WO2014015660A1 - 无线通信***的基带处理装置和无线通信*** - Google Patents
无线通信***的基带处理装置和无线通信*** Download PDFInfo
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Definitions
- Baseband processing device and wireless communication system of wireless communication system are Baseband processing device and wireless communication system of wireless communication system
- the present invention relates to the field of wireless communications, and more particularly to a baseband processing apparatus, a wireless communication system, and a baseband data processing method of a wireless communication system. Background technique
- Multi-point coordinated transmission (Coordinated Multiplepoint Transmission in English, abbreviated as CoMP) technology utilizes coordinated transmission between multiple cells to effectively solve the problem of cell edge interference, thereby improving cell edge and system throughput and expanding high-speed transmission coverage.
- CoMP transmission includes downlink CoMP transmission and uplink CoMP reception.
- Uplink CoMP reception improves the cell edge user throughput through the joint reception of user data by multiple cells;
- downlink CoMP transmission can be divided into joint processing according to whether the service data can be obtained at multiple collaboration points (in English, Joint Processing, abbreviated as JP) and Coordinated Scheduling/Beam forming (abbreviated as CS/CB). Joint processing can obtain transmission gain, while cooperative scheduling/beamforming can reduce inter-cell interference.
- JP Joint Processing
- CS/CB Coordinated Scheduling/Beam forming
- Explicit feedback means that the terminal does not pre-process the user channel state information and feed back information such as channel coefficients.
- the implicit feedback refers to the terminal pre-processing the user channel state information to the base station under certain assumptions, such as precoding matrix indication information and channel rank information.
- TDD Time Division Duplex
- the reciprocity of the channel can also be utilized according to the SRS sent by the terminal to obtain equivalent downlink user channel state information.
- BBUs Broad Band Units
- RRU Remote Radio Unit
- the data transmission rate on the CPRI port increases linearly with the number of antennas and system bandwidth, such as long-term evolution.
- LTE Long Term Evolution
- the system bandwidth is 20MHz, 8 antennas are used, and the transmission traffic reaches 10 Gbps.
- Such high transmission bandwidth requirements pose a great challenge to the transmission network of the existing access layer. Operators with insufficient resources have difficulty deploying.
- a variety of techniques have emerged, but the lack of such a technique can both reduce the transmission bandwidth on the CPRI and simultaneously obtain the system capacity gain. Summary of the invention
- Embodiments of the present invention provide a baseband processing apparatus and a wireless communication system of a wireless communication system, which are capable of reducing a transmission bandwidth between baseband processing units while obtaining a system capacity gain.
- a baseband processing apparatus for a wireless communication system including a first unit and a second unit that implement different baseband processing functions, wherein the second unit is configured to generate a downlink multipoint coordinated transmission (CoMP) user pre-
- the coding matrix generates precoding control information according to the precoding matrix, and sends precoding control information to the first unit.
- the first unit is configured to receive precoding control information sent by the second unit, and obtain uplink user data and downlink user data. And performing downlink joint baseband processing on the downlink CoMP user data in the downlink user data according to the precoding control information to generate the jointly transmitted baseband data for wireless transmission; the first unit is further configured to send the uplink CoMP user data in the uplink user data.
- the second unit is further configured to perform uplink joint baseband processing for the uplink CoMP user data sent by the first unit to generate non-physical layer processed user data.
- the first unit specifically includes a receiving module, a codec module, and a sending module: the receiving module is configured to receive precoding control information sent by the second unit The codec module of the first unit is configured to perform precoding processing to generate a joint transmission according to downlink CoMP user data in downlink user data and precoding control information sent by the second unit received by the receiving module.
- the baseband data is used for wireless transmission; the sending module of the first unit is configured to send uplink CoMP user data in the uplink user data before demodulation to the second unit.
- the second unit specifically includes a receiving module, a demodulation module, a decoding module, a precoding matrix generating module, a control information generating module, and a transmitting module: the receiving module of the second unit receives the uplink CoMP user data sent by the first unit; the demodulating module demodulates the uplink CoMP user data received by the receiving module, and demodulates the Data is sent to the decoding module; the decoding module decodes the demodulated data sent by the demodulation module, to send the decoded data to a functional unit at the MAC layer and above, The function layer of the MAC layer and above is used to implement a protocol function of the non-physical layer; the precoding matrix generating module generates a CoMP precoding matrix according to the user channel state information and sends the same to the control information generating module; the control information generating module Generating precoding control information according to the CoMP precoding matrix, and transmitting the information to the sending module; and sending,
- the user channel state information used by the precoding matrix generating module of the second unit includes one of the following information or Multiple: channel coefficients fed back by the terminal, precoding matrix indication information fed back by the terminal, channel rank information fed back by the terminal, and downlink channel coefficients estimated by channel reciprocity according to the uplink sounding reference signal transmitted by the terminal.
- the first unit is further configured to perform downlink baseband processing on downlink non-CoMP user data in downlink user data acquired from a network side to generate wirelessly transmitted baseband data.
- the first unit is further configured to perform uplink baseband processing on the uplink non-CoMP user data in the uplink user data received from the air interface, and send the processed data to the MAC layer and the above functional unit, where the MAC layer and The above functional units are used to implement protocol functions of the non-physical layer.
- a wireless communication system in a second aspect, includes a centralized processing node and a transceiver node, wherein the centralized processing node includes a second unit of the baseband processing device and a medium access control (MAC) layer and above a unit, wherein the MAC layer of the central processing node and the above functional unit are used to implement a protocol function of the non-physical layer, and the transceiver node includes the first unit and the radio unit of the baseband processing device, where the radio unit is configured to receive the first unit Generating the jointly transmitted baseband data to generate a wireless signal and transmitting and receiving a wireless signal, and the first unit of the transceiver node and the second unit of the centralized processing node implement different baseband processing functions, and the functional units of the MAC layer and above are also used for
- the second unit receives the uplink baseband processed uplink CoMP user data, receives the uplink baseband processed uplink non-CoMP user data from the first unit, and sends the downlink CoMP
- the radio unit is used to implement the first unit and the second unit for generating and transmitting the wireless signal and centrally processing the node for Implementing different baseband processing functions
- the transceiver node includes the first unit of the foregoing baseband processing apparatus, the radio frequency unit, and the MAC layer and the above functional units, wherein the MAC layer of the transceiver node and the above functional unit are used to implement a protocol of the non-physical layer.
- the function is further configured to receive the uplink baseband processed uplink CoMP user data from the second unit, receive the uplink baseband processed uplink non-CoMP user data from the first unit of the transceiver node, and send the downlink user data to the first unit of the transceiver node.
- Central African CoMP user data, RF unit is used to generate and send and receive wireless signals and receive First node and second units to focus on different nodes of the baseband processing function implemented.
- the third aspect provides a baseband data processing method, configured to process baseband data in a wireless communication system, where the method includes: acquiring uplink user data and downlink user data; and generating downlink coordinated multi-point transmission (CoMP) by using a second unit.
- a precoding matrix of the user generating precoding control information according to the precoding matrix; transmitting precoding control information to a first unit, the first unit and the second unit are independently set; and using the first unit according to the precoding control information for the downlink user
- the downlink CoMP user data in the data performs downlink joint baseband processing to generate jointly transmitted baseband data for wireless transmission; the first unit transmits uplink CoMP user data in the uplink user data to the second unit, and uses the second unit pair
- the uplink CoMP user data sent by one unit completes the uplink joint baseband processing to generate user data of the uplink transmission processed by the non-physical layer.
- the performing, by using the second unit, the uplink baseband processing of the uplink CoMP user data sent by the first unit specifically: the second unit demodulating the uplink CoMP user data, Demodulated data; the second unit decodes the demodulated data to transmit the decoded data to the MAC layer and above functional units, and the MAC layer and above functional units are used to implement the non-physical layer Protocol function.
- a baseband data processing method for processing baseband data in a wireless communication system, the method comprising: generating a precoding matrix of a downlink coordinated multi-point transmission (CoMP) user, and generating precoding control according to the precoding matrix Transmitting, to the first unit, precoding control information, so that the first unit performs downlink joint baseband processing on the downlink CoMP user data in the downlink user data according to the precoding control information to generate jointly transmitted baseband data for wireless transmission; First The uplink CoMP user data in the uplink user data sent by one unit performs uplink joint baseband processing on the uplink CoMP user data sent by the first unit to generate user data of the uplink transmission processed by the non-physical layer.
- CoMP coordinated multi-point transmission
- performing uplink joint baseband processing on the uplink CoMP user data sent by the first unit specifically, including: demodulating uplink CoMP user data to obtain demodulated data;
- the demodulated data is decoded to transmit the decoded data to the MAC layer and above functional units, and the MAC layer and above functional units are used to implement the non-physical layer protocol function.
- the fifth aspect provides a baseband data processing method, configured to process baseband data in a wireless communication system, where the method includes: receiving precoding control information sent by a second unit, and targeting the downlink user data according to the precoding control information.
- the uplink CoMP user data completes uplink joint baseband processing to generate user data for non-physical layer processing through the media access control (MAC) layer and above functional units.
- MAC media access control
- performing downlink joint baseband processing on downlink multi-point coordinated transmission CoMP user data in downlink user data according to precoding control information to generate jointly transmitted baseband data for wireless transmission includes: performing precoding processing according to downlink CoMP user data and precoding control information in the downlink user data to generate jointly transmitted baseband data for wireless transmission.
- Embodiments of the present invention may provide a baseband processing apparatus, a wireless communication system, and a baseband data processing method of a wireless communication system.
- the first unit and the first unit in the baseband processing apparatus are provided.
- the two units cooperate to implement the CoMP baseband processing function, and the downlink precoding control information and the uplink CoMP user data are transmitted between the first unit and the second unit, and the transmission bandwidth is much smaller than between the first unit and the second unit.
- the transmission bandwidth required for transmitting the precoded data thus enabling the wireless communication system using the above apparatus to reduce the transmission bandwidth between the baseband processing device units while obtaining the system capacity gain.
- FIGS. 1A and 1B are schematic block diagrams of a baseband processing apparatus of a wireless communication system according to an embodiment of the present invention.
- FIGS. 2A and 2B are schematic block diagrams of a wireless communication system in accordance with an embodiment of the present invention.
- FIG. 3 is a schematic flow chart of a baseband processing method of a wireless communication system according to an embodiment of the present invention.
- 4 is a schematic diagram of a baseband processing method of a wireless communication system according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of a baseband processing method of a wireless communication system according to another embodiment of the present invention.
- Fig. 6 is a schematic diagram showing a method of generating a precoding matrix and precoding control information according to an embodiment of the present invention. detailed description
- the technical solution of the present invention can be applied to various MIMO (Multiple Input Multiple Output) communication systems, for example, a system of Wideband Code Division Multiple Access (WCDMA), such as a high speed downlink packet.
- WCDMA Wideband Code Division Multiple Access
- HSDPA High-Speed Downlink Packet Access
- LTE Long Term Evolution
- WiMAX Worldwide Interoperability for Microwave Access
- WiFi Wireless Bandwidth
- a user equipment which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
- the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
- the wireless access network exchanges languages and/or data.
- the base station may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolved Node B) in LTE or a base station (Base Station) in WiMAX.
- NodeB base station
- eNB evolved base station
- Base Station Base Station
- the present invention is not limited, but for convenience of description, the following embodiments are described by taking an e-Node B as an example.
- system and “network” are used interchangeably herein.
- the term “and/or” in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B These three situations.
- the character "/" in this article generally means that the contextual object is an "or" relationship.
- Embodiments of the present invention provide a baseband processing apparatus in which baseband processing units can be included in different nodes in a wireless communication system, thereby reducing transmission bandwidth between baseband processing units, and can support CoMP.
- Fig. 1A is a block diagram of a baseband processing device 10 of a wireless communication system according to an embodiment of the present invention. As shown
- the baseband processing apparatus 10 includes a first unit 11 and a second unit 15 that respectively implement different baseband processing functions.
- a second unit configured to generate a precoding matrix of the downlink CoMP user, generate the precoding control information according to the precoding matrix, and send the precoding control information to the first unit.
- a first unit configured to receive precoding control information sent by the second unit, and obtain uplink user data and downlink user data, and perform downlink association for downlink CoMP user data in downlink user data according to the precoding control information.
- Baseband processing to generate jointly transmitted baseband data for wireless transmission; the first unit is further configured to send uplink CoMP user data in the uplink user data to the second unit.
- the downlink user data is obtained by the first unit from a network side such as an RNC (Radio Network Controller).
- the radio unit of the system receives uplink user data from the air interface, and the first unit acquires uplink user data from the radio unit.
- the second unit is further configured to perform uplink joint baseband processing on the uplink CoMP user data sent by the first unit to generate non-physical layer processed uplink transmission user data, specifically, to generate media access control (MAC).
- MAC media access control
- the functional units of the layer and above perform user data of the uplink transmission that is not processed by the physical layer.
- CoMP user data refers to data used for CoMP technology processing, including uplink CoMP user data and downlink CoMP user data.
- the uplink CoMP user data is a union of user data received by a plurality of cells.
- the downlink CoMP user data is user data for joint transmission of a plurality of cells.
- scheduling information or control information indicating that the data is CoMP user data.
- Embodiments of the present invention provide a baseband processing apparatus, which is implemented by a cooperation between a first unit and a second unit in a baseband processing apparatus according to an architecture of a first unit and a second unit in a baseband processing apparatus.
- CoMP baseband processing function thereby reducing inter-cell interference, improving system spectral efficiency, especially edge user throughput, and obtaining system capacity gain; and simultaneously implementing baseband processing in two units, so that the wireless communication system using the above device can
- the transmission bandwidth between the two baseband processing units is reduced with minimal transmission traffic, greatly reducing the need for transmission.
- the device and the technical solution realize the uplink and downlink CoMP with the minimum transmission traffic, reduce the deployment cost of the CoMP, and at the same time obtain the beneficial effects of reducing inter-cell interference and improving the spectrum efficiency of the system, especially the edge user.
- the first unit is further configured to perform downlink baseband processing on downlink non-CoMP user data in the downlink user data acquired from the network side to generate wirelessly transmitted baseband data.
- the first unit is further configured to perform uplink baseband processing on the uplink non-CoMP user data in the uplink user data received from the air interface, and send the processed data to the MAC layer and the foregoing functional unit, where
- the functional units of the MAC layer and above are used to implement protocol functions of the non-physical layer.
- the first unit 11 of the device 10 specifically includes a receiving module 110, a codec module 111, and a sending module 112.
- the receiving module 110 is configured to receive downlink CoMP user data in downlink user data and precoding control information sent by the second unit.
- the codec module 111 of the first unit is configured to perform precoding processing according to the downlink CoMP user data in the downlink user data received by the receiving module and the precoding control information sent by the second unit to generate a joint sending.
- the baseband data is used for wireless transmission.
- the transmitting module 112 of the first unit transmits uplink CoMP user data in the uplink user data before demodulation to the second unit.
- the second unit 15 of the device 10 specifically includes a receiving module 150, a demodulation module 151, a decoding module 152, a precoding matrix generating module 153, a control information generating module 154, and a sending module 155.
- the receiving module 150 of the second unit receives the uplink CoMP user data sent by the first unit.
- the demodulation module 151 demodulates the uplink CoMP user data received by the receiving module 150 and transmits the demodulated data to the decoding module.
- the decoding module 152 decodes the demodulated data sent by the demodulation module and translates the The coded data is sent to the MAC layer and above functional units, and the MAC layer and above functional units are used to implement non-physical layer protocol functions.
- the precoding matrix generation module 153 generates a CoMP precoding matrix based on the channel state information and transmits it to the control information generating module.
- the control information generating module 154 generates precoding control information according to the CoMP precoding matrix, and sends the precoding control information to the sending module.
- the transmitting module 155 transmits the precoding control information to the first unit.
- the user channel state information used by the precoding matrix generating module 153 of the second unit includes one or more of the following information: a channel coefficient fed back by the terminal, and a precoding matrix indication information fed back by the terminal, The channel rank information fed back by the terminal, and the downlink channel coefficient obtained by using channel reciprocity according to the uplink sounding reference signal transmitted by the terminal.
- the baseband processing apparatus of the embodiments of the present invention can be implemented in a wireless communication system of different architectures for different application scenarios.
- 2A and 2B are schematic block diagrams of a wireless communication system 20 in accordance with an embodiment of the present invention.
- the wireless communication system 20 includes a centralized processing node 21 and a receiving node 22.
- the centralized processing node 21 includes a second unit 15 of the baseband processing device 10 and a MAC layer and above functional units 23, wherein the MAC layer of the centralized processing node and the above functional units are used to implement a non-physical layer. Protocol function.
- the functional units at the MAC layer and above implement the protocol above the data link layer and the data link layer in the network seven-layer protocol, and can physically correspond to one or more units.
- the functional units of the MAC layer and the above are defined as one functional unit, but the embodiment of the present invention does not limit this.
- the transceiver node 22 includes a first unit 11 and a radio frequency unit 24 of the baseband processing device, where the radio frequency unit is configured to implement generating and transmitting a wireless signal, and the first unit of the transceiver node and the centralized processing node
- the second unit implements different baseband processing functions.
- the wireless communication system 20 includes a centralized processing node 21 and a transceiver node 22.
- the centralized processing node 21 includes a first unit 11, a second unit 15, a MAC layer and a functional unit 23 and a radio frequency unit 24 of the baseband processing device 10, wherein the MAC layer of the central processing node and the above
- the functional unit is configured to implement a protocol function of a non-physical layer for implementing generation and transmission of wireless signals and the first unit and the second unit of the centralized processing node are used to implement different baseband processing functions.
- the transceiver section Point 22 includes a first unit 11, a radio frequency unit 24, and a MAC layer and above functional units 23 of the baseband processing device, wherein a MAC layer of the transceiver node and functional units above are used to implement a protocol function of a non-physical layer,
- the radio frequency unit is configured to implement generating and transceiving a wireless signal, and the first unit of the transceiver node and the second unit of the centralized processing node implement different baseband processing functions.
- the first unit 11 and the second unit 15 pass an IP network, an Ethernet network,
- PON Passive Optical Network in English, passive optical network in Chinese
- WDM wavelength division multiplexing in English, wavelength division multiplexing in Chinese
- the implementation process of the downlink CoMP in the embodiment of the present invention includes the following contents.
- the centralized processing node performs user downlink information transmission as needed, and instructs the transmitting and receiving node to upload the user channel state information to the centralized processing node, and the user channel state information (in English)
- Channel State Information may be information such as channel coefficients that are explicitly fed back by the terminal, or information such as precoding matrix indication information and channel rank implicitly fed back by the terminal, or based on uplink sounding reference signals in the TDD system. Downstream channel coefficients obtained by channel reciprocity estimation, and the like.
- the precoding matrix generating module 153 of the central processing node generates a precoding matrix of a downlink CoMP user by using the acquired user channel state information 61 and the scheduling information 63 output by the radio resource management module 62, which is also called CoMP precoding matrix
- the context of the cylinder is called a precoding matrix, such as 7 transceiver nodes, each transceiver node has 4 antennas, jointly send 6 data streams, generate a 28x6 precoding matrix
- the scheduling information includes, for example: Downlink CoMP User information included, time-frequency resources used, antennas used, etc., can be managed by radio resources (RRM,
- Radio Resources Management module output. 6 is a schematic diagram of a method for generating a precoding matrix and precoding control information according to an embodiment of the present invention.
- the precoding matrix generating module performs different operations according to the input user channel state information. If the channel matrix has not been generated, the channel matrix is first generated from the input user channel state information, and then the precoding matrix is generated from the channel matrix. For the sake of cleaning, this mode is omitted in the drawings.
- the control information generating module 154 of the central processing node generates precoding control information 64 for each downlink CoMP transceiving node by using the precoding matrix and scheduling information 63 generated by the precoding matrix generating module 153.
- the sending module of the processing node and the downlink CoMP user data are sent together to each transceiver node, wherein the precoding control information may include a precoding moment Array vector and indication information.
- the precoding matrix vector is a vector extracted from the precoding matrix corresponding to each downlink CoMP transceiver node antenna.
- the indication information is part of the scheduling information, and is used to indicate that the codec module of the first unit pre-codes the downlink CoMP user data, and generates pre-coded data and then maps the data to the corresponding time-frequency resource. For example, if each transceiver node has 4 antenna scenes and 6 data streams, the size of the precoding matrix vector is 4x6, and the indication information includes downlink CoMP user data indication, codeword number, DMRS (English Demodulation Reference Signal, Chinese solution) Adjust the pilot frequency) Port number, etc.
- DMRS English Demodulation Reference Signal, Chinese solution
- the precoding control information may include an entire precoding matrix and indication information.
- the codec module of the transceiver node After transmitting the entire precoding matrix generated by the precoding matrix module of the central processing node to the transceiver node, the codec module of the transceiver node performs precoding, and extracts the encoded data corresponding to each transceiver antenna according to the precoding control information. , mapped to the corresponding time-frequency resource.
- control information generating module may be included as a functional module in the first unit or may be included in the second unit.
- the description of the drawings will be made by taking only the second unit including the control information generating module as an example.
- the transceiver node encodes and modulates the downlink CoMP user data, and then the codec module of the transceiver node pre-codes the corresponding downlink CoMP user data according to the received pre-coding control information of the downlink CoMP user, and finally generates a joint transmission for the joint transmission.
- Baseband data The transceiver node encodes and modulates the downlink CoMP user data, and then the codec module of the transceiver node pre-codes the corresponding downlink CoMP user data according to the received pre-coding control information of the downlink CoMP user, and finally generates a joint transmission for the joint transmission. Baseband data.
- the implementation process of the uplink CoMP in the embodiment of the present invention includes the following content.
- the centralized processing node instructs the transceiver node to separate and send the uplink through the sending module of the sending and receiving node.
- the receiving module of the centralized processing node receives the frequency domain data of the uplink CoMP user, and centrally processes the demodulation module and the decoding module of the node.
- the frequency domain data of the received uplink CoMP user is jointly demodulated and decoded.
- the first unit of the baseband processing device will receive the downlink non-transmission in the downlink user data from the network side.
- the CoMP user data performs downlink baseband processing to generate wirelessly transmitted baseband data, which includes, for example, channel coding, modulation, precoding, resource mapping, FFT, and insertion of CP.
- the first unit performs uplink baseband processing on the uplink non-CoMP user data in the uplink user data received from the air interface, and sends the processed data to the media access control (MAC) layer and above functional units.
- the functional units of the MAC layer and above are used to implement a protocol function of a non-physical layer, and the uplink baseband processing includes, for example, de-CP, IFFT, resource mapping, demodulation, decoding, and the like. deal with.
- the process of the uplink baseband processing and the downlink baseband processing of the non-CoMP user data is the same as that of the prior art, in order to highlight the joint processing of the uplink and downlink CoMP user data in the embodiment of the present invention, and the uplink and downlink processing process for the non-CoMP user data or The specific details of the corresponding functional modules are omitted here.
- the baseband processing of the non-CoMP user data can be performed in the first unit, and the first unit also performs precoding of the downlink CoMP user data, and is not directly transmitted through the radio unit, but can be reduced by the second unit.
- FIG. 3 is a schematic flow chart of a baseband processing method 30 of a wireless communication system according to an embodiment of the present invention.
- the apparatus for using the baseband processing method includes a first unit and a second unit that implement different baseband processing functions
- the second unit generates a precoding matrix of a downlink coordinated multi-point (CoMP) transmission user, according to the pre-
- the encoding matrix generates the precoding control information, and transmits the precoding control information to the first unit.
- CoMP downlink coordinated multi-point
- the first unit receives precoding control information sent by the second unit, and acquires uplink user data and downlink user data, and performs downlink information in the downlink user data according to the precoding control information sent by the second unit.
- the CoMP user data performs downlink joint baseband processing to generate jointly transmitted baseband data for transmission.
- the first unit sends uplink CoMP user data in the uplink user data to the second unit.
- the second unit performs uplink joint baseband processing on the uplink CoMP user data sent by the first unit to generate non-physical layer processed uplink transmission user data, specifically, to generate a medium access control (MAC) layer.
- the functional unit of the above performs non-physical layer processing uplink user data, and generates a precoding matrix of the downlink CoMP user, generates the precoding control information according to the precoding matrix, and sends the precoding control information to The first unit.
- the embodiment of the present invention provides a baseband processing method.
- the first unit and the second unit in the apparatus using the method cooperate to implement the CoMP baseband processing function, thereby reducing Small-area interference, improve system spectral efficiency, especially edge user throughput, gain system capacity gain; and baseband processing is implemented in two units, so that the wireless communication system using the above device can be reduced with minimum transmission traffic.
- the transmission bandwidth between the two baseband processing units greatly reduces the need for transmission.
- the method further includes: the first unit performs downlink baseband processing on downlink non-CoMP user data in downlink user data acquired from a network side to generate wirelessly transmitted baseband data; or the first unit pair slave
- the uplink non-CoMP user data in the uplink user data received by the air interface performs uplink baseband processing, and the processed data is sent to the MAC layer and above functional units, and the MAC layer and the above functional units are used to implement the non-physical layer. Protocol function.
- the first unit when the first unit specifically includes a receiving module, a codec module, and a sending module, the first unit performs, according to the precoding control information sent by the second unit, downlink user data in the downlink user data.
- the downlink combined baseband processing to generate the jointly transmitted baseband data for wireless transmission specifically includes: receiving, by the receiving module of the first unit, downlink CoMP user data in downlink user data and precoding control information sent by the second unit;
- the codec module of the first unit performs precoding processing to generate baseband data for joint transmission according to downlink CoMP user data in downlink user data and precoding control information sent by the second unit received by the receiving module.
- the transmitting unit of the first unit sends the uplink CoMP user data in the uplink user data before demodulation to the second unit.
- the second unit specifically includes a receiving module, a demodulation module, a decoding module, a precoding matrix generating module, a control information generating module, and a sending module
- the uplink CoMP user data completes the uplink joint baseband processing to generate the user data for performing the non-physical layer processing by the MAC layer and the above functional unit
- the method includes: receiving, by the receiving unit of the second unit, the uplink CoMP sent by the first unit User data; the demodulation module demodulates uplink CoMP user data received by the receiving module, and sends the demodulated data to the decoding module; the decoding module sends the demodulation module to The demodulated data is decoded and the decoded data is sent to the MAC layer and the above functional units, and the MAC layer and the above functional units are used to implement the protocol function of the non-physical layer.
- the second unit generates a precoding matrix of the downlink CoMP user, and generates the precoding control information according to the precoding matrix
- sending the precoding control information to the first unit specifically includes:
- the precoding matrix generating module generates a CoMP precoding matrix according to the user channel state information and sends the same to the control information generating module;
- the control information generating module generates precoding control information according to the CoMP precoding matrix, and sends the precoding control information to the sending The module sends the precoding control information to the first unit.
- the user channel state information includes one or more of the following information: a channel coefficient fed back by the terminal, a precoding matrix indication information fed back by the terminal, and channel rank information fed back by the terminal.
- the first unit and the second unit are interconnected by using an IP network, an Ethernet network, a PON, or a WDM network.
- a wireless communication system includes a centralized processing node and a transceiver node, where the centralized processing node includes a second unit of the foregoing baseband processing apparatus and a functional unit of a MAC layer and above, where a MAC layer of the central processing node and functions of the foregoing are performed.
- the unit is configured to implement a protocol function of the non-physical layer
- the transceiver node includes a first unit and a radio frequency unit of the foregoing baseband processing apparatus, where the radio frequency unit is configured to receive the jointly transmitted baseband data generated by the first unit to generate a wireless signal, and send and receive a wireless signal, and the first unit of the transceiver node and the second unit of the centralized processing node implement different baseband processing functions, and the functional units of the MAC layer and above are further configured to receive the uplink baseband processed uplink CoMP user data from the second unit, Receiving uplink baseband processed uplink non-CoMP user data from the first unit and transmitting downlink CoMP and downlink non-CoMP user data to the first unit.
- a wireless communication system includes a centralized processing node and a transceiver node, where the centralized processing node includes a first unit, a second unit, a MAC layer and above functional units and a radio frequency unit of the baseband processing apparatus, where the centralized processing node
- the MAC layer and above functional units are used to implement the non-physical layer protocol function, and are also used to receive the uplink baseband processed uplink CoMP user data from the second unit, and receive the uplink baseband processing from the first unit of the centralized processing node.
- the radio unit is configured to implement generation and transmission of wireless signals
- the first unit and the second unit of the central processing node are used to implement different The baseband processing function
- the transceiver node includes the first unit, the radio frequency unit, and the MAC layer and above functional units of the baseband processing apparatus, wherein the MAC layer of the transceiver node and the above functional unit are used to implement a protocol function of the non-physical layer, Also used to receive the combined baseband processing from the second unit Performing CoMP user data, receiving uplink baseband processed uplink non-CoMP user data from the first unit of the transceiver node, and transmitting non-CoMP user data in the downlink user data to the first unit of the transceiver node, and the radio unit is used for generating and transmitting and receiving wireless The signal and the first unit of the transceiver node and the second unit of the centralized
- a wireless communication system is selected to perform the description of the baseband processing method in the embodiment of the present invention.
- the LTE system is taken as an example, but the present invention is not limited thereto.
- the wireless communication system includes one centralized processing node and multiple transceiver nodes.
- the wireless communication system of FIG. 2A is taken as an example. Only the transceiver node includes the radio frequency unit, and only the centralized processing node includes the MAC layer and the above functional units.
- the second unit of the central processing node is also referred to in the context as the LI part b functional module.
- the functional layer of the MAC layer of the centralized processing node and the above functional unit are indicated by a reference numeral 23 in this document.
- a plurality of specific units, such as MAC may be included. It is Media Access Control, Chinese Media Access Control), RLC (Radio Link Control in English) and PDCP (Packet Data Convergence Protocol in English).
- the first unit of the transceiver node is also referred to as the LI part a function module in the context, and the codec module included in the first unit further includes some specific sub-modules that implement the baseband processing function in the prior art.
- the codec module of the first unit of the transceiver node implements channel coding, modulation, precoding, resource mapping, and FFT in DL (English is Down Link, Chinese is downlink) (English is Fast Fourier Transform, Chinese is Fast Fourier Transform) and Insert CP (Cyclic Prefix Insertion in English).
- the codec module of the first unit of the transceiver node implements the de-CP (English is Cyclic Prefix Remove), IFFT (English is Fast Fourier Inverse Transform, Chinese is Fast Fourier) in UL (English is Up Link, Chinese is Down). Inverse transform), resource inverse mapping, demodulation, decoding, and so on.
- de-CP International Cyclic Prefix Remove
- IFFT International Digital Transform
- UL Universal Link
- Inverse transform Inverse transform
- resource inverse mapping resource inverse mapping
- demodulation decoding
- decoding decoding
- the transmission network of the second unit of the centralized processing node and the first unit of the plurality of transceiver nodes may be an IP network, an Ethernet network, a PON or a WDM network, or the like.
- the downlink direction includes: precoding control information 41 and downlink user data and scheduling information 42 of the downlink CoMP user generated by the control information generating module 154, where the precoding control information includes a precoding matrix vector and scheduling information in the downlink COMP
- the indication information includes the downlink CoMP user data indication, the codeword number, the DMRS port number, and the like.
- the uplink direction includes: an uplink non-CoMP user decoded data stream 43; an uplink CoMP user before decoding the frequency domain data 44; user channel state information 45, wherein specifically, the user channel state information 45 may be included in the frequency domain. Obtained in data 44 or based on information in frequency domain data 44.
- the frequency domain data is obtained, and the sending module of the transmitting and receiving node uploads the frequency domain data of the separated uplink CoMP user before decoding to the centralized processing node.
- the first unit continues the baseband demodulation and decoding process for the non-uplink CoMP user, and sends it to the MAC layer and above functional units, which is the same as the prior art processing method.
- the demodulation module and the decoding module of the second unit perform joint baseband demodulation and decoding processing on the received frequency domain data of the uplink CoMP user.
- the user channel state information transmitted by the first unit to the second unit can be obtained by the following methods.
- the first unit demodulates and decodes the acquired and uploads; or After the resource is inversely mapped, the transceiver node separates the frequency domain data of the user channel state information and uploads it, and the second unit demodulates and obtains it; or in the TDD system, the user sends an uplink sounding reference signal (SRS), which is reversed by the resource.
- SRS uplink sounding reference signal
- the uplink sounding reference signal (SRS) is sent by the user
- the data of the SRS is separated by the inverse mapping of the resources of the first unit, and the channel estimation may be performed by the first unit, and the estimated The channel coefficient is uploaded to the second unit, as shown at 45 in FIG.
- the obtained uplink channel state information is also downlink channel state information.
- the downlink precoding control information and the uplink CoMP user data are transmitted between the first unit and the second unit, and the transmission bandwidth is much smaller than the transmission of the precoded data between the first unit and the second unit.
- the required transmission bandwidth According to the architecture of the first unit and the second unit, the embodiment of the first unit and the second unit cooperate to implement the CoMP baseband processing function by using the first unit of the transceiver node and the second unit of the centralized processing node, thereby reducing inter-cell interference and improving system spectrum efficiency, in particular Is the edge user's throughput, gaining system capacity gain; and baseband processing is implemented in two units, so that the wireless communication system using the above device can reduce the transmission bandwidth between the two baseband processing units with minimum transmission traffic. , greatly reducing the need for transmission.
- the transmission network between the first unit and the second unit in the embodiment of the present invention is different from the bandwidth required by the transmission network between the baseband processing unit (for example, the BBU) and the remote radio unit (for example, the RRU), which is the present invention.
- the architecture of the first unit and the second unit for baseband processing in the embodiment is determined, thereby avoiding excessive requirements for network transmission bandwidth between the BBU and the RRU.
- Embodiments of the present invention are preferably applicable to centralized processing, but may also reduce the bandwidth requirements of the access network.
- the uplink and downlink CoMP is implemented between the units of the baseband processing device with minimum transmission traffic. Reduce the cost of deploying CoMP.
- the wireless communication system may further include the application scenario of FIG. 5.
- Figure 5 is a diagram showing a baseband processing method of a wireless communication system according to another embodiment 50 of the present invention.
- the architecture of the wireless communication system of Embodiment 50 includes a plurality of base stations, such as base stations 51 to 53.
- the application scenario of the embodiment 50 mainly includes the following two scenarios: one is a base station convergence scenario of a macro base station and a small base station, wherein the small base station is directly connected to the macro base station through X2 or other interfaces, and the small base station user data is transparently transmitted through the macro base station.
- the macro base station is a centralized processing node
- the small base station is a transceiver node.
- Another scenario is a peer-to-peer distributed base station, where each base station is interconnected by X2 or other interfaces.
- the base station that generates the precoding matrix is defined as a centralized station.
- the node is processed, and the remaining base stations are transceiver nodes.
- the centralized processing node and the transceiver node both have a physical layer, a MAC layer, and the like.
- the difference is that the centralized processing node has a complete physical layer function, that is, can implement a baseband function including CoMP processing, including a second unit (LI part b) and The first unit (LI part a), and the physical layer function of the transceiver node includes only the first unit (LI part a), and the CoMP processing cannot be completed independently, refer to the centralized processing node and the transceiver node illustrated in the wireless communication system of FIG. 2B.
- the uplink non-CoMP user data is directly processed by the transceiver node and sent to the RNC (English is a Radio Network Controller, Chinese is a radio network controller) or AGW (in English) Access GateWay, Chinese is the access gateway) and other network nodes, and the uplink CoMP user data is processed by the centralized processing node and sent to the RNC or AGW. The data is sent to the RNC or AGW. the process of.
- the downlink non-CoMP user data in the downlink user data and the scheduling information 502 is transparently transmitted from the central processing node to the transceiver node, and the downlink CoMP user data and the precoding control information 501 include the downlink CoMP precoding matrix. And all relevant control information is sent by the central processing node to each transceiver node for precoding processing.
- the data of the downlink CoMP user needs to be sent to all the transmitting and receiving nodes and central processing nodes participating in the downlink CoMP through the inter-base station interface before precoding. If there are three base stations for downlink CoMP, such as the base stations 51 to 53 shown in FIG.
- the downlink CoMP data of the base station 51 is transmitted to the base stations 52 and 53; likewise, the downlink CoMP data of the base station 52 is transmitted to the base stations 51 and 53.
- the downlink CoMP data of the base station 53 is to be transmitted to the base stations 52 and 53.
- the frequency domain data 503 and the user channel before the uplink CoMP user is decoded.
- the status information 504 is collectively transmitted from the first unit of the base station serving as the transmitting and receiving node and the first unit inside the base station as the centralized processing node to the second unit of the centralized processing node as shown.
- the receiving module and the transmitting module on both sides are shown.
- the connection between the first unit and the second unit of the base station as a centralized processing node is the same as that of the prior art and is not described.
- the downlink precoding control information and the uplink CoMP user data are transmitted between the first unit and the second unit, and the transmission bandwidth is much smaller than the transmission of the precoded data between the first unit and the second unit.
- the required transmission bandwidth According to the architecture of the first unit and the second unit, the first unit and the second unit of the centralized processing node cooperate to implement the CoMP baseband processing function according to the architecture of the first unit and the second unit, thereby reducing inter-cell interference and improving the system. Spectrum efficiency, especially for edge users, gains system capacity gain; and baseband processing is implemented in two units, so that the wireless communication system using the above device can reduce the two baseband processing units with minimum transmission traffic. The transmission bandwidth between the two greatly reduces the need for transmission.
- the embodiment of the present invention is preferably applicable to a scenario where the transmission bandwidth between the baseband processing unit and the MAC and the upper layer processing unit is small, and CoMP is required to be implemented.
- the uplink and downlink CoMP is implemented between the units processed by the baseband with minimum transmission traffic, which reduces the deployment cost of the CoMP.
- the first unit and the second unit of the baseband processing apparatus 10 described above implement the method 30 and the embodiments 40 and 50 in the wireless communication system 20, and the details are not described herein.
- the embodiment of the present invention further provides three methods for processing baseband data. For details, refer to the embodiments of FIG. 4 and FIG. 5.
- another embodiment of the present invention provides a baseband data processing method, configured to process baseband data in a wireless communication system, where the method includes: generating, by using a second unit, a precoding matrix of a downlink CoMP user, according to precoding The matrix generates precoding control information; the precoding control information is sent to a first unit, and the first unit and the second unit are independently set; and the first unit uses the precoding control information to coordinate CoMP for downlink multipoint coordination in downlink user data.
- the user data performs downlink joint baseband processing to generate jointly transmitted baseband data for wireless transmission; the first unit transmits uplink CoMP user data in the uplink user data to the second unit, and uses the second unit to send uplink to the first unit.
- the CoMP user data completes the uplink joint baseband processing to generate user data for non-physical layer processing through the MAC layer and the above functional units.
- the method specifically includes: the second unit demodulates the uplink CoMP user data to obtain demodulated data; and the second unit decodes the demodulated data to Decoded data
- the functional units are sent to the MAC layer and above, and the functional units of the MAC layer and above are used to implement protocol functions of the non-physical layer.
- another embodiment of the present invention provides a baseband data processing method, configured to process baseband data in a wireless communication system, where the method includes: generating a precoding matrix of a downlink CoMP user, and generating precoding control according to the precoding matrix. Transmitting, to the first unit, precoding control information, so that the first unit performs downlink joint baseband processing on downlink multipoint coordinated transmission CoMP user data in the downlink user data according to the precoding control information to generate jointly transmitted baseband data for Receiving the uplink CoMP user data in the uplink user data sent by the first unit, performing uplink joint baseband processing on the uplink CoMP user data sent by the first unit to generate a non-physical layer for performing the functional unit through the MAC layer and above User data processed.
- the method for performing uplink uplink baseband processing on the uplink CoMP user data sent by the first unit specifically includes: demodulating the uplink CoMP user data to obtain demodulated data; The data is decoded to transmit the decoded data to the MAC layer and the above functional units, and the MAC layer and the above functional units are used to implement the protocol function of the non-physical layer.
- another embodiment of the present invention provides a baseband data processing method, configured to process baseband data in a wireless communication system, where the method includes: receiving precoding control information sent by a second unit, and controlling according to precoding The information performs downlink joint baseband processing on downlink multi-point coordinated transmission CoMP user data in the downlink user data to generate jointly transmitted baseband data for wireless transmission; and sends uplink CoMP user data in the uplink user data to the second unit, so that Uplink joint baseband processing is performed for uplink CoMP user data transmitted by the first unit to generate user data for non-physical layer processing by the MAC layer and the above functional units.
- the performing the downlink joint baseband processing on the downlink CoMP user data in the downlink user data according to the precoding control information to generate the jointly transmitted baseband data for wireless transmission where the method specifically includes:
- the receiving module is configured to receive precoding control information sent by the second unit, perform precoding processing to generate jointly transmitted baseband data, according to downlink CoMP user data and the precoding control information in the downlink user data. Send by wireless.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
- the technical solution of the present invention which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
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Abstract
本发明实施例提供了无线通信***的基带处理装置及***和方法。上述装置包括实现不同基带处理功能的第一单元和第二单元,第二单元用于生成下行CoMP用户的预编码矩阵,根据预编码矩阵生成预编码控制信息,向第一单元发送预编码控制信息;第一单元用于接收第二单元发送的预编码控制信息,并根据预编码控制信息针对下行用户数据中的下行CoMP用户数据进行下行联合基带处理以生成联合发送的基带数据用于无线发送;第一单元还用于将上行用户数据中的上行CoMP用户数据发送到第二单元;第二单元,还用于针对第一单元发送的上行CoMP用户数据完成上行联合基带处理。上述技术方案可以降低基带处理单元之间的传输带宽的同时获得***容量增益。
Description
无线通信***的基带处理装置和无线通信*** 技术领域
本发明涉及无线通信领域, 更具体地, 涉及无线通信***的基带处理装 置、 无线通信***和基带数据处理方法。 背景技术
多点协作传输 (英文为 Coordinated Multiplepoint Transmission 安定 Reception, 缩写为 CoMP )技术利用多个小区间的协作传输, 有效解决小区 边缘干扰问题,从而提高小区边缘和***吞吐量,扩大高速传输覆盖。 CoMP 传输包括下行 CoMP发射和上行 CoMP接收。 上行 CoMP接收通过多个小 区对用户数据的联合接收来提高小区边缘用户吞吐量;下行 CoMP发射根据 业务数据是否在多个协作点上都能获取可分为联合处理 (英文为 Joint Processing, 缩写为 JP ) 和协作调度 /波束赋形 (英文为 Coordinated Scheduling/Beam forming, 缩写为 CS/CB)。 联合处理可以获取传输增益, 而 协作调度 /波束赋形可以减小小区间干扰。
为了支持不同的 CoMP传输方式, 需要获知各种不同形式的用户信道 状态信息, 有三种获取类型: 显式反馈, 隐式反馈和基于探测参考信号(英 文为 Sounding Reference Symbol, 缩写为 SRS ) 的信道估计。 显式反馈是指 终端不对用户信道状态信息进行预处理, 反馈诸如信道系数等信息。 而隐式 反馈是指终端在一定假设的前提下对用户信道状态信息进行一定的预处理 后反馈给基站, 如预编码矩阵指示信息、 信道秩信息等。 在时分双工 (英文 为 Time Division Duplexing , 缩写为 TDD)***中还可以利用信道的互易性根 据终端发送的 SRS以获取等效的下行用户信道状态信息。
为了适应日益激烈的竟争和不断提升的吞吐量需求,无线基站的覆盖面 积正越来越小, 小基站部署灵活, 但由于各小基站独立工作, 无法获得联合 处理增益。 最近基于云计算技术的无线接入网络***正受到工业界的普遍关 注, 在这个架构中将多个基站的基带处理单元(英文为 Based Band Unit, 缩 写为 BBU ) 集中起来支持大规模联合处理来提升***容量, 同时利用资源 统计复用降低***成本。 大规模联合处理需要把各个射频拉远单元(英文为 Remote Radio Unit, 缩写为 RRU ) 的数据远距离回传到 BBU资源池, 目前
作为基带处理单元的 BBU 和 RRU 之间以公共通用无线接口 (英文为 Common Public Radio Interface, 缩写为 CPRI )等接口互联, CPRI口上的数 据传输率随天线数和***带宽呈线性增长, 如长期演进(英文为 Long Term Evolution, 缩写为 LTE ) ***带宽为 20MHz, 使用 8天线, 传输流量达到 lOGbps, 这么高的传输带宽需求对现有接入层的传输网络带来了很大的挑 战, 对光纤资源不丰富的运营商存在部署困难。 为降低 CPRI上的传输带宽 的要求, 出现了多种技术, 然而缺少这样一种技术, 既可以降低 CPRI上的 传输带宽又能同时获得***容量增益。 发明内容
本发明实施例提供一种无线通信***的基带处理装置和无线通信***, 能够降低基带处理单元之间的传输带宽的同时获得***容量增益。
第一方面, 提供了一种无线通信***的基带处理装置, 包括实现不同基 带处理功能的第一单元和第二单元, 其中第二单元, 用于生成下行多点协作 传输(CoMP )用户的预编码矩阵, 根据预编码矩阵生成预编码控制信息, 向第一单元发送预编码控制信息; 第一单元, 用于接收第二单元发送的预编 码控制信息, 以及获取上行用户数据和下行用户数据, 并根据预编码控制信 息针对下行用户数据中的下行 CoMP 用户数据进行下行联合基带处理以生 成联合发送的基带数据用于无线发送; 第一单元还用于将上行用户数据中的 上行 CoMP用户数据发送到第二单元; 第二单元, 还用于针对第一单元发送 的上行 CoMP 用户数据完成上行联合基带处理以生成非物理层处理的用户 数据。
结合第一方面, 在第一种可能的实现方式中, 所述第一单元具体包括接 收模块、 编解码模块和发送模块: 所述接收模块用于接收所述第二单元发送 的预编码控制信息; 所述第一单元的编解码模块用于根据下行用户数据中的 下行 CoMP 用户数据和所述接收模块所接收的所述第二单元发送的预编码 控制信息, 进行预编码处理以生成联合发送的基带数据用于无线发送; 所述 第一单元的发送模块用于将解调前的上行用户数据中的上行 CoMP 用户数 据发送到所述第二单元。
结合第一方面, 在第二种可能的实现方式中, 所述第二单元具体包括接 收模块、 解调模块、 译码模块、 预编码矩阵生成模块、 控制信息生成模块和
发送模块:所述第二单元的接收模块接收所述第一单元发送的上行 CoMP用 户数据;所述解调模块对所述接收模块所接收的上行 CoMP用户数据进行解 调并将解调后的数据发送到所述译码模块; 所述译码模块对所述解调模块发 送的解调后的数据进行译码, 以将译码后的数据发送到 MAC层及以上的功 能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协议功能; 所 述预编码矩阵生成模块根据用户信道状态信息生成 CoMP预编码矩阵并发 送到所述控制信息生成模块;所述控制信息生成模块根据所述 CoMP预编码 矩阵生成预编码控制信息, 发送到所述发送模块; 所述发送模块将所述预编 码控制信息发送到第一单元。
结合第一方面的第二种可能的实现方式, 在第三种可能的实现方式中, 所述第二单元的所述预编码矩阵生成模块所使用的用户信道状态信息包括 以下信息中的一个或多个: 终端反馈的信道系数、 终端反馈的预编码矩阵指 示信息、终端反馈的信道秩信息和根据终端发送的上行探测参考信号利用信 道互易性估计的下行信道系数。
结合第一方面, 在第四种可能的实现方式中, 所述第一单元还用于将从 网络侧获取的下行用户数据中的下行非 CoMP 用户数据进行下行基带处理 以生成无线发送的基带数据; 所述第一单元还用于对从空口接收的上行用户 数据中的上行非 CoMP 用户数据进行上行基带处理并将处理后获取的数据 发送到 MAC层及以上的功能单元, 所述 MAC层及以上的功能单元用于实 现非物理层的协议功能。
第二方面, 提供了一种无线通信***, 上述无线通信***包括集中处理 节点和收发节点, 其中集中处理节点包括上述基带处理装置的第二单元和媒 体接入控制 (MAC)层及以上的功能单元, 其中集中处理节点的 MAC层及以 上的功能单元用于实现非物理层的协议功能,且收发节点包括上述基带处理 装置的第一单元和射频单元, 其中射频单元用于接收第一单元所生成的联合 发送的基带数据以生成无线信号和收发无线信号,且收发节点的第一单元和 集中处理节点的第二单元实现不同的基带处理功能, MAC层及以上的功能 单元还用于从第二单元接收联合基带处理后的上行 CoMP用户数据、从第一 单元接收上行基带处理后的上行非 CoMP 用户数据和向第一单元发送下行 CoMP和下行非 CoMP用户数据; 或集中处理节点包括上述基带处理装置的 第一单元、 第二单元、 MAC层及以上的功能单元和射频单元, 其中集中处
理节点的 MAC层及以上的功能单元用于实现非物理层的协议功能、 还用于 从第二单元接收联合基带处理后的上行 CoMP用户数据、从集中处理节点的 第一单元接收上行基带处理后的上行非 CoMP 用户数据和向集中处理节点 的第一单元发送下行 CoMP和下行非 CoMP用户数据,射频单元用于实现生 成和收发无线信号且集中处理节点的第一单元和第二单元用于实现不同的 基带处理功能, 且收发节点包括上述基带处理装置的第一单元、 射频单元和 MAC层及以上的功能单元, 其中收发节点的 MAC层及以上的功能单元用 于实现非物理层的协议功能、还用于从第二单元接收联合基带处理后的上行 CoMP 用户数据、 从收发节点的第一单元接收上行基带处理后的上行非 CoMP用户数据和向收发节点的第一单元发送下行用户数据中非 CoMP用户 数据,射频单元用于实现生成和收发无线信号且收发节点的第一单元和集中 处理节点的第二单元实现不同的基带处理功能。
第三方面, 提供了一种基带数据处理方法, 用于处理无线通信***中的 基带数据, 方法包括: 获取上行用户数据和下行用户数据; 通过一第二单元 生成下行多点协作传输(CoMP )用户的预编码矩阵, 根据预编码矩阵生成 预编码控制信息; 将预编码控制信息发送给一第一单元, 第一单元与第二单 元独立设置; 利用第一单元根据预编码控制信息针对下行用户数据中的下行 CoMP用户数据进行下行联合基带处理以生成联合发送的基带数据用于无线 发送;利用第一单元将上行用户数据中的上行 CoMP用户数据发送到第二单 元,利用第二单元对第一单元发送的上行 CoMP用户数据完成上行联合基带 处理以生成非物理层处理的上行传输的用户数据。
结合第三方面, 在第一种可能实现的方式中, 利用第二单元对第一单元 发送的上行 CoMP用户数据完成联合基带处理, 具体包括: 第二单元对上行 CoMP用户数据进行解调, 得到解调后的数据; 第二单元对解调后的数据进 行译码, 以将译码后的数据发送到 MAC层及以上的功能单元, MAC层及 以上的功能单元用于实现非物理层的协议功能。
第四方面, 提供了一种基带数据处理方法, 用于处理无线通信***中的 基带数据, 方法包括: 生成下行多点协作传输(CoMP )用户的预编码矩阵, 根据预编码矩阵生成预编码控制信息, 向第一单元发送预编码控制信息; 以 使第一单元根据预编码控制信息针对下行用户数据中的下行 CoMP 用户数 据进行下行联合基带处理以生成联合发送的基带数据用于无线发送;接收第
一单元发送的上行用户数据中的上行 CoMP用户数据,针对第一单元发送的 上行 CoMP 用户数据完成上行联合基带处理以生成非物理层处理的上行传 输的用户数据。
结合第四方面, 在第一种可能实现的方式中, 针对第一单元发送的上行 CoMP用户数据完成上行联合基带处理, 具体包括: 对上行 CoMP用户数据 进行解调, 得到解调后的数据; 对解调后的数据进行译码, 以将译码后的数 据发送到 MAC层及以上的功能单元, MAC层及以上的功能单元用于实现 非物理层的协议功能。
第五方面, 提供了一种基带数据处理方法, 用于处理无线通信***中的 基带数据, 方法包括: 接收一第二单元发送的预编码控制信息, 并根据预编 码控制信息针对下行用户数据中的下行多点协作传输 CoMP 用户数据进行 下行联合基带处理以生成联合发送的基带数据用于无线发送; 将上行用户数 据中的上行 CoMP用户数据发送到第二单元,以使针对第一单元发送的上行 CoMP用户数据完成上行联合基带处理以生成用于通过媒体接入控制 (MAC) 层及以上的功能单元进行非物理层处理的用户数据。
结合第五方面, 在第一种可能实现的方式中, 根据预编码控制信息针对 下行用户数据中的下行多点协作传输 CoMP 用户数据进行下行联合基带处 理以生成联合发送的基带数据用于无线发送, 具体包括: 根据下行用户数据 中的下行 CoMP用户数据和预编码控制信息,进行预编码处理以生成联合发 送的基带数据用于无线发送。
本发明实施例可以提供一种无线通信***的基带处理装置、无线通信系 统和基带数据处理方法, 根据基带处理装置中第一单元和第二单元的架构, 通过基带处理装置中第一单元和第二单元协作实现 CoMP基带处理功能,而 第一单元和第二单元之间传输的是下行的预编码控制信息和上行 CoMP 用 户数据,这个传输带宽要远小于在第一单元和第二单元之间传输预编码后的 数据所需的传输带宽, 因此使得使用上述装置的无线通信***可以降低基带 处理装置单元之间的传输带宽的同时获得***容量增益。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例中 所需要使用的附图作筒单地介绍, 显而易见地, 下面所描述的附图仅仅是本
发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1A和图 1B是本发明实施例的无线通信***的基带处理装置的示意 框图。
图 2A和图 2B是本发明实施例的无线通信***的示意框图。
图 3是本发明实施例的无线通信***的基带处理方法的示意流程图。 图 4是本发明实施例的无线通信***的基带处理方法的示意图。
图 5是本发明另一实施例的无线通信***的基带处理方法的示意图。 图 6是本发明实施例的预编码矩阵和预编码控制信息的生成方法的示意 图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不 是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创 造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护的范围。
本发明的技术方案, 可以应用于各种多入多出 ( MIMO , Multiple Input Multiple Output )通信***,例如: 宽带码分多址( WCDMA, Wideband Code Division Multiple Access Wireless ) 的***, 如高速下行分组接入(HSDPA, High-Speed Downlink Packet Access ), 长期演进 ( LTE, Long Term Evolution ) ***,全球 波互联接入 ( WiMAX, Worldwide Interoperability for Microwave Access )***,无线带宽( WiFi, Wireless Fidelity )***(例如基于 IEE802.11n 标准)等。
用户设备 ( UE , User Equipment ) , 也可称之为移动终端 ( Mobile Terminal ),移动用户设备等, 可以经无线接入网(例如, RAN, Radio Access Network )与一个或多个核心网进行通信, 用户设备可以是移动终端, 如移 动电话(或称为"蜂窝"电话)和具有移动终端的计算机, 例如, 可以是便携 式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它们与无线接入 网交换语言和 /或数据。
基站, 可以是 WCDMA中的基站( NodeB ) , 还可以是 LTE中的演进型 基站( eNB或 e-NodeB , evolved Node B )或 WiMAX中的基站( Base Station ),
本发明并不限定, 但为描述方便, 下述实施例以 e-Node B为例进行说明。 另外, 本文中术语"***"和"网络"在本文中常被可互换使用。 本文中术 语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种关系, 例如, A和 /或 B, 可以表示: 单独存在 A , 同时存在 A和 B, 单独存在 B 这三种情况。 另外, 本文中字符" /", 一般表示前后关联对象是一种"或"的关 系。
本发明实施例提供了一种基带处理装置, 该装置中的基带处理单元可以 包括在无线通信***中的不同节点中,从而降低基带处理单元之间的传输带 宽, 且可以支持 CoMP。
图 1A是本发明实施例的无线通信***的基带处理装置 10的框图。如图
1所示, 基带处理装置 10包括分别实现不同基带处理功能的第一单元 11和 第二单元 15。
第二单元, 用于生成下行 CoMP用户的预编码矩阵, 根据所述预编码矩 阵生成所述预编码控制信息, 将所述预编码控制信息发送到所述第一单元。
第一单元, 用于接收所述第二单元发送的预编码控制信息, 以及获取上 行用户数据和下行用户数据, 并根据所述预编码控制信息针对下行用户数据 中的下行 CoMP 用户数据进行下行联合基带处理以生成联合发送的基带数 据用于无线发送;所述第一单元还用于将上行用户数据中的上行 CoMP用户 数据发送到所述第二单元。
在一个实施例中, 下行用户数据是第一单元从网络侧例如 RNC (无线 网络控制器 Radio Network Controller )获取。 在一个实施例中, ***的射频 单元会从空口接收上行用户数据, 第一单元再从射频单元获取上行用户数 据。 此外, 第二单元, 还用于针对所述第一单元发送的上行 CoMP用户数据 完成上行联合基带处理以生成非物理层处理的上行传输用户数据, 具体地, 以生成由媒体接入控制 (MAC)层及以上的功能单元进行非物理层处理的上 行传输的用户数据。
CoMP 用户数据指用于进行 CoMP 技术进行处理的数据, 包括上行 CoMP用户数据和下行 CoMP用户数据。上行 CoMP用户数据是指针对多个 小区所接收的用户数据的联合。下行 CoMP用户数据是指针对多个小区的用 于联合发送的用户数据。 通常当使用 CoMP用户数据时, 同时有调度信息或 控制信息指示该数据为 CoMP用户数据。
本发明实施例提供了一种基带处理装置 ,根据基带处理装置中第一单元 和第二单元的架构, 通过基带处理装置中第一单元和第二单元协作实现
CoMP基带处理功能, 从而减少小区间干扰, 提高***频谱效率, 特别是边 缘用户的吞吐量,获得***容量增益; 同时将基带处理分在两个单元中实现, 使得使用上述装置的无线通信***可以以最小的传输流量来降低两个基带 处理单元之间的传输带宽, 大大降低对传输的需求。 装置和技术方案以最小 的传输流量实现上下行 CoMP, 降低 CoMP的部署成本, 同时获得减少小区 间干扰, 提高***频谱效率, 特别是边缘用户的吞吐量的有益效果。
可选的, 所述第一单元还用于将从网络侧获取的下行用户数据中的下行 非 CoMP用户数据进行下行基带处理以生成无线发送的基带数据。
可选的, 所述第一单元还用于对从空口接收的上行用户数据中的上行非 CoMP用户数据进行上行基带处理并将处理后获取的数据发送到 MAC层及 以上的功能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协议 功能。
可选的, 如图 1B所示, 装置 10的第一单元 11具体包括接收模块 110、 编解码模块 111和发送模块 112。
所述接收模块 110用于接收下行用户数据中的下行 CoMP用户数据和所 述第二单元发送的预编码控制信息。
所述第一单元的编解码模块 111用于根据所述接收模块所接收的下行用 户数据中的下行 CoMP用户数据和所述第二单元发送的预编码控制信息,进 行预编码处理以生成联合发送的基带数据用于无线发送。
所述第一单元的发送模块 112将解调前的上行用户数据中的上行 CoMP 用户数据发送到所述第二单元。
可选的, 如图 1B所示, 装置 10的第二单元 15具体包括接收模块 150、 解调模块 151、译码模块 152、预编码矩阵生成模块 153、控制信息生成模块 154和发送模块 155。
所述第二单元的接收模块 150接收所述第一单元发送的上行 CoMP用户 数据。
所述解调模块 151对所述接收模块 150所接收的上行 CoMP用户数据进 行解调并将解调后的数据发送到所述译码模块。
所述译码模块 152对所述解调模块发送的解调后的数据进行译码并将译
码后的数据发送到 MAC层及以上的功能单元, 所述 MAC层及以上的功能 单元用于实现非物理层的协议功能。
所述预编码矩阵生成模块 153根据信道状态信息生成 CoMP预编码矩阵 并发送到所述控制信息生成模块。
所述控制信息生成模块 154根据所述 CoMP预编码矩阵生成预编码控制 信息, 发送到所述发送模块。 所述发送模块 155将所述预编码控制信息发送 到第一单元。
可选的, 所述第二单元的所述预编码矩阵生成模块 153所使用的用户信 道状态信息包括以下信息中的一个或多个: 终端反馈的信道系数、 终端反馈 的预编码矩阵指示信息、 终端反馈的信道秩信息、 根据终端发送的上行探测 参考信号利用信道互易性获得的下行信道系数。
针对不同应用场景, 本发明实施例的基带处理装置可以实现在不同架构 的无线通信***中。 图 2A和图 2B是本发明实施例的无线通信*** 20的示 意框图。
可选的, 如图 2A所示, 无线通信*** 20中包括集中处理节点 21和收 发节点 22。其中所述集中处理节点 21包括所述基带处理装置 10的第二单元 15和 MAC层及以上的功能单元 23,其中所述集中处理节点的 MAC层及以 上的功能单元用于实现非物理层的协议功能。 MAC层及以上的功能单元实 现了网络七层协议中数据链路层及数据链路层以上的协议, 物理实现时可以 对应一个或多个单元。 为方便说明, 且突出本发明实施例的技术方案, 以功 能划分时, 此处将 MAC层及以上的功能单元定义为一个功能单元, 但本发 明实施例对此并不做限定。 其中所述收发节点 22 包括所述基带处理装置的 第一单元 11和射频单元 24, 所述射频单元用于实现生成和收发无线信号且 所述收发节点的第一单元和所述集中处理节点的第二单元实现不同的基带 处理功能。
作为另一实施例, 可选的, 如图 2B所示, 无线通信*** 20中包括集中 处理节点 21和收发节点 22。其中所述集中处理节点 21包括所述基带处理装 置 10的第一单元 11、 第二单元 15、 MAC层及以上的功能单元 23和射频单 元 24,其中所述集中处理节点的 MAC层及以上的功能单元用于实现非物理 层的协议功能,所述射频单元用于实现生成和收发无线信号且所述集中处理 节点的第一单元和第二单元用于实现不同的基带处理功能。其中所述收发节
点 22包括所述基带处理装置的第一单元 11、射频单元 24和 MAC层及以上 的功能单元 23 ,其中所述收发节点的 MAC层及以上的功能单元用于实现非 物理层的协议功能, 所述射频单元用于实现生成和收发无线信号且所述收发 节点的第一单元和所述集中处理节点的第二单元实现不同的基带处理功能。
可选的, 所述第一单元 11和所述第二单元 15通过 IP网络、 以太网络、
PON (英文为 Passive Optical Network, 中文为无源光纤网络)或 WDM (英 文为 Wavelength Division Multiplexing , 中文为波分复用)等网络互联。
结合图 1B和图 2Α, 或图 1B和图 2Β , 在这种无线通信网络架构下, 本 发明实施例中下行 CoMP的实现过程包括以下内容。
1 ) 集中处理节点根据需要进行联合下行发送的用户信息, 指示收发节 点将用户信道状态信息上传至集中处理节点, 用户信道状态信息 (英文为
Channel State Information, 缩写为 CSI )可以是由终端显式反馈的信道系数 等信息, 或由终端隐式反馈的预编码矩阵指示信息、 信道秩等信息, 或在 TDD ***中基于上行探测参考信号利用信道互易性估计得到的下行信道系 数等。
2 )如图 6所示, 集中处理节点的预编码矩阵生成模块 153利用获取的 用户信道状态信息 61和无线资源管理模块 62输出的调度信息 63生成一个 下行 CoMP用户的预编码矩阵,也称为 CoMP预编码矩阵,上下文中筒称为 预编码矩阵, 如 7个收发节点, 每个收发节点有 4天线, 联合发送 6个数据 流, 生成 28x6的预编码矩阵; 其中调度信息例如包括: 下行 CoMP包括的 用户信息、 占用的时频资源、 使用的天线等, 可以由无线资源管理(RRM,
Radio Resources Management )模块输出。其中图 6是本发明实施例的预编码 矩阵和预编码控制信息的生成方法的示意图。
可选的, 预编码矩阵生成模块根据输入的用户信道状态信息不同, 执行 的操作也不同。 如果还未生成信道矩阵, 则首先由输入的用户信道状态信息 生成信道矩阵, 然后根据信道矩阵生成预编码矩阵。 出于筒洁, 附图中省略 此方式。
3 )如图 6所示, 集中处理节点的控制信息生成模块 154利用预编码矩 阵生成模块 153生成的预编码矩阵和调度信息 63 , 针对每个下行 CoMP收 发节点生成预编码控制信息 64, 经集中处理节点的发送模块和下行 CoMP 用户数据一起发送给各个收发节点,其中预编码控制信息可以包括预编码矩
阵向量和指示信息。预编码矩阵向量是从预编码矩阵中提取的对应于每个下 行 CoMP收发节点天线的向量。 指示信息是调度信息的一部分, 用于指示第 一单元的编解码模块对下行 CoMP用户数据进行预编码,生成预编码数据后 映射到对应的时频资源上。 如每个收发节点有 4天线的场景, 6个数据流, 则预编码矩阵向量的大小为 4x6, 指示信息包括下行 CoMP用户数据指示, 码字编号, DMRS (英文为 Demodulation Reference Signal, 中文为解调导频 ) 端口号等。
可选的, 作为另一种实现方式, 预编码控制信息可以包括整个预编码矩 阵和指示信息。将集中处理节点的预编码矩阵模块生成的整个预编码矩阵发 送到收发节点后,收发节点的编解码模块进行预编码,根据预编码控制信息, 提取出对应于每个收发端天线的编码后数据, 映射到对应的时频资源上。
作为可选的实施例,控制信息生成模块作为功能模块可以包括在第一单 元中, 或者可以包括在第二单元中。 此处, 出于筒洁, 仅以第二单元包括控 制信息生成模块为例进行附图说明。
4 )收发节点对下行 CoMP用户数据进行编码、 调制, 然后收发节点的 编解码模块根据接收的下行 CoMP 用户的预编码控制信息对相应的下行 CoMP用户数据进行预编码, 最后生成用于联合发送的基带数据。
此外, 在这种无线通信网络架构下, 本发明实施例中上行 CoMP的实现 过程包括以下内容。
集中处理节点指示收发节点分离并经收发节点的发送模块上传上行
CoMP用户数据,此处的上行 CoMP用户数据是指上行 CoMP用户的频域数 据, 集中处理节点的接收模块接收上行 CoMP用户的频域数据, 并且集中处 理节点的解调模块和译码模块对所接收的上行 CoMP 用户的频域数据进行 联合解调译码。
基带处理装置的第一单元将从网络侧获取的下行用户数据中的下行非
CoMP用户数据进行下行基带处理以生成无线发送的基带数据, 该下行基带 处理例如包括信道编码、 调制、 预编码、 资源映射、 FFT和*** CP等处理。 且对应地,第一单元对从空口接收的上行用户数据中的上行非 CoMP用户数 据进行上行基带处理并将处理后获取的数据发送到媒体接入控制 (MAC)层 及以上的功能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协 议功能, 该上行基带处理例如包括去 CP、 IFFT、 资源映射、 解调和译码等
处理。上述对非 CoMP用户数据的上行基带处理和下行基带处理的过程与现 有技术相同, 为突出本发明实施例对上、 下行 CoMP用户数据的联合处理, 针对非 CoMP 用户数据的上下行处理过程或对应的功能模块的具体细节在 此省略。 这样, 非 CoMP用户数据的基带处理工作都可以在第一单元进行, 同时第一单元还进行下行 CoMP用户数据的预编码, 不再经过第二单元, 直 接经射频单元发送, 从而可以减小第一单元和第二单元之间的数据流量。 从 上获知, 第一单元和第二单元之间传输的是下行的预编码控制信息和上行 CoMP用户数据, 这个传输带宽要远小于在第一单元和第二单元之间传输预 编码后的数据所需的传输带宽。
图 3是本发明实施例的无线通信***的基带处理方法 30的示意流程图。
S31 , 使用所述基带处理方法的装置包括实现不同基带处理功能的第一 单元和第二单元时, 所述第二单元生成下行多点协作 (CoMP )传输用户的 预编码矩阵, 根据所述预编码矩阵生成所述预编码控制信息, 将所述预编码 控制信息发送到所述第一单元。
S32, 所述第一单元接收所述第二单元发送的预编码控制信息, 以及获 取上行用户数据和下行用户数据, 并根据所述第二单元发送的预编码控制信 息针对下行用户数据中的下行 CoMP 用户数据进行下行联合基带处理以生 成联合发送的基带数据用于发送。
533, 所述第一单元将上行用户数据中的上行 CoMP用户数据发送到所 述第二单元。
534, 所述第二单元针对所述第一单元发送的上行 CoMP用户数据完成 上行联合基带处理以生成非物理层处理的上行传输用户数据, 具体地, 以生 成由媒体接入控制 (MAC)层及以上的功能单元进行非物理层处理的上行传 输的用户数据, 且生成下行 CoMP用户的预编码矩阵, 根据所述预编码矩阵 生成所述预编码控制信息, 将所述预编码控制信息发送到所述第一单元。
本发明实施例提供了一种基带处理方法,根据基带处理装置中第一单元 和第二单元的架构,通过使用该方法的装置中第一单元和第二单元协作实现 CoMP基带处理功能, 从而减少小区间干扰, 提高***频谱效率, 特别是边 缘用户的吞吐量,获得***容量增益; 同时将基带处理分在两个单元中实现, 使得使用上述装置的无线通信***可以以最小的传输流量来降低两个基带 处理单元之间的传输带宽, 大大降低对传输的需求。
可选的, 上述方法还包括: 所述第一单元将从网络侧获取的下行用户数 据中的下行非 CoMP 用户数据进行下行基带处理以生成无线发送的基带数 据;或所述第一单元对从空口接收的上行用户数据中的上行非 CoMP用户数 据进行上行基带处理并将处理后获取的数据发送到 MAC层及以上的功能单 元, 所述 MAC层及以上的功能单元用于实现非物理层的协议功能。
可选的, 所述第一单元具体包括接收模块、 编解码模块和发送模块时, 所述第一单元根据所述第二单元发送的预编码控制信息针对下行用户数据 中的下行 CoMP 用户数据进行下行联合基带处理以生成联合发送的基带数 据用于无线发送具体包括: 所述第一单元的接收模块接收下行用户数据中的 下行 CoMP用户数据和所述第二单元发送的预编码控制信息;所述第一单元 的编解码模块根据下行用户数据中的下行 CoMP 用户数据和所述接收模块 所接收的所述第二单元发送的预编码控制信息, 进行预编码处理以生成联合 发送的基带数据用于无线发送; 所述第一单元的发送模块将解调前的上行用 户数据中的上行 CoMP用户数据发送到所述第二单元。
可选的, 所述第二单元具体包括接收模块、 解调模块、 译码模块、 预编 码矩阵生成模块、 控制信息生成模块和发送模块时, 所述第二单元针对所述 第一单元发送的上行 CoMP 用户数据完成上行联合基带处理以生成用于通 过 MAC层及以上的功能单元进行非物理层处理的用户数据具体包括: 所述 第二单元的接收模块接收所述第一单元发送的上行 CoMP用户数据;所述解 调模块对所述接收模块所接收的上行 CoMP 用户数据进行解调并将解调后 的数据发送到所述译码模块; 所述译码模块对所述解调模块发送的解调后的 数据进行译码并将译码后的数据发送到 MAC 层及以上的功能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协议功能。
可选的, 所述第二单元生成下行 CoMP用户的预编码矩阵, 根据所述预 编码矩阵生成所述预编码控制信息,将所述预编码控制信息发送到所述第一 单元具体包括: 所述预编码矩阵生成模块根据用户信道状态信息生成 CoMP 预编码矩阵并发送到所述控制信息生成模块; 所述控制信息生成模块根据所 述 CoMP预编码矩阵生成预编码控制信息, 发送到所述发送模块; 所述发送 模块将所述预编码控制信息发送到第一单元。
可选的, 所述用户信道状态信息包括以下信息中的一个或多个: 终端反 馈的信道系数、 终端反馈的预编码矩阵指示信息、 终端反馈的信道秩信息和
根据终端发送的上行探测参考信号利用信道互易性估计的下行信道系数。 可选的, 所述第一单元和所述第二单元通过 IP 网络、 以太网络、 PON 或 WDM网络等互联。
可选的, 一种无线通信***包括集中处理节点和收发节点, 其中集中处 理节点包括上述基带处理装置的第二单元和 MAC层及以上的功能单元, 其 中集中处理节点的 MAC 层及以上的功能单元用于实现非物理层的协议功 能, 且收发节点包括上述基带处理装置的第一单元和射频单元, 其中射频单 元用于接收第一单元所生成的联合发送的基带数据以生成无线信号和收发 无线信号,且收发节点的第一单元和集中处理节点的第二单元实现不同的基 带处理功能, MAC层及以上的功能单元还用于从第二单元接收联合基带处 理后的上行 CoMP 用户数据、 从第一单元接收上行基带处理后的上行非 CoMP用户数据和向第一单元发送下行 CoMP和下行非 CoMP用户数据。
可选的, 一种无线通信***包括集中处理节点和收发节点, 其中集中处 理节点包括上述基带处理装置的第一单元、 第二单元、 MAC层及以上的功 能单元和射频单元, 其中集中处理节点的 MAC层及以上的功能单元用于实 现非物理层的协议功能、 还用于从第二单元接收联合基带处理后的上行 CoMP用户数据、 从集中处理节点的第一单元接收上行基带处理后的上行非 CoMP 用户数据和向集中处理节点的第一单元发送下行 CoMP 和下行非 CoMP用户数据, 射频单元用于实现生成和收发无线信号且集中处理节点的 第一单元和第二单元用于实现不同的基带处理功能,且收发节点包括上述基 带处理装置的第一单元、 射频单元和 MAC层及以上的功能单元, 其中收发 节点的 MAC层及以上的功能单元用于实现非物理层的协议功能、 还用于从 第二单元接收联合基带处理后的上行 CoMP用户数据、从收发节点的第一单 元接收上行基带处理后的上行非 CoMP 用户数据和向收发节点的第一单元 发送下行用户数据中非 CoMP用户数据,射频单元用于实现生成和收发无线 信号且收发节点的第一单元和集中处理节点的第二单元实现不同的基带处 理功能。
接下来, 为方便说明, 选择一种无线通信***进行本发明实施例的基带 处理方法的说明, 其中以 LTE***为例, 但本发明对此并不做限定。
图 4是本发明实施例 40的无线通信***的基带处理方法的示意图。 在 图 4的应用场景中, 无线通信***包括 1个集中处理节点和多个收发节点,
为清楚说明, 以图 2A中的无线通信***为例。 其中只有收发节点包括射频 单元, 只有集中处理节点包括 MAC层及以上功能单元。
集中处理节点的第二单元在上下文中也称为 LI part b功能模块。集中处 理节点的 MAC层及以上的功能单元在出于筒洁在本文中以一个附图标记 23 指示, 根据具体的实现方式, 如图 4 所示, 可以包括多个具体单元, 例如 MAC (英文为 Media Access Control, 中文为媒体接入控制 )单元、 RLC (英 文为 Radio Link Control,中文为无线链路控制)单元和 PDCP (英文为 Packet Data Convergence Protocol , 中文为分组数据汇聚协议 )单元等。
收发节点的第一单元在上下文中也称为 LI part a功能模块,第一单元包 括的编解码模块还包括现有技术中实现基带处理功能的一些具体的子模块。 例如图 4所示,收发节点的第一单元的编解码模块在 DL(英文为 Down Link, 中文为下行) 中实现了信道编码、 调制、 预编码、 资源映射、 FFT (英文为 Fast Fourier Transform, 中文为快速傅里叶变换)和*** CP (英文为 Cyclic Prefix Insertion )等。 收发节点的第一单元的编解码模块在 UL (英文为 Up Link, 中文为下行) 中实现了去 CP (英文为 Cyclic Prefix Remove ), IFFT (英文为 Fast Fourier Inverse Transform, 中文为快速傅里叶逆变换)、 资源逆 映射、 解调、 译码等。 对应地, 每个处理过程可以由具体的一个或多个子单 元实现, 本发明实施例在此不再赘述。
集中处理节点的第二单元和多个收发节点的第一单元的传输网络可以 是 IP网络、 以太网络、 PON或 WDM网络等。 接下来说明集中处理节点和 收发节点之间上下行的交互。
参考图 4, 下行方向包括: 控制信息生成模块 154生成的下行 CoMP用 户的预编码控制信息 41和下行用户数据及调度信息 42, 其中预编码控制信 息包括预编码矩阵向量和调度信息中对下行 COMP 的指示信息, 指示信息 包括下行 CoMP用户数据指示, 码字编号, DMRS端口号等。
上行方向包括: 上行非 CoMP用户译码后的数据流 43; 上行 CoMP用 户译码前的频域数据 44; 用户信道状态信息 45 , 其中具体可选的, 用户信 道状态信息 45可以包括在频域数据 44中或根据频域数据 44中的信息估计 获得。
上行中, 经第一单元的资源逆映射后, 获得频域数据, 收发节点的发送 模块将分离后的译码前的上行 CoMP用户的频域数据上传至集中处理节点。
同时,第一单元对非上行 CoMP用户继续基带解调、译码处理,发送到 MAC 层及以上的功能单元, 该过程与现有技术的处理方法相同。 第二单元的解调 模块和译码模块对接收的上行 CoMP 用户的频域数据进行联合基带的解调 和译码处理。
第一单元发送到第二单元的用户信道状态信息可以通过以下几种方法 获得。
如图 4的 44所示, 如果由终端反馈用户信道状态信息, 例如信道系数、 预编码矩阵指示信息和 /或信道秩信息, 则经第一单元解调译码获取后上传; 或者经第一单元的资源逆映射后, 收发节点将用户信道状态信息的频域数据 分离出来上传, 由第二单元解调获取; 或者在 TDD***中, 由用户发送上 行探测参考信号 (SRS ), 经资源逆映射后, 收发节点将 SRS的频域数据分 离出来上传,由第二单元进行信道估计以获取上行或下行信道系数。可选的, 或者在 TDD***中, 如由用户发送上行探测参考信号(SRS ), 经第一单元 的资源逆映射分离出 SRS的数据并可以由第一单元进行信道估计后,将估计 获得的信道系数上传至第二单元, 如图 4的 45所示。
由于 TDD***中, 上下行信道状态相同, 这一特性也称为信道互易性。 由此, 获得的上行信道状态信息也就是下行信道状态信息。
从上获知, 第一单元和第二单元之间传输的是下行的预编码控制信息和 上行 CoMP用户数据,这个传输带宽要远小于在第一单元和第二单元之间传 输预编码后的数据所需的传输带宽。本发明实施例根据第一单元和第二单元 的架构,通过使用收发节点的第一单元和集中处理节点的第二单元协作实现 CoMP基带处理功能, 从而减少小区间干扰, 提高***频谱效率, 特别是边 缘用户的吞吐量,获得***容量增益; 同时将基带处理分在两个单元中实现, 使得使用上述装置的无线通信***可以以最小的传输流量来降低两个基带 处理单元之间的传输带宽, 大大降低对传输的需求。
本发明实施例中的第一单元和第二单元之间的传输网络与基带处理单 元(例如 BBU )和远端射频单元(例如 RRU )之间的传输网络所要求的带 宽不同,这是由本发明实施例中用于基带处理的第一单元和第二单元的架构 决定的, 从而避免了针对 BBU和 RRU之间的网络传输带宽的过高要求。
本发明实施例优选地适用于集中处理,但又可以减小对接入网带宽需求 的场景中。 基带处理装置的单元之间以最小的传输流量实现上下行 CoMP,
降低 CoMP的部署成本。
可选的, 与实施例 40的应用场景不同, 无线通信***还可以包括图 5 的应用场景。 图 5是本发明另一实施例 50的无线通信***的基带处理方法 的示意图。 实施例 50的无线通信***的架构中包括多个基站, 例如基站 51 至 53。
实施例 50的应用场景主要包括以下两种场景, 一是宏基站和小基站的 基站融合场景, 其中小基站通过 X2或其它接口和宏基站直接相连, 小基站 用户数据通过宏基站透传,定义宏基站为集中处理节点,小基站为收发节点; 还有一种场景是对等分布式基站, 各基站之间以 X2或其它接口互联, 在这 种场景中, 定义生成预编码矩阵的基站为集中处理节点, 其余基站为收发节 点。 集中处理节点和收发节点都具有物理层、 MAC层及以上功能, 区别是 集中处理节点具有完整的物理层功能,也就是能够实现包括 CoMP处理的基 带功能, 包括第二单元(LI part b )和第一单元(LI part a ), 而收发节点物 理层功能仅包括第一单元(LI part a ), 不能独立完成 CoMP处理, 参考图 2B的无线通信***中示意的集中处理节点和收发节点。
区别于实施例 40的场景, 在实施例 50的场景中, 上行非 CoMP用户数 据由收发节点处理完后直接发送至 RNC (英文为 Radio Network Controller, 中文为无线网络控制器)或 AGW (英文为 Access GateWay, 中文为接入网 关)等网络节点, 而上行 CoMP 用户数据由集中处理节点处理完后发送至 RNC或 AGW, 出于筒洁,其中图 5中均未示出数据发送至 RNC或 AGW的 过程。 在基站融合场景中, 下行用户数据及调度信息 502中的下行非 CoMP 用户数据由集中处理节点透传至收发节点, 而对于下行 CoMP用户数据、预 编码控制信息 501 , 其中包括下行 CoMP预编码矩阵和所有相关控制信息由 集中处理节点发送至各收发节点进行预编码处理。 在对等分布式基站场景 中, 由于用户数据不经过同一个节点, 因此下行 CoMP用户的数据需要在预 编码前通过基站间接口发送到所有参与下行 CoMP 的收发节点和集中处理 节点。 如有 3个基站做下行 CoMP, 例如图 5所示的基站 51至 53 , 则基站 51的下行 CoMP数据要发送到基站 52和 53; 同样, 基站 52的下行 CoMP 数据要发送到基站 51和 53, 基站 53的下行 CoMP数据要发送到基站 52和 53。
与实施例 40类似, 上行 CoMP用户译码前的频域数据 503和用户信道
状态信息 504如图所示,从作为收发节点的基站的第一单元和作为集中处理 节点的基站内部的第一单元集中发送到集中处理节点的第二单元。 为了突出 收发节点的第一单元和集中处理节点的第二单元通过 IP 网络等传输网络连 接时的情形, 图中示出了两侧的接收模块和发送模块。 出于筒化, 作为集中 处理节点的基站的第一单元和第二单元之间的连接同现有技术, 未作说明。
从上获知, 第一单元和第二单元之间传输的是下行的预编码控制信息和 上行 CoMP用户数据,这个传输带宽要远小于在第一单元和第二单元之间传 输预编码后的数据所需的传输带宽。本发明实施例根据第一单元和第二单元 的架构,通过使用收发节点的第一单元以及集中处理节点的第一单元和第二 单元协作实现 CoMP基带处理功能, 从而减少小区间干扰, 提高***频谱效 率, 特别是边缘用户的吞吐量, 获得***容量增益; 同时将基带处理分在两 个单元中实现,使得使用上述装置的无线通信***可以以最小的传输流量来 降低两个基带处理单元之间的传输带宽, 大大降低对传输的需求。 本发明实 施例优选地适用于基带处理单元和 MAC及以上层处理单元之间的传输带宽 较小, 且要求实现 CoMP的场景中。 通过基带处理的单元之间以最小的传输 流量实现上下行 CoMP, 降低 CoMP的部署成本。
上述基带处理装置 10的第一单元和第二单元在无线通信*** 20中实现 了方法 30和实施例 40和 50, 出于筒洁, 具体细节此处不再赘述。
此外, 本发明实施例还提供了三种基带数据处理的方法, 具体细节可以 参考图 4和图 5的实施例。
可选的, 本发明另一实施例提供了一种基带数据处理方法, 用于处理无 线通信***中的基带数据, 方法包括: 通过一第二单元生成下行 CoMP用户 的预编码矩阵, 根据预编码矩阵生成预编码控制信息; 将预编码控制信息发 送给一第一单元, 第一单元与第二单元独立设置; 利用第一单元根据预编码 控制信息针对下行用户数据中的下行多点协作传输 CoMP 用户数据进行下 行联合基带处理以生成联合发送的基带数据用于无线发送; 利用第一单元将 上行用户数据中的上行 CoMP用户数据发送到第二单元,利用第二单元对第 一单元发送的上行 CoMP 用户数据完成上行联合基带处理以生成用于通过 MAC层及以上的功能单元进行非物理层处理的用户数据。 其中, 所述方法 具体包括: 所述第二单元对所述上行 CoMP用户数据进行解调, 得到解调后 的数据; 所述第二单元对所述解调后的数据进行译码, 以将译码后的数据发
送到 MAC层及以上的功能单元, 所述 MAC层及以上的功能单元用于实现 非物理层的协议功能。
可选的, 本发明又一实施例提供了一种基带数据处理方法, 用于处理无 线通信***中的基带数据, 方法包括: 生成下行 CoMP用户的预编码矩阵, 根据预编码矩阵生成预编码控制信息, 向第一单元发送预编码控制信息; 以 使第一单元根据预编码控制信息针对下行用户数据中的下行多点协作传输 CoMP用户数据进行下行联合基带处理以生成联合发送的基带数据用于无线 发送; 接收第一单元发送的上行用户数据中的上行 CoMP用户数据, 针对第 一单元发送的上行 CoMP 用户数据完成上行联合基带处理以生成用于通过 MAC层及以上的功能单元进行非物理层处理的用户数据。 其中, 针对所述 第一单元发送的上行 CoMP用户数据完成上行联合基带处理,所述方法具体 包括: 对所述上行 CoMP用户数据进行解调, 得到解调后的数据; 对所述解 调后的数据进行译码,以将译码后的数据发送到 MAC层及以上的功能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协议功能。
可选的, 本发明又一实施例提供了一种基带数据处理方法, 用于处理无 线通信***中的基带数据, 方法包括: 接收一第二单元发送的预编码控制信 息, 并根据预编码控制信息针对下行用户数据中的下行多点协作传输 CoMP 用户数据进行下行联合基带处理以生成联合发送的基带数据用于无线发送; 将上行用户数据中的上行 CoMP用户数据发送到第二单元,以使针对第一单 元发送的上行 CoMP用户数据完成上行联合基带处理以生成用于通过 MAC 层及以上的功能单元进行非物理层处理的用户数据。 其中, 所述根据所述预 编码控制信息针对下行用户数据中的下行 CoMP 用户数据进行下行联合基 带处理以生成联合发送的基带数据用于无线发送, 所述方法具体包括: 所述 第一单元的接收模块用于接收所述第二单元发送的预编码控制信息; 根据所 述下行用户数据中的下行 CoMP用户数据和所述预编码控制信息,进行预编 码处理以生成联合发送的基带数据用于无线发送。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描 述的***、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的***、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 ***, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一 个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前 述的存储介质包括: U盘、移动硬盘、只读存储器( ROM , Read-Only Memory )、 随机存取存储器(RAM, Random Access Memory ), 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 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揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。
Claims
1、 一种无线通信***的基带处理装置, 其特征在于, 包括实现不同基 带处理功能的第一单元和第二单元, 所述第二单元, 用于生成下行多点协作 传输 CoMP用户的预编码矩阵, 根据所述预编码矩阵生成预编码控制信息, 向第一单元发送预编码控制信息;
所述第一单元, 用于接收所述第二单元发送的预编码控制信息, 以及获 取上行用户数据和下行用户数据, 并根据所述预编码控制信息针对所述下行 用户数据中的下行 CoMP 用户数据进行下行联合基带处理以生成联合发送 的基带数据用于无线发送; 所述第一单元还用于将所述上行用户数据中的上 行 CoMP用户数据发送到所述第二单元;
所述第二单元,还用于针对所述第一单元发送的上行 CoMP用户数据完 成上行联合基带处理以生成非物理层处理的上行传输的用户数据, 具体地, 以生成由媒体接入控制 (MAC)层及以上的功能单元进行非物理层处理的上 行传输的用户数据, 且生成下行 CoMP用户的预编码矩阵, 根据所述预编码 矩阵生成所述预编码控制信息, 将所述预编码控制信息发送到所述第一单 元。
2、 根据权利要求 1所述的基带处理装置, 其特征在于, 所述第一单元 具体包括接收模块、 编解码模块和发送模块:
所述接收模块用于接收所述第二单元发送的预编码控制信息
所述第一单元的编解码模块用于获取下行用户数据并根据下行用户数 据中的下行 CoMP 用户数据和所述接收模块所接收的所述第二单元发送的 预编码控制信息, 进行预编码处理以生成联合发送的基带数据用于无线发 送; 所述编解码模块还用于获取上行用户数据;
所述第一单元的发送模块用于将解调前的上行用户数据中的上行 CoMP 用户数据发送到所述第二单元。
3、 根据权利要求 1所述的基带处理装置, 其特征在于, 所述第二单元 具体包括接收模块、 解调模块、 译码模块、 预编码矩阵生成模块、 控制信息 生成模块和发送模块:
所述第二单元的接收模块接收所述第一单元发送的上行 CoMP 用户数 据;
所述解调模块对所述接收模块所接收的上行 CoMP 用户数据进行解调
并将解调后的数据发送到所述译码模块;
所述译码模块对所述解调模块发送的解调后的数据进行译码, 以将译码 后的数据发送到 MAC层及以上的功能单元, 所述 MAC层及以上的功能单 元用于实现非物理层的协议功能;
所述预编码矩阵生成模块根据用户信道状态信息生成 CoMP预编码矩 阵并发送到所述控制信息生成模块;
所述控制信息生成模块根据所述 CoMP预编码矩阵生成预编码控制信 息, 发送到所述发送模块;
所述发送模块将所述预编码控制信息发送到第一单元。
4、 根据权利要求 3所述的基带处理装置, 其特征在于, 所述第二单元 的所述预编码矩阵生成模块所使用的用户信道状态信息包括以下信息中的 一个或多个:
终端反馈的信道系数、 终端反馈的预编码矩阵指示信息、 终端反馈的信 道秩信息和根据终端发送的上行探测参考信号利用信道互易性估计的下行 信道系数。
5、 根据权利要求 1所述的基带处理装置, 其特征在于:
所述第一单元还用于将从网络侧获取的下行用户数据中的下行非 CoMP 用户数据进行下行基带处理以生成无线发送的基带数据;
所述第一单元还用于对从空口接收的上行用户数据中的上行非 CoMP 用户数据进行上行基带处理并将处理后获取的数据发送到 MAC层及以上的 功能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协议功能。
6、 根据权利要求 1至 5任一所述的基带处理装置, 其特征在于: 所述第一单元和所述第二单元通过国际互联网 IP 网络、 以太网络、 无 源光纤网络 PON或波分复用 WDM网络互联。
7、 一种无线通信***, 其特征在于, 包括集中处理节点和收发节点: 所述集中处理节点包括如权利要求 1至 6任一所述基带处理装置的第二 单元和媒体接入控制 MAC层及以上的功能单元, 其中所述集中处理节点的 MAC层及以上的功能单元用于实现非物理层的协议功能, 且所述收发节点 包括如权利要求 1至 6任一所述基带处理装置的第一单元和射频单元, 其中 所述射频单元用于接收所述第一单元所生成的联合发送的基带数据以生成 无线信号和收发无线信号,且所述收发节点的第一单元和所述集中处理节点
的第二单元实现不同的基带处理功能, 所述 MAC层及以上的功能单元还用 于从所述第二单元接收联合基带处理后的上行 CoMP用户数据、从所述第一 单元接收上行基带处理后的上行非 CoMP 用户数据和向所述第一单元发送 下行 CoMP和下行非 CoMP用户数据; 或
所述集中处理节点包括如权利要求 1至 6任一所述基带处理装置的第一 单元、 第二单元、 MAC 层及以上的功能单元和射频单元, 其中所述集中处 理节点的 MAC层及以上的功能单元用于实现非物理层的协议功能、 还用于 从所述第二单元接收联合基带处理后的上行 CoMP用户数据、从所述集中处 理节点的第一单元接收上行基带处理后的上行非 CoMP 用户数据和向所述 集中处理节点的第一单元发送下行 CoMP和下行非 CoMP用户数据,所述射 频单元用于实现生成和收发无线信号且所述集中处理节点的第一单元和第 二单元用于实现不同的基带处理功能,且所述收发节点包括如权利要求 1至 6任一所述基带处理装置的第一单元、 射频单元和 MAC层及以上的功能单 元, 其中所述收发节点的 MAC层及以上的功能单元用于实现非物理层的协 议功能、 还用于从所述第二单元接收联合基带处理后的上行 CoMP 用户数 据、从所述收发节点的第一单元接收上行基带处理后的上行非 CoMP用户数 据和向所述收发节点的第一单元发送下行用户数据中非 CoMP用户数据,所 述射频单元用于实现生成和收发无线信号且所述收发节点的第一单元和所 述集中处理节点的第二单元实现不同的基带处理功能。
8、 一种基带数据处理方法, 用于处理无线通信***中的基带数据, 其 特征在于, 所述方法包括:
获取上行用户数据和下行用户数据;
通过一第二单元生成下行多点协作传输 CoMP用户的预编码矩阵,根据 所述预编码矩阵生成预编码控制信息; 将所述预编码控制信息发送给一第一 单元, 所述第一单元与第二单元独立设置; 利用所述第一单元根据所述预编 码控制信息针对所述下行用户数据中的下行 CoMP 用户数据进行下行联合 基带处理以生成联合发送的基带数据用于无线发送;
利用所述第一单元将所述上行用户数据中的上行 CoMP 用户数据发送 到所述第二单元,利用所述第二单元对所述第一单元发送的上行 CoMP用户 数据完成上行联合基带处理以生成非物理层处理的上行传输的用户数据。
9、 根据权利要求 8所述的方法, 其特征在于, 所述利用所述第二单元
对所述第一单元发送的上行 CoMP用户数据完成联合基带处理, 具体包括: 所述第二单元对所述上行 CoMP 用户数据进行解调, 得到解调后的数 据;
所述第二单元对所述解调后的数据进行译码, 以将译码后的数据发送到 MAC层及以上的功能单元, 所述 MAC层及以上的功能单元用于实现非物 理层的协议功能。
10、 一种基带数据处理方法, 用于处理无线通信***中的基带数据, 其 特征在于, 所述方法包括:
生成下行多点协作传输 CoMP用户的预编码矩阵,根据所述预编码矩阵 生成预编码控制信息, 向第一单元发送预编码控制信息; 以使所述第一单元 根据所述预编码控制信息针对下行用户数据中的下行 CoMP 用户数据进行 下行联合基带处理以生成联合发送的基带数据用于无线发送;
接收所述第一单元发送的上行用户数据中的上行 CoMP用户数据,针对 所述第一单元发送的上行 CoMP 用户数据完成上行联合基带处理以生成非 物理层处理的上行传输的用户数据。
11、 根据权利要求 10所述的方法, 其特征在于, 所述针对所述第一单 元发送的上行 CoMP用户数据完成上行联合基带处理, 具体包括:
对所述上行 CoMP用户数据进行解调, 得到解调后的数据;
对所述解调后的数据进行译码, 以将译码后的数据发送到 MAC层及以 上的功能单元, 所述 MAC层及以上的功能单元用于实现非物理层的协议功 能。
12、 一种基带数据处理方法, 用于处理无线通信***中的基带数据, 其 特征在于, 所述方法包括:
接收一第二单元发送的预编码控制信息, 并根据所述预编码控制信息针 对下行用户数据中的下行多点协作传输 CoMP 用户数据进行下行联合基带 处理以生成联合发送的基带数据用于无线发送;
将上行用户数据中的上行 CoMP用户数据发送到所述第二单元,以使所 述针对所述第一单元发送的上行 CoMP 用户数据完成上行联合基带处理以 生成非物理层处理的上行传输的用户数据。
13、 根据权利要求 12所述的方法, 其特征在于, 所述根据所述预编码 控制信息针对下行用户数据中的下行多点协作传输 CoMP 用户数据进行下
行联合基带处理以生成联合发送的基带数据用于无线发送, 具体包括: 根据所述下行用户数据中的下行 CoMP 用户数据和所述预编码控制信 息, 进行预编码处理以生成联合发送的基带数据用于无线发送。
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