WO2011038623A1 - 确定上行链路发射分集方式的方法、通信装置、终端和通信*** - Google Patents
确定上行链路发射分集方式的方法、通信装置、终端和通信*** Download PDFInfo
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- WO2011038623A1 WO2011038623A1 PCT/CN2010/076430 CN2010076430W WO2011038623A1 WO 2011038623 A1 WO2011038623 A1 WO 2011038623A1 CN 2010076430 W CN2010076430 W CN 2010076430W WO 2011038623 A1 WO2011038623 A1 WO 2011038623A1
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- WIPO (PCT)
- Prior art keywords
- transmit diversity
- diversity mode
- command
- mode
- uplink
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
Definitions
- the present invention relates to the field of wireless communication technologies, and in particular, to a method and a communication apparatus for determining an uplink transmit diversity mode. Background technique
- the uplink antenna transmit diversity technology can further utilize the spatial gain of transmit diversity to reduce the interference level in the cell without changing the uplink transmission rate, thereby expanding the uplink.
- the coverage of the link can further utilize the spatial gain of transmit diversity to reduce the interference level in the cell without changing the uplink transmission rate, thereby expanding the uplink.
- the uplink antenna transmit diversity mode includes an Open Loop Transmission Diversity (OLTD) mode and a Closed Loop Transmission Diversity (CLTD) mode.
- the open loop transmit diversity method includes an open loop antenna alternate selection transmission method and an open loop antenna traversal calculation beamforming method.
- Open-loop transmit diversity is a method used during slow fading cycles and does not effectively overcome fast fading.
- the closed-loop transmit diversity mode is based on the pre-coding control indicator (PCI) feedback of the fast fading period, and does not consider the slow fading scene.
- PCI pre-coding control indicator
- the two types of transmit diversity cannot be effectively combined, and the effective transmit diversity mode cannot be determined according to the actual situation. Summary of the invention
- Embodiments of the present invention provide a method, a communication device, a terminal, and a communication system for determining an uplink transmit diversity mode.
- a method for determining an uplink transmit diversity mode includes: transmitting an HS-SCCH command to a user equipment UE on a shared control channel HS-SCCH of a high speed dedicated shared channel, where the HS-SCCH command includes Command type information; the command type information indicates a transmit diversity mode of the uplink, and the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode.
- An embodiment of the present invention further provides a communication apparatus, including: an indication unit, configured to be used in a high speed dedicated shared channel
- the command type information included in the shared control channel HS-SCCH command indicates the transmit diversity mode of the uplink, and the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode; and the sending unit is configured to send the uplink on the HS-SCCH.
- the HS-SCCH command is described to the user equipment UE.
- the embodiment of the present invention further provides a method for determining an uplink transmit diversity manner, including: receiving an HS-SCCH command sent by a base station on a shared control channel HS-SCCH of a high speed dedicated shared channel, where the HS-SCCH command includes a command.
- Type information the command type information indicating a transmit diversity mode of the uplink, where the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode; and the uplink analysis adopted by the HS-SCCH command .
- the embodiment of the present invention further provides a terminal, including: a receiving unit, configured to receive an HS-SCCH command sent by a base station on a shared control channel HS-SCCH of a high-speed dedicated shared channel, where the HS-SCCH command includes command type information,
- the command type information indicates a transmit diversity mode of the uplink, where the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode;
- the obtaining unit is configured to obtain according to the HS-SCCH command received by the receiving unit The transmission analysis method adopted by the uplink.
- the embodiment of the present invention further provides a communication system, which includes any communication device provided by the embodiment of the present invention and any terminal provided by the embodiment of the present invention.
- the uplink transmit diversity mode indicated by the command type information included in the HS-SCCH command may enable the UE to maximize system performance such as system capacity and coverage when uplink antenna transmit diversity.
- FIG. 1 is a schematic diagram of a method for determining an uplink transmit diversity manner according to an embodiment of the present invention
- FIG. 1b is a schematic flowchart of another method for determining an uplink transmit diversity manner according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of uplink dual antenna transmit diversity of another UE according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of a communication system according to an embodiment of the present invention. detailed description
- the method includes: transmitting, by a base station, a shared control channel of a high-speed dedicated shared channel to a user equipment (User Equipment, UE) (Shared Control Channel)
- UE User Equipment
- Shared Control Channel For HS_DSCH, HS-SCCH
- the HS-SCCH Order includes order type information.
- embodiments of the present invention further provides a method of determining an uplink transmit diversity scheme, comprising: 101: receiving a HS-SCCH order from the base station on HS-SCCH (HS-SCCH Order ) 0
- the HS-SCCH command includes an order type information, where the command type information indicates an uplink transmit diversity mode, and the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode;
- the HS-SCCH command acquires the transmission analysis mode adopted by the uplink.
- the Order type indicates that the transmit diversity mode of the uplink is open loop transmit diversity mode or closed loop transmit diversity mode.
- the open loop transmit diversity mode can be considered as a slow fading feedback mode of closed loop transmit diversity
- the closed loop transmit diversity mode can be considered as a fast fading feedback mode of closed loop transmit diversity.
- the HS-SCCH Order is carried on the code channel of the HS-SCCH, and can indicate the indication signaling of the current wireless link, for example, can be used to indicate Continuous Packet Connectivity (CPC) characteristics, or indicate double Dual Cell-High Speed Downlink Packet Access (DC-HSDPA) features, etc.
- CPC Continuous Packet Connectivity
- DC-HSDPA Dual Cell-High Speed Downlink Packet Access
- the information transmission format of the HS-SCCH Order physical channel is as follows:
- the uplink type information in the HS-SCCH Order may be used to indicate the uplink. It is an open loop transmit diversity mode or a closed loop transmit diversity mode.
- the base station can determine whether the fast fading or the slow fading is the main factor affecting system performance such as system capacity or coverage. If fast fading is the main influencing factor, it can be in the Order type information. Indicates that the uplink is a closed-loop transmit diversity mode. If slow fading is the main influencing factor, the open-loop transmit diversity mode can be indicated in the Order type information.
- the combination of the three bits of the Order type information xodt, 1, xodt, 2, xodt, 3 can be (0, 1, 0), (0, 1, 1), (1, 0, 0), (1, 0 , 1), (1, 1, 0) and (1, 1, 1) any of the 6 combinations.
- 3 bits in the Order type are (0, 1, 0)
- the mode is open-loop transmit diversity.
- the transmit diversity mode of the uplink is closed-loop transmit diversity.
- the open loop transmit diversity mode or the closed loop transmit diversity mode may be indicated by any combination of the above six combinations, and may be specifically set by the system.
- the UE After receiving the HS-SCCH Order sent by the base station, the UE can learn the transmit diversity mode of the uplink according to the bit information of the Order type information bit, so that the uplink transmit diversity mode indicated by the Order type can be used.
- the UE maximizes system performance such as system capacity and coverage when the uplink antenna transmits transmit diversity.
- the open-loop transmit diversity may be further indicated by the Order information in the HS-SCCH Order.
- the codebook of the weighting factor of the way may be further indicated by the Order information in the HS-SCCH Order.
- the information bit of the Order information is also 3 bits.
- the combination of 3 bits of the information bits of the Order information may indicate the codebook of the weighting factor of the open loop transmit diversity mode.
- the two codebooks including the open-loop antenna alternately selecting the transmission mode and the open-loop antenna traversing any one of the four codebooks for calculating the beamforming mode.
- the base station can determine the actual performance of the network according to the principle of maximizing system performance, for example, according to the maximum signal to noise ratio.
- the two antennas of the UE are taken as an example. In an actual application, when the number of the antennas of the UE is greater than two, the method provided by the embodiment of the present invention may also be used.
- the codebook [wl, w2] of the open-loop antenna alternately selecting the transmission mode may include [0, 1] and [1, 0].
- the open-loop antenna traverses the codebook of the beamforming method l, w2]. According to w2, there are 4 codebooks, and wl and w2 can be defined as follows:
- the weighting factor codebook in the embodiment of the present invention is not limited to the specific codebook listed above.
- the base station can traverse the received signal in the PCI codebook space, and according to the optimal signal-to-noise ratio, determine the weighted template of the UE used in the next slow fading period.
- the combination of the three bits xord, 1 , xord, 2, xord, 3 of the information bits of the Order information may be (0, 0, 0), (0, 0, 1), (0, 1, 0), (0 Among the eight combinations of 1, 1, 1 ), (1, 0, 0 ), (1, 0, 1 ), (1, 1, 0 ), and (1, 1, 1 ).
- the base station may indicate, in any of the eight combinations, two codebooks of the open-loop antenna alternately selecting the transmission mode and the open-loop antenna traversing any one of the four codebooks of the computed beamforming mode, specifically Can be set by the system.
- the UE After receiving the HS-SCCH Order sent by the base station, the UE obtains the indicated uplink as the open-loop transmit diversity mode according to the bit information of the Order type information bit, and further obtains the indicated open loop according to the Order information.
- the weighting of the transmit diversity mode is due to the codebook l, w2], and the transmit diversity transmission of the uplink antenna can be performed according to the codebook.
- FIG. 2 is a schematic diagram of uplink dual antenna transmit diversity of a UE according to an embodiment of the present invention.
- the UE When the UE receives the codebook [wl, w2] indicated by the Order information in the HS-SCCH Order sent by the base station, the UE will use a data channel, such as an Enhanced-Dedicated Channel (E-DCH) or an enhanced dedicated physical data channel. (Enhanced Dedicated Physical Data Control Channel, E-DPDCH) or Enhanced Dedicated Physical Control Channel (E-DPCCH), processed by the transmission processing module, and after being spread/scrambled, respectively on the antenna 1. Multiply by, multiply with w2 on antenna 2, and then add to each of the different Dedicated Physical Control Channel (DPCCH) pilot sequences and transmit them via antennas.
- E-DCH Enhanced-Dedicated Channel
- DPCCH Dedicated Physical Control Channel
- the DPCCH pilot sequence may be an Orthogonal Variable Spreading Factor (OVSF) code channel; or it may be the same 0VSF code channel, but is space-time transmit diversity coding (Space Time) Transmit Diversity, STTD) Pilot pattern.
- OVSF Orthogonal Variable Spreading Factor
- STTD Space Time Transmit Diversity
- the transmission is performed; the spread/scrambled signal is multiplied by 2 on the antenna 2, and then added to the DPCCH2 pilot sequence and transmitted on the antenna 2.
- FIG. 3 it is a schematic diagram of uplink dual antenna transmit diversity of another UE in the embodiment of the present invention.
- the DPCCH code channel and other data channel code channels can be processed together by the transmission channel processing module to perform PCI weighting operation, thereby saving the pilot channel power on one antenna, and the rest is as shown in FIG. 2 The part shown.
- the base station sends an HS-SCCH Order to the UE on the HS-SCCH, and the Order type information in the HS-SCCH Order indicates that the uplink is an open-loop transmit diversity mode, and is indicated by the Order information in the HS_SCCH Order.
- the weighting factor of the ring transmit diversity mode is used to determine the codebook of the weighting factor of the open loop transmit diversity mode. Because the open-loop transmit diversity method uses the low correlation of the antenna slow fading channel to obtain the space caused by slow fading. The inter-diversity gain, therefore, allows closed-loop transmit diversity to overcome the slow fading and shadow fading of the uplink.
- the Order information in the HS-SCCH Order may also indicate the open loop antenna alternate. Select the antenna directly selected in the transmission method. For example, the three bits xord, 1, xord, 2, xord, 3 of the information bit of the Order information are (1, 1 , 1), indicating that the base station directly selects the antenna 1, and the value (0, 0, 0) represents the base station.
- the UE can directly transmit on the antenna 1 or the antenna 2 after determining the corresponding values of the three bits xord, 1 , xord, 2, xord, 3 of the received information of the Order information. Diversity is sent.
- the slow fading and shadow fading of the uplink can be overcome.
- the base station determines the PCI weight according to the maximum signal to noise ratio, and the PCI weight is determined. Sending to the UR, the UE can be fed back once every 2 millisecond period. The UE performs closed-loop transmission diversity diversity according to the PCT weight value.
- FIG. 4 it is a schematic structural diagram of a communication device 400 according to an embodiment of the present invention.
- the communication device 400 includes:
- the indicating unit 410 is configured to indicate, in the HS-SCCH command, the command type information of the uplink transmit diversity mode, where the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode.
- the instructing unit 410 may indicate that the uplink is an open loop transmit diversity mode or a closed loop transmit diversity mode by using an Order type information in the HS-SCCH Order.
- the uplink transmit diversity mode it can be determined according to whether the fast fading or slow fading is the main factor affecting system performance such as system capacity or coverage. If fast fading is the main influencing factor, it can be indicated in the Order type information.
- the uplink is a closed-loop transmit diversity mode. If slow fading is the main influencing factor, the open-loop transmit diversity mode can be indicated in the Order type information.
- the indicating unit 410 may indicate the combination of the 3 bits xodt, 1 , xodt, 2, xodt, 3 of the Order type information (0, 1 , 0), (0, 1 , 1 ), (1, 0, 0), ( Any of 1 , 0, 1 ), (1 , 1 , 0 ) and (1 , 1 , 1 ) indicates the manner of uplink transmit diversity.
- the sending unit 420 is configured to send the HS-SCCH command to the UE on the HS-SCCH.
- the bit information of the Order type information bit in the HS-SCCH Order of the indication unit 410 indicates which transmit diversity mode is adopted in the uplink, and is sent to the UE through the sending unit 420.
- the UE maximizes system performance such as system capacity and coverage when the uplink antenna transmits transmit diversity.
- the indication unit 410 may be further configured to: when the command type information indicates that the transmit diversity mode of the uplink is an open loop transmit diversity mode, the command information included in the HS-SCCH command indicates the open loop transmit diversity.
- the weight of the method is due to the codebook.
- the indicating unit 410 is configured to indicate, according to three bits of the command information, that the open-loop antenna alternately selects two weighting factor codebooks of the transmission mode and the open-loop antenna traversal to calculate four weighting factors of the beamforming mode. Any codebook in the codebook.
- the combination of the three bits of the information bit of the Order information xord, 1, xord, 2, xord, 3 can be (0, 0, 0), (0, 0, 1), (0, 1, 0), (0 , 1, 1), (1, 0, 0), (1, 0, 1), (1, 1, 0) and (1, 1, 1) one of the 8 combinations, the indicating unit 410 can The two codebooks in which the open loop antenna alternately selects the transmission scheme and the open loop antenna traverse any one of the four codebooks of the beamforming scheme are indicated by any one of the eight combinations.
- the indication unit 410 may further indicate the selected information on the command information included in the HS-SCCH command. antenna.
- the indication unit 410 may indicate that the base station directly selects the large line 1 by using the three bits xord, 1, xord, 2, xord, 3 of the information bits of the Order information, and the value is (0, 0). 0) indicates that the base station directly selects the antenna 2, and the UE can directly directly on the antenna 1 after determining the corresponding value of the three bits xord, 1, xord, 2, xord, 3 of the received information of the Order information. Transmit diversity transmission is performed on antenna 2.
- the 3 bits of the information bits of the Order information xord, 1, xord, 2, xord, 3 specific values, the determination of the value, and the determination of the determination indicate which particular antenna can be set according to the actual situation.
- the communication device 400 may further include a determining unit 430, configured to: if the indication unit indicates that the transmit diversity mode of the uplink is a closed loop transmit diversity mode, determine a PCI weight according to a maximum signal to noise ratio, and the sending unit 320 determines the determined The PCI weight is sent to the UE.
- a determining unit 430 configured to: if the indication unit indicates that the transmit diversity mode of the uplink is a closed loop transmit diversity mode, determine a PCI weight according to a maximum signal to noise ratio, and the sending unit 320 determines the determined The PCI weight is sent to the UE.
- the communication device sends an HS-SCCH Order to the UE on the HS-SCCH, and the Order type information in the HS_SCCH Order indicates that the uplink is an open-loop transmit diversity mode, and the Order information in the HS-SCCH Order is passed.
- a codebook indicating the weighting factor of the open loop transmit diversity mode to determine the weighting factor of the open loop transmit diversity mode directly indicates the selected antenna. Since the open-loop transmit diversity method utilizes the low correlation of the antenna slow fading channel to obtain the spatial diversity gain caused by slow fading, closed-loop transmit diversity can be made to overcome the slow fading and shadow fading of the uplink.
- an embodiment of the present invention provides a terminal 500, where the terminal 500 includes: a receiving unit 510, configured to receive an HS-SCCH command sent by a base station on a shared control channel HS-SCCH of a high-speed dedicated shared channel,
- the HS-SCCH order includes command type information, and the command type information indicates an uplink transmit diversity mode.
- the transmit diversity mode is an open loop transmit diversity mode or a closed loop transmit diversity mode.
- the obtaining unit 520 is configured to obtain a transmit analysis mode adopted by the uplink according to the HS-SCCH command received by the receiving unit 510.
- the HS-SCCH command received by the receiving unit 510 further includes command information. If the command type information indicates that the transmit diversity mode of the uplink is an open loop transmit diversity mode, the command information indicates the open loop transmit diversity mode.
- the codebook of the weighting factor is not limited to the following parameters.
- the open loop transmit diversity manner indicated by the command type information included in the HS-SCCH command received by the receiving unit 510 may include an open loop antenna alternate selection transmission manner and an open loop antenna traversal calculation beamforming manner; information of the command information. a bit of 3 bits, the 3 bits indicating that the open-loop antenna alternately selects a codebook of two weighting factors of a transmission mode and the codebook of the four weighting factors of the open-loop antenna traversal calculation beamforming mode Any Wozhong codebook.
- the command information indicates the selected antenna.
- the receiving unit 510 may be further configured to receive a precoding control indication PCI weight value sent by the base station, where the PCT weight value is used by the command type information to indicate that the uplink transmit diversity mode is a closed loop transmit diversity mode.
- the base station is determined based on the maximum signal to noise ratio.
- an embodiment of the present invention further provides a communication system including the communication device 400 as shown in FIG. 4 and the terminal 500 shown in FIG. 5.
- the method and apparatus provided by the embodiments of the present invention can make the uplink closed-loop transmit diversity mode a more general and universal uplink transmit diversity scheme, and include an antenna alternate transmit scheme of uplink open-loop transmit diversity. Beamforming scheme.
- the two schemes of the original open-loop transmit diversity are indicated by the closed-loop feedback of the HS-SCCH Order, which not only enables the antenna alternate selection and beamforming when the antenna transmit diversity can exist in the same transmission frame, but also enables open-loop transmit diversity.
- a special embodiment of uplink closed loop transmit diversity is a special embodiment of uplink closed loop transmit diversity.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
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Description
确定上行链路发射分集方式的方法、 通信装置、 终端和通信*** 本申请要求于 2009年 9月 29日提交中国专利局、 申请号为 200910110716. 6、发明 名称为 "确定上行链路发射分集方式的方法及通信装置"的中国专利申请的优先权, 其 全部内容通过弓 I用结合在本申请中。 技术领域
本发明涉及无线通信技术领域,尤其涉及 ·种确定上行链路发射分集方式的方法及 通信装置。 背景技术
在高速分组接入 (High Speed Packet Access , HSPA) 技术中, 通过上行天线发射 分集技术可以进一步利用发射分集的空间增益,在不改变上行传输速率的前提下降低小 区内的干扰水平, 从而扩大上行链路的覆盖范围。
目前上行链路天线发射分集方式包括开环发射分集 (Open Loop Transmission Diversity, OLTD )方式和闭环发射分集 (Closed Loop Transmission Diversity, CLTD ) 方式。开环发射分集方式包括开环天线交替选择发送方式和开环天线遍历计算波束成形 方式。
开环发射分集方式是在慢衰落周期内采用的方式, 不能有效克服快衰落。 而闭环发 射分集方式是基于快衰落周期的预编码控制指示(Pre-coding Control Indicator, PCI ) 反馈的方式, 没有考虑慢衰落场景。 两种发射分集方式无法进行有效结合, 不能根据实 际情况确定有效的发射分集方式。 发明内容
本发明实施例提供一种确定上行链路发射分集方式的方法、通信装置、 终端和通信 ***。
本发明实施例提供的一种确定上行链路发射分集方式的方法, 包括: 在高速专用共 享信道的共享控制信道 HS-SCCH上发送 HS-SCCH命令给用户设备 UE,所述 HS-SCCH命令 包括命令类型信息; 所述命令类型信息指示上行链路的发射分集方式, 所述发射分集方 式为开环发射分集方式或闭环发射分集方式。
本发明实施例还提供一种通信装置, 包括: 指示单元, 用于在高速专用共享信道的
共享控制信道 HS-SCCH命令包含的命令类型信息指示上行链路的发射分集方式,所述发 射分集方式为开环发射分集方式或闭环发射分集方式; 发送单元, 用于在 HS-SCCH上发 送所述 HS-SCCH命令给用户设备 UE。
本发明实施例还提供一种确定上行链路发射分集方式的方法, 包括: 接收基站在高 速专用共享信道的共享控制信道 HS-SCCH上发送的 HS-SCCH命令,所述 HS-SCCH命令包 括命令类型信息, 所述命令类型信息指示上行链路的发射分集方式, 所述发射分集方式 为开环发射分集方式或闭环发射分集方式;根据所述 HS-SCCH命令获取上行链路采用的 发射分析方式。
本发明实施例还提供一种终端, 包括: 接收单元, 用于接收基站在高速专用共享信 道的共享控制信道 HS-SCCH上发送的 HS-SCCH命令,所述 HS-SCCH命令包括命令类型信 息, 所述命令类型信息指示上行链路的发射分集方式, 所述发射分集方式为开环发射分 集方式或闭环发射分集方式; 获取单元, 用于根据所述接收单元接收的所述 HS-SCCH命 令获取上行链路采用的发射分析方式。
本发明实施例还提供一种通信***, 该通信***包括本发明实施例提供的任一通信 装置和本发明实施例提供的任一终端。
本发明实施例提供的方案中,通过 HS-SCCH命令包含的命令类型信息指示的上行链 路的发射分集方式, 可以使得 UE在上行天线发射分集时使***容量、 覆盖范围等*** 性能达到最大化。 附图说明
图 1为本发明实施例提供的一种确定上行链路发射分集方式的方法示意图; 图 lb为本发明实施例提供的另一种确定上行链路发射分集方式的方法流程示意图; 图 2为本发明实施例中 UE的上行双天线发射分集示意图;
图 3为本发明实施例中另一 UE的上行双天线发射分集示意图;
图 4为本发明实施例提供的一种通信装置的结构示意图;
图 5为本发明实施例提供的一种终端的结构示意图;
图 6为本发明实施例提供的一种通信***的示意图。 具体实施方式
为了使本发明的具体技术方案、 发明目的更加清楚, 下面结合具体的实施方式和附
图作进一步说明。
参照图 1, 为本发明实施例提供的一种确定上行链路发射分集方式的方法, 该方法 包括: 基站向用户设备 (User Equipment, UE) 发送高速专用共享信道的共享控制信道 (Shared Control Channel for HS_DSCH, HS-SCCH)命令(HS-SCCH Order),所述 HS-SCCH Order包括命令类型 (Order type) 信息。
参照图 lb, 本发明实施例还提供了一种确定上行链路发射分集方式的方法, 包括: 101: 接收基站在 HS-SCCH上发送的 HS-SCCH命令 (HS-SCCH Order )0
所述 HS-SCCH命令包括命令类型 (Order type) 信息, 所述命令类型信息指示上行 链路的发射分集方式, 所述发射分集方式为开环发射分集方式或闭环发射分集方式; 102: 根据所述 HS-SCCH命令获取上行链路采用的发射分析方式。
Order type 指示上行链路的发射分集方式为开环发射分集方式或闭环发射分集方 式。在本发明实施例中,开环发射分集方式可以认为是闭环发射分集的慢衰落反馈方式, 闭环发射分集方式可以认为是闭环发射分集的快衰落反馈方式。
HS-SCCH Order承载在 HS-SCCH的码道上, 可以表示当前无线链路处于哪种特性的 指示信令, 例如, 可以用于指示连续性分组连接 (Continuous Packet Connectivity, CPC)特性,或者指示双小区高速下行分组接入(Dual Cell-High Speed Downlink Packet Access, DC-HSDPA) 特性等。
HS-SCCH Order物理信道的信息传输格式如下所示:
- 命令类型 (Order type) (3 bits) : xodt, 1, xodt, 2, xodt, 3 - 命令 (Order) (3 bits) : xord, 1, xord, 2, xord, 3
- UE标识 (UE identity) (16 bits) : xue, 1, xue, 2, ···, xue, 16 在本发明实施例中, 可以通过 HS-SCCH Order中的 Order type信息来指示上行链 路为开环发射分集方式或闭环发射分集方式。 基站在决定上行链路发射分集方式的时 候, 可以根据快衰落还是慢衰落是影响***容量或覆盖范围等***性能的主要因素来确 定, 若快衰落是主要影响因素, 则可以在 Order type信息中指示上行链路为闭环发射 分集方式, 若慢衰落是主要影响因素, 则可以在 Order type信息中指示开环发射分集 方式。
Order type信息的 3个比特 xodt, 1, xodt, 2, xodt, 3的组合可以为 (0, 1, 0)、 (0, 1, 1)、 (1, 0, 0)、 (1, 0, 1)、 (1, 1, 0) 以及 (1, 1, 1) 这 6种组合中的任 意一个。 例如, Order type中的 3个比特为 (0, 1, 0) 时, 表示上行链路的发射分集
模式为开环发射分集方式, Order type中的 3个比特为 (0, 1, 1 ) 时, 表示上行链路 的发射分集模式为闭环发射分集方式。 总之, 可以由上述 6个组合中的任一组合指示开 环发射分集方式或闭环发射分集方式, 具体可以由***设定。
UE接收到基站发送的 HS-SCCH Order后, 根据其中的 Order type信息位的比特信 息可以获知上行链路采用何种发射分集方式, 这样, 通过 Order type指示的上行链路 的发射分集方式, 可以使得 UE在上行天线发送发射分集时使***容量、 覆盖范围等系 统性能达到最大化。
在本发明实施例中, 当通过 HS-SCCH Order中 Order type信息的 3个比特指示上 行链路为开环发射分集方式时, 可进一步通过 HS-SCCH Order中的 Order信息来指示开 环发射分集方式的加权因子的码本。
Order信息的信息位也为 3个比特, Order type信息指示上行链路为开环发射分集 方式时, Order信息的信息位的 3个比特的组合可以指示开环发射分集方式的加权因子 的码本,包括开环天线交替选择发送方式的 2个码本和开环天线遍历计算波束成形方式 的 4个码本中的任一种。 基站在选择具体的码本时, 可以以使***性能最大化的原则, 结合网络的实际状况进行确定, 例如可以根据最大信噪比确定。
在本发明实施例中, 以 UE两根天线为例, 在实际的应用中, 当 UE天线数大于两根 时, 同样可以采用本发明实施例提供的方法。
UE为两根天线时,开环天线交替选择发送方式的码本 [wl , w2]可以包括 [0, 1]和 [1 , 0]。 开环天线遍历计算波束成形方式的码本 l , w2] , 根据 w2的不同, 有 4个码本, wl和 w2可以按如下方式进行定义:
在本发明实施例中的加权因子码本并不限定于上述列举的具体码本。
基站可以在 PCI码本空间中对接收信号进行遍历, 根据最优的信噪比, 决定 UE在 下 '个慢衰落周期采用的加权冈子码本。
Order信息的信息位的 3个比特 xord, 1 , xord, 2, xord, 3的组合可以为(0 , 0, 0 )、 ( 0, 0, 1 )、 (0, 1, 0 )、 (0, 1, 1 )、 (1, 0, 0 )、 (1, 0, 1 )、 (1, 1, 0 ) 和 (1, 1, 1 ) 这 8种组合中的 ·种。 基站可以以这 8种组合中的任意 ·种来指示开环天线交替选 择发送方式的 2个码本和开环天线遍历计算波束成形方式的 4个码本中的任一种, 具体
可以由***设定。
UE在接收到基站发送的 HS-SCCH Order后, 若根据其中的 Order type信息位的比 特信息获取指示的上行链路为开环发射分集方式,又根据其中的 Order信息进一步获取 所指示的开环发射分集方式的加权因于码本 l, w2], 则可以根据该码本进行上行天线 的发射分集发送。
如图 2所示, 为本发明实施例中 UE的上行双天线发射分集示意图。 当 UE接收到基 站发送的 HS-SCCH Order中 Order信息指示的码本 [wl, w2] , 则 UE将数据信道, 例如 增强专用信道 (Enhanced-Dedicated Channel , E-DCH ) 或增强专用物理数据信道 (Enhanced Dedicated Physical Data Control Channel , E- DPDCH) 或增强专用物理 控制信道 (Enhanced Dedicated Physical Control Channel , E- DPCCH), 经传输处理 模块处理, 并经扩频 /加扰后, 分别在天线 1上与 相乘, 在天线 2上与 w2相乘, 然 后再分别与各自与不同的专用物理控制信道 (Dedicated Physical Control Channel, DPCCH) 导频序列相加后经天线发送, 不同天线上所采用的不同 DPCCH导频序列, 可以 为小同的正交可变扩频因子 (Orthogonal Variable Spreading Factor, OVSF) 码道; 或者,也可以为同一个 0VSF码道,但是为经过空时发射分集编码(Space Time Transmit Diversity, STTD) 的导频图案。 例如, 当接收到的加权因子码本为 [0, 1]时, 则在天 线 1上, 无信号发送, 也即当 Order信息指示的加权因子码本此时选择的为开环天线交 替选择发送方式, 且选择的为天线 2。 若接收到的加权因子码本为 [ 2 ] , 则在天 线 1上将经扩频 /加扰后的信号与1/ 相乘, 然后与 DPCCH1导频序列相加, 在天线 1
1 + 7
上发送;在天线 2上将经扩频 /加扰后的信号与 2 相乘,然后与 DPCCH2导频序列相加, 在天线 2上发送。
如图 3所示, 为本发明实施例中另一 UE的上行双天线发射分集示意图。 在本示意 图所示的结构中,可以将 DPCCH码道和其他数据信道码道一起经传输信道处理模块处理, 进行 PCI加权运算, 则可以节省一个天线上的导频信道功率, 其余部分参照图 2所示部 分。
本发明实施例中基站在 HS-SCCH上发送 HS-SCCH Order给 UE, 该 HS-SCCH Order 中的 Order type信息指示上行链路为开环发射分集方式, 并通过 HS_SCCH Order中的 Order信息指示开环发射分集方式的加权因子来确定开环发射分集方式的加权因子的码 本。 因为开环发射分集方式是利用天线慢衰落信道的低相关性, 来获得慢衰落造成的空
间分集增益, 因此可以使得闭环发射分集克服上行链路的慢衰落和阴影衰落。
在本发明实施例中, 当通过 HS-SCCH Order中 Order type信息的 3个比特指示上 行链路为开环发射分集方式时, 也可以在 HS-SCCH Order中的 Order信息来指示开环天 线交替选择发送方式中直接选定的天线。例如, Order信息的信息位的 3个比特 xord, 1, xord, 2, xord, 3取值为 (1 , 1 , 1 )表示基站直接选择天线 1 , 取值 (0, 0 , 0 ) 表示基 站直接选择天线 2, 则 UE在接收到的 Order信息的信息位的 3个比特 xord, 1 , xord, 2, xord, 3, 确定相应的取值后, 可以直接在天线 1或天线 2上进行发射分集发送。 Order 信息的信息位的 3个比特 xord, 1 , xord, 2, xord, 3具体的取值, 该取值的确定, 以及 确定指示哪个特定的天线都可以由***根据实际状况设定。
通过反馈 HS-SCCH Order中的 Order信息来指示 UE在哪个天线上交替发送发射分 集, 可以克服上行链路的慢衰落和阴影衰落。
在本发明实施例中, 当通过 HS-SCCH Order中 Order type信息的 3个比特指示上 行链路为闭环发射分集方式时, 基站根据最大信噪比确定 PCI权值, 并将所述 PCI权值 发送给所述 UR, 可以于每个 2毫秒周期向 UE反馈一次。 UE根据该 PCT权值进行闭环发 送发射分集。
如图 4所示, 为本发明实施例提供的通信装置 400的结构示意图, 该通信装置 400 包括:
指示单元 410, 用于在 HS-SCCH命令包含的命令类型信息指示上行链路的发射分集 方式, 所述发射分集方式为开环发射分集方式或闭环发射分集方式。
指示单元 410可以通过 HS-SCCH Order中的 Order type信息来指示上行链路为开 环发射分集方式或闭环发射分集方式。 在决定上行链路发射分集方式的时候, 可以根据 快衰落还是慢衰落是影响***容量或覆盖范围等***性能的主要因素来确定,若快衰落 是主要影响因素, 则可以在 Order type信息中指示上行链路为闭环发射分集方式, 若 慢衰落是主要影响因素, 则可以在 Order type信息中指示开环发射分集方式。 指示单 元 410可以指示 Order type信息的 3个比特 xodt, 1 , xodt, 2, xodt, 3的组合 (0, 1 , 0 )、 (0, 1 , 1 )、 (1 , 0, 0 )、 (1 , 0, 1 )、 (1 , 1 , 0 ) 以及 (1 , 1 , 1 ) 中的任意一个来 表示上行链路的发射分集的方式。
发送单元 420, 用于在 HS-SCCH上发送所述 HS-SCCH命令给 UE。
在本发明实施例中, 通过指示单元 410在 HS-SCCH Order中的 Order type信息位 的比特信息指示上行链路采用何种发射分集方式,并通过发送单元 420发送给 UE,可以
使得 UE在上行天线发送发射分集时使***容量、 覆盖范围等***性能达到最大化。 所述指示单元 410还可以用于若所述命令类型信息指示上行链路的发射分集方式为 开环发射分集方式时,在所述 HS-SCCH命令中包含的命令信息指示所述开环发射分集方 式的加权因于的码本。所述指示单元 410用于根据所述命令信息的 3个比特指示所述开 环天线交替选择发送方式的 2个加权因子的码本和所述开环天线遍历计算波束成形方式 的 4个加权因子的码本中的任一种码本。
Order信息的信息位的 3个比特 xord, 1, xord, 2, xord, 3的组合可以为(0, 0, 0)、 (0, 0, 1)、 (0, 1, 0)、 (0, 1, 1)、 (1, 0, 0)、 (1, 0, 1)、 (1, 1, 0) 和 (1, 1, 1) 这 8种组合中的一种, 指示单元 410可以以这 8种组合中的任一种指示开环天线交 替选择发送方式的 2个码本和开环天线遍历计算波束成形方式的 4个码本中的任一种。
若所述指示单元 410在所述命令类型信息指示上行链路的发射分集方式为开环发射 分集方式时,则指示单元 410还可以在所述 HS-SCCH命令中包含的命令信息上指示选择 的天线。 例如, 指示单元 410可以以 Order信息的信息位的 3个比特 xord, 1, xord, 2, xord, 3指示为 (1, 1, 1) 表示基站直接选择大线 1, 取值 (0, 0, 0) 表示基站直接选 择天线 2, 则 UE在接收到的 Order信息的信息位的 3个比特 xord, 1, xord, 2, xord, 3, 确定相应的取值后, 可以直接在天线 1或天线 2上进行发射分集发送。 Order信息的信 息位的 3个比特 xord, 1, xord, 2, xord, 3具体的取值, 该取值的确定, 以及确定的去 定指示哪个特定的天线都可以由根据实际状况设定。
进一步, 该通信装置 400还可以包括确定单元 430, 用于若所述指示单元指示上行 链路的发射分集方式为闭环发射分集方式,根据最大信噪比确定 PCI权值,发送单元 320 将确定的 PCI权值发送给 UE。
本发明实施例中,通信装置在 HS-SCCH上发送 HS-SCCH Order给 UE ,该 HS_SCCH Order 中的 Order type信息指示上行链路为开环发射分集方式, 并通过 HS-SCCH Order中的 Order信息指示开环发射分集方式的加权因子来确定开环发射分集方式的加权因子的码 本直接指示选择的天线。 因为开环发射分集方式是利用天线慢衰落信道的低相关性, 来 获得慢衰落造成的空间分集增益, 因此可以使得闭环发射分集克服上行链路的慢衰落和 阴影衰落。
参照图 5所示,本发明实施例提供了一种终端 500,该终端 500包括:接收单元 510, 用于接收基站在高速专用共享信道的共享控制信道 HS-SCCH上发送的 HS-SCCH命令,所 述 HS-SCCH命令包括命令类型信息, 所述命令类型信息指示上行链路的发射分集方式,
所述发射分集方式为开环发射分集方式或闭环发射分集方式; 获取单元 520, 用于根据 所述接收单元 510接收的所述 HS-SCCH命令获取上行链路采用的发射分析方式。
所述接收单元 510接收的 HS-SCCH命令还包括命令信息; 若所述命令类型信息指示 上行链路的发射分集方式为开环发射分集方式,所述命令信息指示所述开环发射分集方 式的加权因子的码本。
所述接收单元 510接收的 HS-SCCH命令包括的所述命令类型信息指示的开环发射分 集方式可以包括开环天线交替选择发送方式和开环天线遍历计算波束成形方式;所述命 令信息的信息位为 3个比特,所述 3个比特指示所述开环天线交替选择发送方式的 2个 加权因子的码本和所述开环天线遍历计算波束成形方式的 4个加权因子的码本中的任一 禾中码本。
若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示选择的天线。
所述接收单元 510还可以用于接收所述基站发送的预编码控制指示 PCI权值,所述 PCT权值由所述命令类型信息指示上行链路的发射分集方式为闭环发射分集方式时, 所 述基站根据最大信噪比确定。
参照图 6所示, 本发明实施例还提供了一种通信***, 包括如图 4所述的通信装置 400和图 5所示的终端 500。
此外,通过本发明实施例提供的方法和装置可以使上行链路闭环发射分集方式成为 一种更一般和普遍意义的上行发射分集方案,包含上行链路开环发射分集方式的天线交 替发射方案和波束成形方案。 通过 HS-SCCH Order的闭环反馈的方式来指示原来开环发 射分集时的两种方案,不仅使天线发射分集时天线交替选择和波束成形可以并存在同一 种发射框架中, 而且使得开环发射分集成为上行链路闭环发射分集的一种特殊实施例。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本发明可借助软 件加必需的通用硬件平台的方式来实现, 当然也可以通过硬件, 但很多情况下前者是更 佳的实施方式。 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流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于一计算机可 读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述 的存储介质可为磁碟、 光盘、 只读存储记忆体 (Read-Only Memory, ROM) 或随机存储 记忆体 (Random Access Memory, RAM) 等。
虽然通过参照本发明的某些优选实施方式, 已经对本发明进行了图示和描述, 但本
领域的普通技术人员应该明白, 可以在形式上和细节上对其作各种改变, 而不偏离本发 明的范围。
Claims
1、 一种确定上行链路发射分集方式的方法, 其特征在于, 包括:
在高速专用共享信道的共享控制信道 HS-SCCH上发送 HS-SCCH命令给用户设备 UE, 所述 HS-SCCH命令包括命令类型信息;
所述命令类型信息指示上行链路的发射分集方式,所述发射分集方式为开环发射分 集方式或闭环发射分集方式。
2、 根据权利要求 1所述的方法, 其特征在于, 所述 HS-SCCH命令还包括命令信息; 若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示所述开环发射分集方式的加权因子的码本。
3、 根据权利要求 2所述的方法, 其特征在于, 所述开环发射分集方式包括开环天 线交替选择发送方式和开环天线遍历计算波束成形方式;
所述命令信息的信息位为 3个比特,所述 3个比特指示所述开环天线交替选择发送 方式的 2个加权因子的码本和所述开环天线遍历计算波束成形方式的 4个加权因子的码 本中的任一种码本。
4、 根据权利要求 1所述的方法, 其特征在于, 所述 HS-SCCH命令还包括命令信息; 若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示选择的天线。
5、 根据权利要求 1所述的方法, 其特征在于, 若所述命令类型信息指示上行链路 的发射分集方式为闭环发射分集方式, 根据最大信噪比确定预编码控制指示 PCI权值, 并将所述 PCI权值发送给所述 UE。
6、 一种通信装置, 其特征在于, 包括:
指示单元,用于在高速专用共享信道的共享控制信道 HS-SCCH命令包含的命令类型 信息指示上行链路的发射分集方式,所述发射分集方式为开环发射分集方式或闭环发射 分集方式;
发送单元, 用于在 HS-SCCH上发送所述 HS-SCCH命令给用户设备 UE。
7、 根据权利要求 6所述的通信装置, 其特征在于, 所述指示单元还用于若所述命 令类型信息指示上行链路的发射分集方式为开环发射分集方式,在所述 HS-SCCH命令中 包含的命令信息指示所述开环发射分集方式的加权因子的码木。
8、 根据权利要求 7所述的通信装置, 其特征在于, 所述开环发射分集方式包括开 环天线交替选择发送方式和开环天线遍历计算波束成形方式; 所述指示单元用于根据所述命令信息的 3个比特指示所述开环天线交替选择发送方 式的 2个加权因子的码本和所述开环天线遍历计算波束成形方式的 4个加权因子的码本 中的任一种码本。
9、 根据权利要求 6所述的通信装置, 其特征在于, 所述指示单元还用于若所述命 令类型信息指示上行链路的发射分集方式为开环发射分集方式,在所述 HS-SCCH命令中 包含的命令信息上指示选择的天线。
10、 根据权利要求 6所述的通信装置, 其特征在于, 所述通信装置还包括: 确定单元, 用于若所述指示单元指示上行链路的发射分集方式为闭环发射分集方 式, 根据最大信噪比确定预编码控制指示 PCI权值;
所述发送单元还用于将所述确定单元确定的 PCI权值发送给 UE。
11、 一种确定上行链路发射分集方式的方法, 其特征在于, 包括:
接收基站在高速专用共享信道的共享控制信道 HS-SCCH上发送的 HS-SCCH命令,所 述 HS-SCCH命令包括命令类型信息, 所述命令类型信息指示上行链路的发射分集方式, 所述发射分集方式为开环发射分集方式或闭环发射分集方式;
根据所述 HS-SCCH命令获取上行链路采用的发射分析方式。
12、 根据权利要求 11所述的方法, 其特征在于, 所述接收的 HS-SCCH命令还包括 命令信息;
若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示所述开环发射分集方式的加权因子的码本。
13、 根据权利要求 12所述的方法, 其特征在于, 所述开环发射分集方式包括开环 天线交替选择发送方式和开环天线遍历计算波束成形方式;
所述命令信息的信息位为 3个比特,所述 3个比特指示所述开环天线交替选择发送 方式的 2个加权因子的码本和所述开环天线遍历计算波束成形方式的 4个加权因子的码 本中的任一种码本。
14、 根据权利要求 11所述的方法, 其特征在于, 所述接收的 HS-SCCH命令还包括 命令信息;
若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示选择的天线。
15、 根据权利要求 11所述的方法, 其特征在于, 所述方法还包括:
接收所述基站发送的预编码控制指示 PCI权值,所述 PCI权值由所述命令类型信息 指示上行链路的发射分集方式为闭环发射分集方式时, 所述基站根据最大信噪比确定。
16、 一种终端, 其特征在于, 包括:
接收单元, 用于接收基站在高速专用共享信道的共享控制信道 HS-SCCH 上发送的 HS-SCCH命令, 所述 HS-SCCH命令包括命令类型信息, 所述命令类型信息指示上行链路 的发射分集方式, 所述发射分集方式为开环发射分集方式或闭环发射分集方式;
获取单元,用于根据所述接收单元接收的所述 HS-SCCH命令获取上行链路采用的发 射分析方式。
17、 根据权利要求 16所述的终端, 其特征在于, 所述接收单元接收的 HS-SCCH命 令还包括命令信息;
若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示所述开环发射分集方式的加权因子的码本。
18、 根据权利要求 17所述的终端, 其特征在于, 所述接收单元接收的 HS-SCCH命 令包括的所述命令类型信息指示的开环发射分集方式包括开环天线交替选择发送方式 和开环大线遍历计算波束成形方式;
所述命令信息的信息位为 3个比特,所述 3个比特指示所述开环天线交替选择发送 方式的 2个加权因子的码本和所述开环天线遍历计算波朿成形方式的 4个加权因子的码 本中的任一种码本。
19、 根据权利要求 16所述的终端, 其特征在于, 所述接收单元接收的 HS-SCCH命 令还包括命令信息;
若所述命令类型信息指示上行链路的发射分集方式为开环发射分集方式,所述命令 信息指示选择的天线。
20、 根据权利要求 16所述的终端, 其特征在于, 所述接收单元还用于接收所述基 站发送的预编码控制指示 PCI权值,所述 PCI权值由所述命令类型信息指示上行链路的 发射分集方式为闭环发射分集方式时, 所述基站根据最大信噪比确定。
21、 一种通信***, 其特征在于, 所述通信***包括如权 6至权 10任一所述的通 信装置和如权 16至权 20任一所述的终端。
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CN103067139A (zh) * | 2011-10-24 | 2013-04-24 | 中兴通讯股份有限公司 | 上行发送分集配置方法及装置 |
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