WO2013016990A1 - Procédé et système pour un multiplexage par répartition dans le temps d'un canal d'émission - Google Patents

Procédé et système pour un multiplexage par répartition dans le temps d'un canal d'émission Download PDF

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Publication number
WO2013016990A1
WO2013016990A1 PCT/CN2012/077614 CN2012077614W WO2013016990A1 WO 2013016990 A1 WO2013016990 A1 WO 2013016990A1 CN 2012077614 W CN2012077614 W CN 2012077614W WO 2013016990 A1 WO2013016990 A1 WO 2013016990A1
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WIPO (PCT)
Prior art keywords
group
frequency band
terminal
time interval
channels
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PCT/CN2012/077614
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English (en)
Chinese (zh)
Inventor
刁心玺
胡剑
赵孝武
许玲
李冬梅
马志锋
蓝善福
张峻峰
江波涛
曹一卿
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中兴通讯股份有限公司
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Publication of WO2013016990A1 publication Critical patent/WO2013016990A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12—Frequency diversity

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and system for time division multiplexing transmission channels.
  • MIMO Multiple-Input Multiple-Output
  • beamforming technology in wireless communication systems, wireless access systems have become multi-antenna systems.
  • spectrum aggregation technology wireless communication systems have evolved from multi-antenna systems to multi-antenna multi-band (multi-carrier) systems.
  • the transmitting channel is the most costly functional module in the wireless communication system. If the number of configurations of the multi-antenna multi-band system transmission channel can be reduced by time-division multiplexing transmission channels without reducing system performance, the wireless communication system can be significantly reduced. the cost of.
  • the basis for reducing the number of transmission channels required for a multi-antenna multi-carrier wireless communication system by time-division multiplexing transmission channels is the following redundancy in a multi-antenna multi-channel system:
  • the first type of transmission channel redundancy - the same frequency point multi-carrier multi-antenna same cell refers to the geographical area covered by multiple co-frequency carriers
  • the transmission channel redundancy existing in the system in the same geographical cell, due to the terminal
  • Different geographical locations result in different space-time channel characteristics of the terminal. Therefore, the number of antennas that different terminals can use in MIMO mode is different.
  • the number of streams of multi-antenna multi-stream transmission or the order of MIMO channels that the space-time channel can support is random, but statistically, it can be used in one cell in one radio frame.
  • the ratio of the terminal of the maximum antenna configuration of a cell to the serving terminal in the cell is statistically proportional.
  • a terminal that serves a terminal that does not require high-order MIMO transmission, or a terminal that transmits to its full-time channel without transmitting to its full-time channel Within the time slot in which the service is provided, some of the transmit channels allocated to the cell are in a redundant state. Naturally, there are also redundancy in transmission resources and baseband processing resources corresponding to these transmission channels.
  • the second type of transmission channel redundancy - one multi-frequency point multi-carrier and the same coverage (refer to the same coverage of multiple carriers) Geographical regions, there are two or more carriers at each frequency.)
  • Transmission channel redundancy in multiple antenna systems As mentioned earlier, there is transmission channel redundancy in the cells covered by each carrier. That is, there are some time slots on which no part of the transmission channels can be used or used.
  • there is a first type of redundancy for each carrier and redundancy on these carriers introduces a new problem: Since each carrier has redundancy, it is necessary to have all carriers Configure according to the same number of antennas. This type of redundancy is referred to herein as inter-carrier transmit channel redundancy.
  • the third type of transmission channel redundancy - the redundancy between multiple sectors on one site: the multi-carrier multi-antenna system in each sector has transmission channel redundancy, and there are more between sectors redundancy. Even if each sector has a deduplication configuration, there will still be redundancy between the sectors, because the difference in the number of terminals or the number of services in different cells will result in statistics on the configuration of the transmission channels between the sectors. redundancy.
  • the fourth type of transmission channel redundancy - transmission channel redundancy in time division duplex (TDD) and frequency division duplex (FDD) composite systems In the uplink time slot of the TDD system, the transmission channel configured for the TDD system is redundant. I/Idle state.
  • Category 5 Transmit Channel Redundancy There is transmit channel redundancy in TDD systems that configure uplink and downlink time slots asynchronously on the discontinuous TDD band: There is transmit channel redundancy on each TDD band.
  • MSR Multi-standard-radio
  • SDR software-defined radio
  • the multi-antenna and multi-carrier radio remote unit are product forms stipulated by the 3GPP technical specifications, and all of the first to third types of redundancy are present. I. If further considering a new RRU physical entity: TDD/FDD MSR, then in the TDD/FDD-MSR, the above five transmission channel redundancy may exist. From the operator's demand for TDD/FDD hybrid networking, TDD/FDD-MSR integrated MSR for TDD RF channel and FDD RF channel will have a gradual market, but TDD/FDD MSR involves TDD and FDD RF channels.
  • the coexistence problem which is usually considered at this stage, is a type of device that has complex interference and is not practically meaningful.
  • the interference problem can be avoided, and because of its unique convenience in utilizing the transmission channel during the TDD uplink time slot, it is a device form that can reduce the overall cost. .
  • a front end circuit for mobile radio designed to operate on a first TDD mobile radio In the system and the first FDD mobile radio system, both the TDD mobile radio system and the FDD mobile radio system use the same frequency band; having a first FDD transmission path for the first FDD mobile radio system, the first The FDD transmission path includes a transmit amplifier (PA F ) and a transmit filter element (TF T ) of the duplexer (DU ); having a first TDD transmit path for the first TDD mobile radio system, the first TDD transmit path Having a transmit amplifier (PA T ); having an antenna connection ( AN ) connectable to a duplexer (DU ) or a first TDD transmit path; having at least one transmit filter ( TXF ); having a switch A device (SM), the switching device (SM) being operative to connect the at least one transmit filter (TXF) to a first FDD transmit path or a first TDD
  • TDD time division duplex GSM
  • PAT Transmission Amplifier
  • a radio frequency (RF) receiver In a radio frequency (RF) receiver, the receiver RF chain is tuned to A first (eg, Global Positioning System (GPS)) channel permits admission of a first (eg, GPS) signal on a first (eg, GPS) channel on a receiver RF chain during a first duration.
  • the receiver RF chain is tuned to a second (e.g., cellular paging) channel to permit a second (e.g., cellular paging) channel on the receiver RF chain during a second duration after the first duration
  • the reception of a second (eg, cellular paging) signal In a radio frequency (RF) receiver, the receiver RF chain is tuned to A first (eg, Global Positioning System (GPS)) channel permits admission of a first (eg, GPS) signal on a first (eg, GPS) channel on a receiver RF chain during a first duration.
  • the receiver RF chain is tuned to a second (e.g., cellular paging) channel
  • a first (eg, GPS) signal during the second duration treats the actual interruption as a temporary short-term fading of the first (eg, GPS) signal during the second duration, or provides a bridge signal during the second duration (eg, an estimate on the receiver RF chain) GPS signal or actual GPS signal received on another receiver RF chain).
  • the process treats the actual interruption as a temporary short-term fading of the first (eg, GPS) signal during the second duration, or provides a bridge signal during the second duration (eg, an estimate on the receiver RF chain) GPS signal or actual GPS signal received on another receiver RF chain).
  • the related art 1 and the related art 2 do not give a method of sharing a radio frequency transmission channel in a frequency band used in a time division duplex (TDD) mode and a frequency band used in a frequency division duplex (FDD) mode. Summary of the invention
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art which does not provide a method for reducing the number of transmission channels by utilizing the redundancy of the transmission channels existing in the multi-antenna system.
  • the present invention first provides a method of time division multiplexing transmission channels, wherein
  • the first transmission bandwidth is less than or equal to the width of the first frequency band in the first time interval, and the second frequency band is a frequency band outside the first frequency band.
  • a system for multiplexing transmit channels wherein:
  • the system is configured in a first manner, time division multiplexing transmission channels between different frequency bands on the same group of antenna elements, the system comprising:
  • a first set of antenna elements including at least one antenna unit, a first set of transmit channels including at least one frequency point and/or a transmit channel of adjustable transmit bandwidth, a terminal scheduling unit and a transmit channel scheduling unit, wherein:
  • the terminal scheduling unit is configured to: allocate, in the second frequency band and/or the first frequency band, a downlink channel resource for a terminal that needs to use the first group of transmission channels, and need to be from the first group of antennas in the first frequency band
  • the downlink channel of the terminal receiving the signal transmitted by the first group of transmission channels is configured in a first time interval, and/or is required to receive from the first group of antenna elements on the second frequency band by the first group of transmission channels
  • the downlink channel of the terminal of the signal is configured in the second time interval;
  • the transmitting channel scheduling unit is configured to: configure a first group of transmitting channels in a time division multiplexing manner between the first frequency band and the second frequency band, where the first group of transmitting channels are configured in the first time interval a state on a frequency band in which the first group of transmission channels are in a state of being disposed on the second frequency band;
  • the first group of transmission channels is configured to: adjust a center frequency of the transmission channel and/or a transmission bandwidth of the transmission channel according to the control of the transmission channel scheduling unit, to form a second parameter configuration state, and configure the second parameter state Transmitting, by the first group of antenna units, a signal transmitted by the terminal on the second frequency band to the downlink channel on the second time interval;
  • the system is configured in a second manner, time division multiplexing transmission channels between different antenna units, the system comprising:
  • a first group of antenna units including at least one antenna unit, a third group of antenna units including at least one antenna unit, a first group of transmission channels including at least one frequency point and/or a transmission channel with adjustable transmission bandwidth, and a terminal scheduling unit And a transmit channel scheduling unit, wherein:
  • the terminal scheduling unit is configured to: assign, on a first frequency band and/or a second frequency band, a downlink channel of a terminal that needs to use the third group of antenna units in a second time interval, and/or in a first frequency band Upgoing the downlink channel assignment of the terminal that needs to use the first group of antenna units in the terminal served by the first frequency band in the first time interval;
  • the transmitting channel scheduling unit is configured to: configure a first group of transmitting channels in a time division multiplexing manner between the first group of antenna units and the third group of antenna units, and the first group of transmitting channels are configured in the first time interval a state on the first group of antenna elements, wherein the first group of transmission channels are in a state of being disposed on the third group of antenna elements in the second time interval;
  • the first group of transmitting channels are configured to: adjust a center frequency of the transmitting channel and/or a transmitting bandwidth of the transmitting channel according to the control of the transmitting channel scheduling unit, form a third parameter configuration state, and configure the state in a third parameter state Using the third group of antenna elements on the first frequency band to configure a signal transmitted by the terminal on the downlink channel to the downlink time interval; or forming a fourth parameter configuration state, and The fourth parameter configuration state transmits a signal to the terminal configured on the second channel in the second time interval by using the third group of antenna elements on the second frequency band.
  • Embodiments of the present invention overcome the redundancy of a transmission channel generated by a statistical rule existing in a space-time channel characteristic between terminals existing in a multi-antenna and/or multi-band system over a specific time interval, and a transmission channel.
  • the transmission channels existing in the multi-antenna system are redundantly configured, and the number of transmission channels in the multi-antenna system is reduced; in particular, between the frequency band used in the TDD mode and the frequency band used in the FDD mode, and in two Between the TDD bands used for pairing, the number of transmit channels required for a multi-antenna system is reduced by time-multiplexed transmit channels.
  • the transmission channel overcomes the deficiencies of the prior art method of reducing the number of transmission channels by utilizing the redundancy of the transmission channels existing in the multi-antenna system, and realizes the following method for reducing the number of transmission channels in the multi-antenna system:
  • Time division multiplexing transmission channels in the TDD and FDD bands are Time division multiplexing transmission channels in the TDD and FDD bands
  • Time division multiplexing transmission channels on two TDD bands are Time division multiplexing transmission channels on two TDD bands
  • the transmit channels are time division multiplexed between different frequency bands and/or between different antenna elements in a multi-carrier and/or multi-band system covering different geographical areas of the co-site.
  • FIG. 1 is a schematic flowchart diagram of a method for multiplexing a transmission channel according to an embodiment of the present invention.
  • Figure 3 (a) and Figure 3 (b) show an example of a method for time-division multiplexed transmission channels between the TDD band and the FDD band.
  • Figure 4 (a) and Figure 4 (b) show an example of a method of configuring a transmit channel in a time division manner on two non-adjacent TDD bands.
  • Figure 5 (a) and Figure 5 (b) show a system in which a transmission channel is configured in a time division manner between frequency bands.
  • 6 is a schematic diagram of a time division multiplexed transmission channel between antenna units of different serving cells in a common site.
  • FIG. 8 is a schematic diagram of a system composition of a time division multiplexed transmission channel.
  • the related art does not utilize differences in channel real-time characteristics, transmission link patterns, and service types between terminals receiving data on the same frequency band, giving time division multiplexing/statistical multiplexing between different frequency bands or between different antenna elements.
  • the technical solution of the launch channel In particular, there is no given method of utilizing the difference in the number of maximum radio frequency channels that can be used in a spatially multiplexed manner in terminals in different geospatial locations in a multi-antenna system.
  • the related art does not provide a method of how to utilize the following resources in the above problem:
  • a part of the TDD transmission channel or the FDD transmission channel is determined by the rank of the radio channel impulse response matrix between the terminal and the base station or determined by the service request of the terminal.
  • the transmission channels of TDD can be multiplexed in other frequency bands, which can achieve flexible configuration between different technical specifications.
  • the related art also does not disclose and utilize the following mechanism that can reduce the number of transmitting channels: the difference in real-time characteristics of wireless channels between terminals in different geographical locations in a small area, especially the channel matrix between receiving channels of terminals Statistical differences in rank.
  • An embodiment of the present invention provides a method for time division multiplexing transmission channels, which implements time division multiplexing on one or more transmission channels in one of the following manners: (1) Time-division multiplexed transmit channels between a frequency band used in a time division duplex (TDD) mode and a downlink frequency band used in a frequency division duplex (FDD) mode;
  • TDD time division duplex
  • FDD frequency division duplex
  • Time-division multiplexed transmit channels between the frequency band used in the TDD mode and the frequency band used in the one-way downlink mode (including the broadcast frequency band);
  • time-division multiplexing transmission channels between the first group of antenna elements and the third group of antenna elements wherein the first group of antenna elements and the third group of antenna elements are antenna units covering different geographical areas on the same site, or The first group of antenna elements and the third group of antenna elements are antenna elements within the same antenna combination.
  • the present invention utilizes the following transmit channel redundancy that exists in existing multi-antenna and/or multi-band systems:
  • the first type of transmission channel redundancy the same frequency point multi-carrier multi-antenna same cell (referring to the geographical area covered by multiple co-frequency carriers) the transmission channel redundancy existing in the system;
  • the second type of transmission channel redundancy - one multi-frequency point multi-carrier and the same coverage refers to the same geographical area covered by multiple carriers, there are two or more carriers on each frequency point) the transmission existing in the multi-antenna system Channel redundancy;
  • the transmission channel redundancy exists in the TDD system in which the uplink and downlink time slots are asynchronously arranged on the discontinuous TDD frequency band. : There is transmit channel redundancy on each TDD band.
  • the configuration of the transmitting antenna unit and the receiving antenna unit unit covering the same cell is as follows:
  • the same cell shares the transmitting antenna unit and the receiving antenna unit, and the manner of sharing the antenna unit is a common method of the existing cellular mobile communication system.
  • the receiving channel and the transmitting channel share the antenna unit on the network side; in the TD-SCDMA system, the receiving channel and the transmitting channel on the network side also time-multiplex the antenna unit.
  • the same cell transmits signals to the terminal and receives signals from the terminal to use different antenna units.
  • This method is not applied in the existing cellular mobile communication system.
  • the following advantages can be obtained by using this method:
  • Two separately installed antennas can increase the isolation of the network side transmission channel from the network side receiving channel;
  • the FDD system configures a set of antennas to cover a geographical area by means of transmitting and receiving shared antennas
  • the TDD system also configures a set of antennas to cover the geographical area by means of transmitting and receiving shared antennas.
  • a total of two antenna units are used, each of which is used in a shared manner.
  • the transmitting channel of the FDD system and the transmitting channel of the TDD system use the same set of antennas as the transmitting antenna of the covered geographical area, and the receiving channel of the FDD system and the receiving channel of the TDD system are used.
  • the same set of antennas receive signals from the geographical area covered. In this way, it is convenient to configure the power of the transmitting channel in the TDD frequency band and the FDD frequency band, and reduce the out-of-band leakage power of the frequency band of the FDD transmitting channel to the TDD receiving frequency band, and the number of antennas is still two sets, and the TDD system and The same is true for the separate deployment of FDD systems.
  • the transmit antenna uses a transmit filter and the receive antenna uses a receive filter.
  • the transmit filter and the receive filter are different physical devices.
  • the FDD band shares a transmit filter with the TDD band, compared to the TDD system and FDD.
  • a filter is reduced when the system is deployed in a discrete manner.
  • Embodiments of the present invention provide a method of time division multiplexed transmit channels for time division multiplexing transmit channels between different frequency bands or between different antenna elements. As shown in Figure 1, it mainly includes the following steps:
  • Step S110 in the first time interval, the first group of transmitting channels transmit signals to the first geographic area through the first group of antenna units in a first frequency band with a first transmission bandwidth, and the first transmission bandwidth is first.
  • the time interval is less than or equal to the width of the first frequency band.
  • Step S120 Use a first set of transmit channels on the second frequency band or transmit signals on the third set of antenna elements using the first set of transmit channels in a second time interval after the first time interval.
  • the step of using the first set of transmit channels on the second frequency band is: the first set of transmit channels and the second set of transmit channels use the second transmit bandwidth on the second frequency band to simultaneously transmit to the second geographic area in a coordinated manner Signal, the first set of transmit channels uses the first set of antenna elements, the second set of transmit channels uses a second set of antenna elements, the second transmit bandwidth is less than or equal to the width of the second frequency band, and the second frequency band is in the first frequency band There is no intersection in the frequency domain, and the second geographic area is the same as or overlaps with the first geographical area;
  • the steps of using the first set of transmit channels on the third set of antenna elements are: a first set of transmit channels using a third set of antenna elements, a fourth set of transmit channels using a fourth set of antenna elements, a first set of transmit channels and a fourth set of transmit channels
  • the transmitting channel uses the same carrier frequency on the first frequency band or on the second frequency band to simultaneously transmit signals to the second geographical area in a coordinated manner.
  • the second geographic area is different from the first geographical area or overlaps Geographical area.
  • the step of identifying a terminal that needs to use the first set of transmission channels from the terminal served by the second frequency band includes at least one of the following methods: Identifying, by using a channel impulse response generated by a channel sounding reference signal (SRS) transmitted by a terminal served by the second frequency band on the second frequency band, a terminal that needs to use the first group of transmission channels;
  • SRS channel sounding reference signal
  • the channel measurement information reported by the terminal served by the second frequency band is used, wherein the channel measurement information reported by the terminal using the second frequency band service is measured in the second time interval.
  • the channel impulse response generated by the sounding reference signal to identify a terminal that needs to use the first set of transmit channels, including the following method: When the channel impulse response indicates that the terminal can receive multiple streams on the second frequency band and only When a set of transmit channels is configured to the second frequency band to achieve the required number of transport streams, the terminal is determined to be a terminal that needs to use the first set of transmit channels on the second frequency band; or
  • the terminal is determined to be a terminal that needs to use the first group of transmission channels on the second frequency band.
  • the step of using the channel measurement information reported by the terminal served by the second frequency band to identify the terminal that needs to use the first group of transmission channels includes one of the following methods:
  • the terminal is determined to be in need of a terminal using the first set of transmit channels on the second frequency band;
  • the terminal is determined to need to use the first group of transmissions on the second frequency band. The terminal of the channel.
  • the step of identifying a terminal that needs to use the first group of transmission channels from the terminal served by the cell to which the third group of antenna units belongs includes:
  • the channel measurement information of the transmitted signal information is measured by using the measurement information reported by the terminal in the cell to which the third group of antenna elements belongs.
  • the channel measurement information reported by the terminal includes at least one of the following information:
  • the terminal instructs the rank of the channel impulse response matrix reported by the measurement in the second time interval or the rank of the channel impulse response matrix.
  • Step S130 configuring, in a third time interval after the second time interval, at least one of the first group of transmission channels configured on the second frequency band to be configured on the first frequency band; or in the third time interval, At least one of the first set of transmit channels disposed on the third set of antenna elements is configured to the first set of antenna elements.
  • the second time interval is a time interval composed of a downlink time slot included in a radio frame on the second frequency band or the third group of antenna elements, and/or a time interval formed by a sub-interval of the downlink time slot included in the radio frame Interval.
  • Determining the width and/or starting position of the second time interval may be one or a combination of the following:
  • the first group of antenna units, the third group of antenna units and the second group of antenna units are antenna units arranged on the same site; the first group of transmission channels and the second group of transmission channels are configured at the same station.
  • the transmission channel on the site is configured at the same station.
  • the frequency band used in the first frequency band is a time division duplex mode
  • the second frequency band is a downlink frequency band used for frequency division duplexing
  • the start position of the second time interval on the second frequency band is determined at One or more time subintervals composed of uplink time slots on the first frequency band, and the width of the second time interval is less than or equal to the time subinterval;
  • Both the first frequency band and the second frequency band are frequency bands used in time division duplex mode, and the uplink time slot of the time division duplex radio frame on the first frequency band and the downlink time division duplex radio frame on the second frequency band
  • the start position of the second time interval on the second frequency band is determined in a time interval in which the uplink time slot and the downlink time slot occur simultaneously, and the width of the second time interval is less than or equal to the uplink and downlink. The time interval in which the time slots occur simultaneously.
  • the width and/or the starting position of the second time interval is determined according to a predetermined starting position and time width
  • the downlink channel of the terminal of the first group of transmission channels is configured on a time-frequency resource composed of the second time interval and the second frequency band;
  • the difference in quantity, the downlink channel of the terminal that needs to use the first group of transmission channels is configured in a second time interval included in the radio frame transmitted by the third group of antenna units.
  • the second time interval is determined according to a time width and/or a starting position of the idle time slot on the first frequency band, between different frequency bands, or in a time division multiplexing transmission channel between different antenna units, specifically
  • the implementation method can be:
  • a second time interval in a time interval consisting of idle time slots on the first frequency band wherein the idle time slot is due to a small downlink traffic load on the first frequency band, and at least some time slots are idle in the first frequency band. Or, because there is no downlink traffic activity on the first frequency band, the time slot is idle in the first frequency band.
  • the first set of transmission channels need to be used and/or need not be used in a group of terminals served according to the first frequency band.
  • the service data transmission rate, determining the width and/or the starting position of the second time interval includes at least one of the following two methods.
  • Step 1 selecting, from the terminals serving the first frequency band, a first type of terminal that needs to use the first group of transmission channels on the first frequency band;
  • Step 2 determining the width of the first time interval according to the number of terminals using the first group of transmission channels on the first frequency band or the total service data transmission rate of such terminals, and determining the second time outside the first time interval. The starting position of the interval.
  • Step 1 selecting, from the terminals serving the second frequency band, terminals that need to use the first group of transmission channels on the second frequency band;
  • Step 2 the number of terminals using the first group of transmission channels on the second frequency band as needed or The total service data transmission rate of such a terminal determines the width of the second time interval.
  • the specific process of determining the location of the second time interval may be:
  • the time slot configuration of the terminal in the second frequency band that needs to use the first group of transmission channels is orthogonal in time; the time interval formed by the time slots occupied by the terminals in the first frequency band that need to use the first group of transmission channels is taken as the first a time interval; a start time of the second time interval is configured to be used outside the first group interval on the second frequency band.
  • the step of width and/or starting position includes at least one of the following two methods.
  • Step 1 selecting, from a group of terminals served by the cell to which the first group of antenna units are served, a terminal that needs to use the first group of transmission channels on the first group of antenna units;
  • Step 2 determining the width of the first time interval according to the number of terminals using the first group of transmission channels or the total service data transmission rate of such terminals on the first group of antenna units, and in the first time interval The starting position of the second time interval is determined outside.
  • Step 1 selecting, from a group of terminals served by the cell belonging to the third group of antenna units, a terminal that needs to use the first group of transmission channels on the third group of antenna units;
  • Step 2 Determine the width of the second time interval according to the number of terminals using the first group of transmission channels or the total service data transmission rate of such terminals on the third group of antenna units.
  • the step of determining the starting position of the second time interval outside the first time interval includes:
  • the downlink channels that need to use the first group of transmission channels and the downlink channels of the terminals that do not need to use the first group of transmission channels are configured on different time slots in a group of terminals that are served by the cell to which the first group of antenna units are served;
  • the downlink channels that need to use the first group of transmission channels and the downlink channels of the terminals that do not need to use the first group of transmission channels are configured on different time slots in a group of terminals that are served by the cell to which the third group of antenna units belong;
  • the first group of transmissions needs to be used in a group of terminals that are served by a cell to which the first group of antenna units are to be served, and a terminal that needs to use the first group of transmission channels and a group of terminals that are served by a cell to which the third group of antenna units are served
  • the slot configuration of the terminal of the channel is orthogonal in time
  • the group of terminals that are served by the cell to which the first group of antenna elements are to be served need to use the first group of terminals to be served by the cell to which the third group of antenna elements belong to need to use the first to be configured outside the first time interval.
  • the start time of the second time interval The start time of the second time interval.
  • the signals are simultaneously transmitted to the second geographical area in a coordinated manner, and the cooperation may be performed in one of the following manners.
  • the specific implementation method may be:
  • the first time interval is a time interval composed of uplink time slots of the time division duplex system
  • the first frequency band is a frequency band used in a time division duplex mode
  • the second frequency band is a downlink frequency band used in a frequency division duplex mode or a downlink one direction.
  • the frequency band used, the third time interval is composed of the uplink time slots of the time division duplex system.
  • the time interval, the second group of transmission channels is a transmission channel working in accordance with the technical specifications of the FDD system in the second frequency band or a transmission channel working in accordance with the radio broadcast technical specification, and is configured in the first frequency band and the second frequency band in a time division manner.
  • the transmit bandwidth and/or the center frequency of the first set of transmit channels, the second time interval in which the first set of transmit channels transmit signals on the second set of frequency bands is within a time interval formed by the upstream time slots on the first frequency band.
  • the specific implementation method may be:
  • the first time interval is a time interval composed of uplink time slots of the time division duplex system
  • the first frequency band and the second frequency band are frequency bands used in time division duplex mode
  • occurrences on the first frequency band
  • the time slot is an uplink time slot or an idle time slot
  • the time slot appearing on the second frequency band is a downlink time slot
  • the transmission bandwidth of the first group of transmission channels is configured in the first frequency band and the second frequency band in a time division manner and/or Center frequency.
  • the specific implementation method may be:
  • the first time interval is a time interval composed of downlink time slots of the frequency division duplex system; the first frequency band and the second frequency band are both downlink frequency bands used in frequency division duplex mode; or, the first time interval is a time division duplex system
  • the time interval formed by the downlink time slots, the first frequency band and the second frequency band are both frequency bands used in time division duplex mode; in the second time interval, the time slots on the first frequency band are idle time slots or are not used
  • a downlink time slot of a group of transmission channels, and a downlink time slot appearing on the second frequency band is a time slot configured for the following terminals:
  • the specific configuration is one of the following ways:
  • the method for multiplexing the transmission channels between the antenna units may be a specific implementation method.
  • Inter-cell multiplexing between TDD-FDD specifically includes:
  • the first set of transmit channels uses a third set of antenna elements
  • the fourth set of transmit channels uses a fourth set of antenna elements
  • the third set of antenna elements is one of the following antennas:
  • the first time interval is a time interval composed of downlink time slots of the time division duplex system
  • the first frequency band is a frequency band used in a time division duplex mode
  • the second time interval is a time time composed of a downlink time slot of a system to which the third group of antenna elements belongs In the interval, the third group of antenna elements transmits signals on the second frequency band, and the second frequency band is used in the frequency division duplex mode.
  • the fourth group of transmission channels is a transmission channel operating in accordance with the technical specifications of the FDD system in the second frequency band, and the first frequency band used by the first group of antenna elements and the second frequency band used by the fourth group of antenna elements in the time division manner of the network side
  • the transmission bandwidth and the center frequency of the first group of transmission channels are configured, and the second time interval of the first group of transmission channels transmitting signals in the second frequency band is located in a time interval formed by the uplink time slots on the first frequency band, and the first group of transmissions
  • the second geographic area covered by the third set of antenna element transmit signals used by the channel is a different geographic area than the first geographical area covered by the first set of antenna element transmit signals or a geographical area where there is overlap.
  • the specific implementation method may be:
  • the first set of transmit channels uses a third set of antenna elements
  • the fourth set of transmit channels uses a fourth set of antenna elements
  • the first set of antenna elements, the third set of antenna elements, and the fourth set of antenna elements are antenna elements used by the FDD system, Or an antenna unit used by the TDD system
  • the first group of antenna units and the third group of antenna units are antenna units covering different cells on the same site.
  • the first time interval is a time interval composed of downlink time slots of the frequency division duplex system, or a time interval composed of downlink time slots of the time division duplex system; the first group of transmission channels is used on the third antenna unit
  • the first frequency band is transmitted, or the first group of transmission channels is transmitted on the third antenna unit using the second frequency band, and in the second time interval, when the first group of transmission channels transmits signals on the third group of antenna elements
  • the gap is the idle time slot of the system to which the first antenna unit belongs or the time slot in which the first group of transmission channels is not used in the system to which the first antenna unit belongs, and the downlink time slot appearing on the third group of antenna elements in the second time interval is Configure the time slot for the following terminals:
  • the first set of transmit channels are configured in a time division manner between the first set of antenna elements and the third set of antenna elements.
  • the present invention provides a method of scheduling transmission channels adapted to multiplex transmission channels between different frequency bands or between different antenna elements. As shown in Figure 2 and Figure 7, it mainly includes the following steps:
  • the terminal receiving the signal on the two frequency bands is divided into a terminal that needs to use the first group of transmission channels and a terminal that does not need to use the first group of transmission channels according to different antenna units used when receiving the signal, specifically: Terminals that do not require the use of the first set of transmit channels on the second frequency band: only need to receive or only receive signals transmitted from the antenna elements included in the second set of antenna elements on the second frequency band;
  • the following terminal is judged as the terminal that needs to use the first group of transmission channels:
  • a terminal that only needs to receive or is only capable of receiving signals transmitted from antenna elements included in the first group of antenna elements or the third group of antenna elements in the second frequency band;
  • Step S220 determining a second time interval used by the terminal that needs to use the first group of transmission channels, and selecting a sub-interval in the following time interval as the second time interval, and in the second time interval, To configure the downstream channel using the terminals of the first set of transmit channels:
  • a second time interval is determined outside the activation time interval of the first set of transmit channels on the first frequency band, see FIG.
  • Step S230 assigning the first group of transmission channels to use the third group of antenna units on the second frequency band or using the first group of antenna units in the second time interval; using the third group of antenna units or using the first group of transmission channels During the transmission of a group of antenna elements, the terminal that needs to use the first group of transmission channels performs at least one of the following activities:
  • the activation time interval of the first group of transmission channels on the first frequency band is a time interval determined according to the following method, see Figure 7:
  • the terminal that receives the signal on the first frequency band is divided into a terminal that needs to use the first group of transmission channels and a terminal that does not need to use the first group of transmission channels; specifically:
  • the following terminal is judged as a terminal that does not need to use the first set of transmission channels:
  • the following terminal is judged as the terminal that needs to use the first group of transmission channels:
  • the activation time interval of the first set of transmit channels on the first frequency band is configured over a time interval of the received signal on the first frequency band of the terminal requiring the use of the first set of transmit channels.
  • the channel is measured between the third group of antenna units and the terminal receiving antenna, and the terminal measures one or more of the following parameters including the role of the third group of antenna unit transmitting signals:
  • CQI Channel Quality Indication
  • the terminal reports the measurement result and the network side uses the result to transmit data to the terminal on the second frequency band in the second time interval in which the second frequency band appears second time.
  • the assigning the first set of transmit channels is transmitted on the second frequency band using the third set of antenna elements in a second time interval, including:
  • the first set of transmit channels transmitted on the first frequency band using the first set of antenna elements are scheduled to the second frequency band and the third set of antenna elements are transmitted on the second frequency band.
  • the third antenna element has the same antenna unit as the first antenna element, the first group
  • the frequency bands used by the first group of transmission channels on the first group of sky units and the second group of antenna elements may be the same frequency band, or different. Frequency band.
  • the assigning the first set of transmit channels is transmitted using the first or third set of antenna elements in a second time interval, including:
  • the first set of transmit channels are transmitted using the first set of antenna elements when the two adjacent camps reside on the second frequency band, or the first set of transmit channels are transmitted when the third set of antenna elements are used twice adjacently, the first set of transmit channels
  • the channel uses the same local oscillator to ensure that the first set of transmit channels are consecutive in phase in the two second time intervals that occur sequentially on the same frequency band or on the same set of antenna elements.
  • Embodiments of the present invention provide a system for time division multiplexed transmit channels adapted to time division multiplex transmit channels between different frequency bands on the same set of antenna elements, or time division multiplexed transmit channels between different antenna elements. As shown in FIG. 8, the system may be one of the following ways to form a system for time division multiplexing transmission channels according to different application scenarios:
  • Mode 1 of a system constituting a time division multiplexed transmission channel which is suitable for time division multiplexing transmission channels between different frequency bands on the same group of antenna elements, the system comprising:
  • a first group of antenna units 801 including at least one antenna unit, a first group of transmission channels 804 including at least one frequency point and/or a transmission channel with adjustable transmission bandwidth, a terminal scheduling unit 805, and a transmission channel scheduling unit 806 A system constituting a time division multiplexed transmission channel on an antenna unit included in the same antenna array.
  • the terminal scheduling unit 805 is configured to allocate, on the second frequency band and/or the first frequency band, a downlink channel resource for the terminal that needs to use the first group of the transmission channel 804, and need to use the first group of antenna elements in the first frequency band.
  • the downlink channel of the terminal receiving the signal transmitted by the first group of transmission channels is configured over a first time interval, and/or the signal transmitted by the first group of transmission channels from the first group of antenna elements is required to be received on the second frequency band
  • the downlink channel of the terminal is configured in the second time interval.
  • a transmitting channel scheduling unit 806, configured to configure a first group of transmitting channels 804 in a time division multiplexing manner between the first frequency band and the second frequency band, where the first group of transmitting channels 804 are configured in the first time interval
  • the state on the frequency band, in a second time interval, the first set of transmit channels 804 are in a state of being placed on the second frequency band.
  • the first group of transmitting channels 804 are configured to adjust the center frequency of the transmitting channel and/or the transmitting bandwidth of the transmitting channel according to the control of the transmitting channel scheduling unit 806 to form a second parameter configuration state 804a of the first group of transmitting channels, to be second.
  • the parameter configuration state 804a uses the first set of antenna elements 801 to transmit signals to the terminal on the second frequency band for the second time interval on the second time interval.
  • the manner in which the first set of transmit channels 804 transmit signals is one of the following:
  • the first set of transmit channels 804 are independently transmitted on the second frequency band using the first set of antenna elements 801;
  • the first group of transmission channels 804 are co-transmitted with the second group of antenna elements 802 on the second frequency band, and the second group of antenna elements 802 and the first group of antenna elements 801 are The same antenna array is deployed on the same site; wherein the system further includes the second group of antenna elements 802 including at least one antenna unit;
  • the first group of transmission channels are cooperatively transmitted on the second frequency band by using the first group of antenna units 801 and the fifth group of antenna units, and the fifth group of antenna units are antennas deployed on the adjacent stations with the first group of antenna units.
  • the system further includes the fifth group of antenna elements including at least one antenna unit.
  • Terminal scheduling unit 805 a transmission channel scheduling unit 806 constitutes a system for time division multiplexing transmission channels between a first group of antenna units belonging to the first antenna array and a third group of antenna units belonging to the second antenna array, first The antenna array and the second antenna array are used for different serving cells.
  • the terminal scheduling unit 805 is configured to assign, in the first frequency band and/or the second frequency band, a downlink channel of the terminal that needs to use the third group antenna unit 803 in a second time interval, and/or The downlink channel of the terminal that needs to use the first group of antenna units 801 in the terminal served by the first frequency band is assigned in the first frequency band in the first time interval.
  • the transmitting channel scheduling unit 806 is configured to configure the first group of transmitting channels 804 in a time division multiplexing manner between the first group of antenna units 801 and the third group of antenna units 803, and the first group of transmitting channels 804 in the first time interval. In a state of being disposed on the first group of antenna elements 801, the first group of transmission channels 804 are in a state of being disposed on the third group of antenna elements 803 in the second time interval.
  • the first group of transmitting channels 804 are configured to adjust the center frequency of the transmitting channel and/or the transmitting bandwidth of the transmitting channel according to the control of the transmitting channel scheduling unit 806 to form a third parameter configuration state 804b, and configure the state 804b with the third parameter.
  • the three sets of antenna elements 803 transmit signals to the terminals on the downlink channel in the second time interval.
  • the system may further include:
  • a terminal classification unit configured to identify, from the terminal served by the second frequency band and/or from the terminal of the first frequency band service, a terminal that needs to use the first group of transmission channels.
  • system may further include:
  • a terminal classification unit configured to identify, from terminals serving the service cell to which the third group of antenna units belong, and/or terminals that need to use the first group of transmission channels from terminals served by the service cell to which the first group of antenna units belong.
  • the terminal categorizing unit in the system configuration mode 1 is configured to identify, by using at least one of the following methods, a terminal that needs to use the first group of transmitting channels from the terminal served by the second frequency band: using the second frequency band
  • the channel impulse response generated by the serving terminal's channel sounding reference signal transmitted on the second frequency band identifies the terminal that needs to use the first group of transmitting channels;
  • the channel measurement information reported by the terminal served by the second frequency band is used, wherein the measurement information reported by the terminal that needs to use the first group of transmission channels is measured in the second time interval.
  • the terminal classifying unit in the system configuration mode 1 is configured to identify, by using at least one of the following methods, a terminal that needs to use the first group of transmitting channels from the terminal served by the first frequency band: using the first frequency band The channel impulse response generated by the serving terminal on the first frequency band to identify the terminal that needs to use the first group of transmission channels;
  • the channel measurement information reported by the terminal served by the first frequency band is used, wherein the measurement information reported by the terminal that needs to use the first group of transmission channels is measured in the first time interval.
  • the system constituting the terminal classification unit in the first mode when the channel impulse response indicates that the terminal can receive the multi-stream transmission on the second frequency band, and only configures the first group of transmission channels to the second frequency band and uses the first
  • the terminal is determined to be a terminal that needs to use the first group of transmission channels on the second frequency band.
  • the terminal classifying unit in the system configuration mode 1 is configured to identify, by using the channel measurement information reported by the terminal served by the second frequency band, the terminal that needs to use the first group of transmitting channels:
  • the terminal When the channel measurement information reported by the terminal indicates that the terminal can receive the multi-stream transmission on the second frequency band and only configures the first group of transmission channels to the second frequency band and uses the first group of antenna units to transmit, the terminal is determined to be a terminal that needs to use the first set of transmit channels on the second frequency band; or
  • the terminal When the channel measurement information reported by the terminal indicates that only the first group of transmission channels are configured to the second frequency band and the first group of antenna units are used for transmission to achieve the transmission power or transmission rate required by the terminal, the terminal is determined to be in need of A terminal of the first set of transmit channels is used on the second frequency band.
  • the system is configured by the terminal classification unit in the second mode, where the terminal sends a channel sounding reference signal to the third group of antenna units on the first frequency band or the second frequency band, and generates a channel according to the channel sounding reference signal.
  • the impact response is used to identify the terminal that needs to use the first group of transmission channels on the third group of antenna units; and the third group of antennas measured in the second time interval reported by the terminal in the cell to which the third group of antenna units belongs
  • the unit transmits channel measurement information of the signal information, and/or channel measurement information that is measured by the terminal in the cell to which the third group of antenna units belongs and that does not include the third group of antenna unit transmission signal information measured in the first time interval.
  • the channel measurement information reported by the terminal includes at least one of the following information:
  • the terminal estimates the rank of the channel impulse response matrix or the rank of the channel impulse response matrix according to the measurement in the second time interval.
  • the terminal When the signal-to-interference ratio or channel quality information of the received channel measured by the terminal in the first time interval cannot meet the data transmission rate requested by the terminal, the terminal is identified as needing to use the first group on the third group antenna.
  • the terminal of the transmitting channel
  • the rank of the channel impulse response matrix measured in the second time interval reported by the terminal or the indication information of the rank indicates that the rank of the channel impulse response matrix or the indication information of the rank can be achieved only by using the first group of transmission channels.
  • the terminal is judged to be a terminal that needs to use the first group of transmission channels on the third group of antennas.
  • the manner in which the first set of transmit channels 804 transmit signals is one of the following:
  • the first set of transmit channels 804 are independently transmitted using the third set of antenna elements 803 on the first frequency band or the second frequency band;
  • the first group of transmission channels 804 are co-transmitted with the fourth group of antenna elements 803 on the first frequency band or the second frequency band, the fourth group of antenna elements 808 and the third group of antennas.
  • the unit 803 is deployed on the same site to cover the same service cell; wherein the system further includes the fourth group of antenna units 808 including at least one antenna unit;
  • the first group of transmission channels 804 are cooperatively transmitted with the sixth group of antenna elements on the first frequency band or the second frequency band, and the sixth group of antenna elements are deployed with the third group of antenna elements.
  • the terminal scheduling unit 805 is configured to select, from the second frequency band and/or the terminal served by the first frequency band, the terminal that needs to use the first group of transmission channels according to the classification result of the terminal classification unit. Specifically, the terminal scheduling unit 805 is configured to configure the downlink channel in the second time interval for the selected terminal that needs to use the first group of transmission channels on the second frequency band, and/or to select the required frequency on the first frequency band. The terminal using the first set of transmit channels configures the downlink channel over the first time interval.
  • the terminal scheduling unit 805 is configured to configure the downlink channel in the second time interval for the terminal that needs to use the first group of transmission channels 804 in the first frequency band or the second frequency band by using the third group antenna unit 803, and Or configuring a downlink channel for a terminal that needs to use the first set of transmit channels 804 over the first frequency band by the first set of antenna elements 801.
  • the terminal scheduling unit 805 is configured to select, according to the classification result of the terminal classification unit, the first group to be used from the terminal served by the cell to which the third group of antenna units 803 belongs and/or from the terminal served by the cell to which the first group of antenna units 801 belong.
  • the terminal of the transmitting channel Further, the terminal scheduling unit 805 is configured to configure the downlink channel in the second time interval for the selected terminal that needs to use the first group of transmission channels on the third group of antenna units, and/or to select the required first
  • the terminal on the antenna unit using the first group of transmission channels configures the downlink channel in the first time interval.
  • the sub-intervals in the following time interval are selected as the second time interval 702, and the first group is selected for the terminal served from the cell to which the third group of antenna elements 803 belong.
  • the terminal of the transmit channel configures the downlink channel in the second time interval 702:
  • the predetermined time slot is a time slot specified on the second frequency band and used to transmit data to the terminal by using the first group of transmission channels, and the time interval of the predetermined time slot and the first group of transmission channels on the first frequency band is Orthogonal in time.
  • the transmitting channel scheduling unit is configured to determine the second time interval by using at least one of the following manners:
  • the predetermined time slot is a time slot designated on the third group of antenna elements to transmit a signal to the terminal using the first group of transmission channels, and the predetermined time slot and the first group of transmission channels are stationed on the first frequency band.
  • the time interval is orthogonal in time.
  • the first group of transmission channels used in time division multiplexing mode may be one of the following circuit unit combinations:
  • an RF circuit unit including a radio frequency power amplifier
  • a radio frequency circuit unit including a radio frequency power amplifier, a D/A conversion circuit unit;
  • a radio frequency circuit unit including a radio frequency power amplifier, a D/A conversion circuit unit, and a circuit unit for performing baseband processing on the data to be transmitted;
  • a radio frequency circuit unit including a radio frequency power amplifier, an intermediate frequency circuit unit corresponding to the radio frequency power amplifier, a D/A conversion circuit unit, and a circuit unit for performing baseband processing on the data to be transmitted.
  • the first group of transmitting channels use the first group of antenna units to transmit signals when they are camped on the second frequency band twice, or the first group of transmitting channels use the third group of antenna units to transmit signals when adjacent to the second group.
  • the first set of transmit channels uses the same local oscillator to ensure that the first set of transmit channels are in phase on the same frequency band or in two second time intervals that occur sequentially on the same set of antenna elements. It is continuous.
  • the transmitting of the signal to the terminal on the first frequency band and the receiving of the signal from the terminal in the first frequency band are different antenna units, and the first group of antenna units is an antenna unit that transmits a signal to the terminal.
  • the first set of transmit channels uses a first transmit filter when transmitting signals to the terminal using the first set of antenna elements on the first frequency band, and the first receive filter is used for antenna elements for receiving signals on the first frequency band;
  • the first transmit filter and the first receive filter are different filters.
  • the signal transmitted by the serving cell belonging to the third group of antenna units to the terminal in the third group of antenna units and the signal received from the terminal are different antenna units
  • the third group of antenna units is An antenna unit that transmits a signal to a terminal using a first frequency band or a second frequency band in a cell to which it belongs.
  • the first group of transmission channels uses a second transmit filter when transmitting signals to the terminal using the third group of antenna elements, and the second receive filter is used when the service cell to which the third group of antenna units belongs receives signals from terminals in service;
  • the second transmit filter and the second receive filter are different filters.
  • the base station transmitting signal and the receiving signal are both shared antennas, and the radio frequency structure is complicated, the channel RF loss is large, and the transmission channel is time-division multiplexed.
  • the mixed network of TDD and FDD there is originally a set of TDD antennas and a set of FDD antennas.
  • the function of transmitting signals is realized by one set of antennas, and the function of receiving signals is received. It is realized by another set of antennas, and the comprehensive performance of signal transmission and reception is improved without increasing the number of antennas.
  • the system structure of the phase separation of the transmitting and receiving antennas is particularly suitable for application in the system configuration mode 1.
  • the FDD system shares the transmitting antenna with the TDD system, and the transmitting antenna and the receiving antenna of the TDD are differently deployed.
  • Antenna unit in TDD The working frequency and transmission bandwidth of the first group of transmitting channels are configured in a time division manner in the system band and the FDD system band; or the transmitting antennas are shared on two TDD bands having sufficient isolation bandwidth, and the transmitting antennas and receiving in the two TDD bands.
  • the antennas are different antenna units deployed separately, and the operating frequency and transmission bandwidth of the first group of transmission channels are configured in a time division manner on two TDD bands.
  • the first group of antenna elements and the third group of antenna elements use the same or different frequency bands.
  • the first frequency band is a TDD frequency band that performs bidirectional transmission in a time division manner.
  • the second frequency band is a downlink frequency band in the FDD frequency band that is transmitted in a frequency division manner.
  • the first frequency band is a TDD frequency band located in the frequency range of 2570 to 2620 MHz, or a TDD frequency band located in the range of 2010 to 2025 MHz, or a TDD frequency band located near 700 MHz, or a segment of the terrestrial television broadcasting frequency band is not The idle frequency band used by the television broadcasting system;
  • the second frequency band is the FDD downlink frequency band in the frequency range of 2500 ⁇ 2690MHz, or the FDD downlink frequency band near 2G, or the FDD frequency band located near 700MHz, or a section in the terrestrial television broadcasting frequency band There is no free band used by the television broadcast system.
  • the first time interval is a time interval formed by a downlink time slot in the TDD radio frame on the first frequency band, and in the first time interval, there are 8 transmission channels on the downlink time slot of the TDD radio frame on the first frequency band. Radio frequency signal transmission is performed on 8 different antennas, and the specific transmission mode is beamforming mode.
  • the second time interval is a time interval formed by the downlink time slots in the FDD radio frame on the second frequency band, and in the second time interval, the first of the eight transmission channels disposed on the first frequency band in the first time interval.
  • the first and second transmission channels are disposed on the second frequency band, and the third and fourth transmission channels of the eight transmission channels disposed on the first frequency band in the first time interval are disposed on the third frequency band.
  • the transmission slots of the third transmission channel and the fourth transmission channel on the third frequency band are time aligned with the time slots of the first group of transmission channels and the second transmission channel on the second frequency band, or are staggered in time. .
  • the first set of transmit channels and the second transmit channel cooperate in a second frequency band with other transmit channels on the second frequency band in a space-time coded manner, or in a transmit diversity manner.
  • the time slot of the TDD radio frame on the first frequency band and the time slot of the FDD radio frame on the second frequency band maintain a determined time delay relationship, specifically, the first time slot of the radio frame on the first frequency band
  • the time difference from the first time slot on the second radio frame is a fixed value, or the error of the time difference is less than a predetermined range.
  • the LTE TDD system is deployed on the first frequency band, the LTE FDD system is deployed on the second frequency band, or the UMTS HSDPA system is deployed on the second frequency band.
  • the first frequency band and the second frequency band are both time division duplex ( TDD)
  • TDD time division duplex
  • the first frequency band and the second frequency band are combinations between the following TDD bands:
  • the TDD band in the frequency range of 2570 ⁇ 2620MHz;
  • a frequency band used in the TDD mode selected from a free band of the terrestrial television broadcasting band that is not used by the television broadcasting system.
  • the uplink and downlink time slots in the TDD radio frame on the first frequency band are asynchronously arranged with the uplink and downlink time slots in the TDD radio frame on the second frequency band, that is, in the time slots included in the TDD radio frame on the first frequency band. At least in the time interval in which one uplink time slot/downlink time slot occurs, a downlink time slot/uplink time slot appears on the radio frame on the second frequency band.
  • the first time interval is a time interval formed by a downlink time slot in the TDD radio frame on the first frequency band, and in the first time interval, there are 8 transmission channels on the downlink time slot of the TDD radio frame on the first frequency band.
  • the radio frequency signal is transmitted on eight different antennas, and the specific transmission mode is a beamforming mode or a multi-stream parallel transmission MIMO mode.
  • the second time interval is a time interval formed by the downlink time slots in the TDD radio frame on the second frequency band, and in the second time interval, a part of the 8 transmission channels arranged in the first frequency band is selected in the first time interval.
  • the transmitting channel or all the transmitting channels are selected as the first group of transmitting channels, and the first group of transmitting channels are disposed in the second frequency band, where the second time interval is when the TDD is down in the second frequency band having the following two conditions simultaneously
  • the time interval formed by the gap (1) is a time interval formed by a downlink time slot on the second radio frame;
  • the first group of transmission channels cooperate in a second frequency band in a transmit diversity manner, or in a beamforming manner, or in a multi-stream parallel transmission (MIMO) manner; or,
  • the group transmit channel and the other transmit channels on the second frequency band work in a transmit diversity manner on the second frequency band, or in a beamforming manner, or in a multi-stream parallel transmission (MIMO) manner.
  • the time difference from the first time slot on the second radio frame is a fixed value, or the error of the time difference is less than a predetermined range.
  • the LTE/LTE-A TDD system is deployed on the first frequency band, or the first TDD system is deployed on the first frequency band, and the second TDD system, the first TDD system and the second TDD are deployed on the second frequency band.
  • the system is part of a different wireless technology specification.
  • the first frequency band and the second frequency band are both in frequency.
  • the downlink frequency band used in the duplex mode (FDD) mode, or the first frequency band and the second frequency band are frequency bands on the downlink transmission time slot used in the time division duplex (TDD) mode.
  • FDD duplex mode
  • TDD time division duplex
  • the multi-carrier system using the same wireless technology described in this embodiment is an LTE TDD/FDD multi-band (carrier) aggregation system discussed in 3GPP, or a UMTS HSDPA multi-band (carrier) aggregation system discussed in 3GPP, for example, now in 3GPP. Discussion of the discontinuous 4-carrier HSDPA (NC-4C-HSDPA).
  • the first frequency band and the second frequency band are one of the following FDD bands:
  • the first frequency band and the second frequency band are two sub-frequencys used by the FDD LTE multi-carrier system for carrier aggregation in one continuous frequency band or on a non-continuous frequency band, and the discontinuous frequency band is discontinuous between bands (Inter Band non-contigual ) or in-band non-contigual, the first frequency band is covered by the transmission bandwidth of the first group of transmission channels, and the second frequency band is covered by the transmission bandwidth of the second group of transmission channels, and Limited by the implementation of the technology or in the system configuration, the transmission bandwidth of the first group of transmission channels and the transmission bandwidth of the second group of transmission channels cover the first frequency band and the second frequency band;
  • the first frequency band and the second frequency band are two sub-frequency used by carrier aggregation in a discontinuous frequency band of the UMTS HSDPA multi-carrier system, and the discontinuous frequency band is inter band non-contigual or in-band discontinuous (Intra band non-contigual), the specific in-band discontinuous spectrum usage mode is the spectrum usage mode of non-continuous 4-carrier HSDPA (NC-4C-HSDPA);
  • the first frequency band is covered by the emission bandwidth of the first group of transmission channels
  • second The frequency band is covered by the transmission bandwidth of the second group of transmission channels, and the first frequency band is covered when the transmission bandwidth of the first group of transmission channels and the transmission bandwidth of the second group of transmission channels are different due to technical implementation limitations or system configuration requirements.
  • the second frequency band is covered by the emission bandwidth of the first group of transmission channels.
  • the first time interval is a time interval formed by the downlink time slots in the FDD radio frame on the first frequency band, and in the first time interval, there are four transmission channels on the downlink time slot of the FDD radio frame on the first frequency band.
  • RF signal transmission is performed on four different antenna units, and the specific transmission mode is a method of transmitting diversity, or a beamforming method, or a multi-stream parallel transmission (MIMO) method, and four antenna units are first.
  • the antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit are configured, and in the second frequency band, the second group of transmitting channels use the third antenna unit and the fourth antenna unit to transmit signals, and the second group of transmitting channels includes two Transmitting channels: a third transmitting channel using a third antenna unit and a fourth transmitting channel using a fourth antenna unit.
  • the second time interval is a time interval formed by the downlink time slots in the FDD radio frame on the second frequency band, and in the second time interval, the first group of transmission channels configured on the first frequency band are configured to the first time interval to Transmitting signals on the second frequency band using the first antenna unit and the second antenna unit, the first group of transmission channels including a first group of transmission channels using the first antenna unit on the first frequency band and a second transmission channel using the second antenna unit .
  • the first set of transmit channels cooperate in a second frequency band in a transmit diversity manner, or in a beamforming manner, or in a multi-stream parallel transmission (MIMO) manner; or,
  • the group transmit channel and the second set of transmit channels on the second frequency band are in a transmit diversity manner on the second frequency band, or in a beamforming manner, or Work together in multi-stream parallel transmission (MIMO).
  • MIMO multi-stream parallel transmission
  • the specific determination method of the second time interval is as follows:
  • the time slot of the FDD radio frame on the first frequency band and the time slot of the FDD radio frame on the second frequency band maintain a determined time delay relationship, specifically, the first time slot of the radio frame on the first frequency band
  • the time difference from the first time slot on the second radio frame is a fixed value, or the error of the time difference is less than a predetermined range.
  • the first frequency band and the second frequency band are all used in a frequency division duplex (FDD) manner.
  • the downlink frequency band specifically, the first frequency band is the frequency band used by the LTE FDD multi-antenna system discussed in 3GPP
  • the second frequency band is the frequency band used by the UMTS HSDPA multi-antenna system discussed in 3GPP
  • the first set of transmission channels are in the first frequency band and
  • the configuration on the second frequency band is: the first group of transmission channels configures their transmission bandwidth and transmission power in accordance with the LTE FDD specification on the first frequency band, and the first group of transmission channels complies with the UMTS technical specification on the second frequency band, and Due to technical implementation limitations or in the need of system configuration, the transmit bandwidth of the first set of transmit channels in the first time interval covers only the first frequency band and does not cover the second frequency band.
  • the first time interval is a time interval formed by downlink time slots in the FDD LTE radio frame on the first frequency band, and in the first time interval, there are 4 downlink time slots of the FDD LTE radio frame on the first frequency band.
  • the transmitting channel performs radio frequency signal transmission on four different antenna units, and the specific transmission mode is a method of transmitting diversity, or a beamforming method or a multi-stream parallel transmission (MIMO) method, and four antenna units are operated by The first antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit are configured, and the second group of transmission channels transmit signals according to the UMTS HSDPA technical specification using the third antenna unit and the fourth antenna unit in the second frequency band,
  • the second set of transmit channels includes two transmit channels: a third transmit channel using a third antenna element and a fourth transmit channel using a fourth antenna element.
  • the second time interval is a time interval formed by the downlink time slots in the FDD HSDPA radio frame on the second frequency band, and the first group of transmission channel configurations configured on the first frequency band in the first time interval in the second time interval Transmitting signals to the second frequency band using the first antenna unit and the second antenna unit, the first group of transmission channels including a first group of transmission channels using the first antenna unit on the first frequency band and a second transmission using the second antenna unit aisle.
  • first set of transmit channels Cooperating in the second frequency band in the form of transmit diversity, or in beamforming, or in multi-stream parallel transmission (MIMO) mode complying with the multi-antenna technical specification of UMTS HSDPA in implementing coordinated transmission; or, first The group transmitting channel and the second group of transmitting channels on the second frequency band cooperate in a second frequency band in a transmit diversity manner, or in a beamforming manner, or in a multi-stream parallel transmission (MIMO) manner
  • the first set of transmit channels and the second set of transmit channels in coordinated transmission comply with the multi-antenna specification of UMTS HSDPA.
  • the specific determination method of the second time interval is as follows:
  • the time slot of the FDD LTE/LTE-A radio frame on the first frequency band and the time slot of the UMTS HSDPA radio frame on the second frequency band maintain a determined delay relationship, specifically, the radio frame on the first frequency band
  • the time difference between the first time slot and the first time slot on the second radio frame is a fixed value, or the error of the time difference is less than a predetermined range.
  • the method of time division multiplexing transmission channel given in this embodiment is suitable for implementing time division multiplexing of a transmission channel in a multi-standard radio (MSR: Multi-Standard Radio) system currently discussed in 3GPP.
  • the first group of transmission channels are transmission channels belonging to the same MSR RRU or transmission channels in the same active antenna array.
  • FIG. 6 shows a method for time division multiplexing transmission channels between adjacent multi-antenna systems in a coverage area deployed at a common site.
  • the multi-antenna system deployed by the co-site is a multi-antenna system that complies with the same wireless technology specification on an adjacent coverage area, and the specific system is one of the following:
  • the first antenna array is used to cover the first geographical area (serving cell)
  • the second antenna array is used to cover the second geographical area (serving cell)
  • the third antenna array is used to cover the third geographical area (serving a first antenna array, a second antenna array and a third antenna array co-site deployment, each antenna array comprising a plurality of independent antenna units; a first geographic area (serving cell), a second geographic area (service)
  • the cell and the third geographic area (serving cell) are cells in which a neighbor relationship exists in the geographical area.
  • the first antenna array is used to cover the frequency of the first geographical area (the serving cell)
  • the second antenna array is used to cover the frequency of the second geographical area (the serving cell)
  • the third antenna array is used to cover the third geographical area (the serving cell) )
  • Frequency which can be the same frequency, or a different frequency.
  • This embodiment provides an example of a method of time division multiplexing a transmission channel between a first antenna array, a second antenna array, and a third antenna array.
  • a method of time division multiplexing transmission channels between different antenna arrays may be:
  • the method for implementing the time division multiplexing transmission channel between the first antenna array, the second antenna array and the third antenna array may be performed as follows:
  • the terminals in the cell covered by the first antenna, the second antenna array, and the third antenna array are classified, and the downlink of the terminal that needs to use the second transmitting channel is required in the area covered by each antenna array.
  • the channels are respectively configured in a first dwell time interval, a second dwell time interval and a third dwell time interval.
  • the first set of transmit channels are polled: used in the first dwell time interval.
  • the antenna unit in the first antenna array transmits a signal, transmits the signal using the antenna unit in the second antenna array on the second dwell time interval, and transmits the signal using the antenna unit in the third antenna array on the third dwell time interval .
  • the method for determining the dwell time of the first set of transmit channels on one antenna array may be: when the time slots of the radio frames on the first antenna array, the second antenna array, and the third antenna array remain determined in time
  • the delay relationship specifically, the time difference between the time slots of the radio frames transmitted on the three antenna arrays is a fixed value, or the error of the time difference is less than a predetermined range.
  • An example of a method for inter-system time division multiplexing transmission channel deployed in a neighboring site in the embodiment of the present invention A method of time division multiplexing transmission channels between systems deployed at adjacent sites.
  • a first system transmitting a signal on a first frequency band is deployed on the first site
  • a second system transmitting a signal on the second frequency band is deployed on the second site
  • an effective bandwidth is present at the first site
  • the first system on the first site is the following system:
  • a system that operates on the first frequency band using an array antenna in accordance with the TDD LTE/LTE-A system specifications.
  • One or two of the following systems are deployed on the second site adjacent to the first site:
  • a system time division multiplexing transmission channel with an off-site deployment may be performed as follows: In the first step, determining the first of the first group of antenna elements used by the TDD of the first group of transmission channels at the first site a second dwell time of the first set of transmit channels on the third set of antenna elements located at the first site in the second frequency band, wherein the first set of transmit channels, the first dwell time, the second dwell time There is no overlap in time over time.
  • the first dwell time is a time interval composed of downlink time slots of the TDD system
  • the second dwell time is a time interval configured in the following time interval:
  • the first set of transmit channels transmit signals on the third set of antenna elements in a polling manner: using the first set of antenna elements on the first site to transmit signals during the first dwell time interval, Transmitting in the second frequency band using the third group of antenna elements on the first site in the second dwell time interval Signal.
  • the first set of transmit channels transmit signals on the third set of antenna elements and the second system on the second site in a transmit diversity manner or in a multi-stream parallel transmission (MIMO) manner.
  • MIMO multi-stream parallel transmission
  • the TDD system terminal scheduling unit on the first site configures the downlink channel according to the first camping time of the predetermined first group of transmitting channels on the first antenna, and uses the first group of transmitting channels to configure the downlink channel, and the transmitting channel Dispatching, by the scheduling unit, the first set of transmit channels to the third set of antenna elements on the first site according to the predetermined second dwell time; or
  • the transmitting channel scheduling unit configures the first group of transmissions according to the first camping time of the first group of transmitting channels determined by the terminal scheduling unit of the TDD system on the first station by the first group of transmitting channels determined on the first antenna.
  • the transmitting channel scheduling unit uses the second dwell time of the first group of transmitting channels according to the system requirements on the second site, and dispatches the first group of transmitting channels to the third group of antennas on the first station.
  • the network side acquires a time interval in which the second system on the second site uses the first group of transmission channels, and uses the time interval of the first group of transmission channels in combination with the TDD system on the first site to determine the first group of transmission channels in three Dwell time on the group antenna unit.
  • An example of a method for scheduling a transmission channel according to an embodiment of the present invention mainly includes:
  • the terminal that receives the signal on the second frequency band is divided into the first type terminal and the second type terminal according to the difference of the antenna unit used when receiving the signal, specifically,
  • the second type of terminals on the second frequency band are the terminals 2, 3, 4, 5, 6, 9, 10 shown in FIG. 7, and the terminals only need to receive or only receive the number of slave antenna units in the second frequency band.
  • a signal transmitted by an antenna unit included in the second group of antenna elements of the second integer (the second integer is 2 in this embodiment);
  • the first type of terminal on the second frequency band is the terminal 1, 7, 8, 12 and the terminal 11 shown in FIG. 7, wherein the terminal 11 only needs to be the third integer from the number of independent antenna elements (the third in this embodiment) a signal transmitted by an antenna unit included in a third group of antenna elements having an integer of 2); terminals 1 , 7, 8, 12 are received in a second frequency band by a second group of antenna elements having a second integer from the number of independent antenna elements The signals transmitted by the included antenna elements, at the same time, the terminals 1, 7, 8, 12 receive signals transmitted from the antenna elements included in the third group of antenna elements on the second frequency band.
  • Step 2 Determine a second time interval used by the first type of terminal.
  • the predetermined time width is taken as two time slots included in the FDD downlink radio frame on the second frequency band, and the time slot is in the first frequency band, and the uplink time slot of the TDD radio frame is included.
  • the downlink channel is configured for the first type of terminal in the second time interval 702.
  • Step 3 Assigning the first set of transmit channels to transmit on the second frequency band using the third set of antenna elements in the second time interval 702.
  • At least one of the terminals 1, 7, 8, 12 measures the channel between the third group of antenna units and the receiving antenna of the terminal for use in When the next second time interval occurs, the first set of transmit channels and the third set of antenna elements are used to transmit signals.
  • the transmit channel frequency and/or bandwidth of the first set of transmit channels 804 can be adjusted between a first parameter configuration state and a second parameter configuration state 804a;
  • a terminal scheduling unit 805 is a functional unit on the network side.
  • a radio resource control unit located in a baseband processing unit (BBU) in a system of time division multiplexed transmission channels may be in an existing MAC layer.
  • the scheduler is implemented by adding the function of classifying and scheduling the downlink channel of the terminal given by the present invention
  • a transmit channel scheduling unit 806, in this embodiment, is a unit that is co-located with the first set of transmit channels or that is co-located.
  • the antenna unit and the first group of transmitting channels form an integrated antenna, on the same day.
  • the first set of transmit channels are time division multiplexed on the antenna elements included in the line array.
  • the terminal scheduling unit 805 is configured to schedule, by classifying the downlink channel of the terminal in the second frequency band and/or the first frequency band, the first type of terminal that needs to receive signals from the first group of antenna units to the second frequency band. The second time interval.
  • the first frequency band and the second frequency band are one of the following frequency band combinations:
  • the first frequency band is the TDD frequency band and the second frequency band is the FDD frequency band;
  • the first frequency band is the TDD frequency band and the second frequency band is the TDD frequency band;
  • the first frequency band is the FDD frequency band and the second frequency band is the FDD frequency band.
  • the transmit channel scheduling unit 806 is configured to assign the first set of transmit channels 804 to the second time interval, and to transmit the signals to the terminal on the downlink channel over the second time interval.
  • the first group of transmit channels 804 are configured to adjust the center frequency of the transmit channel and/or the transmit bandwidth of the transmit channel according to the control of the transmit channel scheduling unit 806 to form a second parameter configuration state 804a of the first set of transmit channels, the first set of transmit The channel transmits a signal to the terminal on the second frequency band using the first set of antenna elements 801 in a second parameter configuration state 804a.
  • the baseband processing resources corresponding to the first group of transmission channels are also configured to the second frequency band, thereby achieving the first sharing between the first frequency band and the second frequency band.
  • the group transmit channel also implements sharing of baseband processing resources between the first frequency band and the second frequency band.
  • a system for time division multiplexing transmission channels between different antenna units mainly includes:
  • the transmit channel frequency and/or bandwidth of the first set of transmit channels 804 can be adjusted between the first parameter configuration state and the second parameter configuration state 804b, or between the first parameter configuration state and the third parameter configuration state 804c;
  • a terminal scheduling unit 805 is a functional unit on the network side.
  • a radio resource control unit located in a baseband processing unit (BBU) in a system for time division multiplexing transmission channels between antenna units may be existing.
  • the MAC layer scheduler is implemented by adding the function of classifying and scheduling the downlink channel of the terminal given by the present invention;
  • a transmit channel scheduling unit 806, in this embodiment, is a unit that is co-located with the first set of transmit channels or is co-located, typically located within a remote radio unit (RRU) module.
  • RRU remote radio unit
  • the first group of antenna units and the third group of antenna units are co-site mounted.
  • a first set of transmit channels is time-multiplexed with a first set of antenna elements belonging to the first antenna array and a third set of antenna elements belonging to the second antenna array, the first antenna array and the second antenna array being used for different serving cells.
  • the terminal scheduling unit 805 is configured to perform categorization scheduling on the downlink channels of the terminals served by the third group of antenna units and/or the first group of antenna units on the first frequency band or the second frequency band, and is required to be from the third group of antenna units.
  • the first type of terminal receiving the signal is scheduled to a second time interval on the first frequency band or the second frequency band.
  • the transmit channel scheduling unit 806 is configured to assign the first set of transmit channels 804 to the second time interval, and the first set of transmit channels 804 are configured on the first frequency band or the second frequency band using the third set of antenna elements to the downlink channel.
  • the terminal transmits signals on the two time intervals.
  • the first set of transmit channels 804 are configured to adjust the transmit frequency of the transmit channel and the transmit bandwidth of the transmit channel according to the control of the transmit channel scheduling unit 806 to form a third parameter configuration state 804b of the first set of transmit channels, in the first frequency band.
  • the signal is transmitted to the terminal.
  • the first group of transmission channels described in this embodiment is a circuit unit including a radio frequency power amplifier.
  • the size of the transmission bandwidth of the radio frequency channel can be adjusted, and at least one physical output radio frequency power can be transmitted within the transmission bandwidth.
  • the wireless technology specifications supported by the transmit channel on the first frequency band are different from the technical specifications supported on the second frequency band or are the same technical specifications.
  • the baseband processing resources corresponding to the first group of transmission channels are also configured to the second frequency band, thereby achieving the first sharing between the first frequency band and the second frequency band.
  • the group transmission channel also realizes sharing of baseband processing resources between the first frequency band and the second frequency band. Source.
  • the first group of radio frequency channels may be a transmission channel for micro cell coverage or a transmission channel for macro cell coverage.
  • the system using the method of the present invention may include: an antenna unit and a transmission channel on the macro base station; an antenna unit and a transmission channel on the micro base station, and an antenna unit and a transmission channel on the repeater.
  • the method of time division multiplexing transmission channels between different frequency bands or between different antenna units according to the present invention can directly derive time division multiplexing between different frequency bands or between different antenna units on a wireless access point.
  • the method of receiving a channel in view of such a derivation relationship, also considers that the receiving channel is easy to realize a large receiving channel bandwidth (far larger than the bandwidth of the transmitting channel), and the cost of the receiving channel is significantly lower than the transmitting channel, therefore, the present invention does not discuss the network
  • the road side implements a specific method of time division multiplexing of the receiving channel.
  • the embodiments of the present invention can achieve flexible configuration between different technical specifications, significantly reduce the basic configuration of the system for the number of radio frequency channels, and significantly reduce the cost of the construction network.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé pour un multiplexage par répartition dans le temps d'un canal d'émission. Au cours d'un premier intervalle de temps, un premier ensemble de canaux d'émission est utilisé sur une première bande de fréquences dans le but d'émettre un signal au moyen d'une première bande passante d'émission à destination d'une première zone géographique via un premier ensemble d'unités d'antennes ; au cours d'un deuxième intervalle de temps, consécutif au premier intervalle de temps, le premier ensemble de canaux d'émission est utilisé sur une seconde bande de fréquences ; ou bien le premier ensemble de canaux d'émission est utilisé sur un troisième ensemble d'unités d'antennes afin d'émettre le signal. L'invention est caractérisée en ce que, au cours du premier intervalle de temps, la première bande passante d'émission est inférieure ou égale à la largeur de la première bande de fréquences, et la seconde bande de fréquences est une bande de fréquences différente de la première bande de fréquences. La présente invention se rapporte d'autre part à un système correspondant conçu pour un multiplexage du canal d'émission. La solution technique de la présente invention rend possible une configuration flexible entre différents procédés techniques. Elle réduit de façon significative la configuration de base du nombre de canaux d'émission pour le système, et elle réduit aussi de façon significative les coûts associés à la construction du réseau.
PCT/CN2012/077614 2011-08-03 2012-06-27 Procédé et système pour un multiplexage par répartition dans le temps d'un canal d'émission WO2013016990A1 (fr)

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