CN101166057A - A method and device for uplink synchronization control in a TD-SCDMA system - Google Patents
A method and device for uplink synchronization control in a TD-SCDMA system Download PDFInfo
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Abstract
本发明提供一种TD-SCDMA系统中的上行同步控制方法及装置,通过终端响应基站按照信号最好的时隙的信道冲激响应产生的同步偏移命令字,根据第一个上行时隙的时间提前量为每个上行时隙配置时间提前量,从而可以提高上行多时隙业务的上行同步控制频率,也解决了上行多时隙业务上行时间提前量配置不准确的问题,减小了同一上行时隙信道间的相互干扰。此外,在HSDPA业务中,本发明通过终端响应基站发送的同步偏移命令字,配置伴随专用物理信道DPCH或共享信息信道HS-SICH的上行时间提前量,从而解决了HSDPA业务中HS-SICH上行时间提前量算法复杂并且配置不准确的问题,提高了HS-SICH和伴随DPCH的上行同步控制频率,减小了同一上行时隙信道间的相互干扰。
The present invention provides an uplink synchronization control method and device in a TD-SCDMA system. The terminal responds to the synchronization offset command word generated by the base station according to the channel impulse response of the time slot with the best signal, and according to the first uplink time slot The timing advance is configured for each uplink time slot, so that the uplink synchronization control frequency of the uplink multi-slot service can be improved, and the problem of inaccurate configuration of the uplink time advance of the uplink multi-slot service is solved, reducing the time for the same uplink Mutual interference between slot channels. In addition, in the HSDPA service, the present invention configures the uplink timing advance of the dedicated physical channel DPCH or the shared information channel HS-SICH through the terminal responding to the synchronization offset command word sent by the base station, thereby solving the problem of HS-SICH uplink in the HSDPA service. The timing advance algorithm is complicated and the configuration is inaccurate, which improves the uplink synchronization control frequency of HS-SICH and accompanying DPCH, and reduces the mutual interference between channels in the same uplink time slot.
Description
技术领域 technical field
本发明涉及通信领域,尤其涉及一种TD-SCDMA系统中的上行同步控制方法及装置。The invention relates to the communication field, in particular to an uplink synchronization control method and device in a TD-SCDMA system.
背景技术 Background technique
在时分-同步码分多址(TD-SCDMA,Time-Division Synchronization CodeDivision-Multiple-Access)系统中,由于上行多时隙业务每个上行时隙的时间提前量分别独立控制,不同时隙配置不同的时间提前量,所以终端实现较为复杂。此外,当终端没有上行数据或数据不饱满时,只在部分上行时隙发送数据,这样基站就不能根据没有上行数据的时隙产生同步偏移(SS,synchronousshift)命令字,从而造成终端上行时间提前量的配置错误。In Time-Division Synchronization Code Division-Multiple-Access (TD-SCDMA, Time-Division Synchronization Code Division-Multiple-Access) system, since the time advance of each uplink time slot of the uplink multi-slot service is independently controlled, different time slots are configured with different Time advance, so the terminal implementation is more complicated. In addition, when the terminal has no uplink data or the data is not full, it only sends data in some uplink time slots, so that the base station cannot generate a synchronization shift (SS, synchronous shift) command word according to the time slots without uplink data, thereby causing the terminal uplink time Misconfiguration of lead.
高速下行分组接入(HSDPA,High Speed Downlink Package Access)业务伴随专用物理信道(DPCH,Dedicated Physical Channel)和共享信息信道(SICH,Shared Information Channel)的上行时间提前量也分别独立控制,根据协议当同步控制信道(SCCH,Synchronisation Control Channel)不连续时,SICH上行时间提前量会响应DPCH的SS命令字。目前,对于HSDPA的SICH上行同步控制尚无明确的算法。The high-speed downlink packet access (HSDPA, High Speed Downlink Package Access) service is accompanied by the dedicated physical channel (DPCH, Dedicated Physical Channel) and shared information channel (SICH, Shared Information Channel). When the Synchronization Control Channel (SCCH, Synchronization Control Channel) is discontinuous, the SICH uplink timing advance will respond to the SS command word of the DPCH. At present, there is no clear algorithm for SICH uplink synchronization control of HSDPA.
HSDPA业务中,SICH上行同步响应SCCH携带的SS命令字,SCCH/SICH调度不连续,SICH上行时间提前量控制频率很低,根据协议当SCCH不连续时,SICH响应伴随DPCH的SS命令字,但是很多情况下伴随DPCH的SS命令字不能适用于SICH时间提前量控制,这造成SICH上行时间提前量控制错误。In the HSDPA service, the SICH uplink synchronously responds to the SS command word carried by the SCCH, the SCCH/SICH scheduling is discontinuous, and the SICH uplink timing advance control frequency is very low. According to the agreement, when the SCCH is discontinuous, the SICH response is accompanied by the SS command word of the DPCH, but In many cases, the SS command word accompanying the DPCH cannot be applied to the SICH timing advance control, which causes an error in the SICH uplink timing advance control.
发明内容 Contents of the invention
本发明要解决的技术问题在于提供一种TD-SCDMA系统中的上行同步控制方法及装置,能够简化上行多时隙业务的上行时间提前量的配置复杂度及提高准确度。The technical problem to be solved by the present invention is to provide an uplink synchronization control method and device in a TD-SCDMA system, which can simplify the configuration complexity of the uplink timing advance of the uplink multi-slot service and improve the accuracy.
实现本发明目的的技术方案如下:The technical scheme that realizes the object of the present invention is as follows:
一种TD-SCDMA系统中的上行同步控制方法,终端响应基站发送的同步偏移命令字,根据第一个上行时隙的时间提前量为每个上行时隙配置时间提前量。An uplink synchronization control method in a TD-SCDMA system, in which a terminal responds to a synchronization offset command word sent by a base station, and configures a time advance for each uplink time slot according to the time advance of the first uplink time slot.
优选的,按照如下步骤为每个上行时隙配置时间提前量:Preferably, the timing advance is configured for each uplink time slot according to the following steps:
判断不同时隙的信道估计窗个数是否相同,如果相同,则各个时隙上行时间提前量配置为第一个上行时隙的时间提前量;如果不同,则各个时隙上行时间提前量配置为第一个上行时隙的时间提前量增加相应的偏移值。Determine whether the number of channel estimation windows in different time slots is the same. If they are the same, the uplink timing advance of each time slot is configured as the time advance of the first uplink time slot; if they are different, the uplink time advance of each time slot is configured as The timing advance of the first uplink time slot is increased by the corresponding offset value.
优选的,所述偏移值是第一个上行时隙的信道冲激响应时隙目标值与第n上行时隙的Cir时隙目标值之差。Preferably, the offset value is the difference between the channel impulse response time slot target value of the first uplink time slot and the Cir time slot target value of the nth uplink time slot.
优选的,所述第n上行时隙的Cir时隙目标值按照如下步骤获得:Preferably, the Cir time slot target value of the nth uplink time slot is obtained according to the following steps:
其中,Cir_target(n)为第n上行时隙的Cir时隙目标值;函数为向下取整,函数为向上取整;为第n上行时隙信道估计窗的长度;midamble_k(n)为第n上行时隙信道估计窗个数。 Wherein, Cir_target(n) is the Cir time slot target value of the nth uplink time slot; function For rounding down, the function is rounded up; is the length of the channel estimation window of the nth uplink time slot; midamble_k(n) is the number of channel estimation windows of the nth uplink time slot.
优选的,所述同步偏移命令字是按照信号最好的时隙的信道冲激响应产生的。Preferably, the synchronization offset command word is generated according to the channel impulse response of the time slot with the best signal.
优选的,所述信号最好的时隙是基站选择所有上行时隙的信噪比或者接收的信号功率码大的时隙。Preferably, the time slot with the best signal is the time slot in which the signal-to-noise ratio or received signal power code of all uplink time slots is selected by the base station.
一种TD-SCDMA系统中的上行同步控制装置,包括:An uplink synchronization control device in a TD-SCDMA system, comprising:
第一判断单元,用于响应基站发送的同步偏移命令字,判断不同时隙的信道估计窗个数是否相同;The first judging unit is used to respond to the synchronization offset command word sent by the base station, and judge whether the number of channel estimation windows in different time slots is the same;
第一配置单元,用于根据第一判断单元反馈的判断结果,依据第一个上行时隙的时间提前量为每个上行时隙配置时间提前量。The first configuration unit is configured to configure a timing advance for each uplink time slot according to the timing advance of the first uplink time slot according to the judgment result fed back by the first judgment unit.
优选的,所述第一配置单元按照如下方式为每个上行时隙配置时间提前量:Preferably, the first configuration unit configures the timing advance for each uplink time slot as follows:
所述第一判断单元反馈不同时隙的信道估计窗个数相同的判断结果,则第一配置单元将各个时隙上行时间提前量配置为第一个上行时隙的时间提前量;The first judgment unit feeds back the judgment result that the number of channel estimation windows in different time slots is the same, and the first configuration unit configures the uplink timing advance of each time slot as the time advance of the first uplink time slot;
所述第一判断单元反馈不同时隙的信道估计窗个数不相同的判断结果,则第一配置单元将各个时隙上行时间提前量配置为第一个上行时隙的时间提前量增加相应的偏移值。The first judgment unit feeds back the judgment result that the number of channel estimation windows in different time slots is different, then the first configuration unit configures the uplink timing advance of each time slot as the timing advance of the first uplink time slot increases by a corresponding offset value.
优选的,所述偏移值是第一个上行时隙的信道冲激响应Cir时隙目标值与第n上行时隙的Cir时隙目标值之差。Preferably, the offset value is the difference between the channel impulse response Cir time slot target value of the first uplink time slot and the Cir time slot target value of the nth uplink time slot.
优选的,所述第n上行时隙的Cir时隙目标值按照如下方式获得:Preferably, the Cir time slot target value of the nth uplink time slot is obtained as follows:
其中,Cir_target(n)为第n上行时隙的Cir时隙目标值;函数为向下取整,函数为向上取整;为第n上行时隙信道估计窗的长度;midamble_k(n)为第n上行时隙信道估计窗个数。 Wherein, Cir_target(n) is the Cir time slot target value of the nth uplink time slot; function For rounding down, the function is rounded up; is the length of the channel estimation window of the nth uplink time slot; midamble_k(n) is the number of channel estimation windows of the nth uplink time slot.
优选的,所述同步偏移命令字是由基站按照信号最好的时隙的信道冲激响应产生的。Preferably, the synchronization offset command word is generated by the base station according to the channel impulse response of the time slot with the best signal.
优选的,所述信号最好的时隙是基站选择所有上行时隙的信噪比或者接收的信号功率码大的时隙。Preferably, the time slot with the best signal is the time slot in which the signal-to-noise ratio or received signal power code of all uplink time slots is selected by the base station.
此外,本发明还进一步针对HSDPA业务,提供一种TD-SCDMA系统中的上行同步控制方法,终端响应基站发送的同步偏移命令字,配置伴随专用物理信道DPCH或共享信息信道HS-SICH的上行时间提前量。In addition, the present invention further provides an uplink synchronization control method in a TD-SCDMA system for HSDPA services. The terminal responds to the synchronization offset command word sent by the base station, and configures the uplink associated with the dedicated physical channel DPCH or the shared information channel HS-SICH. Timing advance.
优选的,如果只有伴随DPCH,则所述同步偏移命令字是按照伴随DPCH的信道冲激响应产生的。Preferably, if there is only accompanying DPCH, the synchronization offset command word is generated according to the channel impulse response accompanying DPCH.
优选的,如果只有HS-SICH,则所述同步偏移命令字是按照HS-SICH的信道冲激响应产生的。Preferably, if there is only HS-SICH, the synchronization offset command word is generated according to the channel impulse response of HS-SICH.
优选的,如果同时有伴随DPCH和HS-SICH,则所述同步偏移命令字是按照DPCH或HS-SICH的信噪比大的信道冲激响应产生的;或者按照DPCH或HS-SICH的接收信号功率码大的信道冲激响应产生的。Preferably, if there are accompanying DPCH and HS-SICH at the same time, the synchronization offset command word is generated according to the channel impulse response with a large signal-to-noise ratio of DPCH or HS-SICH; or according to the reception of DPCH or HS-SICH The channel impulse response of the signal power code is large.
优选的,按照如下步骤为DPCH和HS-SICH配置上行时间提前量:Preferably, the uplink timing advance is configured for DPCH and HS-SICH according to the following steps:
判断伴随DPCH和HS-SICH所在时隙及其对应的信道估计窗个数是否相同,如果HS-SICH和伴随DPCH在同一个上行时隙,或者不在同一个上行时隙但是两者所在时隙的信道估计窗个数相同,则HS-SICH的上行时间提前量配置为伴随DPCH的时间提前量;Judging whether the time slots of the accompanying DPCH and HS-SICH and the corresponding channel estimation windows are the same, if the HS-SICH and the accompanying DPCH are in the same uplink time slot, or not in the same uplink time slot but the time slots where the two are located If the number of channel estimation windows is the same, the uplink timing advance of HS-SICH is configured as the timing advance of DPCH;
如果HS-SICH和伴随DPCH不在同一个上行时隙并且两者所在时隙的信道估计窗个数不同,则将HS-SICH的时间提前量配置为伴随DPCH的时间提前量增加相应的偏移值。If the HS-SICH and the accompanying DPCH are not in the same uplink time slot and the number of channel estimation windows of the time slots where the two are located is different, then configure the timing advance of the HS-SICH to increase the corresponding offset value to the timing advance of the accompanying DPCH .
优选的,所述偏移值是伴随DPCH所在上行时隙的Cir时隙目标值与HS-SICH所在上行时隙的Cir时隙目标值之差。Preferably, the offset value is the difference between the target Cir time slot value of the uplink time slot where the DPCH is located and the target Cir time slot value of the uplink time slot where the HS-SICH is located.
一种TD-SCDMA系统中的上行同步控制装置,包括:An uplink synchronization control device in a TD-SCDMA system, comprising:
第二判断单元,用于响应基站发送的同步偏移命令字,判断伴随DPCH和HS-SICH所在时隙及其对应的信道估计窗个数是否相同;The second judging unit is used to respond to the synchronization offset command word sent by the base station, and judge whether the time slots of the accompanying DPCH and the HS-SICH and the corresponding channel estimation windows are the same;
第二配置单元,用于根据判断单元的判断结果,配置伴随专用物理信道DPCH或共享信息信道HS-SICH的上行时间提前量。The second configuring unit is configured to configure the uplink timing advance accompanying the dedicated physical channel DPCH or the shared information channel HS-SICH according to the judging result of the judging unit.
优选的,在只有伴随DPCH的情况下,所述同步偏移命令字是基站按照伴随DPCH的信道冲激响应产生的。Preferably, in the case of only accompanying DPCH, the synchronization offset command word is generated by the base station according to the channel impulse response accompanying DPCH.
优选的,在只有HS-SICH的情况下,所述同步偏移命令字是基站按照HS-SICH的信道冲激响应产生的。Preferably, in the case of only HS-SICH, the synchronization offset command word is generated by the base station according to the channel impulse response of HS-SICH.
优选的,在同时有伴随DPCH和HS-SICH的情况下,所述同步偏移命令字是基站按照DPCH或HS-SICH的信噪比大的信道冲激响应产生的。Preferably, in the case of simultaneous DPCH and HS-SICH, the synchronization offset command word is generated by the base station according to the channel impulse response of DPCH or HS-SICH with a large signal-to-noise ratio.
优选的,在同时有伴随DPCH和HS-SICH的情况下,所述同步偏移命令字是基站按照DPCH或HS-SICH的接收信号功率码大的信道冲激响应产生的。Preferably, in the case of accompanying DPCH and HS-SICH at the same time, the synchronization offset command word is generated by the base station according to a channel impulse response with a large received signal power code of DPCH or HS-SICH.
优选的,所述第二配置单元按照如下方式为DPCH和HS-SICH配置上行时间提前量:Preferably, the second configuration unit configures the uplink timing advance for DPCH and HS-SICH in the following manner:
所述第二判断单元判断HS-SICH和伴随DPCH在同一个上行时隙,或者不在同一个上行时隙但是两者所在时隙的信道估计窗个数相同,则所述第二配置单元将HS-SICH的上行时间提前量配置为伴随DPCH的时间提前量;The second judging unit judges that the HS-SICH and the accompanying DPCH are in the same uplink time slot, or not in the same uplink time slot but the number of channel estimation windows of the time slots where the two are located is the same, then the second configuration unit sets the HS-SICH -The uplink timing advance of SICH is configured as the timing advance of DPCH;
所述第二判断单元判断HS-SICH和伴随DPCH不在同一个上行时隙并且两者所在时隙的信道估计窗个数不同,则所述第二配置单元将HS-SICH的时间提前量配置为伴随DPCH的时间提前量增加相应的偏移值。The second judgment unit judges that the HS-SICH and the accompanying DPCH are not in the same uplink time slot and the number of channel estimation windows of the time slots where the two are located is different, then the second configuration unit configures the timing advance of the HS-SICH as The timing advance of the accompanying DPCH is increased by a corresponding offset value.
优选的,所述偏移值是伴随DPCH所在上行时隙的Cir时隙目标值与HS-SICH所在上行时隙的Cir时隙目标值之差。Preferably, the offset value is the difference between the target Cir time slot value of the uplink time slot where the DPCH is located and the target Cir time slot value of the uplink time slot where the HS-SICH is located.
与现有技术相比,本发明提供的技术方案具有如下有益效果:Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:
1、多时隙业务每个上行时隙独立控制,与现有多时隙业务相比,本发明通过在上行多时隙业务中,终端根据基站按照信号最好的时隙的信道冲激响应产生的同步偏移命令字,为每个上行时隙时间提前量参照第一个上行时隙时间提前量进行配置,从而可以提高上行多时隙业务的上行同步控制频率,也解决了上行多时隙业务上行时间提前量配置不准确的问题,减小了同一上行时隙信道间的相互干扰。1. Each uplink time slot of the multi-slot service is independently controlled. Compared with the existing multi-slot service, the present invention realizes the synchronization generated by the terminal according to the channel impulse response of the time slot with the best signal in the uplink multi-slot service. Offset command word, the time advance of each uplink time slot is configured with reference to the time advance of the first uplink time slot, so that the uplink synchronization control frequency of the uplink multi-slot service can be improved, and the uplink time advance of the uplink multi-slot service can also be solved The problem of inaccurate volume configuration reduces the mutual interference between channels in the same uplink time slot.
2、此外,本发明也解决了HSDPA业务中HS-SICH上行时间提前量算法复杂并且配置不准确的问题,从而提高了HS-SICH和伴随DPCH的上行同步控制频率,减小了同一上行时隙信道间的相互干扰。2. In addition, the present invention also solves the problem that the HS-SICH uplink time advance algorithm is complicated and the configuration is inaccurate in the HSDPA service, thereby improving the uplink synchronization control frequency of the HS-SICH and accompanying DPCH, and reducing the same uplink time slot Interference between channels.
下面结合附图和具体实施方式对本发明作进一步描述。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
附图说明 Description of drawings
图1是本发明上行多时隙业务基站上行同步控制流程图;Fig. 1 is the uplink synchronization control flow chart of the uplink multi-slot service base station of the present invention;
图2是本发明上行多时隙业务终端上行同步控制流程图;Fig. 2 is a flow chart of uplink synchronization control of an uplink multi-slot service terminal in the present invention;
图3是本发明HSDPA业务基站上行同步控制流程图;Fig. 3 is the flow chart of uplink synchronization control of the HSDPA service base station of the present invention;
图4是本发明HSDPA业务终端上行同步控制流程图;Fig. 4 is the flow chart of the uplink synchronization control of the HSDPA service terminal of the present invention;
图5是本发明上行多时隙业务上行同步控制装置框图;Fig. 5 is a block diagram of an uplink synchronization control device for an uplink multi-slot service according to the present invention;
图6是本发明HSDPA业务上行同步控制装置框图。Fig. 6 is a block diagram of an HSDPA service uplink synchronization control device according to the present invention.
具体实施方式 Detailed ways
本发明用于解决TD-SCDMA系统中,上行多时隙业务或者HSDPA业务,终端配置DPCH和SICH上行时间提前量实现复杂、容易出错、调整频率较低的问题。下面通过具体实施例加以详细说明。The invention is used to solve the problems of complicated realization of uplink timing advance of terminal configuration of DPCH and SICH in uplink multi-slot service or HSDPA service in TD-SCDMA system, error-prone and low adjustment frequency. The following will be described in detail through specific embodiments.
对于上行多时隙业务,分别从基站和终端两个角度说明上行同步控制过程。For the uplink multi-slot service, the uplink synchronization control process is described from the perspectives of the base station and the terminal.
如图1所示,上行多时隙业务基站上行同步控制过程如下:As shown in Figure 1, the uplink synchronization control process of the uplink multi-slot service base station is as follows:
步骤101、基站建立上行多时隙业务;Step 101, the base station establishes an uplink multi-slot service;
步骤102、基站根据所有上行时隙的信噪比(SNR,Signal to Noise Ratio)或者接收的信号功率码(RSCP,received signal code power)选择一个上行信号最好的时隙,通常SNR或者RSCP较大的上行信号较好;然后按照该上行时隙的信道冲激响应来产生SS命令字;Step 102, the base station selects a time slot with the best uplink signal according to the signal-to-noise ratio (SNR, Signal to Noise Ratio) or received signal power code (RSCP, received signal code power) of all uplink time slots, usually SNR or RSCP A large uplink signal is better; then generate the SS command word according to the channel impulse response of the uplink time slot;
步骤103、基站通过DPCH发送产生的SS命令字。Step 103, the base station sends the generated SS command word through the DPCH.
如图2所示,上行多时隙业务终端上行同步控制过程如下:As shown in Figure 2, the uplink synchronization control process of the uplink multi-slot service terminal is as follows:
步骤201、终端建立上行多时隙业务;
步骤202、终端每个子帧响应基站通过DPCH发送的SS命令字;
步骤203、判断不同时隙的midamble_k(信道估计窗个数,即128chip的中间码分为几个信道估计窗)是否相同,如果相同则转入步骤204;如果不同则转入步骤205;
步骤204、如果不同时隙的midamble_k相同,则各个时隙上行时间提前量配置为第一个上行时隙的时间提前量;
步骤205、如果不同时隙midamble_k不同,则配置第n个上行时隙时间提前量为:
TAn=TA1+(Cir_target(1)-Cir_target(n))TAn=TA1+(Cir_target(1)-Cir_target(n))
其中:TA1表示第一个上行时隙的时间提前量,TAn表示第n个上行时隙的时间提前量,Cir_target(n)表示第n个上行时隙的信道冲激响应(Cir)时隙目标值。Among them: TA1 represents the timing advance of the first uplink time slot, TAn represents the time advance of the nth uplink time slot, and Cir_target(n) represents the channel impulse response (Cir) time slot target of the nth uplink time slot value.
步骤206、终端按照相应的方式实现时间提前量的配置。In
如图5所示,在终端侧上行同步控制装置包括:第一判断单元51、及第一配置单元52,其中:As shown in FIG. 5, the device for uplink synchronization control on the terminal side includes: a
由所述第一判断单元51判断不同时隙的midamble_k是否相同,如果相同则将该判断结果反馈给第一配置单元52,将各个时隙上行时间提前量配置为第一个上行时隙的时间提前量;如果不同时隙midamble_k不同,则将该判断结果反馈给第一配置单元52,配置第n个上行时隙时间提前量为:Whether the midamble_k of different time slots is judged by the
TAn=TA1+(Cir_target(1)-Cir_target(n))TAn=TA1+(Cir_target(1)-Cir_target(n))
其中:TA1表示第一个上行时隙的时间提前量,TAn表示第n个上行时隙的时间提前量,Cir_target(n)表示第n个上行时隙的信道冲激响应(Cir)时隙目标值。Among them: TA1 represents the timing advance of the first uplink time slot, TAn represents the time advance of the nth uplink time slot, and Cir_target(n) represents the channel impulse response (Cir) time slot target of the nth uplink time slot value.
需要说明的是:It should be noted:
第n个上行时隙信道估计窗的长度可以由下面的公式得到:The length of the channel estimation window of the nth uplink time slot can be obtained by the following formula:
其中:函数为向下取整;where: function is rounded down;
第n上行时隙CIR目标值为:The CIR target value of the nth uplink time slot is:
其中:函数为向上取整。where: function is rounded up.
比如:如果midamble_k=8,则计算得到Cir_target=6chip;For example: if midamble_k=8, then calculate Cir_target=6chip;
如果midamble_k=16,则Cir_target=3chip。If midamble_k=16, then Cir_target=3chip.
此外,针对HSDPA业务,分别从基站和终端两个角度说明上行同步控制过程。In addition, for the HSDPA service, the uplink synchronization control process is described from the perspectives of the base station and the terminal.
如图3所示,HSDPA业务基站上行同步控制过程如下:As shown in Figure 3, the uplink synchronization control process of the HSDPA service base station is as follows:
步骤301、基站建立HSDPA业务;
步骤302、在HSDPA业务中,基站结合伴随DPCH和HS-SICH的信道冲激响应产生SS命令字,具体分为如下三种情况:
如果某子帧上行只有伴随DPCH,则根据伴随DPCH的信道冲激响应产生SS命令字;If the uplink of a certain subframe is only accompanied by DPCH, then generate the SS command word according to the channel impulse response accompanied by DPCH;
如果某子帧上行只有HS-SICH,则按照HS-SICH的信道冲激响应产生SS命令字;If there is only HS-SICH uplink in a certain subframe, generate the SS command word according to the channel impulse response of HS-SICH;
如果某子帧上行既有伴随DPCH又有HS-SICH,则须择一个SNR或者RSCP高的信道,根据该信道的信道冲激响应产生SS命令字;If a subframe has both DPCH and HS-SICH uplink, a channel with a high SNR or RSCP must be selected, and the SS command word is generated according to the channel impulse response of the channel;
步骤303、基站在随后的下行伴随DPCH或者HS-SCCH中发送步骤302中产生的SS命令字。
如图4所示,HSDPA业务终端上行同步控制过程如下:As shown in Figure 4, the uplink synchronization control process of the HSDPA service terminal is as follows:
步骤401、终端建立HSDPA业务;
步骤402、终端结合伴随DPCH和HS-SCCH的SS命令字来调整伴随DPCH和HS-SICH的时间提前量,对应于基站产生SS命令字的三种情况分别如下:
如果某子帧下行只有伴随DPCH,则按照伴随DPCH的SS命令字调整时间提前量;If the downlink of a certain subframe is only accompanied by DPCH, adjust the timing advance according to the SS command word accompanied by DPCH;
如果只有HS-SCCH,则按照HS-SCCH携带的SS命令字调整时间提前量;If there is only HS-SCCH, adjust the timing advance according to the SS command word carried by HS-SCCH;
如果某子帧既有伴随DPCH又有HS-SCCH,则根据两个SS命令字的软判决结果来调整时间提前量,这样可以提高伴随DPCH和HS-SICH的同步控制频率;If a certain subframe has both accompanying DPCH and HS-SCCH, adjust the timing advance according to the soft decision results of the two SS command words, which can increase the synchronization control frequency accompanying DPCH and HS-SICH;
步骤403、判断HS-SICH和伴随DPCH所在时隙的midamble_k是否相同:
如果HS-SICH和伴随DPCH在同一个上行时隙或者不在同一个上行时隙,但是HS-SICH和伴随DPCH所在时隙的midamble_k相同,则转入步骤404;If the HS-SICH and the accompanying DPCH are in the same uplink time slot or not in the same uplink time slot, but the midamble_k of the time slot where the HS-SICH and the accompanying DPCH are located are the same, go to step 404;
如果HS-SICH和伴随DPCH不在同一个上行时隙并且这两个时隙时隙midamble_k不同,则转入步骤405;If the HS-SICH and the accompanying DPCH are not in the same uplink time slot and the midamble_k of the two time slots is different, then go to step 405;
步骤404、HS-SICH的上行时间提前量配置为伴随DPCH的时间提前量;
步骤405、配置SICH时间提前量为:
TASICH=TADPCH+(Cir_target(DPCH)-Cir_target(SICH))TA SICH = TA DPCH + (Cir_target(DPCH)-Cir_target(SICH))
其中:TASICH表示HS-SICH的时间提前量,TADPCH表示伴随DPCH的时间提前量,Cir_target(DPCH)表示伴随DPCH所在上行时隙的Cir时隙目标值,Cir_target(SICH)表示HS-SICH所在上行时隙的Cir时隙目标值。Among them: TA SICH represents the timing advance of HS-SICH, TA DPCH represents the timing advance of accompanying DPCH, Cir_target(DPCH) represents the Cir time slot target value of the uplink time slot accompanying DPCH, Cir_target(SICH) represents the location of HS-SICH Cir slot target value of the uplink slot.
如图6所示,在终端侧上行同步控制装置包括:第二判断单元61、及第二配置单元62,其中:As shown in FIG. 6, the device for uplink synchronization control on the terminal side includes: a
第二判断单元61响应基站发送的同步偏移命令字,如果某子帧下行只有伴随DPCH,则按照伴随DPCH的SS命令字调整时间提前量;如果只有HS-SCCH,则按照HS-SCCH携带的SS命令字调整时间提前量;如果某子帧既有伴随DPCH又有HS-SCCH,则根据两个SS命令字的软判决结果来调整时间提前量,这样可以提高伴随DPCH和HS-SICH的同步控制频率;The
以及判断HS-SICH和伴随DPCH所在时隙的midamble_k是否相同:And judge whether the midamble_k of the time slot where the HS-SICH and the accompanying DPCH are located are the same:
如果HS-SICH和伴随DPCH在同一个上行时隙或者不在同一个上行时隙,但是HS-SICH和伴随DPCH所在时隙的midamble_k相同,则HS-SICH的上行时间提前量配置为伴随DPCH的时间提前量;If the HS-SICH and the accompanying DPCH are in the same uplink time slot or not in the same uplink time slot, but the midamble_k of the time slot where the HS-SICH and the accompanying DPCH are located are the same, the uplink timing advance of the HS-SICH is configured as the time of the accompanying DPCH advance amount;
如果HS-SICH和伴随DPCH不在同一个上行时隙并且这两个时隙时隙midamble_k不同,则配置SICH时间提前量为:If the HS-SICH and accompanying DPCH are not in the same uplink time slot and the midamble_k of the two time slots is different, configure the SICH timing advance as:
TASICH=TADPCH+(Cir_target(DPCH)-Cir_target(SICH))TA SICH = TA DPCH + (Cir_target(DPCH)-Cir_target(SICH))
其中:TASICH表示HS-SICH的时间提前量,TADPCH表示伴随DPCH的时间提前量,Cir_target(DPCH)表示伴随DPCH所在上行时隙的Cir时隙目标值,Cir_target(SICH)表示HS-SICH所在上行时隙的Cir时隙目标值。Among them: TA SICH represents the timing advance of HS-SICH, TA DPCH represents the timing advance of accompanying DPCH, Cir_target(DPCH) represents the Cir time slot target value of the uplink time slot accompanying DPCH, Cir_target(SICH) represents the location of HS-SICH Cir slot target value of the uplink slot.
以上所述的本发明实施方式,并不构成对本发明保护范围的限定。任何在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的权利要求保护范围之内。The embodiments of the present invention described above are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105568A1 (en) * | 2009-03-17 | 2010-09-23 | 松下电器产业株式会社 | Method and device for adjusting timing advance in uplink multiple points reception |
| WO2010145158A1 (en) * | 2009-06-30 | 2010-12-23 | 中兴通讯股份有限公司 | Method and device for uplink synchronization control |
| CN101674658B (en) * | 2008-09-12 | 2011-11-30 | 中兴通讯股份有限公司 | Application method of space division multiplexing of high-speed downlink packet access system |
| CN101594672B (en) * | 2008-05-30 | 2012-02-01 | 电信科学技术研究院 | Method, system and device for maintaining uplink synchronization and method for sending data |
| WO2015176320A1 (en) * | 2014-05-23 | 2015-11-26 | 华为技术有限公司 | Information transmission method, base station and user equipment |
| CN107079478A (en) * | 2014-11-07 | 2017-08-18 | 高通股份有限公司 | Uplink Control Resource Allocation for Dynamic Time Division Duplex Systems |
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| CN1744463A (en) * | 2004-08-31 | 2006-03-08 | 西门子(中国)有限公司 | Up closed ring synchronous control method in time division-synchronous CDMA accessing system |
| CN100440761C (en) * | 2005-11-03 | 2008-12-03 | 中兴通讯股份有限公司 | Uplink synchronization configuration and processing method of high-speed shared information channel |
| CN100388807C (en) * | 2005-11-16 | 2008-05-14 | 中兴通讯股份有限公司 | Closed-loop uplink synchronization control method in wireless communication system |
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| CN101594672B (en) * | 2008-05-30 | 2012-02-01 | 电信科学技术研究院 | Method, system and device for maintaining uplink synchronization and method for sending data |
| CN101674658B (en) * | 2008-09-12 | 2011-11-30 | 中兴通讯股份有限公司 | Application method of space division multiplexing of high-speed downlink packet access system |
| WO2010105568A1 (en) * | 2009-03-17 | 2010-09-23 | 松下电器产业株式会社 | Method and device for adjusting timing advance in uplink multiple points reception |
| CN102356678A (en) * | 2009-03-17 | 2012-02-15 | 松下电器产业株式会社 | Method and device for adjusting timing advance in uplink multiple points reception |
| WO2010145158A1 (en) * | 2009-06-30 | 2010-12-23 | 中兴通讯股份有限公司 | Method and device for uplink synchronization control |
| CN101938826A (en) * | 2009-06-30 | 2011-01-05 | 中兴通讯股份有限公司 | Uplink synchronization control method and device for long term evolution system |
| WO2015176320A1 (en) * | 2014-05-23 | 2015-11-26 | 华为技术有限公司 | Information transmission method, base station and user equipment |
| US9907102B2 (en) | 2014-05-23 | 2018-02-27 | Huawei Technologies Co., Ltd. | Method for transmitting information, base station, and user equipment |
| CN107079478A (en) * | 2014-11-07 | 2017-08-18 | 高通股份有限公司 | Uplink Control Resource Allocation for Dynamic Time Division Duplex Systems |
| US11153898B2 (en) | 2014-11-07 | 2021-10-19 | Qualcomm Incorporated | Uplink control resource allocation for dynamic time-division duplex systems |
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