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WO2015066847A1 - Procédé et appareil de détermination d'antenne de réception - Google Patents

Procédé et appareil de détermination d'antenne de réception Download PDF

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Publication number
WO2015066847A1
WO2015066847A1 PCT/CN2013/086582 CN2013086582W WO2015066847A1 WO 2015066847 A1 WO2015066847 A1 WO 2015066847A1 CN 2013086582 W CN2013086582 W CN 2013086582W WO 2015066847 A1 WO2015066847 A1 WO 2015066847A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
user equipment
antenna
random access
received
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/086582
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English (en)
Chinese (zh)
Inventor
杨映红
王成毅
王宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2013/086582 priority Critical patent/WO2015066847A1/fr
Priority to CN201380002580.1A priority patent/CN103797886A/zh
Publication of WO2015066847A1 publication Critical patent/WO2015066847A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and apparatus for determining a receiving antenna.
  • the idle mode (IDLE Mode) of the user equipment is an important state of the user equipment.
  • RRC radio resource control connection
  • the base station controller or the base station needs to wait for the downlink measurement of the user equipment or the uplink measurement of the base station to identify the uplink of the user equipment.
  • the user equipment in the idle state performs the downlink measurement, and selects the cell with the strong downlink signal to camp. After the camping cell initiates the link establishment request, and the connection is established, the uplink receiving antenna of the user equipment is activated by the user equipment.
  • the cell determines, and the user equipment activation set cell is determined according to the downlink measurement result performed by the user equipment.
  • the user equipment is required to periodically transmit a channel sounding reference signal (SRS), and the base station that receives the channel sounding reference signal will
  • SRS channel sounding reference signal
  • CQI channel quality indicator
  • the user equipment sends an additional channel sounding reference signal, and the base station controller or the base station can determine the uplink receiving antenna of the user equipment, and the user equipment consumes additional power; in the following scenarios, for example, the macro is slightly different. Construct a network networking scenario, where the upper and lower propagation models are not reciprocal, and the uplink load imbalance between cells In the case of the same user equipment, the uplink and the downlink are unbalanced, and the downlink quality cannot accurately determine the uplink receiving target antenna, causing strong uplink interference.
  • Embodiments of the present invention provide a method and apparatus for determining a receiving antenna, which solves the problem that a user equipment needs to wait for subsequent downlink or uplink measurement when the user equipment transits from a non-dedicated connection state to a connected state, and the base station or the base station controller can identify the user equipment.
  • the problem of the uplink joint receiving antenna and the user equipment need to send an additional channel sounding reference signal to the established C oMP base station, and the base station or the base station controller can determine the uplink receiving antenna problem, can enhance the uplink receiving reliability of the user equipment, and reduce the system's interference.
  • an embodiment of the present invention provides a method for determining a receiving antenna, including: detecting, by a user equipment received on an antenna of a second cell, a random access preamble signal sent by a user equipment on a random access channel of a first cell. Signal quality, the second cell is a neighboring cell of the first cell;
  • the method further includes:
  • the acknowledgement message is via an antenna of the first cell and/or the The antenna of the second cell is transmitted.
  • the receiving, by the antenna of the first cell, the wireless signal sent by the user equipment and the user equipment received by an antenna of the second cell The transmitted wireless signal is subjected to joint receiving processing, and specifically includes:
  • the wireless signal sent by the device is combined and demodulated with the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the wireless signal sent by the user equipment includes a wireless signal that is sent by the user equipment during a random access process, And/or after the random access procedure ends, the user equipment transitions to a dedicated connection state, a wireless signal transmitted on the dedicated uplink channel.
  • the signal quality of the random access preamble signal includes a chip energy intensity, a symbol At least one of an energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • an embodiment of the present invention provides a base station, including:
  • a detecting unit configured to detect a signal quality of a random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell, where the second cell is the first cell Neighboring cell
  • a determining unit configured to determine, if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining that an uplink receiving antenna of the user equipment includes an antenna of the second cell;
  • the processing unit is configured to perform a joint receiving process on the wireless signal sent by the user equipment received by the antenna of the first cell and the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the base station includes a sending unit;
  • the sending unit is configured to: after the determining unit determines that the uplink receiving antenna of the user equipment includes the antenna of the second cell, send, by the processing unit, the wireless device that is sent by the user equipment of the antenna of the first cell Before the signal is combined with the wireless signal sent by the user equipment received by the antenna of the second cell, the acknowledgment message is sent to the user equipment, where the acknowledgment message is used to indicate that the random access preamble signal has been Was successfully detected.
  • the acknowledgment message is sent via an antenna of the first cell and/or an antenna of the second cell.
  • the base station further includes a receiving unit
  • the receiving unit is configured to: after the sending unit sends an acknowledgment message to the user equipment, receive, by using an antenna of the first cell, a wireless signal sent by the user equipment, and used by the sending unit to send After the user equipment sends the acknowledgement message, the wireless signal sent by the user equipment is received by the antenna of the second cell.
  • the wireless signal sent by the user equipment includes a wireless signal that is sent by the user equipment during a random access process, and/or Or after the random access procedure ends, the user equipment transfers to a dedicated connection state, a wireless signal transmitted on the dedicated uplink channel.
  • the random The signal quality of the access preamble signal includes at least one of a chip energy intensity, a symbol energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • an embodiment of the present invention further provides a base station, including:
  • a processor configured to detect a signal quality of a random access preamble signal sent by a user equipment received on an antenna of the second cell on a random access channel of the first cell, where Determining, by the second cell, a neighboring cell of the first cell, and determining, if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining the user equipment
  • the uplink receiving antenna includes an antenna of the second cell, and the user equipment that is also used to receive the wireless signal sent by the user equipment of the antenna of the first cell and the antenna of the second cell
  • the transmitted wireless signal is subjected to joint reception processing.
  • the base station includes a transmitter, where the transmitter is configured to determine, at the processor, that an uplink receiving antenna of the user equipment includes an antenna of the second cell. After the wireless signal sent by the user equipment received by the antenna of the first cell and the wireless signal sent by the user equipment received by the antenna of the second cell are jointly received, the user is sent to the user.
  • the device sends an acknowledgement message, where the acknowledgement message is used to indicate that the random access preamble signal of the user equipment has been successfully detected.
  • the acknowledgment message is sent via an antenna of the first cell and/or an antenna of the second cell.
  • the base station further includes a receiver
  • the receiver configured to receive, by using an antenna of the first cell, a wireless signal sent by the user equipment, after the transmitter sends an acknowledgement message to the user equipment, After the user equipment sends the acknowledgement message, the wireless signal sent by the user equipment is received by the antenna of the second cell.
  • the wireless signal sent by the user equipment includes a wireless signal that is sent by the user equipment during a random access process, And/or after the random access procedure ends, the user equipment transitions to a dedicated connection state, a wireless signal transmitted on the dedicated uplink channel.
  • the signal quality of the random access preamble signal includes at least one of a chip energy intensity, a symbol energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • a method and apparatus for determining a receiving antenna for detecting a signal quality of a random access preamble signal transmitted by a user equipment received from an antenna of a second cell on a random access channel of a first cell
  • the second cell is a neighboring cell of the first cell, and then, if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining that the uplink receiving antenna of the user equipment includes the second cell
  • the wireless signal sent by the user equipment received by the antenna of the first cell is jointly received and received by the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the user equipment when the user equipment transits from the non-dedicated connection state to the connected state, the user equipment does not need to wait for subsequent downlink or uplink measurement, and the user equipment does not need to consume additional power to transmit the channel sounding reference signal, and the base station can accurately identify the user equipment.
  • the uplink joint receiving antenna enables the user equipment to obtain uplink joint reception when initially entering the connected state, which enhances the uplink receiving reliability of the user equipment and also reduces system interference.
  • FIG. 1 is a schematic flowchart 1 of a method for determining a receiving antenna according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart 2 of a method for determining a receiving antenna according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram 1 of a base station according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram 2 of a base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram 3 of a base station according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram 4 of a base station according to an embodiment of the present invention.
  • GSM global mobile communication systems
  • CDMA code division multiple access
  • TDMA time division multiple access
  • WCDMA wideband code division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal OFDMA
  • SC-FDMA single carrier FDMA
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE long term evolution
  • the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (e.g., RAN, radio access network), which can be a mobile terminal, such as a mobile telephone (or "cellular" telephone) and having a mobile terminal
  • RAN radio access network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, Remote terminal Terminal ) , an access terminal , a user terminal , a user agent , a user device , or a user equipment .
  • the idle mode is an important state of the user equipment.
  • RRC radio resource control connection
  • the network does not know the location of the cell where the user equipment is located.
  • RRC radio resource control connection
  • the user equipment When the user equipment is powered on or roaming, its primary task is to find the network and get in touch with the network.
  • the signal strength algorithm is used to determine the camping cell.
  • the user equipment In the idle mode, the user equipment continuously measures the broadcast control channel of the camped cell and the neighboring cell to select a suitable cell for login.
  • the common channel state is another important state of the user equipment.
  • the RRC connection is established between the user equipment and the network, and the user equipment is assigned a dedicated physical channel (DPCH).
  • DPCH dedicated physical channel
  • the user equipment may also be divided into physical uplink shared channels (PUSCH) and/or physical downlink shared channels (PDSCH), and the user equipment sends data to the network on the associated shared channel.
  • PUSCH physical uplink shared channels
  • PDSCH physical downlink shared channels
  • Random access is one of the most basic functions of a cellular system, which makes it possible to establish a connection between the terminal and the network.
  • the user equipment can be scheduled by the system for uplink transmission only after the random access procedure is synchronized with the uplink of the system.
  • the random access procedure is a channel application process. When a user equipment in idle mode or in a common channel state needs to establish a communication connection with the network, the user equipment sends a message to the network on the random access channel.
  • CoMP (coordinating multiple points), communication terminology, one of the important technologies of LTE-A (long term evolution-advanced).
  • CoMP transmission refers to a plurality of transmission points separated geographically, cooperatively participating in data transmission (PDSCH) of one terminal or jointly receiving data (PUSCH) transmitted by one terminal, and multiple transmission points participating in cooperation generally refer to base stations of different cells.
  • the CoMP technology places the edge user equipment on the same frequency of several base stations, and several base stations simultaneously serve the user equipment to improve the coverage performance of the edge users.
  • CoCoMP can reduce the cell Inter-interference mainly improves the spectrum efficiency of users at the edge of the cell.
  • An embodiment of the present invention provides a method for determining a receiving antenna. As shown in FIG. 1, the method includes:
  • the base station detects a signal quality of a random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell.
  • the second cell is a neighboring cell of the first cell, and the first cell may be a camping cell of the idle mode user equipment, or may be a serving cell of the common channel state user equipment.
  • Random access is a basic function. After the user equipment successfully applies for the transmission permission of the uplink random access channel through the random access procedure, the uplink transmission can be performed.
  • the base station detects that the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell needs to consume the baseband resource of the base station, and at the same time, to ensure that the user equipment is in the first
  • the random access preamble signal transmitted on the random access channel of a cell is uplink-synchronized in the first cell and the second cell, that is, the antenna of the second cell can be received by the user equipment to be sent on the random access channel of the first cell.
  • the random access preamble, the base station needs to configure its own resources.
  • the base station configures information such as a scrambling code and a frequency point to ensure that the antenna of the second cell receives the random access preamble signal sent by the user equipment on the random access channel of the first cell.
  • the initial random access procedure includes the sending of the random access preamble, and the user equipment in the idle state first sends a random access preamble on the random access channel of the camping cell, or is in a common channel state.
  • the user equipment sends a random access preamble signal on the uplink random access channel of the serving cell, and the random access preamble signal is detected by the antenna of the neighboring cell of the camping cell or the serving cell.
  • the base station detects that the random access preamble is received on the antenna of the second cell.
  • the signal quality of the number including at least one of chip energy intensity, symbol energy intensity, symbol signal to interference ratio, and chip signal to interference ratio.
  • the antenna of the first cell is different from the antenna of the second cell, and the base station to which the first cell belongs may be the same as the base station to which the second cell belongs, or may be different. Not limited.
  • the steps of the embodiment of the present invention are the same base station to which the first cell and the second cell belong, if the base station to which the first cell belongs
  • the steps of the steps in the embodiment of the present invention are the master control base station
  • the master control base station is a base station capable of detecting the signals received by the antennas of the respective cells and determining the uplink receiving antenna of the user equipment.
  • the base station of the second cell After detecting, by the antenna of the second cell, the random access preamble signal sent by the user equipment on the random access channel of the first cell, the base station of the second cell that successfully receives the random access preamble signal is used as the user equipment.
  • One of the uplink receiving antennas One of the uplink receiving antennas.
  • the base station records the neighbor cell set capable of receiving the random access preamble signal sent by the user equipment on the first cell random access channel, and then determines, in the cell set, the signal quality of the received random access preamble signal exceeds the gate.
  • the neighboring cell of the limit that is, the second cell that successfully receives the random access preamble signal, and the antenna of the second cell of the received random access preamble signal whose signal quality exceeds the threshold is used as the uplink of the user equipment.
  • the first cell may be a camping cell of an idle state user equipment, or may be a serving cell of a public channel state user equipment.
  • the number of antennas of the second cell that receives the signal quality of the random access preamble exceeding the threshold is at least one, and the number is not limited in the present invention.
  • the serving cell of the mobile phone has three neighboring cells: A, B, and C.
  • the mobile phone transmits a random access preamble signal on the random access channel of the serving cell, and the antenna of the three neighboring cells.
  • the base station determines that the uplink receiving antenna of the mobile phone includes the antenna of the cell A and Antenna of cell B.
  • S1 03 The base station performs joint reception processing on the wireless signal sent by the user equipment received by the antenna of the first cell and the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the first cell may be a camping cell of an idle state user equipment, or may be a serving cell of a public channel state user equipment.
  • the joint receiving technology refers to that a signal transmitted by the same transmitting source is received on multiple antennas. In the process of demodulating and decoding the received signal, multiple antenna signals are combined, and the correct decoding result of the signal sent by the transmitting end is obtained. . Compared with single-antenna reception, the joint reception obtains the uplink receive diversity gain.
  • the typical multi-antenna joint reception technique such as multi-antenna signal RAKE (multipath diversity reception technology), LLR (log-li ke li hood ratio, log likelihood) Ratio) stream merge, or decoding result selective merge, etc.
  • the base station determines that the uplink receiving antenna of the user equipment includes the antenna of the second cell
  • the antenna of the first cell where the user equipment is located and the antenna of the second cell are used as the uplink joint receiving antenna set of the user equipment.
  • the base station receives the wireless signal sent by the user equipment by using the antenna of the first cell where the user equipment is located, and simultaneously receives the wireless signal sent by the user equipment by using the antenna of the second cell, and then receives the user equipment of the antenna of the first cell.
  • the transmitted wireless signal and the wireless signal transmitted by the user equipment received by the antenna of the second cell are demodulated and decoded, which reduces system interference and reduces power loss.
  • An embodiment of the present invention provides a method for determining a receiving antenna, where a base station detects a signal quality of a random access preamble signal sent by a user equipment received on an antenna of a second cell on a random access channel of a first cell, where The second cell is a neighboring cell of the first cell, and then, if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell Finally, the wireless signal sent by the user equipment received by the antenna of the first cell is combined with the wireless signal sent by the user equipment received by the antenna of the second cell. Receive processing.
  • the user equipment when the user equipment transits from the non-dedicated connection state to the connected state, the user equipment does not need to wait for subsequent downlink or uplink measurement, and the user equipment does not need to consume additional power to transmit the channel sounding reference signal, and the base station can accurately identify the user equipment.
  • the uplink joint receiving antenna enables the user equipment to obtain uplink joint reception when initially entering the connected state, which enhances the uplink receiving reliability of the user equipment and also reduces system interference.
  • An embodiment of the present invention provides a method for determining a receiving antenna. As shown in FIG. 2, the method includes:
  • the S 2 0 K user equipment transmits a preamble signal on the random access channel of the first cell.
  • the first cell may be a camping cell of an idle state user equipment, or may be a serving cell of a public channel state user equipment.
  • Random access is a basic function. After the user equipment synchronizes with the uplink of the system through the random access process, it can be scheduled by the system for uplink transmission.
  • Random access is one of the most basic functions of a cellular system, which makes it possible to establish a connection between the terminal and the network.
  • the user equipment can be scheduled by the system for uplink transmission only after the random access procedure is synchronized with the uplink of the system.
  • the random access procedure is a channel application process. When a user equipment in an idle mode or a common channel state needs to establish a communication connection with the network, the user equipment sends a message to the network on the random access channel.
  • a random access procedure is initiated.
  • the user equipment transmits a random access preamble on the random access channel of its camping cell, or the user equipment in the common channel state transmits a random access preamble on the uplink random access channel of its serving cell.
  • the antenna of the first cell and the second cell in the embodiment of the present invention are different, and the base station to which the first cell belongs may be the same as the base station to which the second cell belongs, or may be different, which is not limited by the embodiment of the present invention.
  • the steps of the embodiment of the present invention are the same base station to which the first cell and the second cell belong, if the base station to which the first cell belongs
  • the steps of the steps in the embodiment of the present invention are the master control base station
  • the master control base station is a base station capable of detecting the received signal on the antenna of each cell and determining the uplink receiving antenna of the user equipment.
  • the base station detects a signal quality of the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell.
  • the second cell is a neighboring cell of the first cell.
  • Random access is a basic function. After the user equipment successfully applies for the transmission permission of the uplink random access channel through the random access procedure, the uplink transmission can be performed.
  • the base station detects that the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell needs to consume the baseband resource of the base station, and at the same time, to ensure that the user equipment is in the first
  • the random access preamble signal transmitted on the random access channel of a cell is uplink-synchronized in the first cell and the second cell, that is, the antenna of the second cell can be received by the user equipment to be sent on the random access channel of the first cell.
  • the random access preamble, the base station needs to configure its own resources.
  • the base station configures information such as a scrambling code and a frequency point to ensure that the antenna of the second cell receives the random access preamble signal sent by the user equipment on the random access channel of the first cell.
  • the initial random access procedure includes the sending of the random access preamble, and the user equipment in the idle state first sends a random access preamble on the random access channel of the camping cell, or is in a common channel state.
  • the user equipment sends a random access preamble signal on the uplink random access channel of the serving cell, and the random access preamble The number is detected by the antenna of the neighboring cell of the camped cell or the serving cell.
  • the base station detects a signal quality of the random access preamble signal received on the antenna of the second cell, where the signal quality includes at least one of a chip energy intensity, a symbol energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • S2 03 If the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, the base station determines that the uplink receiving antenna of the user equipment includes the antenna of the second cell.
  • the signal quality of the random access preamble signal includes at least one of a chip energy intensity, a symbol energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • the base station of the second cell After detecting, by the antenna of the second cell, the random access preamble signal sent by the user equipment on the random access channel of the first cell, the base station of the second cell that successfully receives the random access preamble signal is used as the user equipment.
  • One of the uplink receiving antennas One of the uplink receiving antennas.
  • the base station records the neighbor cell set capable of receiving the random access preamble signal sent by the user equipment on the first cell random access channel, and then determines, in the cell set, the signal quality of the received random access preamble signal exceeds the gate.
  • the neighboring cell of the limit that is, the second cell that successfully receives the random access preamble signal, and the antenna of the second cell of the received random access preamble signal whose signal quality exceeds the threshold is used as the uplink of the user equipment.
  • the first cell may be a camping cell of an idle state user equipment, or may be a serving cell of a public channel state user equipment.
  • the number of antennas of the second cell that receives the signal quality of the random access preamble exceeding the threshold is at least one, and the number is not limited in the present invention.
  • the serving cell of the mobile phone has three neighboring cells: A, B, and C.
  • the mobile phone transmits a random access preamble signal on a random access channel of its serving cell, and the antennas of the three neighboring cells receive the random access preamble signal.
  • the base station determines that the uplink receiving antenna of the mobile phone includes the antenna of the cell A and the antenna of the cell B, where the quality of the random access preamble received by the antenna of the cell A and the antenna of the cell B exceeds a preset threshold.
  • the base station sends an acknowledgement message to the user equipment by using the downlink channel of the first cell.
  • the acknowledgement message is used to indicate that the user equipment random access preamble signal has been successfully detected.
  • the acknowledgment message is sent via the antenna of the first cell or the antenna of the second cell through the downlink channel of the first cell.
  • the base station determines that the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold value, that is, after determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell, sending an acknowledgement message to the user equipment, indicating the user The device random access preamble signal has been successfully detected.
  • the base station determines that the uplink receiving antenna of the user equipment includes the antenna of the second cell, and sends an acknowledgement message to the user equipment by using the downlink channel of the first cell where the user equipment is located, so that the user equipment learns the random access sent by the user equipment.
  • the preamble signal has been successfully detected, and then the corresponding next operation is performed, and the acknowledgment message is transmitted via the antenna of the first cell or the antenna of the second cell.
  • the eNB when the eNB sends an acknowledgment message, it is not necessary to determine whether the quality of the random access preamble received by the antenna of the first cell of the user equipment exceeds a preset threshold, and the base station determines the randomness received by the second cell antenna. After the signal quality of the access preamble exceeds the preset threshold, the acknowledgment message is sent to the user equipment.
  • the base station receives the wireless signal sent by the user equipment by using the antenna of the first cell.
  • the wireless signal sent by the user equipment is a wireless signal sent by the user equipment after receiving the acknowledgement message.
  • the wireless signal transmitted by the user equipment includes a wireless signal transmitted by the user equipment during the random access procedure and/or a wireless signal transmitted by the user equipment to the dedicated connection state after the random access procedure ends.
  • the base station After determining the uplink receiving antenna of the user equipment, the base station receives the wireless signal sent after the user equipment.
  • the wireless signal sent by the user equipment during the random access process and/or the user equipment is transferred to the dedicated connection state after the random access procedure ends, and the wireless signal sent on the dedicated uplink channel is occupied by the user equipment.
  • the antenna of a cell is received.
  • the first cell is a camping cell of an idle state user equipment, and may also be dedicated.
  • Channel State The serving cell of the user equipment.
  • the base station receives the wireless signal sent by the user equipment by using the antenna of the second cell.
  • the wireless signal sent by the user equipment is a wireless signal sent by the user equipment after receiving the acknowledgement message.
  • the wireless signal transmitted by the user equipment includes a wireless signal transmitted by the user equipment during the random access procedure and/or a wireless signal transmitted by the user equipment to the dedicated connection state after the random access procedure ends.
  • the wireless signal transmitted by the user equipment can be received by the neighboring cell antenna.
  • the wireless signal sent by the user equipment in the random access process and/or the user equipment is transferred to the dedicated connection state after the random access procedure ends, and the wireless signal sent on the dedicated uplink channel is used by the antenna of the second cell. receive.
  • the first cell is a camping cell of an idle state user equipment, and may also be a serving cell of a common channel state user equipment.
  • the base station demodulates the wireless signal sent by the user equipment received by the antenna of the first cell and the wireless signal sent by the user equipment received by the antenna of the second cell, and sends the user equipment received by the antenna of the first cell.
  • the wireless signal is combined with the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the combining process includes multi-antenna signal multipath diversity receiving technology RAKE combining, log likelihood ratio LLR stream combining or decoding result selective combining.
  • the base station After determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell, the base station uses the antenna of the first cell where the user equipment is located and the antenna of the second cell as the uplink joint receiving antenna set of the user equipment.
  • the base station receives the wireless signal sent by the user equipment by using the antenna of the first cell where the user equipment is located, and simultaneously receives the wireless signal sent by the user equipment by using the antenna of the second cell, and then demodulates the user received by the antenna of the first cell.
  • the wireless signal sent by the device and the wireless signal sent by the user equipment received by the antenna of the second cell, and the wireless signal sent by the user equipment received by the antenna of the first cell and the second cell The wireless signals sent by the user equipment received by the line are combined to reduce system interference and reduce power loss.
  • An embodiment of the present invention provides a method for determining a receiving antenna, where a base station detects a signal quality of a random access preamble signal sent by a user equipment received on an antenna of a second cell on a random access channel of a first cell, where The second cell is a neighboring cell of the first cell, and then, if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell Finally, the wireless signal sent by the user equipment received by the antenna of the first cell is jointly received and received by the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the user equipment when the user equipment transits from the non-dedicated connection state to the connected state, the user equipment does not need to wait for subsequent downlink or uplink measurement, and the user equipment does not need to consume additional power to transmit the channel sounding reference signal, and the base station can accurately identify the user equipment.
  • the uplink joint receiving antenna enables the user equipment to obtain uplink joint reception when initially entering the connected state, which enhances the uplink receiving reliability of the user equipment and also reduces system interference.
  • An embodiment of the present invention provides a base station 1, as shown in FIG. 3, including:
  • the detecting unit 10 is configured to detect a signal quality of the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell, where the second cell is the a neighboring cell of a cell;
  • a determining unit 1 1 configured to determine that an uplink receiving antenna of the user equipment includes the second cell, if a signal quality of the random access preamble signal received by an antenna of the second cell exceeds a threshold value Antenna
  • the processing unit 1 2 is configured to perform a joint receiving process on the wireless signal sent by the user equipment received by the antenna of the first cell and the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the base station includes a sending unit 13;
  • the sending unit 13 is configured to: after the determining unit 1 1 determines that the uplink receiving antenna of the user equipment includes the antenna of the second cell, the processing unit 12 Sending a confirmation message to the user equipment before performing a joint reception process on the wireless signal sent by the user equipment received by the antenna of the cell and the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the confirmation message is used to indicate that the random access preamble signal of the user equipment has been successfully detected.
  • acknowledgement message is sent via an antenna of the first cell or an antenna of the second cell.
  • the base station further includes a receiving unit 1 4;
  • the receiving unit 14 is configured to: after the sending unit 13 sends an acknowledgement message to the user equipment, receive, by using an antenna of the first cell, a wireless signal sent by the user equipment, and After transmitting the acknowledgement message to the user equipment, the sending unit 13 receives the wireless signal sent by the user equipment by using the antenna of the second cell.
  • the wireless signal sent by the user equipment includes a wireless signal sent by the user equipment during a random access procedure, and/or after the random access procedure ends, the user equipment transits to a dedicated connection state, where A wireless signal transmitted on a dedicated upstream channel.
  • the signal quality of the random access preamble signal includes at least one of a chip energy intensity, a symbol energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • a base station provided by an embodiment of the present invention mainly includes a detecting unit, a determining unit, and a processing unit.
  • the base station detects the signal quality of the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell, where the second cell is a neighboring cell of the first cell, and then If the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell, and finally, the user that receives the antenna of the first cell
  • the wireless signal sent by the device is combined with the wireless signal sent by the user equipment received by the antenna of the second cell.
  • an embodiment of the present invention provides a base station 2, including:
  • the processor 20 is configured to detect a signal quality of the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell, where the second cell is the a neighboring cell of a cell, and if a signal quality of the random access preamble signal received by an antenna of the second cell exceeds a threshold, determining that the uplink receiving antenna of the user equipment includes the An antenna of the second cell, and a wireless signal sent by the user equipment received by the antenna of the first cell, and a wireless signal sent by the user equipment received by an antenna of the second cell. Receive processing.
  • the base station includes a transmitter 2 1 ;
  • the transmitter 2 1 is configured to: after the processor 20 determines that the uplink receiving antenna of the user equipment includes an antenna of the second cell, receive the user equipment of the antenna of the first cell Sending an acknowledgment message to the user equipment, where the acknowledgment message is used to indicate the user equipment, before performing the joint receiving process with the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the random access preamble signal has been successfully detected.
  • acknowledgement message is sent via an antenna of the first cell or an antenna of the second cell.
  • the base station further includes a receiver 22;
  • the receiver 22 is configured to: after the transmitter 2 1 sends an acknowledgement message to the user equipment, receive, by using an antenna of the first cell, a wireless signal sent by the user equipment, and After transmitting the acknowledgement message to the user equipment, the transmitter 2 1 receives the wireless signal sent by the user equipment by using the antenna of the second cell.
  • the wireless signal sent by the user equipment includes the user equipment being The wireless signal transmitted during the random access procedure and/or the wireless signal transmitted by the user equipment to the dedicated connection state after the random access procedure ends.
  • the signal quality of the random access preamble signal includes at least one of a chip energy intensity, a symbol energy intensity, a symbol signal to interference ratio, and a chip signal to interference ratio.
  • a base station provided by an embodiment of the present invention mainly includes a processor.
  • the base station detects the signal quality of the random access preamble signal sent by the user equipment received on the antenna of the second cell on the random access channel of the first cell, where the second cell is a neighboring cell of the first cell, and then If the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold, determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell, and finally, the user that receives the antenna of the first cell
  • the wireless signal sent by the device is combined with the wireless signal sent by the user equipment received by the antenna of the second cell.
  • the user equipment when the user equipment transits from the non-dedicated connection state to the connected state, the user equipment does not need to wait for subsequent downlink or uplink measurement, and the user equipment does not need to consume additional power to transmit the channel sounding reference signal, and the base station can accurately identify the user equipment.
  • the uplink joint receiving antenna enables the user equipment to obtain uplink joint reception when initially entering the connected state, which enhances the uplink receiving reliability of the user equipment and also reduces system interference.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, Or not.

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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 concerne un procédé et un appareil de détermination d'une antenne de réception, se rapporte au domaine des communications sans fil, et permet d'améliorer la fiabilité d'une réception en liaison montante d'un équipement d'utilisateur de même que de réduire les interférences de système. Le procédé consiste à : détecter une qualité de signal d'un signal de préambule d'accès aléatoire qui est envoyé par un équipement d'utilisateur sur un canal d'accès aléatoire d'une première cellule et qui est reçu sur une antenne d'une seconde cellule, la seconde cellule étant une cellule voisine de la première cellule ; dans la mesure où la qualité de signal du signal de préambule d'accès aléatoire reçu par l'antenne de la seconde cellule est supérieure à un seuil, déterminer qu'une antenne de réception en liaison montante de l'équipement d'utilisateur comprend une antenne de la seconde cellule ; et recevoir et traiter conjointement un signal radioélectrique envoyé par l'équipement d'utilisateur et reçu par une antenne de la première cellule et un signal radioélectrique envoyé par l'équipement d'utilisateur et reçu par l'antenne de la seconde cellule.
PCT/CN2013/086582 2013-11-06 2013-11-06 Procédé et appareil de détermination d'antenne de réception Ceased WO2015066847A1 (fr)

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PCT/CN2013/086582 WO2015066847A1 (fr) 2013-11-06 2013-11-06 Procédé et appareil de détermination d'antenne de réception
CN201380002580.1A CN103797886A (zh) 2013-11-06 2013-11-06 一种确定接收天线的方法及装置

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PCT/CN2013/086582 WO2015066847A1 (fr) 2013-11-06 2013-11-06 Procédé et appareil de détermination d'antenne de réception

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US20210368553A1 (en) * 2018-10-18 2021-11-25 Nokia Technologies Oy Method and network node for determining candidate set
CN110463264B (zh) * 2019-06-17 2021-10-08 北京小米移动软件有限公司 随机接入指示方法、装置及存储介质

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