WO2017132855A1 - Data processing method, base station and terminal - Google Patents

Abstract

Provided in the application are a data processing method, a base station and a terminal, used for enabling a base station to effectively implement decoding of service data by means of a target pilot sequence when two or a plurality of terminals experience resource collision, thereby effectively increasing the reliability of data transmission. The following solution is provided in the present application: a base station receives a data frame sent by a terminal, the data frame comprising service data and a target pilot sequence, the data frame being sent to the base station by the terminal using time-frequency resources according to a target pilot pattern, the time-frequency resources being acquired by the terminal on the basis of the target pilot pattern according to restriction conditions, the target pilot pattern being acquired by the terminal from a pilot pattern set, the target pilot sequence being acquired by the terminal from a pilot sequence set, the pilot pattern set comprising at least two pilot patterns and/or the pilot sequence set comprising at least two pilot sequences; the base station acquires the target pilot sequence and the target pilot pattern of the data frame; and the base station implements decoding of the service data on the basis of the target pilot sequence and the target pilot pattern.

Description

A data processing method and base station and terminal Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a data processing manner, a base station, and a terminal.

Background technique

In the existing communication system, the terminal sends data to the base station usually by using the uplink scheduling transmission mode, that is, the terminal can complete the data transmission by the following steps: the terminal sends an access request to the base station, and the base station replies to the terminal with the access response. The terminal sends a buffer status report to the base station to notify the base station of the amount of data to be sent. The base station sends a message to inform the terminal that the terminal has successfully accessed and allocates time-frequency resources to the terminal, and the terminal sends data according to the allocated time-frequency resource, in the whole process. The information exchange between the terminal and the base station before data transmission takes a long time, resulting in a long delay in data transmission between the terminal and the base station. To solve this problem, the technician proposed a scheme for uplink unscheduled transmission.

In the uplink unscheduled transmission scheme, when the terminal needs to send data, it is not necessary to send an access request to the base station and wait for the base station to allocate time-frequency resources, but the terminal randomly selects the time-frequency resource to directly send the data packet.

However, the above solution may cause two or more terminals to select the same or partially identical time-frequency resources for data transmission, that is, resource collision occurs in two or more terminals. In this case, the signals between the terminals interfere with each other, causing the base station to generate an error when performing channel estimation on the channel on which the data transmitted by the terminal is located, thereby causing subsequent channel equalization, and the demodulation and decoding processes cannot be performed normally. That is, it may be impossible to solve the data of all or part of the terminals in which the resource collision occurs, which affects the reliability of data transmission.

Summary of the invention

The embodiment of the present application provides a data processing method, and a base station and a terminal, where the base station can effectively decode the service data by using the target pilot sequence and the target pilot pattern when resource collision occurs in two or more terminals. Effectively improve the reliability of data transmission.

In a first aspect, an embodiment of the present application provides a data processing method, including:

The base station receives, by using the time-frequency resource, the data frame that includes the service data and the target pilot sequence that is sent to the base station according to the target pilot pattern, and the time-frequency resource used by the terminal is obtained by the terminal according to the The target pilot pattern is obtained from all time-frequency resources according to a constraint condition, and the target pilot pattern is obtained by the terminal from the acquired set of pilot patterns, where the target pilot sequence is obtained from the terminal. Obtaining in a frequency sequence set, and at least one of the two sets of the pilot pattern set and the set of pilot sequences includes at least two elements; the base station acquires the target pilot sequence of the data frame and the a target pilot pattern; the base station decodes the service data according to the target pilot sequence and the target pilot pattern.

In the solution provided by the embodiment of the present application, the base station can effectively obtain the target pilot sequence and the target pilot pattern of each data frame, and decode the service data by using the target pilot sequence and the target pilot pattern, when two or When a resource collision occurs in multiple terminals, the base station receives multiple data frames using the same or part of the same time-frequency resource, and the base station can also decode the data of multiple terminals by using the above method, thereby effectively improving data transmission. reliability.

Optionally, in the embodiment of the present application, the method for the base station to obtain the service data, the target pilot pattern, and the target pilot sequence of the data frame sent by the terminal may be: the base station sets the pilot pattern and the pilot sequence set. The combination that may be used by the terminal performs a one-to-one attempt to detect the detection result, and the detection result is used to indicate whether the target pilot sequence and the target pilot pattern are used by the terminal. When the detection result indicates that the target pilot sequence and the target pilot pattern are used by the terminal, the base station determines that the current pilot sequence and the pilot pattern are combined into the target pilot sequence and the target pilot pattern.

At the same time, when detecting the target pilot sequence, when the terminal determines to use the target pilot sequence, the channel coefficient modulus corresponding to the target pilot sequence is higher than the channel coefficient modulus of other pilot sequences, so the base station can also pass Determining the target pilot sequence by determining the modulus of the channel coefficients of each pilot sequence, the specific operation is not limited herein, as long as the target pilot sequence and the target pilot pattern can be correctly acquired.

In the solution provided by the embodiment of the present application, the base station reduces the complexity in acquiring the target pilot sequence and the target pilot pattern in the decoding process by limiting the use range of the pilot pattern and the pilot sequence.

Optionally, before receiving the data frame sent by the terminal, the base station needs to determine a pilot pattern set and a pilot sequence set between the base station and the terminal. The following embodiments are provided:

One possible implementation manner is that the base station and the terminal determine the pilot pattern set and/or the pilot data set according to a prior protocol.

Another possible implementation manner is that the base station sets the pilot pattern set and/or the pilot sequence set and sends the pilot pattern set and/or the pilot sequence set to the terminal.

After the pilot pattern set and the pilot sequence set are determined between the base station and the terminal, the base station may adjust the pilot pattern set and/or the pilot sequence set in real time according to actual conditions in the communication range, or may use the pilot pattern. The set and pilot sequence fixes are no longer changed. Specific practices are not limited here.

In the technical solution provided by the embodiment of the present application, there may be multiple methods for determining a pilot pattern set and a pilot sequence set between a base station and a terminal, so that the base station and the terminal can flexibly use different methods to adapt. Different situations.

Optionally, when the base station sets the pilot pattern set and/or the pilot sequence set or adjusts the pilot pattern set and/or the pilot sequence set according to actual conditions, the following possible implementation manners are available:

One possible implementation manner is: the base station monitors the total traffic of all terminals in its own communication range; when the total traffic exceeds the first threshold, the base station increases the number of pilot sequences in the pilot sequence set to Or selecting a first target pilot pattern set or increasing the number of pilot sequences in the set of pilot sequences to a second threshold and selecting a first target pilot pattern set, the first target pilot pattern set The number of pilot sequences corresponding to the pilot pattern is the second threshold; when the total traffic is lower than the third threshold, the base station reduces the number of pilot sequences in the pilot sequence set to a fourth threshold or Selecting a second target pilot pattern set or reducing the number of pilot sequences in the set of pilot sequences to a fourth threshold and selecting a second target pilot pattern set corresponding to the pilot pattern in the second target pilot pattern set The number of pilot sequences is the fourth threshold.

Another possible implementation manner is: the base station receives the log information sent by the terminal, where the log information includes a situation in which the terminal fails to send data; and when the log information indicates that the number of times the terminal fails to transmit data exceeds a fifth threshold, the base station Adding the number of pilot sequences in the set of pilot sequences to a sixth threshold or selecting a third target pilot pattern set or increasing the number of pilot sequences in the set of pilot sequences to a sixth threshold and selecting a third The target pilot pattern set, the number of pilot sequences corresponding to the pilot pattern in the third target pilot pattern set is the sixth threshold.

Another possible implementation manner is: the base station receives the report information sent by the network element of the communication system, where the report information is used to instruct the base station to update the pilot pattern set; and the base station selects the fourth target pilot pattern set according to the report information. The fourth target pilot pattern set does not conflict with the pilot pattern set selected by other base stations.

In the solution provided by the present application, the network elements of the communication system include, but are not limited to, a Packet Data Network Gateway (P-GW), a Mobility Management Entity (MME), and other base stations.

In the technical solution provided by the embodiment of the present application, the base station may adjust the pilot sequence set and the pilot pattern set in real time according to specific conditions, and effectively control the probability of the terminal colliding, thereby effectively improving the efficiency and correctness of the decoding.

Optionally, when the base station determines that the multi-user multiple input multiple output (MU-MIMO) technology is used for uplink unscheduled transmission, the time-frequency resource selected by the terminal in the communication range of the base station is selected. The following constraint should be met: the time-frequency resource includes an integer number of complete periods of the target pilot pattern in the frequency direction, and the time-frequency resource includes an integer number of complete periods of the target pilot pattern in the time direction.

In the technical solution provided by the embodiment of the present application, the constraint condition of the good time-frequency resource is determined to ensure that the MU-MIMO technology can be performed normally.

Optionally, when the terminal includes multiple transmit antennas, the terminal may use different transmit modes for data transmission, and the base station also adopts different signal processing manners. Therefore, the base station can determine the transmission mode with the terminal, and the following possible implementation manners are as follows:

A possible implementation manner is: the base station sets a transmission mode of the terminal and sends the mode to the terminal;

Another possible implementation manner is: the base station and the terminal protocol agree on the transmission mode;

After the base station and the terminal determine the transmission mode of the terminal, the data frame sent by the terminal is correspondingly changed to be transmitted by the terminal to the base station by using the time-frequency resource according to the target pilot pattern in the transmission mode.

Optionally, the base station and the terminal may further determine other parameters including, but not limited to, a modulation and coding scheme, a transmission time interval, and the like. The method for determining other parameters between the base station and the terminal may be sent by the base station to the terminal for the other parameters. The information may also be related to the terminal protocol, and the other parameters are not limited herein.

In the technical solution provided by the embodiment of the present application, determining a good transmission mode between the base station and the terminal may reduce the complexity of the base station acquiring the target pilot sequence and the target pilot pattern of the data frame, and providing multiple methods for determining the transmission mode. In this way, different methods can be flexibly used between the base station and the terminal to adapt to different situations.

Optionally, when the base station sets the transmission mode of the terminal, the following possible implementation manners are available:

A possible implementation manner is: the base station monitors a total traffic volume of all terminals in a communication range, where the communication range is a coverage range of the base station; when the total traffic volume exceeds a first preset value, the base station uses the transmission mode The multi-antenna multiplexed transmission mode is set; when the total traffic is lower than the second preset value, the base station sets the transmission mode to the single antenna transmission mode.

In the technical solution provided by the embodiment of the present application, multiple methods are provided between the base station and the terminal to determine the transmission mode, so that different methods can be flexibly used between the base station and the terminal to adapt to different situations.

In a second aspect, an embodiment of the present application provides a data processing method, including:

And acquiring, by the terminal, a set of pilot patterns and a set of pilot sequences, where the set of pilot patterns includes at least two pilot patterns and/or the set of pilot data columns includes at least two pilot sequences; the terminal is in the set of pilot sequences Obtaining a target pilot sequence, acquiring a target pilot pattern in the pilot pattern set, and acquiring a time-frequency resource according to the constraint condition according to the target pilot pattern; and using, by the terminal, the time-frequency resource to the base station according to the target pilot pattern Transmitting a data frame, so that the base station decodes the service data according to the target pilot sequence and the target pilot pattern, where the target pilot sequence and the target pilot pattern are acquired by the base station according to the data frame.

In the solution provided by the embodiment of the present application, the base station can effectively obtain the target pilot sequence and the target pilot pattern of each data frame, and decode the service data by using the target pilot sequence and the target pilot pattern, when two or When a resource collision occurs in multiple terminals, the base station receives multiple data frames using the same or part of the same time-frequency resource, and the base station can also decode the data of multiple terminals by using the above method, thereby effectively improving data transmission. reliability.

Optionally, when the base station determines to use the MU-MIMO technology for uplink unscheduled transmission, the time-frequency resource selected by the terminal in the communication range of the base station should meet the following constraint: the time-frequency resource includes the target in the frequency direction. An integer number of complete periods of the pilot pattern, the time-frequency resource including an integer number of complete periods of the target pilot pattern in the time direction.

In the technical solution provided by the embodiment of the present application, the constraint condition for determining the good time-frequency resource is to ensure that the multi-user multiple input and multiple output technology can be performed normally.

Optionally, before the terminal sends the data frame to the base station, the terminal and the base station need to acquire a pilot map. The embodiment of the present application provides the following possible implementation manners:

A possible implementation manner is: the terminal receives the pilot pattern set and/or the pilot sequence set sent by the base station;

Another possible implementation manner is that the terminal and the base station protocol agree on the set of pilot patterns and/or the set of pilot sequences.

In the technical solution provided by the embodiment of the present application, multiple methods are provided between the terminal and the base station to determine the pilot pattern set and the pilot sequence set, so that the terminal and the base station can flexibly use different methods to adapt to different Happening.

Optionally, after the terminal sends the data frame to the base station, after the data frame is successfully sent, the terminal may receive an affirmative response sent by the base station, and if the data frame fails to be sent, may receive a negative answer sent by the base station or may not receive the data. I did not receive a negative answer to the affirmative answer. In this case, the terminal may generate the log information and send the log information to the base station by reporting the case where the data is transmitted by the base station, so that the base station adjusts the pilot pattern set and/or the pilot sequence set in real time. After the data frame is sent, the terminal starts a timer and a counter for accumulating the number of times the terminal fails to send data; when the timer expires or the accumulated number of times exceeds a preset number, the terminal generates a command for the terminal to send The case log information of the data failure; the terminal sends the log information to the base station.

In the embodiment of the present application, the terminal may generate log information for sending data in a period of time or may generate log information after triggering a certain condition. The manner in which the terminal generates log information is not limited. The log information may also include a lot of other information, such as the success of the data transmission by the terminal, such as the current usage of the transmission mode, such as the case of the used subcarriers. The content of the log information is not limited herein.

In the technical solution provided by the embodiment of the present application, the terminal reports its own data transmission status and other information that may be needed to the base station, which helps the base station to more accurately determine whether the time-frequency resource or the pilot sequence is idle, thereby adjusting the time-frequency. Resource or pilot sequence or transmit mode or pilot pattern.

Optionally, when the terminal sends log information to the base station, multiple methods may be used, as follows:

A possible implementation manner is: the terminal selects a preamble of a specific format according to the log information, and sends the preamble to the base station;

In the solution provided by the present application, there may be multiple situations in which the terminal sends the preamble to the base station. For example, after sending the preamble after the preset duration, the preamble may be sent immediately after selecting the preamble according to the log information, or the preamble may be selected by using a specific time-frequency resource, where the specific time-frequency resource may be a predetermined resource block. . The specific transmission method is not limited here.

Another possible implementation manner is that the terminal sends a data frame containing the log information to the base station.

In the solution provided by the present application, the log information may be added in a format that is agreed with the base station in the data frame, and there may be other manners, which is not limited herein.

In the technical solution provided by the embodiment of the present application, the terminal uses multiple methods to send log information, so that the terminal can flexibly use different methods to adapt to different situations.

Optionally, when the terminal includes multiple transmit antennas, the terminal may use different transmit modes for data transmission, and the base station also adopts different signal processing manners. Therefore, the terminal needs to acquire the transmission mode. The specific methods are as follows:

A possible implementation manner is: the terminal receives broadcast information about a transmission mode sent by the base station, and selects a transmission mode according to the broadcast information;

Another possible implementation manner is: a transmission mode adopted by the terminal between the terminal and the base station according to a protocol;

After the terminal acquires the transmission mode, the terminal may use the time-frequency resource to send the data frame to the base station in the transmission mode according to the target pilot pattern.

The method for obtaining the transmission mode of the terminal has the following possible implementation modes:

A possible implementation manner is: the terminal acquires a first preset threshold, where the preset threshold is used to indicate a size of the sent data amount; when the data amount is greater than the first preset threshold, the The terminal selects the multi-antenna multiplexing mode to send the data frame; when the amount of data is not greater than the first preset threshold, the terminal selects the single antenna mode to send the data frame.

Another possible implementation manner is: the terminal acquires a second preset threshold value, where the second preset threshold value is used to indicate the quality of the channel quality of the channel on which the terminal is located; when the channel quality is inferior to the first When the threshold is preset, the terminal selects the multi-antenna diversity mode to send the data frame; when the channel quality is better than the second preset threshold, the terminal selects the single antenna mode to send the data frame.

In the technical solution provided by the embodiment of the present application, multiple methods are provided between the terminal and the base station to determine the transmission mode, so that the terminal and the base station can flexibly use different methods to adapt to different situations, and the terminal according to different situations. To choose different transmission modes can effectively reduce base station acquisition. The complexity of the target pilot sequence and the target pilot pattern.

In a third aspect, an embodiment of the present application provides a base station, where the base station has a function of implementing a base station in the foregoing method. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation manner, the base station includes:

a receiving module, configured to receive a data frame sent by the terminal, where the data frame includes service data and a target pilot sequence, where the data frame is sent by the terminal to the base station by using a time-frequency resource according to a target pilot pattern, where the time-frequency resource is Obtaining, by the terminal, the constraint according to the target pilot pattern, where the target pilot pattern is obtained by the terminal from a set of pilot patterns, where the target pilot sequence is obtained by the terminal from a set of pilot sequences, where the pilot pattern set includes At least two pilot patterns and/or the set of pilot sequences comprise at least two pilot sequences;

The processing module is configured to obtain the target pilot sequence of the data frame received by the receiving module and the target pilot pattern, and decode the service data according to the target pilot sequence and the target pilot pattern.

In another possible implementation manner, the base station includes:

Receiver, processor, bus;

The receiver is connected to the processor via the bus;

The receiver performs the following steps:

Receiving a data frame sent by the terminal;

The processor performs the following steps:

Obtaining the target pilot sequence of the data frame and the target pilot pattern;

The service data is decoded according to the target pilot sequence and the target pilot pattern.

In a fourth aspect, the embodiment of the present application provides a terminal, where the terminal has the function of implementing the terminal in the foregoing method. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

A possible implementation manner, the terminal includes:

a processing module, configured to acquire a pilot pattern set and a pilot sequence set, where the pilot pattern set includes at least two pilot patterns and/or the pilot data column set includes at least two pilot sequences; in the pilot sequence Obtaining a target pilot sequence in the set, and acquiring a target pilot pattern in the pilot pattern set, Obtaining a time-frequency resource according to the constraint condition according to the target pilot pattern;

a sending module, configured to send, by using the time-frequency resource acquired by the processing module, a data frame to the base station according to the target pilot pattern acquired by the processing module, so that the base station is configured according to the target pilot sequence and the target pilot pattern. The service data is decoded, and the target pilot sequence and the target pilot pattern are acquired by the base station according to the data frame.

In another possible implementation manner, the terminal includes:

Transmitter, processor, bus;

The transmitter and the processor are connected by the bus;

The processor performs the following steps:

Obtaining, by the terminal, a set of pilot patterns and a set of pilot sequences; acquiring a target pilot sequence in the set of pilot sequences, acquiring a target pilot pattern in the set of pilot patterns, and acquiring according to the constraint condition according to the target pilot pattern Time-frequency resources;

The sender performs the following steps:

The data frame is transmitted to the base station according to the target pilot pattern by using the time-frequency resource.

In a fifth aspect, an embodiment of the present application provides a computer storage medium, where the program storage code stores program code, and the program code is used to indicate that the method of the foregoing first aspect is performed.

A sixth aspect provides a system for data processing, including: a base station and a terminal;

The base station and the terminal acquire a pilot pattern set and a pilot sequence set, the terminal acquires a target pilot pattern from the pilot pattern set, acquires a target pilot sequence from the pilot sequence set, and the terminal according to the target The pilot pattern selects a time-frequency resource for transmitting data according to a constraint condition, and finally the terminal uses the time-frequency resource to send a data frame including the service data and the target pilot sequence to the base station according to the target pilot pattern, and the base station receives the data frame. After the data frame, the target pilot sequence and the target pilot pattern of the data frame are obtained, and finally the base station decodes the service data of the data frame according to the target pilot sequence and the target pilot pattern.

DRAWINGS

1 is a schematic diagram of a frame of a data processing system according to an embodiment of the present application;

2 is a schematic diagram of an embodiment of a data processing method in an embodiment of the present application;

3 is a schematic diagram of a pilot pattern in an embodiment of the present application;

4 is another schematic diagram of a pilot pattern in an embodiment of the present application;

FIG. 5 is another schematic diagram of a pilot pattern in an embodiment of the present application; FIG.

6 is a schematic diagram of a time-frequency resource and a pilot pattern used by a terminal to transmit a data frame according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of an embodiment of a base station according to an embodiment of the present application;

FIG. 8 is a schematic diagram of an embodiment of a terminal in an embodiment of the present application;

FIG. 9 is a schematic diagram of another embodiment of a base station according to an embodiment of the present application;

FIG. 10 is a schematic diagram of another embodiment of a terminal in an embodiment of the present application.

detailed description

The embodiment of the present invention provides a data processing method, a base station, and a terminal. When a resource collision occurs in two or more terminals, the base station can effectively decode each service data of each data frame, thereby effectively improving data transmission. reliability.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without having to use To describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

Referring to the communication system shown in FIG. 1, the communication system includes a base station and a terminal. The base station is a management terminal in the cellular network and a node that controls the terminal to receive and transmit data, and the terminal is a user equipment that communicates with the base station in the cellular network. The terminal has one or more transmit antennas, and the base station has multiple receive antennas. The base station and the terminal communicate with each other through air interface technology.

In the existing communication system, the terminal sends data to the base station, usually by using the uplink scheduling transmission. In this whole process, the information exchange between the terminal and the base station before the data transmission takes a long time, thereby causing the terminal and the base station. The data transfer between them creates a long delay. To solve this problem, the technician proposed a scheme for uplink unscheduled transmission.

In the uplink unscheduled transmission scheme, when the terminal needs to send data, it is not required to send an access request to the base station and wait for the base station to allocate time-frequency resources, but the terminal randomly selects the time-frequency resource to directly send the data. package. However, the solution may cause two or more terminals to select the same or partially identical time-frequency resources for data transmission, that is, resource collision occurs in two or more terminals. In this case, multiple terminals interfere with each other, which causes the base station to generate errors when performing channel estimation on the channel where the data is located. Therefore, it may be impossible to solve data of all or part of the terminals in which the resource collides, which affects data transmission. reliability.

In order to solve this problem, the embodiment of the present application provides a solution that a base station receives a data frame sent by a terminal, and the data frame is sent by the terminal according to a pilot pattern by using a time-frequency resource, where the time-frequency resource is selected by the terminal according to the pilot pattern. Obtaining, by the base station, service data in the data frame and a target pilot sequence, where the target pilot sequence is selected by the terminal from a set of pilot sequence, the pilot sequence set is determined by the base station, and the base station obtains the target pilot After the sequence, the channel coefficient of the service data can be calculated by using the channel coefficient of the target pilot sequence, and the base station decodes the service data according to the channel coefficient of the service data.

The terminal involved in the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile terminal. The computer, for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network. For example, Personal Communication Service (PCS) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA) ) and other equipment. 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, or an access point. Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.

See Figure 2 for details:

201. The base station and the terminal respectively acquire a pilot pattern set and a pilot sequence set.

Specifically, the terminal adopts multi-user multiple input multiple output within the communication range covered by the base station. Before the multi-user multiple input multiple output (MU-MIMO) technology performs the unscheduled uplink transmission, both the base station and the terminal need to acquire the pilot pattern set and the pilot sequence set.

There are several possible implementation manners for the base station and the terminal to acquire the pilot pattern set and the pilot sequence set, which are specifically described below:

A possible implementation manner is: the base station sets a pilot pattern set and a pilot sequence set and sends the same to the terminal;

Another possible implementation manner is: the base station and the terminal agree on a pilot pattern set and a pilot sequence set;

Another possible implementation manner is: the base station sets a pilot pattern set and sends the set to the terminal, and the base station and the terminal agree on a set of pilot sequences;

Another implementation manner is: the base station sets a pilot sequence set and sends the set to the terminal, and the base station and the terminal agree on a set of pilot patterns.

There should be at least two elements in the set between the pilot pattern set and the pilot sequence set, that is, the case where only one pilot pattern and one pilot sequence cannot occur.

202. The terminal selects a target pilot pattern from the set of pilot patterns, and selects a target pilot sequence from the set of pilot sequences, and selects a time-frequency resource according to the constraint according to the target pilot pattern.

After acquiring the information about the pilot pattern set and the pilot sequence set, the terminal reads the pilot pattern set information and the pilot sequence set information, and the terminal randomly selects a pilot pattern from the pilot pattern set as the pilot pattern. The target pilot pattern is selected from the set of pilot sequences as a target pilot sequence. After determining the target pilot pattern, the terminal selects a corresponding time-frequency resource for data transmission according to the constraint condition, where the time-frequency resource includes an integer number of complete periods of the target pilot pattern in the frequency direction in the frequency direction. The time-frequency resource includes an integer number of complete periods of the target pilot pattern in the time direction in the time direction.

203. The terminal sends a data frame to the base station.

The terminal uses the time-frequency resource to send a data frame to the base station according to the target pilot pattern, where the data frame includes the service data and the target pilot sequence. For example, the terminal may perform data transmission according to the pilot pattern and the time-frequency resource shown in FIG. 6, where the target pilot sequence selected by the terminal may be the pilot sequence 1.

Optionally, after the terminal sends the data frame to the base station, the terminal may record the situation that the terminal sends the data, generate the log information, and send the log information to the base station. For example, when the terminal does not receive a positive answer or a negative answer after sending the data or receives a negative answer, the terminal determines the number of times of the transmission. According to the failure, and recording once, after a period of time or after the accumulated number of times reaches the preset value, the terminal generates log information and transmits the log information to the base station.

Based on the foregoing solution, the terminal may select a preamble according to the log information and send the preamble to the base station, or may add the log information in a predetermined format in the transmitted data frame. The manner in which the terminal sends log information is not limited, as long as the data can be accurately reported to the base station.

The preamble in this embodiment may have multiple different formats. For example, there are 8 different cyclic shifts a, b, c, d, e, f, g, h in the system, and there are two in one transmission time interval. Time-frequency resources. At this time, the 8 different cyclic shifts can be divided into 4 groups, each group including two cyclic shifts: (a, b), (c, d), (e, f), (g, h) And the information indicated by each group is as follows: any cyclic shift in (a, b) is used to indicate that the terminal sends data successfully, and any cyclic shift in (c, d) is used to indicate the terminal The data transmission failed 1 to 3 times. Any cyclic shift in (e, f) is used to indicate that the terminal failed to send data 4 to 6 times. Any cyclic shift in (g, h) is used to indicate The terminal failed to send data for 7 times or more. When the log information generated by the terminal indicates that the terminal fails to transmit data 5 times, the terminal may arbitrarily select one of the two resource blocks to send e or f.

204. The base station detects the data frame to obtain a target pilot sequence and a target pilot pattern.

The base station attempts MU-MIMO detection for each pilot sequence and pilot pattern combination that may be used for the data frame. For example, the pilot pattern set determined between the base station and the terminal includes a pilot pattern x, a pilot pattern y, and a pilot pattern z. The pilot sequence set includes a pilot sequence 1 and a pilot sequence 2, and the data frame may be The combination used is as follows: pilot pattern x and pilot sequence 1, pilot pattern y and pilot sequence 1, pilot pattern z and pilot sequence 1, pilot pattern x and pilot sequence 2, In the six cases of the frequency pattern y and the pilot sequence 2 and the pilot pattern z and the pilot sequence 2, the base station detects these six conditions one by one until the target pilot sequence and the target pilot pattern are determined.

Optionally, when the terminal determines that the target pilot sequence is used, the channel coefficient modulus corresponding to the target pilot sequence is higher than the channel coefficient modulus of the other pilot sequences, so the base station may also determine each pilot sequence by using The modulus of the channel coefficients is used to determine the target pilot sequence.

205. The base station decodes the service data according to the target pilot sequence and the target pilot pattern.

After acquiring the target pilot sequence and the target pilot pattern, the base station enters the channel coefficient of the service data according to the channel coefficient of the target pilot sequence and the relationship between the pilot and the service data in the target pilot pattern. Line estimate. The base station performs subsequent channel equalization and channel decoding according to the channel coefficient of the service data, thereby decoding the service data to obtain original information, which includes but is not limited to information such as image or video or audio. For example, the terminal uses the method shown in FIG. 6 to transmit the data frame, and the target pilot sequence used is the pilot sequence 1. The channel coefficient of the pilot sequence 1 is 5, and the channel coefficient of the service data is calculated by using the estimation criterion. Then, the base station performs channel equalization on the service data according to the channel coefficient of the service data, and finally performs decoding of the service data to obtain original information, including but not limited to information such as image or video or audio.

Based on the description of the foregoing method, it can be understood that, after the base station and the terminal determine the pilot pattern set and the pilot sequence set in step 201, the pilot pattern set and/or the pilot sequence set may be performed according to specific conditions. For example, the number of pilot patterns or the type of the pilot pattern in the pilot pattern set is adjusted, and the number of pilot sequences or the type of the pilot sequence in the pilot sequence set is adjusted. The specific adjustment method is not limited herein.

Based on the above method, the specific methods of the base station when setting or adjusting the pilot sequence set and/or the pilot pattern set are as follows:

1. The base station sets or adjusts a pilot sequence set and/or a pilot pattern set according to the total traffic of all terminals in its own communication range.

The base station monitors the total traffic of all the terminals in the communication range. When the total traffic exceeds the first threshold, it indicates that the traffic within the communication range of the base station is relatively large and is prone to collision, so that the base station needs to guide The number of pilot sequences in the set of frequency sequences is increased to a second threshold, or the first set of target pilot patterns is selected, or the number of pilot sequences in the set of pilot sequences is increased to a second threshold and the first target is selected a frequency pattern set, the number of pilot sequences corresponding to the pilot pattern in the first target pilot pattern set is a second threshold; when the total traffic volume is lower than the third threshold, indicating that the base station is within the communication range The traffic is relatively small, and the base station can reduce the number of pilot sequences in the pilot sequence set to a fourth threshold, or select a second target pilot pattern set, or reduce the number of pilot sequences in the pilot sequence set. Go to a fourth threshold and select a second target pilot pattern set, where the number of pilot sequences corresponding to the pilot pattern in the second target pilot pattern set is a fourth threshold, so that The base station in the light of the complexity of blind detection process. In practical applications, the base station can know the total traffic within the communication range by demodulating the uplink data.

For example, there are 8 pilot sequences in the current pilot sequence set of the base station, and the pilots in the pilot pattern set There are two frequency patterns, and the pilot sequences corresponding to the two pilot patterns are eight. When the total traffic exceeds 1000 bits, the base station considers that the current pilot sequence is used too frequently and the time-frequency resource occupancy is too large. At this time, the base station can increase the current eight pilot sequences to 12 pilot sequences. Or, the pilot pattern in the pilot pattern set is replaced with a pilot pattern having 12 pilot sequences. When the total traffic is less than 500 bits, the base station considers that the current pilot sequence is idle and the occupancy of the time-frequency resources is not large. At this time, the base station can reduce the number of existing pilot sequences to four pilots. The frequency sequence is either a pilot pattern in the set of pilot patterns is replaced with a pilot pattern having four pilot sequences.

2. The base station sets or adjusts a pilot sequence set and/or a pilot pattern set according to the log information sent by the terminal.

The base station receives the log information sent by the terminal, where the log information includes a situation in which the terminal fails to send data; when the log information indicates that the number of times the terminal fails to transmit data exceeds a fifth threshold, the base station increases the number of pilot sequences in the pilot sequence set to the first Six thresholds, or selecting a third target pilot pattern set, or increasing the number of pilot sequences in the pilot sequence set to a sixth threshold and selecting a third target pilot pattern set, in the third target pilot pattern set The number of pilot sequences corresponding to the pilot pattern is the sixth threshold.

In an actual application, the terminal may generate log information by sending data to itself and send the log information to the base station. After receiving the log information, the base station may roughly estimate the current time-frequency resource or guide according to the situation in which the terminal sends data. The use of frequency sequences.

For example, if the log information indicates that the number of times the terminal fails to send data within one hour is up to 30 times or the number of successful times is less than 10 times, the base station can determine that the current time-frequency resource occupancy rate is too high or the pilot sequence is frequently used. There are too many signals in the collision, and decoding is difficult, so that the base station can adjust the current 8 pilot sequences to 12 pilot sequences in real time, or change the pilot pattern in the pilot pattern set to 12 guides. The pilot pattern of the frequency sequence. The log information may also indicate that when the terminal fails to send data for 5 times or the number of successes is 35 times within one hour, the base station considers that the current time-frequency resource is sufficient or the pilot sequence is idle, in order to reduce the base station during decoding. Complexity, the base station may also adjust the 8 pilot sequences to 4 pilot sequences, or change the pilot pattern in the pilot pattern set to a pilot pattern with 4 pilot sequences, specific The comparison parameters can be set as needed, and are not limited here.

3. The base station sets or adjusts the pilot sequence according to the report information sent by the network element or the interface of the communication system. A collection of collections and/or pilot patterns.

The base station receives the report information sent by the network element of the communication system, where the network element includes other base stations in the communication system, the report information is used to instruct the base station to update the pilot pattern set, and the base station selects the fourth target pilot pattern set according to the report information, The set of four target pilot patterns is different from the set of pilot patterns selected by other base stations. For example, suppose there are three neighboring cells, which are respectively managed by the base station A, the base station B, and the base station C; there are three pilot patterns, a pilot pattern x, a pilot pattern y, and a pilot pattern z, and there are eight pilot sequences. , pilot sequence 1 to pilot sequence 8, the current setting is that the base station A uses the pilot pattern x, the base station B uses the pilot pattern y, the base station C uses the pilot pattern z, and the pilot sequence used by the base station A is the pilot sequence. 1 to pilot sequence 4, the pilot sequence used by base station B is pilot sequence 1 to pilot sequence 8, and the pilot sequence used by base station C is pilot sequence 5 to pilot sequence 8, in which each base station is set In the case of different pilot patterns or pilot sequences, the likelihood of signal interference between base stations is much reduced. However, in practical applications, the base station may adjust its own pilot pattern or pilot sequence in real time. At this time, the base station may broadcast in the communication system and adjust its own pilot pattern or pilot sequence through each network interface. Broadcast to other base stations, so that other base stations can also adjust the pilot pattern or the pilot sequence accordingly. For example, the base station A adjusts the pilot pattern x to the pilot pattern y in the middle. In this setting, the base station A and the base station B The probability of signal interference increases. At this time, the base station A notifies the base station B and the base station C. In this case, the base station B can adjust its pilot pattern y to the pilot pattern x, so that The signal interference between the base stations is reduced.

The specific conditions of the pilot pattern x, the pilot pattern y, and the pilot pattern z are as shown in FIG. 3, FIG. 4, and FIG. 5, respectively:

One symbol in the pilot pattern x is used to transmit frequency, and the other symbol is used to transmit service data.

Each symbol in the pilot pattern y will transmit both frequency and service data;

The pilots in the pilot pattern z are dispersed in respective resource blocks of the time-frequency resource;

It can be understood that the symbol here may be an orthogonal frequency division multiplexing symbol, or may be a generalized frequency division multiplexing symbol. The specific name is related to the uplink air interface technology adopted by the system, and is not limited herein.

At the same time, FIG. 3, FIG. 4, and FIG. 5 are only schematic diagrams of the pilot pattern, and the degree of density of the pilot and the position where the pilot appears may be various, which is not limited herein.

Optionally, when the terminal includes multiple transmit antennas, the terminal may select different transmit modes. The transmission of data, that is, between the base station and the terminal, can also determine the transmission mode when the data frame is transmitted.

In practical applications, it can be implemented in a variety of ways:

One way is that the base station sets the terminal to use a different determined subframe or use a determined different frequency or use a determined pilot sequence when using different transmission modes. For example, when the terminal uses a single antenna to transmit, the terminal may select all subframes or use part of the available subcarriers or pilot sequence 1 to the pilot sequence 4 or the pilot pattern x; when the terminal uses dual antenna transmission, the terminal selects a specific one. A sub-frame or another portion of the available sub-carrier or pilot sequence 5 to any combination or pilot pattern 2 between the pilot sequences 8.

Another way: the base station can also adjust the relationship between the transmission mode and the time-frequency resource or the pilot sequence according to actual conditions, and the base station can monitor the total traffic of all terminals in the communication range in real time, and the total traffic volume. To adjust the time-frequency resource or the pilot sequence or the transmission mode of the terminal. For example, when the base station is set to have a total traffic volume greater than 1000 bits, the transmission mode can be set to a multi-antenna multiplexed transmission mode, and more time-frequency resources are allocated for the multi-antenna multiplexed transmission mode or the number of pilot sequences is limited to eight. Adjust to 12 or set a pilot pattern with 12 pilot sequences; when the total traffic is less than 500 bits, you can set the transmission mode to single-antenna transmission mode or allocate less time-frequency resources or pilots. The number of sequences is adjusted from 8 to 4 or a pilot pattern with 4 pilot sequences is set. For example, the base station and the terminal agree that a preset threshold value for the channel quality is 8 and the current channel quality is 9 to indicate that the current channel quality is better than the preset threshold. At this time, the terminal may select multiple antenna multiplexing mode to send. Data; if the current channel quality is 5, the current channel quality is inferior to the preset threshold. At this time, the terminal can select the single antenna mode to transmit data. The base station and the terminal may also agree that a preset threshold value for the data size is 10 bits. When the data volume is 15 bits, the terminal may select the multi-antenna multiplexing mode for data frame transmission; when the data volume is At 8 bits, the terminal can select a single antenna mode for data frame transmission. Certainly, the determining the transmission mode between the base station and the terminal may be that the base station broadcasts to the terminal after the transmission mode is set, and the terminal may read the information from the broadcast information in advance, and may be agreed in advance between the base station and the terminal. The specific manner is not limited herein.

Optionally, the other parameters may be determined between the base station and the terminal. For example, the base station sets only one modulation and coding scheme in its own communication range, or the base station sets the transmission time interval of all the terminals in the communication range to be the same or has two Modulation coding scheme, if the terminal selects one of the modulation and coding schemes, then a part of the subcarriers are used for data transmission, if the terminal selects another modulation The coding scheme is then used to transmit data using another part of the subcarriers. The method for determining other parameters between the base station and the terminal may be that the base station broadcasts to the terminal, and the terminal reads the information from the broadcast information or the value of each parameter is agreed between the base station and the terminal in advance. The specific method is not limited herein.

Based on the method described in step 202, in actual applications, the terminal may select more time constraints for the time-frequency resource, for example, the time-frequency resource may be divided into several resource blocks, and the duration of one resource block is a transmission time interval. The terminal may select a plurality of consecutive resource blocks in the frequency direction for data transmission. For example, when the period of the pilot pattern 6 in the frequency direction is 4 subcarriers and the period in time is 3 symbols, the system can divide all available subcarriers into four groups, A1, A2, A3, and A4. The terminal may select one or two groups, that is, when the terminal uses a group of subcarriers, A1, A2, A3 or A4 may be randomly selected; when the terminal uses two sets of subcarriers, A1 and A2 or A3 and A4 may be randomly selected. Two situations. Meanwhile, in the time direction, the time-frequency resource is divided into three adjacent time segments, each of which has a length of one transmission time interval, and the terminal can only transmit the data frame at the beginning of each transmission time interval.

Optionally, when the terminal includes multiple antennas, the terminal may also select its own transmission mode and use the transmission mode to transmit data. In practical applications, the terminal can agree with the base station how to use the transmission mode for data transmission, or can receive the broadcast information about the transmission mode sent by the base station in real time, and then select the transmission mode for data transmission according to the requirements in the broadcast information. For example, the base station sets the terminal to use a different determined subframe or use a determined different frequency or use a determined pilot sequence or use a determined pilot pattern when using different transmission modes. For example, when the terminal uses single antenna transmission, the terminal may select all subframes or use part of the available subcarriers or pilot sequence 1 to pilot sequence 4 or the pilot pattern x shown in FIG. 3; when the terminal uses dual antenna transmission The terminal selects a specific subframe or another part of the available subcarriers or any combination between the pilot sequence 5 and the pilot sequence 8 or the pilot pattern y shown in FIG. It is also possible that the base station and the terminal agree that a preset threshold value for the channel quality is 8 and the current channel quality is 5, that is, the current channel quality is inferior to the preset threshold, and the terminal can select the multi-antenna multiplexing mode. Send data; the current channel quality is 9 to indicate that the current channel quality is better than the preset threshold. At this time, the terminal can select single antenna mode to transmit data. The base station and the terminal may also agree that a preset threshold value for the data size is 10 bits. When the data volume is 15 bits, the terminal may select the multi-antenna multiplexing mode for data frame transmission; when the data volume is At 8 bits, the terminal can select a single antenna mode for data frame transmission.

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In the solution provided by the embodiment of the present application, the base station can effectively obtain the target pilot sequence and the target pilot pattern when the terminal transmits data, and decode the data sent by the terminal according to the target pilot sequence and the target pilot pattern. , effectively improve the reliability of data transmission. The base station may further report the log information sent by the terminal according to the total traffic volume of all the terminals in the coverage area, and the reported information sent by the network element in the received communication system or the received report sent by other base stations through the interface in the communication system. The information is used to adjust the set of pilot patterns and/or the set of pilot sequences so that the probability of collision of the terminal can be controlled, thereby increasing the probability of correct decoding by the base station. At the same time, the base station and the terminal can also acquire other parameters or adjust the transmission mode, which can effectively reduce the complexity of the base station when acquiring the target pilot pattern and the target pilot sequence.

The data processing method in the embodiment of the present application has been described above. The base station and the terminal in the embodiment of the present application are described below.

For details, refer to FIG. 7. An embodiment of a base station in this embodiment of the present application includes:

The receiving module 701, the processing module 702, the sending module 703;

The receiving module 701 is configured to receive a data frame sent by the terminal, where the data frame includes service data and a target pilot sequence, where the data frame is sent by the terminal to the base station by using a time-frequency resource according to a target pilot pattern, where the time-frequency resource is The terminal acquires according to the constraint condition according to the target pilot pattern, where the target pilot pattern is obtained by the terminal from a set of pilot patterns, where the target pilot sequence is obtained by the terminal from a set of pilot sequences, the set of pilot patterns Include at least two pilot patterns and/or the set of pilot sequences includes at least two pilot sequences;

The processing module 702 is configured to obtain the target pilot sequence of the data frame received by the receiving module and the target pilot pattern, and decode the service data according to the target pilot sequence and the target pilot pattern.

Optionally, the processing module 702 is configured to sequentially detect each pilot pattern in the pilot pattern until determining the target pilot pattern, and sequentially detect each pilot sequence in the pilot sequence until determining. The target pilot sequence.

Optionally, determining the pilot pattern set and the pilot sequence set between the base station and the terminal may have the following possible implementation manners. An implementation manner is: the processing module 702 is further configured to be in agreement with the terminal. The set of pilot patterns and/or the set of pilot data is agreed upon.

Another implementation manner is: the processing module 702 is further configured to set the pilot pattern set and/or the pilot sequence set;

The sending module 703 is configured to send the pilot pattern set and/or the pilot sequence set generated by the processing module to the terminal.

Optionally, when the base station selects the set of the pilot pattern set and/or the pilot sequence set and sends the set to the terminal, the processing module 702 is further configured to: when the total traffic exceeds the first threshold, the pilot is used. The number of pilot sequences in the sequence set is increased to a second threshold or the first target pilot pattern set is selected or the number of pilot sequences in the set of pilot sequences is increased to a second threshold and the first target pilot pattern is selected The set, the number of pilot sequences corresponding to the pilot pattern in the first target pilot pattern set is the second threshold;

When the total traffic volume is lower than a third threshold, reduce the number of pilot sequences in the pilot sequence set to a fourth threshold or select a second target pilot pattern set or pilots in the pilot sequence set The number of sequences is reduced to a fourth threshold or a second target pilot pattern set is selected, and the number of pilot sequences corresponding to the pilot patterns in the second target pilot pattern set is the fourth threshold.

Optionally, when the base station selects the set of the pilot pattern set and/or the pilot sequence set and sends the set to the terminal, the receiving module 701 is further configured to receive the log information sent by the terminal, where the log information includes that the terminal fails to send data. Case;

The processing module 702 is specifically configured to: when the number of times the log information indicates that the terminal fails to send data exceeds a fifth threshold, increase the number of pilot sequences in the pilot sequence set to a sixth threshold or select a third target. Adding a frequency pattern set or increasing the number of pilot sequences in the set of pilot sequences to a sixth threshold and selecting a third target pilot pattern set, the pilot sequence corresponding to the pilot pattern in the third target pilot pattern set The number is the sixth threshold.

Optionally, when the base station selects the set of the pilot pattern set and/or the pilot sequence set and sends the set to the terminal, the receiving module 701 is further configured to receive the report information sent by the network element of the communication system, where the report information is used to indicate The base station updates the pilot pattern set;

The processing module 702 is specifically configured to select a fourth target pilot pattern set according to the report information, where the fourth target pilot pattern set does not conflict with the pilot pattern set selected by other base stations.

Optionally, when the terminal includes multiple transmit antennas, the base station and the terminal may further determine the terminal. The transmission mode, that is, the specific implementation, has the following possible implementation manners. One possible implementation manner is as follows: the processing module 702 is further configured to agree to the transmission mode with the terminal protocol;

or,

The processing module 702 is further configured to: when determining that the terminal includes multiple transmit antennas, set a transmit mode of the terminal;

The sending module 703 is further configured to send the transmission mode to the terminal;

The data frame is transmitted by the terminal to the base station in the transmission mode according to the target pilot pattern by using the time-frequency resource.

Optionally, when the base station sets the transmission mode of the terminal, the processing module 702 is specifically configured to monitor a total traffic volume of all terminals in the communication range, where the communication range is a coverage range of the base station;

When the total traffic exceeds a first preset value, setting the transmission mode to a multi-antenna multiplexing transmission mode;

When the total traffic volume is lower than the second preset value, the transmission mode is set to the single antenna transmission mode.

For details, please refer to FIG. 8 , an embodiment of the terminal in the embodiment of the present application includes:

The sending module 801, the processing module 802, the receiving module 803;

The processing module 802 is configured to acquire a pilot pattern set and a pilot sequence set, where the pilot pattern set includes at least two pilot patterns and/or the pilot data column set includes at least two pilot sequences; Acquiring a target pilot sequence in the frequency sequence set, acquiring a target pilot pattern in the pilot pattern set, and acquiring a time-frequency resource according to the constraint condition according to the target pilot pattern;

The sending module 801 is configured to send, by using the time-frequency resource acquired by the processing module, a data frame to the base station according to the target pilot pattern acquired by the processing module, so that the base station according to the target pilot sequence and the target pilot pattern Decoding the service data, the target pilot sequence and the target pilot pattern are obtained by the base station according to the data frame.

Optionally, the terminal obtains the pilot pattern set and the pilot sequence set, and the possible implementation manner is as follows: the processing module 802 is further configured to: agree with the base station protocol to set the pilot pattern set and/or Or the set of pilot sequences;

Another possible implementation manner is: a receiving module 803, configured to receive the pilot pattern set and/or the pilot sequence set sent by the base station.

Optionally, after the data frame is sent by the terminal, the processing module 802 is further configured to start a timer and a counter, where the timer is used to accumulate the number of times the terminal fails to send data;

After the timer expires or the cumulative number of the counters exceeds a preset number, a log message is generated, where the log information is used to indicate that the terminal fails to send data;

The sending module 801 is further configured to send the log information generated by the processing module to the base station, so that the base station adjusts the pilot sequence set and/or the pilot pattern set according to the log information.

Optionally, when the terminal sends the log information, the following possible implementation manners may be used. One possible implementation manner is: the sending module 801 is specifically configured to send the preamble to the base station;

Another possible implementation manner is: the sending module 801 is specifically configured to send the data frame to the base station, where the data frame includes the log information.

Optionally, when the terminal includes multiple transmit antennas, the terminal may also select a transmit mode, that is, the processing module 802, and is also used to acquire a transmit mode.

The sending module 801 is further configured to send the data frame to the base station by using the time-frequency resource according to the target pilot pattern in the transmission mode acquired by the processing module.

Optionally, the processing module 802 is configured to obtain a first preset threshold, where the preset threshold is used to indicate a size of the sent data; when the amount of data is greater than the first preset In the threshold, the multi-antenna multiplexing mode is selected to send the data frame; when the amount of data is not greater than the first preset threshold, the single antenna mode is selected to transmit the data frame.

Optionally, the processing module 802 is specifically configured to obtain a second preset threshold, where the second preset threshold is used to indicate the quality of the channel on which the terminal is located; when the channel quality is inferior to In the second preset threshold, the multi-antenna diversity mode is selected to send the data frame; when the channel quality is better than the second preset threshold, the single antenna mode is selected to send the data frame.

Referring to FIG. 9 , another embodiment of the base station in the embodiment of the present application includes: a receiver 901 and a processor 902 ; the receiver 901 and the processor 902 are connected to each other through a bus 903 ;

The receiver 901 performs the following steps: receiving a data frame sent by the terminal;

The processor 902 is configured to: obtain the target pilot sequence of the data frame received by the receiving module, and the target pilot pattern; and decode the service data according to the target pilot sequence and the target pilot pattern. .

The bus 903 can be a peripheral component interconnect standard (peripheral component interconnect, simple It is called PCI) bus or extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.

Optionally, the processor 902 further performs the following steps: sequentially detecting each pilot pattern in the pilot pattern until determining the target pilot pattern, and sequentially performing pilot sequences in the pilot sequence. Detection until the target pilot sequence is determined.

Optionally, determining the pilot pattern set and the pilot sequence set between the base station and the terminal may have the following possible implementation manners. One implementation is that the processor 902 further performs the following steps: agreeing with the terminal protocol on the set of pilot patterns and/or the set of pilot data.

Another implementation manner is that the processor 902 further performs the following steps: setting the pilot pattern set and/or the pilot sequence set;

The base station further includes a transmitter 905, and further performs the step of transmitting the set of pilot patterns and/or the set of pilot sequences generated by the processing module to the terminal.

Optionally, when the base station selects to set the pilot pattern set and/or the pilot sequence set and sends the set to the terminal, the processor 902 further performs the following steps: when the total traffic exceeds the first threshold, the guide The number of pilot sequences in the set of frequency sequences is increased to a second threshold or the first target pilot pattern set is selected or the number of pilot sequences in the set of pilot sequences is increased to a second threshold and the first target pilot pattern is selected The set, the number of pilot sequences corresponding to the pilot pattern in the first target pilot pattern set is the second threshold; when the total traffic is lower than the third threshold, the pilot in the pilot sequence set The number of sequences is reduced to a fourth threshold or the second target pilot pattern set is selected or the number of pilot sequences in the set of pilot sequences is reduced to a fourth threshold and a second target pilot pattern set is selected, the second target The number of pilot sequences corresponding to the pilot pattern in the set of frequency patterns is the fourth threshold.

Optionally, when the base station selects the set of the pilot pattern set and/or the pilot sequence set and sends the set to the terminal, the receiver 901 further performs the following steps: receiving the log information sent by the terminal, where the log information includes the terminal sending The case of data failure;

The processor 902 further performs the following steps: when the log information indicates that the number of times the terminal fails to transmit data exceeds a fifth threshold, increasing the number of pilot sequences in the pilot sequence set to a sixth threshold or selecting a The set of three target pilot patterns or the number of pilot sequences in the set of pilot sequences And increasing to a sixth threshold and selecting a third target pilot pattern set, where the number of pilot sequences corresponding to the pilot pattern in the third target pilot pattern set is the sixth threshold.

Optionally, when the base station selects the set of the pilot pattern set and/or the pilot sequence set and sends the set to the terminal, the receiver 901 further performs the following steps: receiving the report information sent by the network element or the interface of the communication system, and reporting the report The information is used to indicate that the base station updates the pilot pattern set;

The processor 902 specifically performs the step of: selecting a fourth target pilot pattern set according to the reporting information, the fourth target pilot pattern set being different from the pilot pattern set selected by other base stations.

Optionally, when the terminal includes multiple transmit antennas, the base station and the terminal may also determine a transmit mode of the terminal, that is, the following specific implementation manners may be implemented. One possible implementation manner is: the processor 902, Performing the following steps: agreeing to the transmission mode with the terminal protocol;

or,

The processor 902 further performs the following steps: when determining that the terminal includes multiple transmit antennas, setting a transmit mode of the terminal;

The transmitter 905 further performs the following steps: sending the transmission mode to the terminal;

The data frame is transmitted by the terminal to the base station in the transmission mode according to the target pilot pattern by using the time-frequency resource.

Optionally, when the base station sets the transmission mode of the terminal, the processor 902 further performs the following steps: monitoring total traffic of all terminals in the coverage area, where the communication range is the coverage of the base station; When the traffic exceeds the first preset value, the transmission mode is set to the multi-antenna multiplexing transmission mode; when the total traffic volume is lower than the second preset value, the transmission mode is set to the single antenna transmission mode.

The processor 902 can be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP.

Processor 902 can also further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.

As shown in FIG. 9, the base station may further include a memory 904; the memory 904 may include a volatile memory, such as a random-access memory (RAM); the memory may also include a non-volatile memory. Non-volatile memory, such as a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory 904 may also include a memory of the above kind. combination.

Alternatively, the memory 904 can also be used to store program instructions, the processor 902 invoking program instructions stored in the memory 904, can perform one or more of the steps of the embodiment shown in FIG. 2, or an alternative embodiment thereof The function of implementing the behavior of the base station in the above method.

Referring to FIG. 10, another embodiment of the terminal in the embodiment of the present application includes: a transmitter 1001 and a processor 1002. The transmitter 1001 and the processor 1002 are connected to each other through a bus 1003.

The processor 1002 may be configured to: acquire a pilot pattern set and a pilot sequence set;

The transmitter 1001 may perform the following steps: the time-frequency resource acquired by the processing module is used to send a data frame to the base station according to the target pilot pattern acquired by the processing module.

Optionally, the terminal obtains the pilot pattern set and the pilot sequence set, and the possible implementation manner is as follows: The processor 1002 further performs the following steps: agreeing with the base station protocol to set the pilot pattern set. And/or the set of pilot sequences;

Another possible implementation manner is that the terminal further includes a receiver 1005, which performs the following steps: receiving the pilot pattern set and/or the pilot sequence set sent by the base station.

Optionally, after the terminal sends the data frame, the processor 1002 further performs the following steps: starting a timer and a counter, where the timer is used to accumulate the number of times the terminal fails to send data;

After the timer expires or the cumulative number of the counters exceeds a preset number, a log message is generated, where the log information is used to indicate that the terminal fails to send data;

The transmitter 1001 further performs the following steps: sending the log information generated by the processing module to the base station, so that the base station adjusts the pilot sequence set and/or the pilot pattern set according to the log information.

Optionally, when the terminal sends the log information, the following possible implementation manners may be used. One possible implementation manner is: the transmitter 1001, and specifically performing the following steps: sending the preamble to the base station;

Another possible implementation manner is: the transmitter 1001, specifically performing the following steps: sending the data frame to the base station, and the data frame is the log information.

Optionally, when the terminal includes multiple transmit antennas, the terminal may also select a transmit mode, that is, the processor 1002, and further perform the following steps: acquiring a transmit mode;

The transmitter 1001 further performs the step of: transmitting, by using the time-frequency resource, the data frame to the base station according to the target pilot pattern in the transmission mode acquired by the processing module.

Based on the foregoing method, optionally, the processor 1002 further performs the following steps: acquiring a first preset threshold, where the preset threshold is used to indicate a size of the sent data; when the amount of data is greater than the first When a preset threshold is used, the multi-antenna multiplexing mode is selected to send the data frame; when the amount of data is not greater than the first preset threshold, the single antenna mode is selected to transmit the data frame.

Optionally, the processor 1002 further performs the following steps: acquiring a second preset threshold, where the second preset threshold is used to indicate the quality of the channel on which the terminal is located; When the quality is inferior to the second preset threshold, the multi-antenna diversity mode is selected to send the data frame; when the channel quality is better than the second preset threshold, the single antenna mode is selected to transmit the data frame.

The bus 1003 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 10, but it does not mean that there is only one bus or one type of bus.

The processor 1002 may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP.

The processor 1002 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.

Referring to FIG. 10, the terminal may further include a memory 1004; the memory 1004, the storage The device 1004 may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a flash memory (flash) Memory), hard disk drive (HDD) or solid-state drive (SSD); the memory 1004 may also include a combination of the above types of memory.

Optionally, the memory 1004 can also be used to store program instructions, the processor 1002 invoking the program instructions stored in the memory 1004, can perform one or more steps in the embodiment shown in FIG. 2, or an optional implementation thereof The function of implementing the terminal behavior in the above method.

In the several embodiments provided by the present application, it should be understood that the disclosed system, 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 unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still The technical solutions are modified, or the equivalents of some of the technical features are replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present application.

Claims (34)

A data processing method, comprising: Receiving, by the base station, a data frame sent by the terminal, where the data frame includes service data and a target pilot sequence, where the data frame is sent by the terminal to the base station by using a time-frequency resource according to a target pilot pattern, where the time-frequency is The resource is obtained by the terminal according to the target pilot pattern according to a constraint condition, where the target pilot pattern is obtained by the terminal from a pilot pattern set, and the target pilot sequence is the terminal from a pilot sequence set. Obtained, the pilot pattern set includes at least two pilot patterns and/or the pilot sequence set includes at least two pilot sequences; Obtaining, by the base station, the target pilot sequence and the target pilot pattern; The base station decodes the service data according to the target pilot sequence and the target pilot pattern. The data processing method according to claim 1, wherein the acquiring, by the base station, the target pilot sequence of the data frame and the target pilot pattern comprises: The base station detects each pilot pattern in the set of pilot patterns to determine the target pilot pattern, and detects each pilot sequence in the set of pilot sequences to determine the target pilot sequence. . The data processing method according to claim 1, wherein before the base station receives the data frame sent by the terminal, the method further includes: The base station and the terminal protocol agree on the set of pilot patterns and/or the set of pilot sequences. The data processing method according to claim 1, wherein before the base station receives the data frame sent by the terminal, the method further includes: The base station sets the pilot pattern set and/or the pilot sequence set; The base station transmits the set of pilot patterns and/or the set of pilot sequences to the terminal. The data processing method according to claim 4, wherein the setting of the pilot pattern set and/or the pilot sequence set by the base station comprises: The base station monitors total traffic of all terminals within its coverage area; When the total traffic exceeds a first threshold, the base station increases the number of pilot sequences in the set of pilot sequences to a second threshold or selects a first target pilot pattern set or the pilot sequence The number of pilot sequences in the set is increased to a second threshold and the first target pilot pattern is selected, and the number of pilot sequences corresponding to the pilot pattern in the first target pilot pattern set is the second threshold; When the total traffic volume is lower than a third threshold, the base station reduces the number of pilot sequences in the pilot sequence set to a fourth threshold or selects a second target pilot pattern set or the pilot The number of pilot sequences in the sequence set is reduced to a fourth threshold and a second target pilot pattern is selected, and the number of pilot sequences corresponding to the pilot pattern in the second target pilot pattern set is the fourth threshold . The data processing method according to claim 4, wherein the setting of the pilot pattern set and/or the pilot sequence set by the base station comprises: Receiving, by the base station, log information sent by the terminal, where the log information includes a situation in which the terminal fails to send data; When the log information indicates that the number of times the terminal fails to transmit data exceeds a fifth threshold, the base station increases the number of pilot sequences in the pilot sequence set to a sixth threshold or selects a third target pilot pattern. Aggregating or increasing a number of pilot sequences in the set of pilot sequences to a sixth threshold and selecting a third target pilot pattern, the pilot sequence corresponding to the pilot pattern in the third target pilot pattern set The number is the sixth threshold. The data processing method according to claim 4, wherein the setting of the pilot pattern set and/or the pilot sequence set by the base station comprises: The base station receives the report information sent by the network element of the communication system, where the report information is used to instruct the base station to update the pilot pattern set; The base station selects a fourth target pilot pattern set according to the report information, where the fourth target pilot pattern set is different from the pilot pattern set selected by other base stations. The data processing method according to claim 1, wherein the constraint condition is that the time-frequency resource includes an integer number of complete periods of the target pilot pattern in a frequency direction in a frequency direction, The time-frequency resource includes an integer number of complete periods of the target pilot pattern in the time direction in the time direction. The data processing method according to any one of claims 1 to 8, wherein before the base station receives the data frame sent by the terminal, the method further includes: When the base station determines that the terminal includes multiple transmit antennas, the base station sets a transmit mode of the terminal and sends the transmit mode to the terminal; or, The base station and the terminal protocol agree on the transmission mode; And the data frame is sent by the terminal to the base station by using the time-frequency resource according to the target pilot pattern in the transmitting mode. The data processing method according to claim 9, wherein the setting, by the base station, the transmission mode of the terminal comprises: The base station monitors total traffic of all terminals within its coverage area; When the total traffic exceeds a first preset value, the base station sets the transmission mode to a multi-antenna multiplexed transmission mode; When the total traffic volume is lower than a second preset value, the base station sets the transmission mode to a single antenna transmission mode. A data processing method, comprising: The terminal acquires a pilot pattern set and a pilot sequence set, where the pilot pattern set includes at least two pilot patterns and/or the pilot data column set includes at least two pilot sequences; Obtaining, by the terminal, the target pilot sequence in the set of pilot sequences, acquiring a target pilot pattern in the pilot pattern set, and acquiring a time-frequency resource according to the constraint condition according to the target pilot pattern; And the terminal uses the time-frequency resource to send a data frame to the base station according to the target pilot pattern, where the target data pilot sequence and the target pilot pattern are used by the base station to decode the service data. The data processing method according to claim 11, wherein the constraint condition is that the time-frequency resource includes an integer number of complete periods of the target pilot pattern in a frequency direction in a frequency direction, The time-frequency resource includes an integer number of complete periods of the target pilot pattern in the time direction in the time direction. The data processing method according to claim 11, wherein the acquiring the pilot pattern set and the pilot sequence set by the terminal comprises: Receiving, by the terminal, the pilot pattern set and/or the pilot sequence set sent by the base station; Or, The terminal and the base station protocol stipulate the pilot pattern set and/or the pilot sequence set. The data processing method according to claim 13, wherein after the terminal uses the time-frequency resource to send a data frame to the base station according to the target pilot pattern, the method further includes: The terminal starts a timer and a counter, and the counter is used to accumulate the number of times the terminal fails to send data; After the timer expires or the cumulative number of counters exceeds a preset number, the terminal generates log information, where the log information is used to indicate that the terminal fails to send data; The terminal sends the log information to the base station, and the log information is used by the base station to adjust the pilot sequence set and/or the pilot pattern set. The data processing method according to claim 14, wherein the transmitting, by the terminal, the log information to the base station comprises: The terminal selects a preamble of a specific format according to the log information, and sends the preamble to the base station; or, The terminal sends the data frame to the base station, where the data frame includes the log information. The data processing method according to any one of claims 11 to 15, wherein before the terminal uses the time-frequency resource to send a data frame to the base station according to the target pilot pattern, the method further includes: When the terminal includes multiple antennas, the terminal acquires a transmission mode; The transmitting, by the terminal, the data frame to the base station according to the target pilot pattern by using the time-frequency resource includes: And transmitting, by the terminal, the data frame to the base station in the transmitting mode according to the target pilot pattern by using the time-frequency resource. The data processing method according to claim 16, wherein the acquiring the transmission mode by the terminal comprises: The terminal acquires a first preset threshold, where the preset threshold is used to indicate the amount of data sent; When the amount of data is greater than the first preset threshold, the terminal selects a multi-antenna multiplexing mode to send the data frame; When the amount of data is not greater than the first preset threshold, the terminal selects a single antenna mode to send the data frame. The data processing method according to claim 16, wherein the acquiring the transmission mode by the terminal comprises: The terminal acquires a second preset threshold value, where the second preset threshold value is used to indicate the quality of the channel quality of the channel where the terminal is located; When the channel quality is inferior to the second preset threshold, the terminal selects a multi-antenna diversity mode to send the data frame; When the channel quality is better than the second preset threshold, the terminal selects a single antenna mode to send the data frame. A base station, comprising: a receiving module, configured to receive a data frame sent by the terminal, where the data frame includes service data and a target pilot sequence, where the data frame is sent by the terminal to the base station according to a target pilot pattern by using a time-frequency resource, The time-frequency resource is obtained by the terminal according to the target pilot pattern according to the constraint condition, where the target pilot pattern is obtained by the terminal from a pilot pattern set, and the target pilot sequence is the terminal from the pilot. Obtained in the sequence set, the pilot pattern set includes at least two pilot patterns and/or the pilot sequence set includes at least two pilot sequences; a processing module, configured to acquire the target pilot sequence and the target pilot pattern, and decode the service data according to the target pilot sequence and the target pilot pattern. The base station according to claim 19, wherein the processing module is configured to detect each pilot pattern in the set of pilot patterns to determine the target pilot pattern, and to the pilot Each pilot sequence in the sequence set is tested to determine the target pilot sequence. The base station according to claim 19, wherein the processing module is further configured to stipulate the pilot pattern set and/or the pilot data set with the terminal protocol. The base station according to claim 19, wherein the processing module is further configured to set the pilot pattern set and/or the pilot sequence set; The base station further includes a sending module, configured to use the pilot pattern set generated by the processing module And/or the set of pilot sequences is sent to the terminal. The base station according to claim 22, wherein the processing module is specifically configured to monitor a total traffic volume of all terminals in its coverage area; And increasing the number of pilot sequences in the set of pilot sequences to a second threshold or selecting a first target pilot pattern set or in the set of pilot sequences when the total traffic exceeds a first threshold The number of pilot sequences is increased to a second threshold and a first target pilot pattern set is selected, and the number of pilot sequences corresponding to the pilot patterns in the first target pilot pattern set is the second threshold; When the total traffic volume is lower than a third threshold, reducing the number of pilot sequences in the pilot sequence set to a fourth threshold or selecting a second target pilot pattern set or placing the pilot sequence set The number of pilot sequences is reduced to a fourth threshold and a second target pilot pattern set is selected, and the number of pilot sequences corresponding to the pilot patterns in the second target pilot pattern set is the fourth threshold. The base station according to claim 22, wherein the receiving module is further configured to receive log information sent by the terminal, where the log information includes a situation in which the terminal fails to send data; The processing module is specifically configured to increase the number of pilot sequences in the pilot sequence set to a sixth threshold or select a number when the number of times that the log information indicates that the terminal fails to send data exceeds a fifth threshold. a set of three target pilot patterns or increasing a number of pilot sequences in the set of pilot sequences to a sixth threshold and selecting a third set of target pilot patterns, the pilot patterns in the third set of target pilot patterns The number of corresponding pilot sequences is the sixth threshold. The base station according to claim 22, wherein the receiving module is further configured to receive report information sent by a network element of the communication system, where the report information is used to instruct the base station to update the pilot pattern set; The processing module is specifically configured to select a fourth target pilot pattern set according to the report information, where the fourth target pilot pattern set is different from the pilot pattern set selected by other base stations. The base station according to any one of claims 19 to 25, wherein the processing module is further configured to: when determining that the terminal includes multiple transmit antennas, set a transmit mode of the terminal; The sending module is configured to send the transmission mode to the terminal; or, The processing module is further configured to stipulate the transmission mode with the terminal protocol; And the data frame is sent by the terminal to the base station by using the time-frequency resource according to the target pilot pattern in the transmitting mode. The base station according to claim 26, wherein the processing module is specifically configured to monitor a total traffic volume of all terminals in the coverage of the base station; When the total traffic exceeds a first preset value, setting the transmission mode to a multi-antenna multiplexing transmission mode; When the total traffic volume is lower than a second preset value, the transmission mode is set to a single antenna transmission mode. A terminal, comprising: a processing module, configured to acquire a pilot pattern set and a pilot sequence set, where the pilot pattern set includes at least two pilot patterns and/or the pilot data column set includes at least two pilot sequences; Obtaining a target pilot sequence in the pilot sequence set, acquiring a target pilot pattern in the pilot pattern set, and acquiring a time-frequency resource according to the constraint condition according to the target pilot pattern; a sending module, configured to send, by using the time-frequency resource acquired by the processing module, a data frame to the base station according to the target pilot pattern acquired by the processing module, the target data sequence of the service data, and the target pilot A pattern is used by the base station to decode the service data. The terminal according to claim 28, wherein the processing module is further configured to protocol the set of pilot patterns and/or the set of pilot sequences with the base station protocol; or, The terminal further includes a receiving module, configured to receive the pilot pattern set and/or the pilot sequence set sent by the base station. The terminal according to claim 29, wherein the processing module is further configured to start a timer and a counter, where the counter is used to accumulate the number of times the terminal fails to send data; After the timer expires or the cumulative number of counters exceeds a preset number, log information is generated, where the log information is used to indicate that the terminal fails to send data; The sending module is further configured to send the log information generated by the processing module to the base station, where the log information is used by the base station to adjust the pilot sequence set and/or the pilot pattern set . The terminal according to claim 30, wherein the sending module is specifically used Selecting a preamble of a specific format according to the log information, and transmitting the preamble to the base station; or, Sending the data frame to the base station, where the data frame includes the log information. The terminal according to any one of claims 28 to 31, wherein the terminal comprises a plurality of antennas; The processing module is further configured to acquire a transmission mode. The sending module is further configured to send, by using the time-frequency resource, the data frame to the base station in the transmitting mode according to the target pilot pattern. The terminal according to claim 32, wherein the processing module is configured to acquire a first preset threshold, where the preset threshold is used to indicate a size of the sent data; When the data amount is greater than the first preset threshold, selecting a multi-antenna multiplexing mode to send the data frame; When the amount of data is not greater than the first preset threshold, the single antenna mode is selected to transmit the data frame. The terminal according to claim 32, wherein the processing module is configured to acquire a second preset threshold, where the second preset threshold is used to indicate a channel quality of a channel on which the terminal is located. Advantages and disadvantages; When the channel quality is inferior to the second preset threshold, selecting multiple antenna diversity mode to send the data frame; When the channel quality is better than the second preset threshold, the single antenna mode is selected to transmit the data frame.

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