CN101527916A - Method for multiplexing control channel of relay station in orthogonal frequency division multiplexing system - Google Patents

Method for multiplexing control channel of relay station in orthogonal frequency division multiplexing system Download PDF

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Publication number
CN101527916A
CN101527916A CN 200810082751 CN200810082751A CN101527916A CN 101527916 A CN101527916 A CN 101527916A CN 200810082751 CN200810082751 CN 200810082751 CN 200810082751 A CN200810082751 A CN 200810082751A CN 101527916 A CN101527916 A CN 101527916A
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China
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rs
mode
control channel
tdm
downlink control
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CN 200810082751
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Chinese (zh)
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峰 毕
明 袁
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中兴通讯股份有限公司
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Publication of CN101527916A publication Critical patent/CN101527916A/en

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    • 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
    • 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, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal devices adapted for relaying to or from another terminal or user

Abstract

The invention relates to a method for multiplexing a control channel of a relay station in an orthogonal frequency division multiplexing system, which is suitable for a 3GPP long-term evolution system and an ultra 3G system IMT-advanced. The method comprises the following steps that: when the relay station (RS) is a non-transparent RS, downlink control information and data services among a base station (BS), the non-transparent RS and a user terminal (UT) are sent out on a downlink control channel in a frequency division multiplexing (FDM) mode, a time division multiplexing (TDM) mode or a hybrid division multiplexing (HDM) mode, and the HDM mode is a multiplexing mode combining the TDM and the FDM; and when the RS in the system is a transparent RS, the downlink control information between the BS and the transparent RS as well as the downlink control information and the data services between the BS and the UT are sent out on the downlink control channel in the FDM mode, the TDM mode or the HDM mode.

Description

在正交频分复用系统中存在中继站时控制信道的复用方法技术领域 BACKGROUND presence of control channel multiplexing method of the relay station in an orthogonal frequency division multiplexing system

本发明涉及移动通讯领域,特别涉及3GPP长期演进(LTE)系统中下行控制信道的复用方法。 The present invention relates to mobile communications, and more particularly relates to a method of multiplexing the downlink 3GPP long term evolution (LTE) system the control channel.

背景技术 Background technique

在OFDM ( Orthogonal Frequency Division Multiplexing,正交频分复用) 系统中,由于是时频两维的数据形式,所以控制信道与业务信道之间的复用形式可以是时间方向上和频率方向上,即采用TDM (Time Division Multiplex,时分复用)方式和FDM (Frequency Division Multiplex,频分复用)方式。 In OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) system, since the data is in the form of two-dimensional time-frequency, so that a multiplexed form between the channel and the traffic channel may be a time direction and frequency direction, i.e. using TDM (Time division multiplex, time division multiplexing) scheme and FDM (frequency division multiplex, frequency division multiplexing) scheme.

在LTE系统中,充分考虑UT (User Terminal,用户终端)端的省电问题,需要UT进入micro sleep (微睡眠)模式,则最终BS (基站)下发的控制信息釆用TDM方式。 In the LTE system, fully consider the power problem UT (User Terminal, the user terminal) terminal, UT needs to enter micro sleep (micro-sleep) mode, the finally delivered by the BS (Base Station) control information preclude the use of a TDM fashion. 例如在一个子帧中,包括14个OFDM符号,如果此时控制信道采用TDM方式,即占用前N个OFDM符号。 For example, in one subframe includes 14 OFDM symbols, if the front case TDM mode channel, i.e. occupies N number of OFDM symbols. UT监听控制信道,如果监听到自己的ID (Identity,标识),则继续接收业务信道并进行解调;如果没有监听到自己的ID,则进入micro sleep模式。 UT monitor the control channel, if the listener to his ID (Identity, identification), then continues to receive and demodulates the traffic channel; if not hear its own ID, the process proceeds micro sleep mode.

目前,对于控制信道复用的研究是一个热点,但是,当OFDM系统中存在RS (Relay Station,中继站)时,下行控制信道复用方式的研究较少, 目前的系统都是采用TDM方式,但TDM方式不能很好的适合有RS (包括透明RS和非透明RS )的系统,而此缺点正是该发明要解决的问题。 Currently, research is a control channel multiplexed hot, however, when there is RS (Relay Station, a relay station) the OFDM system, few studies downlink control channel multiplexing mode, the current systems are TDM mode, but TDM manner not well suitable for RS (RS including transparent and non-transparent RS) system, the invention this disadvantage is the problem to be solved.

发明内容 SUMMARY

本发明所要解决的技术问题在于提供一种在正交频分复用系统中存在中继站时控制信道的复用方法,可以适用于带有中继站的演进OFDM系统。 The present invention solves the technical problem is to provide a method of orthogonal frequency-division multiplexing the control channel in the presence of the relay station multiplexing system, evolution may be applied to an OFDM system with a relay station. 为了解决上迷技术问题,本发明提供了一种在正交频分复用系统中存在 In order to solve the above-technical problem, the present invention provides an orthogonal frequency division multiplexing system is present

中继站时控制信道的复用方法,适用于3GPP长期演进系统和超3G系统IMT-Advanced,包4舌: When the relay station control channel multiplexing method, applicable to 3GPP LTE system and a super 3G system IMT-Advanced, tongue package 4:

当系统中的中继站RS为非透明RS时,基站BS、非透明RS与用户终端UT之间的下行控制信息及数据业务采用频分复用方式FDM或时分复用方式TDM或混分复用方式HDM在下行控制信道上发送,所述HDM方式为TDM与FDM相结合的复用方式; When the system is non-transparent relay station RS RS, the base station BS, a non-transparent RS and downlink between the user terminal UT traffic control information and data using frequency division multiplexing or time division multiplexing TDM or FDM mixed division multiplexing HDM is sent on the downlink control channel, the HDM multiplexing scheme is a TDM manner with a combination of FDM;

当系统中的RS为透明RS时,BS与透明RS之间的下行控制信息以及BS与UT之间的下行控制信息和数据业务采用FDM复用方式或TDM复用方式或HDM复用方式在下行控制信道上发送。 When the system is transparent RS in RS, the downlink control information and the downlink between the BS and between the BS and the UT transparent RS control information and data traffic using FDM or TDM multiplexing manner mode or multiplexing downlink multiplexing manner HDM sent on the control channel.

进一步地,当接收方有微睡眠模式时,发送下行控制信道的一方采用TDM复用方式发送下行控制信息和/或数据业务。 Further, when the recipient has a micro-sleep mode, transmitting one of the TDM downlink control channel multiplexing send downlink control information and / or data traffic.

进一步地,当所述RS为非透明RS时,BS与非透明RS之间的下行控制信道采用FDM方式或HDM方式。 Further, when the non-transparent RS RS, downlink control channel between the BS and RS employ a non-transparent manner or HDM FDM mode.

进一步地,当所述RS为非透明RS时,非透明RS与UT之间的下行控制信道采用TDM方式。 Further, when the non-transparent RS RS, downlink control channel between the UT and the non-transparent RS TDM mode.

进一步地,所述BS与UT之间的下行控制信道采用TDM方式。 Further, the downlink control channel between the BS and the UT TDM mode.

进一步地,当所述RS为透明RS时,BS与透明RS之间的下行控制信道采用TDM方式。 Further, when the RS is transparent RS, downlink control channel between the BS and the RS transparent TDM mode.

进一步地,当所述RS为透明RS时,BS与UT之间的下行控制信道采用TDM方式。 Further, when the RS is transparent RS, downlink control channel between the BS and the UT TDM mode.

进一步地,所述FDM方式或HDM方式传输时釆用子载波跳频方式。 Further, the FDM system or preclude the use of HDM mode hopping mode sub-carrier transmission.

采用本发明所述方法,与现有技术相比,控制信道复用简单,可以针对RS存在时TDM方式不能很好适用的问题。 Using the method of the invention, compared to the prior art, with a simple control channel multiplexing, may not be well suited for the problem exists when RS TDM manner. 本发明所述HDM方式既保证了非透明RS的覆盖范围及频率分集增益,也有利于透明RS和UT的micro sleep 。 HDM embodiment of the present invention not only ensures the micro sleep coverage and non-transparent RS frequency diversity gain, but also conducive to a transparent RS and the UT. 附图说明 BRIEF DESCRIPTION

图1是FDM方式示意图。 1 is a schematic FDM scheme.

图2是FDM方式跳频示意图。 FIG 2 is a schematic FDM mode hopping.

图3是TDM方式示意图。 3 is a schematic TDM manner.

图4是TDM+FDM方式示意图。 4 is a schematic TDM + FDM manner.

图5是TDM+FDM方式跳频示意图。 FIG 5 is a schematic diagram of the frequency hopping TDM + FDM manner.

具体实施方式 Detailed ways

本发明特别适用于带有RS的LTE ( 3GPP长期演进系统)和IMT-Advanced (超3G系统)。 The present invention is particularly applicable to the RS with LTE (3GPP Long Term Evolution) and IMT-Advanced (Super 3G system).

在引入RS之后,BS与RS之间以及RS与UT之间的传输方式需要重新考虑,主要是根据接收端的需求,例如对于可靠性的需求或者是否需要考虑省电等。 After the introduction of RS, transmission between the BS and the RS and between the RS and the UT needs to be reconsidered, mainly based on the needs of the receiving end, for example, reliability requirements, or need to consider power-saving. 如果下行控制信道采用FDM方式(如图1、 2所示)可以获得频率分集增益,即可以把控制信息分配到不同符号的不同的子载波上,从而可以提高控制信道的可靠性;如果采用TDM方式(如图3所示)则会有利于micro sleep模式,即接收端可以获得较好的省电效果。 If the downlink control channel using FDM scheme (1, 2) a frequency diversity gain can be obtained, i.e., the control information can be assigned to different subcarriers in different symbol, thereby improving the reliability of the control channel; if TDM embodiment (FIG. 3) will facilitate the micro sleep mode, i.e., the receiving end can obtain a good power-saving effect. 另外,本发明在现有TDM和FDM方式的基础上还利用了一种新的传输方式HDM (Hybrid Division Multiplex,混分复用)方式(如图4、 5所示),即TDM和FDM 相结合的方式,HDM方式较TDM方式也能获得更好的频率分集增益。 Further, the present invention is based on the existing FDM and TDM manner on the further use of a new transport HDM (Hybrid Division Multiplex, mixed division multiplexing) system (4, 5), i.e. with TDM and FDM a combination of, HDM TDM manner than the embodiment can obtain better frequency diversity gain. 图1 至图5中,,表示导频(Pilot),圏表示控制信息(control) , 口表示数据业务(data)。 1 to 5 ,, indicates the pilot (Pilot), rings of a control information (control), data representing the port traffic (data).

在引入RS后,根据RS的类型不同,考虑到RS的帧结构以及不同RS 的特性,控制信道的复用方式也是不同的,主要是根据接收端的需求而定, 具体说明如下: After the introduction of RS, RS is different depending on the type, taking into account the frame structure of the RS and RS characteristics of different control channel multiplexing mode is different, mainly based on the receiving end needs, and specifically as follows:

在非透明RS时,下行控制信息与数据业务都须通过RS传输到UT。 When a non-transparent RS, downlink control information and traffic data are transmitted to the UT must RS. 非透明RS —般不会进入micro sleep模式,RS时刻接收控制信息和业务数据。 Non-transparent RS - generally does not enter the micro sleep mode, RS receives the timing control information and traffic data. 为了更好的调整控制信息的覆盖能力及频率分集增益,在下行RS时隙,BS 下发给RS的控制信息采用FDM或TDM+FDM形式,BS利用下行RS时隙下发到RS, RS接收到完整的时隙后进行解码处理,之后把控制信息按照TDM的方式再下发到UT。 In order to better coverage and adjust the control frequency diversity gain information, control information addressed to the RS in the downlink slot RS, the BS using FDM or TDM + FDM form, made using the BS to the RS the downlink slot RS, RS received time slots after the complete decoding process followed by control information according to TDM manner and then issued to the UT. 而对于BS能覆盖到的UT,直接把控制信息按照TDM的方式下发到UT。 For BS can cover the UT, directly under the control information in the TDM manner sent to the UT. 具体地:控制信息的传输可以采用如下方案: Specifically: transmission control information may be regarded as follows:

* BS—>RS下行控制信道的传输优选采用FDM或TDM+FDM,也可是TDM; * BS-> RS downlink control channel transmission or FDM is preferable to use TDM + FDM, but also the TDM;

由于无需考虑RS的省电问题,优选采用FDM或TDM+FDM进行传输。 Since the RS is unnecessary to consider the issue of power, preferably using FDM or TDM + FDM transmission. 采用FDM方式时可以采用如图1所示的子载波映射方式,采用TDM+FDM 方式时可以采用如图4所示的子载波映射方式,图中圏表示导频(Pilot), When using the FDM system may be employed subcarrier mapping shown in FIG. 1, using TDM + FDM may employ subcarrier mapping shown in FIG. 4, it represents the rings of FIG pilot (Pilot),

表示控制信息(control) , U表示数据业务(data)。 Represents control information (control), U represents data traffic (data).

* RS-->UT下行控制信道的传输优选采用TDM,也可是FDM或TDM+FDM; * RS -> UT transmission of the downlink control channel is preferably used TDM, FDM, or may also be a TDM + FDM;

考虑到UT的省电问题,因此RS与UT的下行控制信道优选釆用TDM 方式。 Considering the problem of saving the UT, the UT and thus RS preclude the use of the downlink control channel is preferably TDM manner.

* BS->UT下行控制信息的传输优选采用TDM,也可是FDM或TDM+FDM; * BS-> UT downlink transmission of control information is preferable to use TDM, FDM, or may also be a TDM + FDM;

同样,考虑到接收方UT的省电问题,BS与UT下行控制信道优选采用TDM的方式。 Similarly, considering the power receiving side issues a UT, UT downlink control channel with the BS preferably uses TDM manner.

可见,当UT作为接收端时,与UT直接通信的控制信道都优选采用TDM 方式。 Visible, as the receiving end when UT, UT are in direct communication with the control channel is preferably TDM mode.

在透明RS时,只有数据业务可以通过RS传输到UT。 When the transparent RS, only the data traffic may be transmitted to the UT RS. 所以透明RS需要充分考虑micro sleep模式,尤其是移动RS电池能力有限。 RS needs to fully consider it a transparent micro sleep mode, a mobile RS particularly limited battery capacity. 也就是说RS 的micro sleep才莫式4又<又用于透明RS, BS可以激活RS进入micro sle印,RS micro sleep模式和UT相同。 That is only the RS Micro Mo sleep and Formula 4 <and a transparent RS, BS RS may be activated into the micro sle printing, RS micro sleep mode and the same UT. BS下发控制信息到透明RS和UT采用的方式是相同的,即BS直接把控制信息按照TDM的方式下发到RS和UT。 Control information is sent to the transparent RS and the BS UT uses the same manner, i.e., directly to the BS according to the control information sent to the RS TDM manner and UT. 下行控制信息的传输可以采用如下方案: Transmitting downlink control information may be regarded as follows:

* BS->RS下行控制信道的传输优选采用TDM,也可是FDM或TDM+FDM;为了便于RS进入到micro sleep模式,因此BS与RS的下行控制信道优选采用TDM方式。 * BS-> RS downlink control channel transmissions preferably the TDM, FDM or TDM + but also FDM; RS for convenience into micro sleep mode, the BS and the RS downlink control channel is preferably TDM mode.

* BS->UT下行控制信息的传输优选采用TDM,也可是FDM或TDM+FDM; * BS-> UT downlink transmission of control information is preferable to use TDM, FDM, or may also be a TDM + FDM;

同样,考虑到UT的省电问题,BS与UT的下行控制信道优选采用TDM 方式。 Similarly, considering the problem of saving the UT, the UT and the BS downlink control channel is preferably TDM mode.

对于FDM或TDM+FDM方式的子载波映射可以是固定的,也可以是跳频产生子载波映射规则,例如图2和图5是经过跳频后的FDM方式和TDM+FDM方式,相对于定频而言,跳频后抗干扰能力更强,跳频技术可以采用现有跳频技术中的任何一种。 For subcarrier mapping FDM or TDM + FDM mode may be fixed, or may be generated hopping subcarrier mapping rule, for example, FIG. 2 and FIG. 5 is the result of the FDM scheme and frequency hopping TDM + FDM manner, with respect to a given frequency, the anti-interference ability after hopping, frequency hopping techniques can be employed any of a prior art frequency hopping.

当然,本发明还可有其他多种实施例,在不背离本发明精神及其实质的形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 Of course, the present invention may have many other embodiments without departing from the spirit and essence of the present invention is formed, these corresponding modifications and variations shall fall within the scope of the appended claims.

Claims (8)

1、在正交频分复用系统中存在中继站时控制信道的复用方法,适用于3GPP长期演进系统和超3G系统IMT-Advanced,其特征在于, 当系统中的中继站RS为非透明RS时,基站BS、非透明RS与用户终端UT之间的下行控制信息及数据业务采用频分复用方式FDM或时分复用方式TDM或混分复用方式HDM在下行控制信道上发送,所述HDM方式为TDM与FDM相结合的复用方式; 当系统中的RS为透明RS时,BS与透明RS之间的下行控制信息以及BS与UT之间的下行控制信息和数据业务采用FDM复用方式或TDM复用方式或HDM复用方式在下行控制信道上发送。 1, the control channel when the presence of orthogonal frequency division multiplexing system, the relay station multiplexing method suitable for 3GPP LTE system and a super 3G system IMT-Advanced, which is characterized in that, when the system is non-transparent relay station RS when the RS , the BS the base station, a non-transparent RS and downlink between the user terminal UT traffic control information and data using frequency division multiplexing or time division multiplexing TDM or FDM mixed division multiplexing on the downlink control channel sent HDM, the HDM TDM and FDM method is a combination of multiplexing mode; when the system is transparent RS in RS, the downlink control information and the downlink between the BS and between the BS and the UT transparent RS control information and data traffic using FDM multiplexing manner multiplexing or TDM mode or multiplexing manner HDM transmitted on a downlink control channel.
2、 如权利要求l所述的方法,其特征在于,当接收方有微睡眠模式时,发送下行控制信道的一方采用TDM复用方式发送下行控制信息和/或数据业务。 2. The method of claim l, wherein, when the recipient has a micro-sleep mode, transmitting one of the TDM downlink control channel multiplexing send downlink control information and / or data traffic.
3、 如权利要求l所述的方法,其特征在于,当所述RS为非透明RS时,BS与非透明RS之间的下行控制信道采用FDM方式或HDM方式。 3. The method of claim l, wherein, when the non-transparent RS RS, downlink control channel between the BS and RS employ a non-transparent manner or HDM FDM mode.
4、 如权利要求1或2或3所述的方法,其特征在于,当所述RS为非透明RS时,非透明RS与UT之间的下行控制信道采用TDM方式。 4. The method of claim 1 or claim 2 or claim 3, wherein, when the non-transparent RS RS, downlink control channel between the UT and the non-transparent RS TDM mode.
5、 如权利要求4所述的方法,其特征在于,所述BS与UT之间的下行控制信道采用TDM方式。 5. The method as claimed in claim 4, wherein the downlink control channel between the BS and the UT TDM mode.
6、 如权利要求1或2所述的方法,其特征在于,当所述RS为透明RS时,BS与透明RS之间的下行控制信道釆用TDM 方式。 6. A method as claimed in claim 1 or claim 2, wherein, when the RS is transparent RS, downlink control channel between the BS and the RS transparent preclude the use of a TDM fashion.
7、 如权利要求6所述的方法,其特征在于,当所述RS为透明RS时,BS与UT之间的下行控制信道采用TDM方式。 7. The method as claimed in claim 6, wherein, when the RS is transparent RS, downlink control channel between the BS and the UT TDM mode.
8、 如权利要求1或3所述的方法,其特征在于,所述FDM方式或HDM方式传输时采用子载波跳频方式。 8. A method as claimed in claim 13, characterized in that, when using subcarrier frequency hopping mode or the HDM FDM transmission mode.
CN 200810082751 2008-03-05 2008-03-05 Method for multiplexing control channel of relay station in orthogonal frequency division multiplexing system CN101527916A (en)

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Cited By (13)

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