控制信道命令向所述输出模块发送 确认消息;
所述输出模块, 用于输出所述的确认消息。
又一方面, 本发明的实施例中还提供了一种基站, 该基站包括: 接收模 块、 信息处理模块、 输出模块和定时器;
所述接收模块, 用于将接收到的第二配置消息和非确认消息发送给所述 信息处理模块;
所述信息处理模块, 用于根据接收到的第二配置消息向所述输出模块发 送高速共享控制信道命令;
所述输出模块, 用于输出所述的高速共享控制信道命令。
本发明的实施例中 , UE侧在 UE—DTX—DRX— Enable为 FALSE时 , 如果 接收到 HS-SCCH命令, 可通过直接丟弃 HS-SCCH命令, 或返回 NACK消息 的方式来使得基站获知 UE的 CPC状态, 有效地防止了系统不可控。
附图说明
图 1为本发明一个实施例中 CPC状态同步方法的流程图;
图 2为本发明另一个实施例中实现 CPC状态同步的系统的结构图。
具体实施方式
发明人经过分析发现,在实现 NodeB和 UE的 CPC状态同步过程中, RNC 需要向 NodeB和 UE发送信令或 CPC消息, 但无法保证发送给 NodeB和 UE 的信令或 CPC消息可同时生效。例如,如果 RNC在给 UE发送 RRC Connection Setu 信息之前, 已经给 NodeB发送了 Radio Link Setu 消息, 则 NodeB侧的 UE— DTX— DRX— Enable从 FALSE变为 TRUE的时间将早于 UE侧。
如果 NodeB侧的 UE—DTX—DRX— Enable先从 FALSE 变为 TRUE, 则 NodeB将先进入 CPC状态(即变量 UL—DTX— Active的值为 TRUE,或者变量 UL—DTX— Active和变量 DL—DRX— Active的值均为 TRUE的状态), 此时, NodeB 将按照上行非连续接收的方式处理数据或者按照上行非连续接收和下 行非连续发送的方式处理数据; 而 UE在未进入 CPC状态之前, 仍将按照正 常的上行发送和下行接收的方式进行数据传输。此时,将导致 UE所发送的数 据有一部分将被 NodeB丟弃, 从而造成部分数据的丟失。
此外 UE在未进入 CPC状态之前, 在混合自动重发请求( HARQ )进程 处理过程中有可能向 Node B 返回确认(ACK ) 消息, 因此 NodeB 将认为 HS-SCCH命令已生效, 但实际上在 UE侧, 该 HS-SCCH命令并没有生效, 从而最终导致系统不可控。
为使本发明实施例的目的、 技术方案和优点表达得更加清楚明白, 下面 结合附图及对本发明实施例再作进一步详细的说明。
图 1为本发明实施例中 CPC状态同步方法的流程图。 如图 1所示, 本发 明实施例中的 CPC状态同步方法包括如下步骤:
步骤 101 , 当 UE 侧表示用户设备支持非连续发送或接收的变量 UE—DTX—DRX— Enable的值为 FALSE时, UE丟弃 NodeB发送的 HS-SCCH 命令, 或者返回非确认 ( NACK ) 消息。
具体来说,若 NodeB侧的变量 UE—DTX—DRX— Enable为 TRUE,即 NodeB 进入 CPC状态, 而 UE侧变量 UE—DTX—DRX— Enable的值为 FALSE时, 如 果 UE收到了 NodeB所发送的 HS-SCCH命令,则 UE可以向 NodeB返回 NACK 消息, 或者直接丟弃该 HS-SCCH命令, 不返回任何消息。
步骤 102, 当未接收到确认消息时, NodeB向 UE重发 HS-SCCH命令。 未接收到确认消息指 NodeB没有收到 UE发送的 ACK消息。
具体来说, 当 NodeB向 UE发送 HS-SCCH命令后, 如果 NodeB仅收到 UE发送的 NACK消息或者没有收到 UE的任何反馈信息, 则 NodeB可以继 续向 UE重发 HS-SCCH命令。
步骤 103 , 当重发次数大于预定值时, NodeB开启定时器, 停止向 UE发 送 HS-SCCH命令;
在 UE—DTX—DRX— Enable为 FALSE状态时, 如果 UE在混合自动重发请 求( HARQ )进程处理过程中返回 NACK消息, 则 NodeB会误认为 UE没有 正确接收到 HS-SCCH 命令, 所以将不断重发该命令, 直到 UE 的 UE—DTX—DRX— Enabled的值变为 TRUE, 从而导致小区的下行容量下降, 因 而本实施例选择对重发次数进行了限制。
具体来说, NodeB可以设置一个计数器,并尝试一定次数的重发 HS-SCCH 命令的操作。 如果经过预定次数的重发之后 (即计数器的值达到预定值时), NodeB仍然没有收到 UE发送的 ACK消息, 则 NodeB可以启动一个定时器, 并停止向 UE发送 HS-SCCH命令。
步骤 104, 当定时器超时, NodeB向所述 UE重发 HS-SCCH命令。
如果 Node B在数次重发 HS-SCCH命令后仍未收到 ACK, 则 Node B有 可能误认为重发失败, 从而有可能放弃对该用户的 CPC状态进行去激活或激 活操作, 因此本实施例中设定了一个定时器, 当定时器超时之后, NodeB 再 次发起发送 HS-SCCH命令的尝试。
具体来说,当定时器超时之后, NodeB可向所述 UE重发 HS-SCCH命令。 在上述的步骤中, 所述的重发次数以及定时器的时间间隔均可以根据实 际情况预先进行设置。
经过上述步骤后, 如果 UE—DTX—DRX— Enable的值仍为 FALSE时, 则可 重复上述步骤 101 ~ 104,直到当变量 UE—DTX—DRX— Enable的值为 TRUE时 为止。 在本发明 实施例 中 , 上述的 方法还可 以 包括: 当 变量
UE—DTX—DRX— Enable的值为 TRUE时, UE根据所接收到的 HS-SCCH命令, 返回确认(ACK ) 消息; 当 UE未返回 ACK消息之前, NodeB仍然按照非 CPC状态 (即不使用上行非连续接收和下行非连续发送的数据传输方式) 来 与 UE进行数据传输, 并尝试向 UE发送 HS-SCCH命令, 且直到 NodeB收到 UE返回的 ACK消息后, 才认为 UE的变量 UE—DTX—DRX— Enable的值为 TRUE; 然后再根据 HS-SCCH发送的命令内容做相关处理, 使用上行非连续 与 UE的 CPC状态的同步。
另外, 在步骤 104 中, 当定时器超时之后, 如果此时的实际情况已经使 得 NodeB不必与 UE进行 CPC状态同步,或者 NodeB暂时无需发送 HS-SCCH 命令对 UE的 CPC状态进行去激活操作或激活操作时, NodeB也可不再向 UE 发送 HS-SCCH命令。
本领域技术人员不难明白, 作为一个可选的方案, 本发明另一个实施例 中 CPC状态同步方法可以如下。
步骤 201 , 若 UE 侧表示用户设备支持非连续发送或接收的变量 UE—DTX—DRX— Enable的值为 FALSE时, UE不向 NodeB返回确认消息。
例如 UE 可以丟弃 NodeB 发送的 HS-SCCH命令, 或者返回非确认 ( NACK ) 消息给 NodeB。
进一步地, 本实施例还可以包括如下步骤:
步骤 202, UE接收所述基站未接收到与所述 HS-SCCH命令相应的确认 消息时重发的 HS-SCCH命令。
进一步地, 本实施例还可以包括如下步骤:
若 UE侧变量 UE—DTX—DRX— Enable的值为 TRUE, 在接收到 NodeB发 送的的 HS-SCCH命令后, 返回确认消息给 NodeB。
作为一个可选的方案, 本发明又一个实施例中 CPC状态同步方法可以如 下。
步骤 301 , NodeB向 UE发送高速共享控制信道命令;
步骤 302, 若未接收到与所述高速共享控制信道命令相应的确认消息,
NodeB重发高速共享控制信道命令;
步骤 303 ,当重发高速共享控制信道命令的次数大于预定值时停止发送所 述高速共享控制信道命令。
进一步地, 本实施例还可以包括如下步骤:
步骤 304, 启动定时器, 当所述定时器超时, 重发所述高速共享控制信道 命令。
为提高同步的成功率, 以及减少多次重发导致的资源浪费, 在步骤 304 后, 若 NodeB没有收到确认消息, 可以选择返回步骤 303。
此外, 本实施例还可以包括: 若 NodeB接收到所述确认消息, 和 UE之 间进行非连续数据传输。
图 2为本发明实施例中实现 CPC状态同步的系统的结构图。如图 2所示, 本发明实施例中实现 CPC状态同步的系统包括: RNC、 UE和 NodeB。
在本实施例提供的系统中, RNC,用于向用户设备 UE发送第一配置消息, 以及向 NodeB发送第二配置消息。
其中,所述的第一配置消息用于使 UE将其自身的 UE—DTX—DRX— Enable 的值设置为 TRUE, 使得 UE处于 CPC状态; 所述的第二配置消息用于使得 NodeB处于 CPC状态。
UE,用于根据接收到的第一配置消息将变量 UE—DTX—DRX— Enable的值 变为 TRUE。
此外, UE还可以用于当 UE侧的 CPC状态还未生效时, 即 UE侧的变量 UE—DTX—DRX— Enable的值为 FALSE时, 丟弃由 NodeB发送的 HS-SCCH命 令, 或者根据 NodeB发送的 HS-SCCH命令返回 NACK消息。
NodeB, 用于根据接收到的第二配置消息进入到 CPC状态, 并向 UE发 送 HS-SCCH命令。
此夕卜, NodeB还可以用于当未接收到与上述 HS-SCCH命令相应的确认消 息, 或接收到 NACK消息时, 向 UE重发 HS-SCCH命令; 当重发 HS-SCCH 命令的次数大于预定值时, 开启定时器并停止向 UE发送 HS-SCCH命令; 当 定时器超时, 向 UE重发 HS-SCCH命令。
此外, 在本发明的实施例中, 在上述 CPC状态同步的系统中,
UE, 还用于当变量 UE—DTX—DRX— Enable的值为 TRUE时, 根据接收到 的 HS-SCCH命令返回 ACK消息;以及在 UE侧的变量 UE—DTX—DRX— Enable 的值为 TRUE时, UE进入 CPC状态。
NodeB, 还用于当接收到 ACK消息后, 使用上行非连续接收和下行非连 续发送的方式与上述用户设备进行数据传输。 也就是 NodeB和 UE之间进行 非连续数据传输。
无线网络控制器( RNC )可以通过如下的重配置消息向 UE配置变量参数 DTX DRX Params和信息单元 DTX-DRX timing information: 1 )激活设置更 新( Active Set Update )消息; 2 )小区更新确认 ( Cell Update Confirm )消息; 3 )物理信道重配置( Physical Channel Reconfiguration )消息; 4 )无线承载重 配置 ( Radio Bearer Reconfiguration ) 消息; 5 )无线 载释放 ( Radio Bearer Release ) 消息; 6 )无线承载建立 (Radio Bearer Setu ) 消息; 7 )无线资源 控制连接建立( RRC Connection Setup )消息; 8 )传输信道重配置( Transport Channel Reconfiguration ) 消息。
例如, 当用户设备 ( UE ) 接收到无线资源控制连接建立 ( RRC CONNECTION SETUP )消息、激活设置更新( ACTIVE SET UPDATE )消息、 小区更新确认( CELL UPDATE CONFIRM ) 消息或其他任何重配置消息时 , UE将确定变量非连续发送或接收状态 ( DTX—DRX— Status ) 的值。
当满足下列条件时,UE将变量 DTX—DRX— STATUS的值设置为 TRUE(即 表示该变量所表示的状态为可用): 1 ) UE处于小区专用信道(Cell_DCH )状态;
2 )变量高速共享数据信道接收(HS_DSCH RECEPTION )和增强上行链 路专用信道( E—DCH— TRANSMISSION ) 的值都被设置为 TRUE;
3 )没有配置专用传输信道;
4 ) 变量非连续发送或接收参数 ( DTX DRX Params ) 已被赋值;
5 ) UE已经收到 DTX-DRX定时( DTX-DRX timing information )信息单 元(IE )。
当上述任意一个条件未满足,且 DTX—DRX— Status的值已被设置为 TRUE 时, UE将执行如下操作:
1 )将变量 DTX—DRX— STATUS的值设置为 FALSE (即表示该变量所表 示的状态为不可用);
2 )清除变量 DTX_DRX_PARAMS;
3 )停止 DTX-DRX模式的相关活动。
由上可知, 在满足其他条件的情况下, 当变量 DTX—DRX— PARAMS已配 置, 且 UE 收到了 DTX-DRX timing information 信息单元, 则状态变量 DTX—DRX— STATUS的值就可以被设置为 TRUE。
此外, 如果高层将变量 DTX—DRX— STATUS的值设置为 TRUE, 则在经 过 Enable— Delay 个无线帧后, 表示用户设备支持非连续发送或接收的变量 UE— DTX—DRX— Enable的值变为 TRUE, 否则为 FALSE。
具体来讲, 当满足如下条件时, 变量上行非连续发送激活 ( UL DTX Active ) 的值为 TRUE:
1 ) 变量 UE— DTX—DRX— Enable的值为 TRUE;
2 )上行专用物理控制信道(DPCCH ) 非连续发送被激活。
否则, 变量 UL—DTX— Active的值为 FALSE。
上述的上行 DPCCH非连续发送在 UE— DTX—DRX— Enable为 TRUE时被 激活, 随后还可以通过 HS-SCCH进一步地对上行 DPCCH非连续发送进行去 激活或再激活操作。
另外, 当满足如下条件时, 变量下行非连续接收激活(DL—DRX— Active ) 的值为 TRUE:
1 ) 变量 UL— DTX— Active的值为 TRUE; 2 ) 下行非连续接收被激活。 对于上述的这些过程, 可以 ^1如下的总结:
1 ) 当 UE收到 DTX_DRX_PARAMS和 DTX-DRX timing information后, DTX— DRX— STATUS的值从 FALSE变为 TRUE;
2 )经过 Enable— Delay延时之后, UE— DTX— DRX— Enable的值从 FALSE 变为 TRUE;
3 ) 当 UE— DTX— DRX— Enable 的值从 FALSE 变为 TRUE 时, UL— DTX— Active 的值变为 TRUE , 后继可以通过 HS-SCCH 命令对上行 DPCCH非连续发送进行去激活或激活操作。 因此, 当 UE—DTX—DRX— Enable 的值从 FALSE变为 TRUE, UL— DTX— Active的值变为 TRUE;
4 ) 当 UE—DTX—DRX— Enable 的值从 FALSE 变为 TRUE , 且 UL—DTX— Active的值为 TRUE时, DL—DRX— Active的值变为 TRUE, 后继可 以通过 HS-SCCH命令对下行非连续接收进行去激活或激活操作。 因此, 当 UE—DTX—DRX— Enable的值从 FALSE变为 TRUE, UL—DTX— Active的值变为 TRUE时, DL—DRX— Active的值变为 TRUE。
RNC还可以通过如下的信令或配置消息给基站( NodeB )配置 CPC信息, 立( Radio Link Setup )消息; 2 )同步的无线链路重配置准备( Synchronised Radio Link Reconfiguration Preparation ) 消息; 3 ) 非同步的无线链路重配置 ( Unsynchronised Radio Link Reconfiguration ) 消息。
对于 Radio Link Setu 消息和 Unsynchronised Radio Link Reconfiguration 消息,当 NodeB收到上述两种消息中的一种消息后,就可认为 CPC信息生效。
对于 Synchronised Radio Link Reconfiguration Preparation消息 , NodeB在 收到 Synchronised Radio Link Reconfiguration Commit消息后, 当该消息指定 的连接帧号 (CFN )达到之后, 则认为 CPC信息生效。
对 NodeB而言, 在收到 CPC信息且参数生效之后, 经过 Enable— Delay 延时之后, 就可以认为 UE的 UL—DTX— Active和 DL—DRX— Active的值已经 变为 TRUE,即认为该 UE已经进入了上行非连续发送和下行非连续接收状态。
此外, 如图 2所示, UE具体包括: 接收模块、 同步模块和输出模块。 其 中:
接收模块,用于将接收到的第一配置消息和 HS-SCCH命令发送给同步模 块。
同步模块, 用于根据第一配置消息将变量 UE—DTX—DRX— Enable的值变 为 TRUE。
此外, 同步模块还用于当 UE侧的变量 UE—DTX—DRX— Enable 的值为 FALSE时, 丟弃所接收到的 HS-SCCH命令, 或者根据所接收到的 HS-SCCH 命令向输出模块发送 NACK消息。
输出模块, 用于向 NodeB输出上述的 NACK消息。
其中,上述的 UE中的同步模块,还可用于当变量 UE—DTX—DRX— Enable 的值为 TRUE时, 根据接收到的 HS-SCCH命令向输出模块发送 ACK消息; 输出模块, 还用于向 NodeB输出上述的 ACK消息。
另外, 如图 2所示, NodeB具体包括: 接收模块、 信息处理模块、 输出 模块和定时器。 其中:
接收模块, 用于将接收到的第二配置消息和 NACK消息发送给信息处理 模块。
信息处理模块, 用于根据接收到的第二配置消息向输出模块发送 HS-SCCH命令。
此外,信息处理模块还可以用于当未接收到与上述 HS-SCCH命令相应的 确认消息, 或接收到 NACK消息时, 向输出模块重发 HS-SCCH命令; 当重 发次数大于预定值时,向定时器发送开启指令,停止向输出模块发送 HS-SCCH 命令; 根据定时器的重发指令, 向输出模块重发 HS-SCCH命令。
或者当重发次数大于预定值时, 停止向输出模块发送 HS-SCCH命令; 向 定时器发送开启指令, 并根据定时器的重发指令, 向输出模块重发 HS-SCCH 命令
定时器, 用于根据开启指令开始计时; 当定时器超时, 向信息处理模块 发送重发指令;
输出模块, 用于向用户设备输出 HS-SCCH命令。
其中, 上述的 NodeB 中的信息处理模块, 还用于当接收到与上述 HS-SCCH命令相应的 ACK消息后, 使用上行非连续接收和下行非连续发送 的方式向输出模块发送数据; 输出模块, 还用于输出数据。
通过使用本发明实施例中所提供的方法、 装置及系统, 当 NodeB已经根 据无线网络控制器发送的第二配置消息进入了上行非连续发送和下行非连续 接收状态, 但是 UE侧仍未进入上行非连续发送和下行非连续接收状态, 即 UE侧变量 UE—DTX—DRX— Enable仍为 FALSE时,如果 UE接收到 HS-SCCH 命令, 则可通过直接丟弃 HS-SCCH命令, 或返回 NACK消息的方式来使基 站获知 UE的 CPC状态, 并通过基站重发预定次数的 HS-SCCH命令, 且开 启定时器的方式,使得 UE和基站最终能够达到 CPC状态的同步,避免了 UE 所发送的部分数据在 NodeB侧被丟弃的情况的发生, 并有效地防止了系统不 可控、 Node B放弃对该用户的 CPC状态进行去激活或激活操作等误操作的发 生, 解决 CPC状态不同步带来的 NodeB和 UE行为不同步的问题。
通过以上的实施方式的描述, 本领域普通技术人员可以理解: 实现上述 实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成, 所述的程序可以存储于一计算机可读取存储介质中, 该程序在执行时, 包括 如上述方法实施例的步骤, 所述的存储介质, 如: R0M/RAM、 磁碟、 光盘等。 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。 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应 包含在本发明的保护范围之内。

Claims

权 利 要求 书
1、 一种状态同步的方法, 其特征在于, 包括:
若表示用户设备支持非连续发送或接收的变量 UE—DTX—DRX— Enable的值 为 FALSE, 用户设备丟弃所接收到的高速共享控制信道命令, 或者根据所接收 到的高速共享控制信道命令向基站返回非确认消息。
2、 根据权利要求 1所述的状态同步的方法, 其特征在于: 还包括 用户设备接收所述基站未接收到与所述高速共享控制信道命令相应的确认 消息时重发的高速共享控制信道命令。
3、 根据权利要求 1或 2所述的状态同步的方法, 其特征在于, 还包括: 若所述变量 UE—DTX—DRX— Enable的值为 TRUE时, 用户设备根据接收到 的高速共享控制信道命令返回确认消息。
4、 一种状态同步的方法, 其特征在于, 包括:
基站向用户设备发送高速共享控制信道命令;
若未接收到与所述高速共享控制信道命令相应的确认消息, 基站重发高速 共享控制信道命令;
当重发高速共享控制信道命令的次数大于预定值时, 停止发送所述高速共 享控制信道命令。
5、 根据权利要求 4所述的状态同步的方法, 其特征在于, 还包括: 启动一个定时器, 当该定时器超时, 基站向所述用户设备重发高速共享控 制信道命令。
6、 根据权利要求 4或 5所述的状态同步的方法, 其特征在于, 还包括: 若接收到所述确认消息后, 使用上行非连续接收和下行非连续发送的方式 和用户设备进行数据传输。
7、 一种状态同步的系统, 其特征在于, 包括: 无线网络控制器、 用户设备 和基站;
所述无线网络控制器, 用于向用户设备发送第一配置消息, 向基站发送第 二配置消息;
所述用 户 设备, 用 于根据接收到 的第一配置消 息将变量
UE—DTX—DRX— Enable的值变为 TRUE;
所述基站, 用于根据接收到的第二配置消息向所述用户设备发送高速共享 控制信道命令;
其中所述用户设备在变量 UE—DTX—DRX— Enable的值变为 TRUE时 , 根据 接收的高速共享控制信道命令向基站返回确认消息;
所述基站在收到所述确认消息后和用户设备之间进行非连续数据传输。
8、 根据权利要求 7所述的状态同步的系统, 其特征在于,
所述用户设备, 还用于当变量 UE—DTX—DRX— Enable的值为 FALSE时 ,丟 弃基站发送的 HS-SCCH命令,或者根据基站发送的高速共享控制信道命令返回 非确认消息。
所述基站, 还用于当未接收到与所述高速共享控制信道命令相应的确认消 息, 或接收到非确认消息时, 向用户设备重发高速共享控制信道命令。
9、 一种用户设备, 其特征在于, 包括: 接收模块、 同步模块和输出模块; 所述接收模块, 用于将接收到的第一配置消息和高速共享控制信道命令发 送给所述同步模块;
所述同步模块, 用于根据第一配置消息将变量 UE—DTX—DRX— Enable的值 变为 TRUE,以及根据接收到的高速共享控制信道命令向所述输出模块发送确认 消息;
所述输出模块, 用于输出所述的确认消息。
10、 根据权利要求 9所述的用户设备, 其特征在于,
所述同步模块, 还用于当变量 UE—DTX—DRX— Enable的值为 FALSE时,丟 弃所接收到的高速共享控制信道命令, 或者根据所接收到的高速共享控制信道 命令向输出模块发送非确认消息;
所述输出模块, 还用于输出所述非确认消息。
11、 一种基站, 其特征在于, 包括: 接收模块、 信息处理模块、 输出模块 和定时器;
所述接收模块, 用于将接收到的第二配置消息和非确认消息发送给所述信 息处理模块;
所述信息处理模块, 用于根据接收到的第二配置消息向所述输出模块发送 高速共享控制信道命令;
所述输出模块, 用于输出所述的高速共享控制信道命令。
12、 根据权利要求 11所述的基站, 其特征在于,
所述信息处理模块, 还用于当接收到与所述高速共享控制信道命令相应的 确认消息后, 使用上行非连续接收和下行非连续发送的方式向所述输出模块发 送数据;
所述输出模块, 还用于输出所述的数据。
13、 根据权利要求 11或 12所述的基站, 其特征在于,
所述信息处理模块还用于当未接收到与所述高速共享控制信道命令相应的 确认消息, 或接收到 NACK消息时, 向输出模块重发高速共享控制信道命令。
14、 根据权利要求 13所述的基站, 其特征在于,
所述信息处理模块还用于当重发次数大于预定值时, 停止向输出模块发送 高速共享控制信道命令。
15、 根据权利要求 14所述的基站, 其特征在于, 还包括:
定时器, 用于当重发次数大于预定值时开始计时, 若超时, 向所述信息处 理模块发送重发指令;
所述信息处理模块根据定时器的重发指令, 向输出模块重发 HS-SCCH命 令。
PCT/CN2008/073358 2007-12-07 2008-12-05 状态同步的方法、装置及系统 WO2009086770A1 (zh)

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