WO2010028581A1 - 多用户共享同一信道的方法、装置及系统 - Google Patents

多用户共享同一信道的方法、装置及系统 Download PDF

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Publication number
WO2010028581A1
WO2010028581A1 PCT/CN2009/073741 CN2009073741W WO2010028581A1 WO 2010028581 A1 WO2010028581 A1 WO 2010028581A1 CN 2009073741 W CN2009073741 W CN 2009073741W WO 2010028581 A1 WO2010028581 A1 WO 2010028581A1
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Prior art keywords
signal
user
gmsk
users
order modulation
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PCT/CN2009/073741
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English (en)
French (fr)
Inventor
谭斌
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华为技术有限公司
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Publication of WO2010028581A1 publication Critical patent/WO2010028581A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/183—Multiresolution systems

Definitions

  • the present invention relates to the field of network communications, and in particular, to a method, apparatus, and system for multiple users sharing the same channel.
  • GSM Global System for Mobile communications
  • OSC OSC
  • Step 11 The transmitting end maps the signals of the two users to the same direction component and the orthogonal component, and distinguishes the users by different pilot sequences.
  • the method for implementing this step can be specifically, by quadrature phase modulation (Quadrature Phase Shift)
  • the modulation method maps the signals of two users to the same direction component and the orthogonal component.
  • Step 12 The receiver uses the Single Antenna Interference Cancellation (SAIC) technique to eliminate interference from another user to obtain the desired signal.
  • SAIC Single Antenna Interference Cancellation
  • TDMA Time Division Multiple Access
  • the number of frames is only half of the full rate, which requires a higher signal-to-interference ratio to ensure the quality of the call.
  • fewer users satisfy the above-mentioned signal-to-interference ratio requirements, resulting in the inability to use OCS technology in actual situations. It is not possible to multiplex two or more users on one channel, resulting in a small actual gain in system capacity.
  • embodiments of the present invention provide a method, apparatus, and system for multiple users sharing the same channel, the method, device, and system capable of enabling three users or more than three Users can share the same channel, increasing the actual gain of system capacity.
  • a specific embodiment of the present invention provides a method for a multi-user to share the same channel, the method comprising: [15] modulating a signal of any one of a plurality of users by Gaussian minimum shift keying GMSK modulation Into the GMSK signal;
  • a specific embodiment of the present invention further provides a method for receiving multi-user signals, where the method includes:
  • Embodiments of the present invention further provide an apparatus for a multi-user to share the same channel, the apparatus comprising: [24] a modulating unit, configured to pass a signal of any one of a plurality of users through a Gaussian minimum frequency shift key Controlling the GMSK modulation mode to modulate into a GMSK signal;
  • Embodiments of the present invention also provide an apparatus for receiving multi-user signals, the apparatus comprising:
  • a receiving unit configured to receive a Gaussian minimum frequency shift keying GMSK signal and a high order modulation signal
  • a determining unit configured to determine, according to the training sequence code TSC, whether the required signal is a GMSK signal
  • a first demodulation unit configured to demodulate the GMSK signal to acquire a user signal if the determining unit determines that the YES is
  • the second demodulation unit is configured to demodulate the high-order modulation symbol in the high-order modulation signal to acquire the user signal if the determining unit determines NO.
  • Embodiments of the present invention also provide a system in which multiple users share the same channel, including a transmitting device and a receiving device.
  • the transmitting device is configured to modulate a signal of any one of the plurality of users into a GMSK signal by a Gaussian minimum shift keying GMS K modulation method;
  • the receiving device is configured to receive a Gaussian minimum shift keying GMSK signal and a high-order modulation signal sent by the transmitting device; and determine, according to the training sequence code TSC, whether the required signal is a GMSK signal; if yes, demodulate The GMSK signal acquires a user signal; otherwise, the high-order modulation symbol in the high-order modulated signal is demodulated to acquire a user signal.
  • the technical solution of the embodiment of the present invention transmits three or more user signals through the same channel by using GMSK modulation and high-order modulation. Users or more than three users can share the same channel, increasing the actual gain of system capacity
  • FIG. 1 is a flowchart of a method for two users sharing the same channel provided by the prior art
  • FIG. 2 is a flowchart of a method for multiple users sharing the same channel according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for multiple users sharing the same channel according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for multiple users sharing the same channel according to another embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for receiving a multi-user signal according to an embodiment of the present invention
  • FIG. FIG. 6 is a structural diagram of an apparatus for multiple users sharing the same channel according to an embodiment of the present invention
  • FIG. 7 is a structural diagram of a multi-user signal receiving apparatus according to an embodiment of the present invention. ;
  • FIG. 8 is a structural diagram of a system in which multiple users share the same channel according to an embodiment of the present invention.
  • An embodiment of the present invention provides a method for a multi-user to share the same channel.
  • multiple users represent three or more users, and the method adopts a Gaussian minimum shift.
  • GMSK Modulation mode and high-order modulation provide a method for implementing multi-user sharing the same channel.
  • the specific implementation method can be: For the convenience of description, three users are taken as an example, and three users are assumed to be users. 1.
  • the user 2 and the user 3 are implemented by modulating the signal of the user 1 into a GMSK signal by means of GMSK modulation, and modulating the signals of the user 2 and the user 3 into a high-order modulation signal by a high-order modulation method, and then The GMSK signal and the high order modulation signal are transmitted over the same channel.
  • the method is implemented by transmitting the signal of the user 1 into a GMS K signal by GMSK, and transmitting the signal of the remaining user through the high-order modulation signal.
  • the above method transmits three or more user signals through the same channel by using GMS K modulation and high-order modulation, thereby realizing that three users or more than three users can share the same channel, thereby increasing system capacity.
  • An embodiment of the present invention provides a method for a multi-user to share the same channel, as shown in the following figure.
  • the method can include:
  • Step 21 modulating a signal of any one of the plurality of users into a GMSK signal by using a GMSK modulation method
  • Step 22 Modulate the signals of the remaining users of the plurality of users into high-order modulated signals by high-order modulation.
  • the signal of the remaining users may be user information of the remaining users, and may also be user information of the remaining users and verification information of the remaining users.
  • the verification information may be turbo coding, convolutional coding, concatenated coding.
  • the method for implementing the step may be that the signals of the remaining users are modulated by a high-order modulation mode and are mapped to different bits corresponding to the high-order modulation symbols in the high-order modulation signal.
  • the high order modulation symbol can be, but is not limited to, the following Equation, 8 phase shift keying (8PSK), 16 quadrature amplitude modulation (16QAM) symbol or 32 phase quadrature amplitude modulation 32QAM symbol.
  • Step 23 The GMSK signal and the high order modulated signal are transmitted through the same channel.
  • the foregoing transmission by the same channel may be specifically performed by multiplexing the GMSK signal and the high-order modulation signal onto orthogonal subchannels of the same channel.
  • the foregoing steps may be completed by the sending end, and the sending end may specifically be a base station.
  • the transmitting end can also control the transmission power of the high-order modulation signal to be lower than the transmission power of the GMSK signal according to requirements, so as to ensure that the receiving end can demodulate the GMSK signal;
  • the step of controlling the transmission power is an optional step, when the channel is The situation is better. Specifically, if the interference of the channel is relatively small, the transmission power control is not required.
  • the present invention provides a further embodiment.
  • the embodiment provides a method for a multi-user to share the same channel.
  • the implementation scenario in this embodiment is that the number of users is three, and that the user 1, the user 2, and the user 3 are assumed.
  • the high-order modulation mode used in this embodiment is 16QAM, and the corresponding symbol is a 16QAM symbol.
  • the information related to the communication may include: the sender notifies the user 1 that the signal is transmitted by using the GMSK modulation method, the sender notifies the user 2, the signal of the user 3 is modulated by 16QAM, and the signal of the user 2 is notified to be mapped in the 16QAM symbol.
  • the corresponding first and third bits, the signal of the user 3 is mapped to the second and fourth bits corresponding to the 16QA M symbol, and of course, other mapping relationships may be used in actual situations.
  • the method is shown in Figure 3 and includes the following steps:
  • Step 31 The user 1 signal is modulated into a GMSK signal by GMSK modulation
  • Step 32 The signals of user 2 and user 3 are modulated by 16QAM modulation, and the signals of user 2 and user 3 are mapped to different bits corresponding to 16QAM symbols;
  • the specific method for implementing the step may be: mapping the signal of the user 2 to the first and third bits corresponding to the 16QAM symbol, and mapping the signal of the user 3 to the second and fourth bits corresponding to the 16QAM symbol, of course In actual situations, the signal of the user 2 may be mapped to the first and fourth bits corresponding to the 16QAM symbol, and the signal of the user 3 may be mapped to the second and third bits corresponding to the 16QAM symbol, and of course, other combinations may be used. The way, here is not an example.
  • the signals of the user 2 and the user 3 may be the user information of the user 2 and the user 3, and may also be the user information of the user 2, the user 3, and the verification information of the user 2 and the user 3, when the signal is the user 2.
  • User 3 user information And the user 2, the user 3's verification information, the method for implementing the step may be: mapping the user information of the user 2 to the first bit corresponding to the 16QAM symbol, and mapping the user 2's verification information to the 16QAM symbol.
  • the third bit is mapped; the user information of the user 3 is mapped to the second bit corresponding to the 16QAM symbol, and the check information of the user 3 is mapped to the fourth bit corresponding to the 16QAM symbol;
  • the difference between the bits, the user information and the check information are mapped on different bits, but the mapping principle is to map the user information on the bits of the high reliability bit, and map the check information to the bits of the low reliability bit. On the bit.
  • Step 33 Send the GMSK signal and the 16QAM symbol through the same channel.
  • the transmission power of the above 16QAM symbol is lower than the transmission power of GMSK.
  • the signal of the user 1 is sent by the GMSK modulation mode, and the signals of the user 2 and the user 3 are transmitted by the 16QAM modulation mode, so that the signals of the user 1, the user 2, and the user 3 share the same channel, and the system capacity is increased.
  • the actual gain, and the method can effectively verify the signal transmission accuracy of the user 2 and the user 3 by adding the check information to the signals of the user 2 and the user 3.
  • the present invention provides another embodiment.
  • This embodiment provides a method for a multi-user to share the same channel.
  • the implementation scenario in this embodiment is that the number of users is four, and the user is assumed to be user 1, user 2, and user 3.
  • the user 4 the high-order modulation mode used in this embodiment is 32QAM, and the corresponding symbol is 32QAM symbol.
  • each user and the transmitting end have completed the communication connection, and communicated.
  • the related information interaction of the communication may include: the sender notifies the user 1 that the signal is transmitted by using the G MSK modulation method, and the sender notifies the user 2, the user 3, the user 4 that the signal is modulated by the 32QAM modulation mode, and notifies the user.
  • the signal of 2 is mapped to the first bit corresponding to the 32QAM symbol
  • the signal of user 3 is mapped to the 2nd and 5th bits corresponding to the 32QAM symbol
  • the signal of user 4 is mapped to the 3rd and 4th bits corresponding to the 32QAM symbol.
  • other mapping relationships can also be used.
  • the method is shown in Figure 4 and includes the following steps:
  • Step 41 The user 1 signal is modulated into a GMSK signal by GMSK modulation
  • Step 42 The signals of the user 2, the user 3 and the user 4 are modulated by the 32QAM modulation mode, and the signals of the user 2, the user 3, and the user 4 are mapped to different bits corresponding to the 32QAM symbol.
  • the method for implementing this step may be: mode A, mapping the signal of user 2 to the first bit corresponding to the 32QAM symbol, mapping the signal of user 3 to the second and fifth bits corresponding to the 32QAM symbol, and placing the user 4
  • the signal mapping is sent in the 3rd and 4th bits corresponding to the 32QAM symbol;
  • mapping the signal of the user 2 to the first bit corresponding to the 32QAM symbol and mapping the signal of the user 3. Transmitting the signal of the user 4 to the 3rd and 5th bits corresponding to the 32QAM symbol in the 2nd and 4th bits corresponding to the 32QAM symbol;
  • the user's signal can be the user's user information, and can also be the user's user information and the user's verification information.
  • the method for implementing the step may be: mapping the user information of the user 2 and the check information of the user 2 to the first bit corresponding to the 32QA M symbol, and mapping the user information of the user 3 to the second bit corresponding to the 32QAM symbol. Mapping the user 3's parity information to the 5th bit corresponding to the 32QAM symbol, mapping the user information of the user 4 to the 3rd bit corresponding to the 32QAM symbol, and mapping the user 4's parity information to the 32QAM symbol. 4 bits.
  • the user information and the check information may be mapped to different bits according to the allocated bits.
  • the mapping principle is the same as the mapping principle of step 32, and is not mentioned here.
  • Step 43 The GMSK signal and the 32QAM symbol are transmitted through the same channel.
  • the transmit power of 32QAM is lower than the transmit power of GMSK.
  • the signal of user 1 is transmitted by GMSK modulation, and the signals of user 2, user 3, and user 4 are transmitted by 32QAM modulation, so that signal sharing of user 1, user 2, user 3, and user 4 is performed.
  • the same channel increases the actual gain of the system capacity, and the method can effectively verify the signal transmission accuracy of the user 2, the user 3, and the user 4 by adding check information to the signals of the user 2, the user 3, and the user 4. .
  • a specific embodiment of the present invention further provides a method for receiving a multi-user signal.
  • the precondition for implementing the method is that the user has completed a communication connection with the sender, and completes information interaction, and the information interaction includes: receiving by each user.
  • the modulation mode used by each user's signal sent to the transmitting end, each user also receives the mapping relationship between the user's signal transmitted by the transmitting end and the high-order modulation symbol, which is three
  • the user is used as an example to explain the specific way of information interaction.
  • User 1 receives the signal sent by the sender and sends it in GMSK modulation mode.
  • User 2 and user 3 receive the short transmission.
  • the signal is transmitted in a high-order modulation mode, and the user 2 also receives the bit of the high-order modulation symbol corresponding to the signal of the user 2, and the user 3 also receives the bit of the high-order modulation symbol corresponding to the signal of the user 3. .
  • the method is as shown in FIG. 5, and includes the following steps:
  • Step 51 Receive a GMSK signal and a high-order modulation signal
  • Step 52 according to the training sequence code (Training Sequence Code
  • step 54 TSC
  • the method for implementing the step may be: extracting, by using the respective TSC, the respective channel parameters from the received GMSK signal and the high-order modulated signal, for channel estimation and signal demodulation, thereby determining whether the GMSK signal belongs to itself. GMSK signal.
  • Step 53 Demodulate the GMSK signal to obtain a user signal
  • Step 54 Demodulate the high-order modulation symbols in the high-order modulation signal to obtain a user signal.
  • the method for implementing the step may be: demodulating the high-order modulation symbols, and obtaining the user information according to the mapping relationship in the previous information interaction.
  • Step A User 1, User 2, and User 3 complete the communication connection with the base station, and complete the information interaction;
  • the specific manner of implementing this step may be that user 1 receives its signal and uses GMSK, user 2 receives its signal and uses 16QAM, and its signal is mapped to the first and fourth bits corresponding to the 16QAM symbol, user 3 The signal is received with 16QAM, and its signal is mapped to the 2nd and 3rd bits corresponding to the 16QAM symbol.
  • Step B User 1, User 2, and User 3 receive the GMSK signal and the 16QAM signal sent by the base station;
  • Step C User 1 determines the GMSK signal according to the received TMSC in the GMSK signal and the 16QAM signal.
  • the 16 QAM signal can be a signal modulated by 16QAM modulation.
  • the receiving method provided by the specific factual manner of the present invention can demodulate the GMSK signal and the high-order modulation symbol of the same channel and acquire user information, thereby supporting the implementation of the method for sharing the same channel by the multiple users, and achieving multiple users. Signals share the same channel, increasing the advantage of the actual gain of system capacity.
  • a specific embodiment of the present invention further provides a device for sharing a same channel by multiple users.
  • the device as shown in FIG. 6, includes: a modulating unit 61, configured to minimize a signal of any one of a plurality of users by using Gaussian The frequency shift keying GMSK modulation mode is modulated into a GMSK signal;
  • the signals of the remaining users of the plurality of users are modulated into a high-order modulation signal by a high-order modulation method
  • the transmitting unit 62, the GMSK signal for modulating the modulation unit 61 and the high-order modulation signal are transmitted through the same channel.
  • the foregoing apparatus may further include: a control unit 63, configured to control a transmit power of the high-order modulated signal to be lower than a transmit power of the GMSK modulated signal.
  • a control unit 63 configured to control a transmit power of the high-order modulated signal to be lower than a transmit power of the GMSK modulated signal.
  • the apparatus for sharing the same channel by multiple users transmits signals of a plurality of users on the same channel through the transmitting unit 62, and controls the transmission power of the signals by the control unit 63, thereby realizing multi-user signal sharing.
  • the same channel increases the actual gain of system capacity.
  • the embodiment of the present invention further provides a device for receiving multi-user signals, as shown in FIG. 7, the device includes: a receiving unit 71, configured to receive a Gaussian minimum shift keying GMSK signal and a high-order modulation signal;
  • the determining unit 72 is configured to determine whether the required signal is a GMSK signal according to the training sequence code TSC; the first demodulating unit 73 is configured to: when the determining unit 72 determines that the GMSK signal is obtained, the user signal is obtained;
  • the second demodulation unit 74 is configured to demodulate the high-order modulation symbols in the high-order modulation signal to obtain the user signal if the determining unit 72 determines NO.
  • the specific manner of demodulation of the second demodulation unit 73 refer to the related description in the method for receiving the multi-user signal.
  • the device for receiving multi-user signals receives the Gaussian minimum shift keying GMSK signal and the high-order modulation signal through the receiving unit 71, and passes the judgment unit 72 to determine The first demodulating unit 73 and the second demodulating unit 74 demodulate the signal, thereby supporting the method in which the multiple users share the same channel and the implementation of the device in which multiple users share the same channel, thereby achieving the multi-user signal sharing the same channel. , the advantage of increasing the actual gain of the system capacity.
  • a specific embodiment of the present invention further provides a system in which multiple users share the same channel.
  • the system includes: a transmitting device 81 and a receiving device 82, and the transmitting device 81 is configured to use multiple users.
  • the signal of any one of the users is modulated into a GMSK signal by a Gaussian minimum shift keying GMSK modulation method; the signals of the remaining users of the plurality of users are modulated into a high-order modulation signal by a high-order modulation method; and the GMSK signal is And transmitting the high-order modulated signal through the same channel; wherein a transmit power of the high-order modulated signal is lower than a transmit power of the GMSK signal;
  • the receiving end device 82 is configured to receive the Gaussian minimum shift keying GMSK signal and the high order modulation signal sent by the transmitting end device 81; and determine whether the required signal is a GMSK signal according to the training sequence code TSC; if yes, demodulate The GMSK signal acquires a user signal; otherwise, the high-order modulation symbol in the high-order modulated signal is demodulated to acquire a user signal.
  • the system provided by the specific embodiment of the present invention transmits the signals of a plurality of users through the GMSK modulation mode and the high-order modulation mode by the transmitting end device 81, and then receives and demodulates the user information by the receiving end device 82, Thereby, the advantage of sharing the same channel by multi-user signals increases the actual gain of the system capacity.
  • the technical solution provided by the specific embodiment of the present invention sends signals of multiple users through the same channel through GMSK and high-order modulation, so that signals of multiple users share the same channel, and the The actual gain of the system capacity.

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Abstract

本发明实施方式提供了一种多用户共享同一信道的方法、装置及系统，所述方法、装置及系统属于通信领域，该方法包括：将多个用户中的任一用户的信号通过高斯最小移频键控GMSK调制方式调制成GMSK信号； 将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信号；将所述GMSK信号和所述高阶调制信号通过同一信道发送。本发明具体实施例还提供一种多用户信号的接收方法、装置及系统，该方法、装置及系统具有增加了系统容量的实际增益的优点。

Description

说明书 多用户共享同一信道的方法、 装置及系统
[1] 本申请要求于 2008年 9月 9日提交中国专利局， 申请号为 200810222104.1， 发明 名称为 "多用户共享同一信道的方法、 装置及系统"的中国专利申请的优先权， 其 全部内容通过弓 I用结合在本申请中。
[2] 技术领域
[3] 本发明涉及网络通信领域， 尤其涉及一种多用户共享同一信道的方法、 装置及 系统。
[4] 发明背景
[5] 全球移动通信系统 （Global System for Mobile
Communications , GSM) ， 是一种吋分复用的系统， 不同的用户占用不同的无 线信道资源， 每一个吋隙同吋只能有一个用户接入。 随着用户数量的不断增多 ， 系统中的无线信道资源也越来越少， 如何进一步提高系统的语音容量也是当 前研究的热点之一。
[6] 为了解决上述技术问题， 第三代合作伙伴计划 （the 3rd Generation Partner
Project, 3GPP) 组织在无线接入网络 (GSM/EDGE Raido Access
Network, GERAN) 第 35次会议上提出了在全速率业务上釆用正交子信道 （Orth ogonal Sub
Channels , OSC) 技术， 该技术提供了两个用户共享同一信道的方法， 该方法如 图 1所示， 包括如下步骤：
[7] 步骤 11、 发送端将两个用户的信号映射到同向分量、 正交分量两路发送， 并通 过不同的导频序列来区分用户；
[8] 实现该步骤的方法具体可以为， 通过正交相位调制 （Quadrature Phase Shift
Modulation
， QPSK) 调制方式将两个用户的信号映射到同向分量、 正交分量两路发送。
[9] 步骤 12、 接收端通过单天线干扰消除 （SAIC) 技术消除另外一个用户的干扰 以获得所需的信号。 [10] 在实现本发明的过程中， 发明人发现现有技术存在如下问题：
[11] 由于现有技术是在全速率业务上釆用 OSC技术， 所以其仅能在一个信道上复用 两个用户， 其无法复用两个以上的用户； 而如果在半速率业务上釆用 OCS技术， 虽然理论上可以复用四个用户， 但是由于每对复用用户使用的吋分多址 （Time Division Multiple Access
， TDMA) 帧数只是全速率的一半， 则需要较高的信干比才能保证通话质量， 而 在实际网络中满足上述信干比要求的用户较少， 导致在实际情况中无法釆用 OCS 技术无法在一个信道上无法复用两个以上的用户， 导致系统容量的实际增益较 小。
[12] 发明内容
[13] 鉴于上述现有技术所存在的问题， 本发明实施方式提供一种多用户共享同一信 道的方法、 装置及系统， 所述方法、 装置及系统， 能使得三个用户或三个以上 的用户能共享同一信道， 从而增加了系统容量的实际增益。
[14] 本发明的具体实施方式提供一种多用户共享同一信道的方法， 所述方法包括： [15] 将多个用户中的任一用户的信号通过高斯最小移频键控 GMSK调制方式调制成 GMSK信号；
[16] 将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信号； [17] 将所述 GMSK信号和所述高阶调制信号通过同一信道发送。
[18] 本发明具体实施方式还提供一种多用户信号接收的方法， 所述方法包括：
[19] 接收高斯最小移频键控 GMSK信号和高阶调制信号；
[20] 根据训练序列码 TSC判断其所需信号是否为 GMSK信号；
[21] 如是则解调 GMSK信号获取用户信号；
[22] 否则解调高阶调制信号中的高阶调制符号获取用户信号。
[23] 本发明具体实施方式又提供一种多用户共享同一信道的装置， 所述装置包括： [24] 调制单元， 用于将多个用户中的任一用户的信号通过高斯最小移频键控 GMSK 调制方式调制成 GMSK信号；
将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信号； [25] 发送单元， 用于将所述 GMSK信号和所述高阶调制信号通过同一信道发送。 [26] 本发明具体实施方式还提供一种多用户信号接收的装置， 所述装置包括：
[27] 接收单元， 用于接收高斯最小移频键控 GMSK信号和高阶调制信号；
[28] 判断单元， 用于根据训练序列码 TSC判断其所需信号是否为 GMSK信号；
[29] 第一解调单元， 用于在所述判断单元判断出是的情况下， 解调 GMSK信号获取 用户信号；
[30] 第二解调单元， 用于在所述判断单元判断出否的情况下， 解调高阶调制信号中 的高阶调制符号获取用户信号。
[31] 本发明具体实施方式还提供一种多用户共享同一信道的系统， 包括发送装置和 接收装置，
[32] 所述发送装置用于将多个用户中的任一用户的信号通过高斯最小移频键控 GMS K调制方式调制成 GMSK信号；
将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信号； 并将所述 GMSK信号和所述高阶调制信号通过同一信道发送； 所述高阶调制信号 的发送功率低于所述 GMSK信号的发送功率；
[33] 所述接收装置用于接收所述发送装置发送的高斯最小移频键控 GMSK信号和高 阶调制信号； 并根据训练序列码 TSC判断其所需信号是否为 GMSK信号； 如是则 解调 GMSK信号获取用户信号； 否则解调高阶调制信号中的高阶调制符号获取用 户信号。
[34] 由上述所提供的技术方案可以看出， 本发明实施例的技术方案通过釆用 GMSK 调制和高阶调制方式将三个或三个以上的用户信号通过同一信道发送， 从而实 现了三个用户或三个以上的用户能共享同一信道， 增加了系统容量的实际增益
[35] 附图简要说明
[36] 图 1为现有技术提供的两个用户共享同一信道的方法的流程图；
[37] 图 2为本发明具体实施方式提供的一种多用户共享同一信道的方法的流程图；
[38] 图 3为本发明一实施例提供的一种多用户共享同一信道的方法的流程图；
[39] 图 4为本发明另一实施例提供的一种多用户共享同一信道的方法的流程图；
[40] 图 5为本发明具体实施方式提供的一种多用户信号的接收方法的流程图； [41] 图 6为本发明具体实施方式提供的一种多用户共享同一信道的装置的结构图； [42] 图 7为本发明具体实施方式提供的一种多用户信号的接收装置的结构图；
[43] 图 8为本发明具体实施方式提供的一种多用户共享同一信道的系统的结构图。
[44] 实施本发明的方式
[45] 本发明实施方式提供了一种多用户共享同一信道的方法， 在本发明具体实施方 式， 如果不特殊说明， 多用户均表示三个或三个以上的用户， 该方法通过高斯 最小移步 建控 (Gaussian filtered Minimum Shift Keying
， GMSK) 调制方式和高阶调制的方式提供一种多用户共享同一信道的实现方法 ， 其具体实现方法可以为： 为了叙述的方便， 以三个用户为例， 并将三个用户 假设为用户 1、 用户 2和用户 3， 其实现的方法为， 将用户 1的信号通过 GMSK调制 方式调制成 GMSK信号， 将用户 2、 用户 3的信号通过高阶调制方式调制成高阶调 制信号， 然后将该 GMSK信号和该高阶调治信号通过同一信道发送。 假设用户的 数量为四个或以上用户， 则实现方法为， 将用户 1的信号通过 GMSK调制成 GMS K信号发送， 将剩余用户的信号通过高阶调制信号发送。 上述方法通过釆用 GMS K调制和高阶调制方式将三个或三个以上的用户信号通过同一信道发送， 从而实 现了三个用户或三个以上的用户能共享同一信道， 增加了系统容量的实际增益
[46] 本发明提供一实施例， 本实施例提供了一种多用户共享同一信道的方法， 如图
2所示， 该方法可以包括：
[47] 步骤 21、 将多个用户中的任一用户的信号通过 GMSK调制方式调制成 GMSK信 号；
[48] 步骤 22、 将多个用户中剩余用户的信号通过高阶调制方式调制成高阶调制信号
[49] 该剩余用户的信号可以为， 剩余用户的用户信息， 还可以为剩余用户的用户信 息和剩余用户的校验信息。 该校验信息可以为 turbo (特博） 编码， 卷积编码， 级联编码。 实现该步骤的方法可以为， 将剩余用户的信号通过高阶调制方式调 制， 并映射到高阶调制信号中的高阶调制符号对应的不同比特位发送， 具体的 映射方式可以参见具体实施例中的描述。 该高阶调制符号可以但不限于下述方 式， 8相相移位键控符号 （8 phase shift keying, 8PSK) 、 16相正交调幅 （16 quadrature amplitude modulation, 16QAM) 符号或 32相正交调幅 32QAM符号。
[50] 步骤 23、 将该 GMSK信号和该高阶调制信号通过同一信道发送。
[51] 在实施例中， 上述通过同一信道发送具体可以为将 GMSK信号和该高阶调制信 号复用到同一信道的正交子信道上发送。
[52] 上述步骤可以由发送端完成， 该发送端具体可以为基站。 发送端还可以根据需 要， 控制高阶调制信号的发送功率低于 GMSK信号的发送功率， 以保证接收端能 解调出 GMSK信号； 该控制发送功率的步骤位为可选择的步骤， 当信道的情况比 较好吋， 具体可以如信道的干扰比较小吋， 则无需进行发送功率的控制。
[53] 本发明提供又一实施例， 本实施例提供一种多用户共享同一信道的方法， 本实 施例的实现场景为， 用户的数量为 3个， 假设为用户 1、 用户 2和用户 3， 本实施 例所釆用的高阶调制方式为 16QAM, 其对应的符号为 16QAM符号， 在进行本实 施例的方法前， 各个用户与发送端已完成通信连接， 并进行了通信的相关信息 交互， 该通信的相关信息交互可以包括， 发送端通知用户 1其信号釆用 GMSK调 制方式发送， 发送端通知用户 2、 用户 3的信号釆用 16QAM调制方式， 并且通知 用户 2的信号映射在 16QAM符号对应的第 1、 3比特位， 用户 3的信号映射在 16QA M符号对应的第 2、 4比特位， 当然在实际情况中也可以为其他的映射关系。 该方 法如图 3所示， 包括如下步骤：
[54] 步骤 31、 将用户 1的信号通过 GMSK调制方式调制成 GMSK信号；
[55] 步骤 32、 将用户 2、 用户 3的信号通过 16QAM调制方式调制， 并将用户 2、 用户 3的信号映射到 16QAM符号对应的不同比特位；
[56] 实现该步骤的具体方法可以为， 将用户 2的信号映射在 16QAM符号对应的第 1 、 3比特位， 将用户 3的信号映射到 16QAM符号对应的第 2、 4比特位， 当然在实 际情况中， 也可以将用户 2的信号映射到 16QAM符号对应的第 1、 4比特位， 将用 户 3的信号映射到 16QAM符号对应的第 2、 3比特位发送， 当然还可以有其他的组 合方式， 这里就不一一例举。
[57] 该用户 2、 用户 3的信号可以为用户 2、 用户 3的用户信息， 还可以为用户 2、 用 户 3的用户信息和用户 2、 用户 3的校验信息， 当信号为用户 2、 用户 3的用户信息 和用户 2、 用户 3的校验信息吋， 实现该步骤的方法可以为， 将用户 2的用户信息 映射在 16QAM符号对应的第 1比特位， 将用户 2的校验信息映射在 16QAM符号对 应的第 3比特位； 将用户 3的用户信息映射在 16QAM符号对应的第 2比特位， 将用 户 3的校验信息映射在 16QAM符号对应的第 4比特位； 当然在实际情况中还可以 根据分配的比特位的不同， 将用户信息和校验信息映射在不同的比特位上， 但 映射的原则为， 将用户信息映射在高可靠位的比特位上， 将校验信息映射在低 可靠位的比特位上。
[58] 步骤 33、 将该 GMSK信号和 16QAM符号通过同一信道发送。
[59] 上述 16QAM符号的发送功率低于 GMSK的发送功率。
[60] 本实施例将用户 1的信号通过 GMSK调制方式发送， 将用户 2、 用户 3的信号通 过 16QAM调制方式发送， 使得用户 1、 用户 2和用户 3的信号共享同一信道， 增加 了系统容量的实际增益， 且该方法通过在用户 2、 用户 3的信号内增加校验信息 ， 从而能有效的检验用户 2、 用户 3的信号传输准确性。
[61] 本发明提供另一实施例， 本实施例提供一种多用户共享同一信道的方法， 本实 施例的实现场景为， 用户的数量为 4个， 假设为用户 1、 用户 2、 用户 3和用户 4， 本实施例所釆用的高阶调制方式为 32QAM, 其对应的符号为 32QAM符号， 在进 行本实施例的方法前， 各个用户与发送端已完成通信连接， 并进行了通信的相 关信息交互， 该通信的相关信息交互可以包括， 发送端通知用户 1其信号釆用 G MSK调制方式发送， 发送端通知用户 2、 用户 3、 用户 4其信号釆用 32QAM调制 方式， 并且通知用户 2的信号映射在 32QAM符号对应的第 1比特位， 用户 3的信号 映射在 32QAM符号对应的第 2、 5比特位， 用户 4的信号映射在 32QAM符号对应 的第 3、 4比特位， 当然在实际情况中也可以为其他的映射关系。 该方法如图 4所 示， 包括如下步骤：
[62] 步骤 41、 将用户 1的信号通过 GMSK调制方式调制成 GMSK信号；
[63] 步骤 42、 将用户 2、 用户 3和用户 4的信号通过 32QAM调制方式调制， 并将用户 2、 用户 3、 用户 4的信号映射到 32QAM符号对应的不同比特位。
[64] 实现该步骤的方法可以为， 方式 A、 将用户 2的信号映射在 32QAM符号对应的 第 1比特位， 将用户 3的信号映射在 32QAM符号对应的第 2、 5比特位， 将用户 4的 信号映射在 32QAM符号对应的第 3、 4比特位发送；
[65] 当然在实际情况中， 根据比特位的分配情况， 也可以有其他的实现方式， 如方 式8、 将用户 2的信号映射在 32QAM符号对应的第 1比特位， 将用户 3的信号映射 在 32QAM符号对应的第 2、 4比特位， 将用户 4的信号映射在 32QAM符号对应的 第 3、 5比特位发送；
[66] 当然在实际情况中， 还可以有其他的分配方式， 这里就不在赞述。
[67] 该用户的信号可以为用户的用户信息， 还可以为用户的用户信息和用户的校验 信息， 当为用户的用户信息和用户的校验信息， 当如方式 A的分配方式发送吋， 实现该步骤的方法可以为， 将用户 2的用户信息和用户 2的校验信息映射在 32QA M符号对应的第 1比特位， 将用户 3的用户信息映射在 32QAM符号对应的第 2比特 位， 将用户 3的校验信息映射在 32QAM符号对应的第 5比特位， 将用户 4的用户信 息映射在 32QAM符号对应的第 3比特位， 将用户 4的校验信息映射在 32QAM符号 对应的第 4比特位。 当然在实际情况中还可以根据分配的比特位的不同， 将用户 信息和校验信息映射在不同的比特位上， 其映射的原则和步骤 32的映射原则一 样， 这里就不在赞述。
[68] 步骤 43、 将该 GMSK信号和 32QAM符号通过同一信道发送。 其中 32QAM的发 送功率低于 GMSK的发送功率。
[69] 本实施例将用户 1的信号通过 GMSK调制方式发送， 而将用户 2、 用户 3和用户 4 的信号通过 32QAM调制方式发送， 使得用户 1、 用户 2、 用户 3和用户 4的信号共 享同一信道， 增加了系统容量的实际增益， 且该方法通过在用户 2、 用户 3和用 户 4的信号内增加校验信息， 从而能有效的检验用户 2、 用户 3和用户 4的信号传 输准确性。
[70] 本发明具体实施方式还提供一种多用户信号的接收方法， 实现该方法的前提条 件是， 用户已与发送端完成通信连接， 并完成了信息交互， 该信息交互包括， 各个用户接收到发送端发送的各个用户的信号所釆用的调制方式， 各个用户还 接收到发送端发送的釆用高阶调制方式的用户的信号与高阶调制符号的比特位 的映射关系， 这里以三个用户为例来说明信息交互的具体方式， 用户 1接收到发 送端发送的其信号釆用 GMSK调制方式发送， 用户 2、 用户 3接收到发送短发送的 其信号釆用高阶调制方式发送， 并且用户 2还接收到用户 2的信号所对应的高阶 调制符号的比特位， 用户 3还接收到用户 3的信号所对应的高阶调制符号的比特 位。 该方法如图 5所示， 包括如下步骤：
[71] 步骤 51、 接收 GMSK信号和高阶调制信号；
[72] 步骤 52、 根据训练序列码 （Training Sequence Code
， TSC) 判断其所需信号是否为 GMSK信号， 如是进行步骤 53， 否则进行步骤 54
[73] 实现该步骤的方法可以为， 利用各自的 TSC从接收 GMSK信号、 高阶调制信号 中提取属于各自的信道参数， 用于信道估计和信号解调， 从而判断该 GMSK信号 是否属于自己的 GMSK信号。
[74] 步骤 53、 解调 GMSK信号获取用户信号；
[75] 步骤 54、 解调高阶调制信号中的高阶调制符号获取用户信号。
[76] 实现该步骤的方法可以为， 解调高阶调制符号， 并根据前期信息交互中的映射 关系获知用户信息。
[77] 为了更好的说明上述方法的实现方式， 下面以一个实际例子来说明， 假设有 3 个用户， 用户 1、 用户 2、 用户 3， 假设用户 1的信号釆用 GMSK, 用户 2、 用户 3的 信号釆用 16QAM, 用户 2的信号映射 16QAM符号对应的第 1、 4比特位， 用户 3的 信号映射在 16QAM符号对应的第 2、 3比特位， 该发送端为可以为基站， 则实现 上述方法的步骤可以为，
[78] 步骤 A、 用户 1、 用户 2和用户 3与基站完成通信连接， 并完成信息交互；
[79] 实现该步骤的具体方式可以为， 用户 1接收到其信号釆用 GMSK, 用户 2接收到 其信号釆用 16QAM, 并且其信号映射在 16QAM符号对应的第 1、 4比特位， 用户 3接收到其信号釆用 16QAM, 并且其信号映射在 16QAM符号对应的第 2、 3比特 位。
[80] 步骤 B、 用户 1、 用户 2和用户 3接收基站发送的 GMSK信号和 16QAM信号； [81] 步骤 C、 用户 1根据接收到 GMSK信号和 16QAM信号中的 TSC判断出该 GMSK信 号为其所需的信号， 并对该 GMSK信号进行解调获取用户信号； 用户 2根据接收 到 GMSK信号和 16QAM信号中的 TSC判断出该 GMSK信号不是其所需的信号， 并 对 16QAM信号中的 16QAM符号进行解调， 并提取解调后的 16QAM符号对应的 第 1、 4比特位作为用户信号； 用户 3根据接收到 GMSK信号和 16QAM信号中的 TS C判断出该 GMSK信号不是其所需的信号， 并对 16QAM信号中的 16QAM符号进 行解调， 并提取解调后的 16QAM符号对应的第 2、 3比特位作为用户信号。 该 16 QAM信号可以为通过 16QAM调制方式调制成的信号。
[82] 本发明具体事实方式提供的接收方法能够对同一信道的 GMSK信号和高阶调制 符号进行解调并获取用户信息， 从而支持了上述多用户共享同一信道的方法的 实现， 达到了多用户信号共享同一信道， 增加了系统容量的实际增益的优点。
[83] 本发明具体实施方式还提供一种多用户共享同一信道的装置， 该装置如图 6所 示， 包括： 调制单元 61， 用于将多个用户中的任一用户的信号通过高斯最小移 频键控 GMSK调制方式调制成 GMSK信号；
将多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信号；
[84] 发送单元 62， 用于将调制单元 61调制成的该 GMSK信号和该高阶调制信号通过 同一信道发送。
[85] 可选的， 上述装置还可以包括： 控制单元 63， 用于控制该高阶调制信号的发送 功率低于该 GMSK调制信号的发送功率。
[86] 本发明具体实施方式提供的多用户共享同一信道的装置通过发送单元 62将多个 用户的信号在同一信道发送， 并通过控制单元 63控制信号的发送功率， 从而实 现了多用户信号共享同一信道， 增加了系统容量的实际增益。
[87] 本发明具体实施方式还提供一种多用户信号接收的装置， 该装置如图 7所示， 包括： 接收单元 71， 用于接收高斯最小移频键控 GMSK信号和高阶调制信号； 判 断单元 72， 用于根据训练序列码 TSC判断其所需信号是否为 GMSK信号； 第一解 调单元 73， 用于在判断单元 72判断出是的情况下， 解调 GMSK信号获取用户信号 ； 第二解调单元 74， 用于在判断单元 72判断出否的情况下， 解调高阶调制信号 中的高阶调制符号获取用户信号。 上述第二解调单元 73解调的具体方式可以参 见上述多用户信号的接收方法中的相关描述。
[88] 本发明具体实施方式提供的多用户信号接收的装置， 通过接收单元 71接收高斯 最小移频键控 GMSK信号和高阶调制信号， 并通过判断单元 72进行判断后， 通过 第一解调单元 73和第二解调单元 74对信号进行解调， 从而支持了上述多用户共 享同一信道的方法和多用户共享同一信道的装置的实现， 从而达到了多用户信 号共享同一信道， 增加了系统容量的实际增益的优点。
[89] 本发明具体实施方式还提供一种多用户共享同一信道的系统， 该系统如图 8所 示， 包括： 发送端装置 81和接收端装置 82， 发送端装置 81用于将多个用户中的 任一用户的信号通过高斯最小移频键控 GMSK调制方式调制成 GMSK信号； 将该多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信号； 并 将该 GMSK信号和该高阶调制信号通过同一信道发送； 其中高阶调制信号的发送 功率低于所述 GMSK信号的发送功率；
[90] 接收端装置 82用于接收发送端装置 81发送的高斯最小移频键控 GMSK信号和高 阶调制信号； 并根据训练序列码 TSC判断其所需信号是否为 GMSK信号； 如是则 解调 GMSK信号获取用户信号； 否则解调高阶调制信号中的高阶调制符号获取用 户信号。
[91] 本发明具体实施方式所提供的系统， 通过发送端装置 81将多个用户的信号通过 GMSK调制方式和高阶调制方式发送后， 通过接收端装置 82接收并进行解调获取 用户信息， 从而实现了将多用户信号共享同一信道， 增加了系统容量的实际增 益的优点。
[92] 综上所述， 本发明具体实施方式提供的技术方案， 通过 GMSK和高阶调制的方 式将多个用户的信号通过同一信道发送， 从而使得多个用户的信号共享同一信 道， 增加了系统容量的实际增益。
[93] 以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不局限于 此， 任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内， 可轻 易想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保 护范围应该以权利要求的保护范围为准。

Claims

权利要求书
[1] 一种多用户共享同一信道的方法， 其特征在于， 所述方法包括：
将多个用户中的任一用户的信号通过高斯最小移频键控 GMSK调制方式调 制成 GMSK信号；
将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信 号；
将所述 GMSK信号和所述高阶调制信号通过同一信道发送。
[2] 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括：
控制所述高阶调制信号的发送功率低于所述 GMSK信号的发送功率。
[3] 根据权利要求 1所述方法， 其特征在于， 所述将所述多个用户中的剩余用户 的信号通过高阶调制方式调制成高阶调制信号包括：
将所述剩余用户的信号分别映射到高阶调制信号中的高阶调制符号对应的 不同比特位中。
[4] 根据权利要求 1所述的方法， 其特征在于， 所述剩余用户的信号为：
剩余用户的用户信息；
或剩余用户的用户信息和剩余用户的校验信息。
[5] 根据权利要求 4所述的方法， 其特征在于， 所述校验信息为：
特博编码、 卷积编码或级联编码。
[6] 根据权利要求 3所述的方法， 其特征在于， 所述高阶调制符号包括：
8相相移键控 8PSK符号、 16相正交调幅 16QAM符号或 32相正交调幅 32QAM 符号。
[7] 一种多用户信号接收的方法， 其特征在于， 所述方法包括：
接收高斯最小移频键控 GMSK信号和高阶调制信号；
根据训练序列码 TSC判断其所需信号是否为 GMSK信号；
如是则解调 GMSK信号获取用户信号；
否则解调高阶调制信号中的高阶调制符号获取用户信号。
[8] —种多用户共享同一信道的装置， 其特征在于， 所述装置包括：
调制单元， 用于将多个用户中的任一用户的信号通过高斯最小移频键控 G MSK调制方式调制成 GMSK信号；
将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信 号；
发送单元， 用于将所述 GMSK信号和所述高阶调制信号通过同一信道发送
[9] 根据权利要求 8所述的装置， 其特征在于， 所述装置还包括：
控制单元， 用于控制所述高阶调制信号的发送功率低于所述 GMSK调制信 号的发送功率。
[10] 一种多用户信号接收的装置， 其特征在于， 所述装置包括：
接收单元， 用于接收高斯最小移频键控 GMSK信号和高阶调制信号； 判断单元， 用于根据训练序列码 TSC判断其所需信号是否为 GMSK信号； 第一解调单元， 用于在所述判断单元判断出是的情况下， 解调 GMSK信号 获取用户信号；
第二解调单元， 用于在所述判断单元判断出否的情况下， 解调高阶调制信 号中的高阶调制符号获取用户信号。
[11] 一种多用户共享同一信道的系统， 包括发送装置和接收装置， 其特征在于 所述发送装置用于将多个用户中的任一用户的信号通过高斯最小移频键控 GMSK调制方式调制成 GMSK信号；
将所述多个用户中的剩余用户的信号通过高阶调制方式调制成高阶调制信 号； 并将所述 GMSK信号和所述高阶调制信号通过同一信道发送； 所述高 阶调制信号的发送功率低于所述 GMSK信号的发送功率；
所述接收装置用于接收所述发送装置发送的高斯最小移频键控 GMSK信号 和高阶调制信号； 并根据训练序列码 TSC判断其所需信号是否为 GMSK信 号； 如是则解调 GMSK信号获取用户信号； 否则解调高阶调制信号中的高 阶调制符号获取用户信号。
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