WO2015066847A1

WO2015066847A1 - Method and apparatus for determining reception antenna

Info

Publication number: WO2015066847A1
Application number: PCT/CN2013/086582
Authority: WO
Inventors: 杨映红; 王成毅; 王宁
Original assignee: 华为技术有限公司
Priority date: 2013-11-06
Filing date: 2013-11-06
Publication date: 2015-05-14
Also published as: CN103797886A

Abstract

The present invention provides a method and an apparatus for determining a reception antenna, relates to the field of wireless communications, and can enhance the reliability of uplink reception of a user equipment and reduce system interference. The method comprises: detecting signal quality of a random access preamble signal that is sent by a user equipment on a random access channel of a first cell and is received on an antenna of a second cell, the second cell being a neighboring cell of the first cell; if the signal quality of the random access preamble signal received by the antenna of the second cell is higher a threshold, determining that an uplink reception antenna of the user equipment comprises an antenna of the second cell; and jointly receiving and processing a radio signal sent by the user equipment and received by an antenna of the first cell and a radio signal sent by the user equipment and received by the antenna of the second cell.

Description

Method and device for determining receiving antenna

Technical field

The present invention relates to the field of wireless communications, and in particular, to a method and apparatus for determining a receiving antenna.

Background technique

The idle mode (IDLE Mode) of the user equipment is an important state of the user equipment. In the idle mode, there is no radio resource control connection (RRC) between the user equipment and the network, and the network does not know the cell location of the user equipment. . When the user device is powered on or roaming, its primary task is to find the network and get in touch with the network.

When the user equipment accesses the system in the IDLE state, it always tries to stay on the cell where both the uplink and downlink can communicate successfully. In the prior art, when the user equipment moves from the non-dedicated connection state (idle state or common channel state) to the dedicated connection state, 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. Combined receiving antenna. For 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. For the network side, in the coordinated multi-point (CoMP) transmission technology, 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 The channel quality indicator (CQI) of the signal is compared with a threshold. If the radio channel quality of the SRS received by the base station is greater than the threshold, the base station controller or the base station uses the antenna of the base station as the uplink receiving antenna of the user equipment. One.

However, in the prior art, 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.

Summary of the invention

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.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, 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;

Determining, 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;

And performing 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.

In a first possible implementation manner of the first aspect, after determining that the uplink receiving antenna of the user equipment includes an antenna of the second cell, the user that receives the antenna of the first cell Before the wireless signal sent by the device and the wireless signal sent by the user equipment received by the antenna of the second cell are jointly received, the method further includes:

And sending an acknowledgement message to the user equipment, where the acknowledgement message is used to indicate that the random access preamble signal has been successfully detected.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the acknowledgement message is via an antenna of the first cell and/or the The antenna of the second cell is transmitted.

In a third possible implementation manner of the first aspect, 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:

Receiving, by the antenna of the first cell, a wireless signal sent by the user equipment; receiving, by using an antenna of the second cell, a wireless signal sent by the user equipment; and receiving, by the antenna of the first cell, the user 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.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the foregoing aspect, 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.

With reference to the foregoing first aspect, or any one of the first possible implementation manner to the fourth possible implementation manner of the foregoing aspect, 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.

In a second aspect, 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. In a first possible implementation manner of the second aspect, 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.

In conjunction with the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the acknowledgment message is sent via an antenna of the first cell and/or an antenna of the second cell.

In a third possible implementation manner of the second aspect, 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.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, 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.

With reference to the foregoing second aspect, or any one of the first possible implementation to the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, 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.

In a third aspect, 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.

In a first possible implementation manner of the third aspect, 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.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation of the third aspect, the acknowledgment message is sent via an antenna of the first cell and/or an antenna of the second cell.

In a third possible implementation manner of the third aspect, 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.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, 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.

In combination with the foregoing third aspect or any one of the first possible implementation to the fourth possible implementation of the third aspect, the fifth possibility in the third aspect In an implementation manner, 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 according to an embodiment of the present invention, 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 And 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. With this solution, 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.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

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;

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.

FIG. 6 is a schematic structural diagram 4 of a base station according to an embodiment of the present invention.

detailed description

The technology in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. The present invention is described in a clear and complete manner, and it is obvious that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The various techniques described herein can be used in various communication systems based on random access preamble to compete for access resources, such as global mobile communication systems (GSM), code division multiple access (CDMA, code division) Multiple access system, time division multiple access (TDMA) system, wideband code division multiple access (WCDMA), frequency division multiple access (FDMA) system, orthogonal OFDMA, orthogonal frequency-division multiple access system, single carrier FDMA (SC-FDMA) system, general packet radio service (GPRS, genera 1 packet radio service) system, long term evolution (LTE, long term evolution) ) systems, and other such communication systems.

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 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. For example, personal communication service (PCS), telephone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), personal digital assistant (PDA) . 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. In the idle mode, there is no radio resource control connection (RRC) between the user equipment and the network, and the network does not know the location of the cell where the user equipment is located. 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. 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. In the common channel state, the RRC connection is established between the user equipment and the network, and the user equipment is assigned a dedicated physical channel (DPCH). 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.

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. Embodiment 1

An embodiment of the present invention provides a method for determining a receiving antenna. As shown in FIG. 1, the method includes:

S1 01: 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.

When the user equipment in the idle mode selects a suitable cell to camp on, or the user equipment in the common channel state is in the serving cell, an initial random access procedure is initiated. 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.

Specifically, 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.

Further, 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.

Specifically, 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.

Further, the base station detects that the random access preamble is received on the antenna of the second cell. The signal quality of the number, the signal quality including at least one of chip energy intensity, symbol energy intensity, symbol signal to interference ratio, and chip signal to interference ratio.

It should be noted that, in the embodiment of the present invention, 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.

If the first cell and the second cell belong to the same base station, 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 When the base stations to which the second cell belongs are different, the steps of the steps in the embodiment of the present invention are the master control base station, and 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.

S1 02: 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.

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.

Specifically, 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. One of the receiving antennas.

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.

It should be noted that 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.

For example, 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. Receiving the random access preamble signal, 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 threshold, 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 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.

After 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.

Specifically, 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. With this solution, 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. Embodiment 2

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.

When the user equipment in the idle mode selects a suitable cell to camp on, or the user equipment in the common channel state is in the serving cell, an initial random access procedure is initiated. 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.

Specifically, when the user equipment in the idle mode selects a suitable cell to camp on, or the user equipment in the common channel state is in the serving cell, 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.

It should be noted that the antenna of the first cell and the second cell in the embodiment of the present invention The antennas 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.

If the first cell and the second cell belong to the same base station, 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 When the base stations to which the second cell belongs are different, the steps of the steps in the embodiment of the present invention are the master control base station, and 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. .

S 2 02. 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.

Specifically, 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.

Further, 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.

For example, 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.

S 2 04. 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.

Specifically, 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.

It should be noted that, 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.

S 2 05. 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.

After determining the uplink receiving antenna of the user equipment, the base station receives the wireless signal sent after the user equipment.

Specifically, 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.

S 2 06. The base station receives the wireless signal sent by the user equipment by using the antenna of the second cell.

After the base station determines that the uplink receiving antenna of the user equipment includes the antenna of the second cell, the wireless signal transmitted by the user equipment can be received by the neighboring cell antenna.

Specifically, 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.

S2 07. 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.

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.

Specifically, 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. With this solution, 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. Embodiment 3

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.

Further, as shown in FIG. 4, 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.

Further, the acknowledgement message is sent via an antenna of the first cell or an antenna of the second cell.

Further, as shown in FIG. 4, 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.

Further, 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.

Further, 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. With this solution, 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. Uplink joint receiving antenna, making the user equipment initial When the connection state is transferred, the uplink joint reception can be obtained, which improves the uplink reception reliability of the user equipment and reduces the system interference. Embodiment 4

As shown in FIG. 5, 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.

Further, as shown in FIG. 6, 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.

Further, as shown in FIG. 6, 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.

Further, 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.

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. With this solution, 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.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above functional assignments may be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, 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.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

claims

1. A method for determining a receiving antenna, which is characterized by including:

Detecting the signal quality of the random access preamble signal sent by the user equipment on the random access channel of the first cell received from the antenna of the second cell, and the second cell is a neighboring cell of the first cell;

If the signal quality of the random access preamble signal received by the antenna of the second cell exceeds the threshold value, it is determined that the uplink receiving antenna of the user equipment includes the antenna of the second cell;

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 and processed.

2. The method of determining a receiving antenna according to claim 1, characterized in that, after determining that the uplink receiving antenna of the user equipment includes the antenna of the second cell, the antenna of the first cell receives Before jointly receiving and processing the received wireless signal sent by the user equipment and the wireless signal sent by the user equipment received by the antenna of the second cell, the method further includes:

A confirmation message is sent to the user equipment, where the confirmation message is used to indicate that the random access preamble signal has been successfully detected.

3. The method for determining a receiving antenna according to claim 2, wherein the confirmation message is sent via the antenna of the first cell and/or the antenna of the second cell.

4. The method of determining a receiving antenna according to claim 1, characterized in that: the wireless signal sent by the user equipment received by the antenna of the first cell is combined with the wireless signal received by the antenna of the second cell. The wireless signals sent by the user equipment are jointly received and processed, specifically including:

Receive the wireless signal sent by the user equipment through the antenna of the first cell; receive the wireless signal sent by the user equipment through the antenna of the second cell; demodulate the wireless signal received by the antenna of the first cell. The wireless signal sent by the user equipment 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 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 signals. Multipath diversity reception technology RAKE combining, log-likelihood ratio LLR stream combining or decoding result selective combining.

5. The method for determining a receiving antenna according to claim 4, wherein the wireless signal sent by the user equipment includes a wireless signal sent by the user equipment during the random access process and/or during the random access process. After the entry process is completed, the user equipment enters the dedicated connection state and sends wireless signals on the dedicated uplink channel.

6. The method for determining a receiving antenna according to any one of claims 1 to 5, characterized in that:

The signal quality of the random access preamble signal includes at least one of chip energy intensity, symbol energy intensity, symbol signal-to-interference ratio, and chip signal-to-interference ratio.

7. A base station, characterized by including:

A detection unit configured to detect the signal quality of the random access preamble signal sent by the user equipment on the random access channel of the first cell received from the antenna of the second cell, and the second cell is the first cell. neighboring communities;

A determining unit configured to determine that the uplink receiving antenna of the user equipment includes the antenna of the second cell if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold value;

A processing unit configured to jointly receive and process 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.

8. The base station according to claim 7, characterized in that, 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, transmit the wireless signal sent by the user equipment received by the antenna of the first cell to the processing unit. Before the signal is jointly received and processed with the wireless signal sent by the user equipment received by the antenna of the second cell, a confirmation message is sent to the user equipment, where the confirmation message is used to indicate the random access preamble signal. has been successfully detected.

9. The base station according to claim 8, characterized in that,

The confirmation message is sent via the antenna of the first cell and/or the antenna of the second cell.

10. The base station according to claim 7, characterized in that, the base station further includes a receiving unit;

The receiving unit is configured to receive the wireless signal sent by the user equipment through the antenna of the first cell after the sending unit sends a confirmation message to the user equipment, and is configured to receive the wireless signal sent by the user equipment after the sending unit sends the confirmation message to the user equipment. After the user equipment sends the confirmation message, the wireless signal sent by the user equipment is received through the antenna of the second cell.

11. The base station according to claim 10, characterized in that, the wireless signal sent by the user equipment includes a wireless signal sent by the user equipment during the random access process and/or during the random access process. After completion, the user equipment enters the dedicated connection state and sends wireless signals on the dedicated uplink channel.

1 2. The base station according to any one of claims 7 to 1 1, characterized in that the signal quality of the random access preamble signal includes chip energy intensity, symbol energy intensity, symbol signal-to-interference ratio, chip At least one of the letter-to-stem ratios.

1 3. A base station, characterized by including:

A processor configured to detect the signal quality of the random access preamble signal sent by the user equipment on the random access channel of the first cell received from the antenna of the second cell, the second cell being the first cell. neighboring cells, and for determining that the uplink receiving antenna of the user equipment includes the second cell if the signal quality of the random access preamble signal received by the antenna of the second cell exceeds a threshold value. The antenna is further configured to jointly receive and process 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.

14. The base station according to claim 13, characterized in that, the base station includes a transmitter;

The transmitter is configured to determine the uplink receiving time of the user equipment when the processor determines After the line includes the antenna of the second cell, the wireless signal sent by the user equipment received by the antenna of the first cell is compared with the wireless signal sent by the user equipment received by the antenna of the second cell. Before joint reception, a confirmation message is sent to the user equipment, where the confirmation message is used to indicate to the user equipment that the random access preamble signal has been successfully detected.

15. The base station according to claim 14, characterized in that,

16. The base station according to claim 13, characterized in that, the base station further includes a receiver;

The receiver is configured to receive the wireless signal sent by the user equipment through the antenna of the first cell after the transmitter sends a confirmation message to the user equipment, and is used to receive the wireless signal sent by the user equipment after the transmitter sends the confirmation message to the user equipment. After the user equipment sends the confirmation message, the wireless signal sent by the user equipment is received through the antenna of the second cell.

17. The base station according to claim 16, characterized in that, the wireless signal sent by the user equipment includes a wireless signal sent by the user equipment during the random access process and/or during the random access process. After completion, the user equipment enters the dedicated connection state and sends wireless signals on the dedicated uplink channel.

18. The base station according to any one of claims 13 to 17, characterized in that the signal quality of the random access preamble signal includes chip energy intensity, symbol energy intensity, symbol signal-to-interference ratio, code At least one of the Kashingan ratio.