CN108419254B - Method for transmitting information in TDMA system, network equipment and user equipment - Google Patents

Method for transmitting information in TDMA system, network equipment and user equipment Download PDF

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CN108419254B
CN108419254B CN201810074591.5A CN201810074591A CN108419254B CN 108419254 B CN108419254 B CN 108419254B CN 201810074591 A CN201810074591 A CN 201810074591A CN 108419254 B CN108419254 B CN 108419254B
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mcs
data
information
channel
transmitting
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CN108419254A (en
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王鑫芯
林敏�
李俊
张琼
李伟丹
黄锦华
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Comba Network Systems Co Ltd
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Comba Telecom Systems China Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The invention discloses a method for transmitting information in an information transmission TDMA system of the TDMA system, network equipment and user equipment, wherein the method comprises the following steps: acquiring a channel statistical result, wherein the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; generating a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information according to the channel statistic result; if the current network equipment is a data sending end, sending data information according to the first MCS, and sending aggregate information of control information and data information according to the second MCS; and if the current network equipment is a data receiving end, the first MCS and the second MCS are issued to the user equipment, so that the user equipment can send the data information according to the first MCS and send the aggregate information of the control information and the data information according to the second MCS. The invention can effectively improve the transmission performance of the control information and ensure the service quality of the control frame.

Description

Method for transmitting information in TDMA system, network equipment and user equipment
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method, a network device, and a user equipment for transmitting information in a TDMA system.
Background
A TDMA (Time division multiple access) system based on WLAN (Wireless Local Area network) is a novel networking mode, and adopts the physical layer technology of WLAN and the upper layer technology of TDMA, and combines the two technologies properly to meet the application of specific scenes.
In a WLAN-based TDMA system, users time-divide the channel resources, and each user occupies a period of time to transmit data. The system adopts a WLAN physical layer mechanism, when data is transmitted between a base station and a user, a leader sequence needs to be arranged in front of each frame of data, the sequence occupies a short period of time, and when the user has a plurality of frames to be transmitted, the time occupied by the leader sequence is multiplied along with the number of the transmitted frames. Frame aggregation techniques are introduced in WLAN systems to aggregate multiple data frames to reduce the time taken by preamble sequences. Meanwhile, when data is received and transmitted, ACK/NACK confirmation information needs to be replied through a BA control frame, when data is continuously received and transmitted between a user and a base station, the BA control frame needs to be frequently transmitted correspondingly, in order to transmit more effective data within the limited channel occupation time distributed to the user by the system, the control information and the data information are transmitted simultaneously in the WLAN in a mode of aggregating the BA and BAR control frames and the data frames, and the time occupied by a preamble sequence is reduced. The WLAN-based TDMA system inherits a frame aggregation technology and supports the aggregation transmission of data frames and data frames so as to save the time of a preamble sequence during data transmission and have more time for effective data transmission.
Link adaptation is an important component of radio resource management, which also plays an important role in WLAN-based TDMA system radio resource management algorithms. AMC (Adaptive Modulation and Coding ) is an important link adaptation technology, and an MCS (Modulation and Coding Scheme, Modulation and Coding strategy) of a link can be adaptively adjusted by adopting an AMC algorithm, so that the change of the link is tracked, and the quality of data transmission is ensured.
In a conventional WLAN system, the MCS used by a user is adaptively selected using measurement data processing of a WLAN physical layer. In a WLAN-based TDMA system, the base station may also make measurements using the WLAN physical layer, obtain measurement data and adjust the MCS accordingly. However, when the control frame and the data frame are aggregated, the measurement of the WLAN physical layer cannot distinguish the data types, and perform measurement and feedback uniformly, the MCS obtained by using the measurement information cannot well adapt to the performance requirement of the control frame, and the performance of data transmission is considered in the prior art more, so that the data can be successfully demodulated. In practice, the demodulation performance requirement of the control information is higher than that of the data information, the subsequent data transmission of a user is affected by the demodulation failure of the control frame, and when the aggregate frame of the control frame and the data frame is transmitted, the performance requirement of the control frame cannot be met by adopting the MCS configuration result of the data frame for transmission.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide a method, a network device, and a user equipment for information transmission in a TDMA system, which can improve the transmission performance of control information and ensure the quality of service of a control frame.
In one aspect of the present invention, a method for transmitting information in a TDMA system is provided, including:
the network equipment acquires a channel statistical result, wherein the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data;
generating a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information according to the channel statistic result;
if the network equipment is a data sending end, sending data information according to the first MCS, and sending aggregate information of control information and data information according to the second MCS;
and if the network equipment is a data receiving end, the first MCS and the second MCS are issued to the user equipment, so that the user equipment can send the data information according to the first MCS and send the aggregation information of the control information and the data information according to the second MCS.
If the network device is a data receiving end, the network device obtaining the channel statistical result includes:
and collecting the channel information, counting the channel information collected within a first preset time length to obtain a channel statistical result, or collecting the channel information until the repeated receiving times of correctly demodulating data by a data receiving end reach a preset threshold value, and counting the collected channel information to obtain a channel statistical result.
If the network device is a data sending end, the network device obtaining a channel statistical result of the user equipment includes:
and receiving a channel statistical result sent by the user equipment.
Wherein the method further comprises:
issuing a preset period to the user equipment so that the user equipment can determine first reporting time of the channel statistical result according to the preset period; the first reporting time is an uplink data transmission time slot which is before a preset period is reached and is closest to the preset period.
Wherein the method further comprises:
issuing a preset threshold value to the user equipment, so that the user equipment determines second reporting time of the channel statistical result according to corresponding statistical time when the repeated receiving times of correct demodulation data in the channel statistical result reach the preset threshold value; and the second reporting time is the uplink data sending time slot which is after the statistical time and is closest to the statistical time.
Wherein the generating a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information according to the channel statistics result comprises:
and calculating a first initial MCS at the current moment by adopting a preset first MCS calculation model according to the channel statistical result, wherein the formula is as follows:
Figure BDA0001559136880000031
according to a preset first target channel Qualityth,dataAdjusting the first initial MCS to obtain a first MCS, wherein the first MCS satisfies the following conditions:
Figure BDA0001559136880000032
and calculating a second initial MCS of the current time by adopting a preset second MCS calculation model according to the channel statistical result, wherein the formula is as follows:
Figure BDA0001559136880000041
according to the preset second target channel Qualityth,controlAdjusting the second initial MCS to obtain a second MCS, wherein the second MCS satisfies the following conditions:
Figure BDA0001559136880000042
wherein MCS1t,initIs the first initial MCS, MCS1t,lastIs a first MCS, MCS2t,initIs a second initial MCS, MCS2t,lastIs a second MCS, f1The mapping relation between the channel quality and the MCS preset for the base station,
Figure BDA0001559136880000043
the inverse relation of the mapping relation between the channel quality and the MCS preset for the base station; f. of2Mapping relation between channel variation and MCS preset for a base station; x is the number ofiFor channel statistics, omega, obtained by the base stationiFor the weights occupied by different types of channel statistic result data, the values of i is 1, …, and n is consistent with the type number of the channel statistic results.
In another aspect of the present invention, there is provided another method for transmitting information in a TDMA system, comprising:
receiving configuration information sent by network equipment, wherein the configuration information is generated by the network equipment according to an obtained channel statistical result; the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; the configuration information comprises a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information;
and transmitting data information according to the first MCS, and transmitting aggregation information of control information and data information according to the second MCS.
In a third aspect of the present invention, a network device is provided, including:
the acquisition module is used for acquiring a channel statistical result, wherein the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data;
the configuration module is used for generating a first MCS used for transmitting data information and a second MCS used for transmitting aggregate information of control information and data information according to the channel statistical result acquired by the acquisition module;
the communication module is used for sending data information according to the first MCS when the current network equipment is a data sending end, and sending aggregate information of control information and data information according to the second MCS; and when the current network equipment is a data receiving end, the first MCS and the second MCS are issued to the user equipment, so that the user equipment can send data information according to the first MCS and send aggregate information of control information and data information according to the second MCS.
When the current network device is a data receiving end, the acquiring module is specifically configured to acquire the channel information, count the channel information acquired in a preset period, and obtain a channel statistical result, or acquire the channel information until the number of repeated receptions of correctly demodulated data by the data receiving end reaches a preset threshold value, and count the acquired channel information to obtain a channel statistical result.
The obtaining module is specifically configured to receive a channel statistic result sent by the user equipment if the current network equipment is a data sending end.
The communication module is further configured to issue a preset period to the user equipment, so that the user equipment determines a first reporting time of the channel statistical result according to the preset period; the first reporting time is an uplink data transmission time slot which is before a preset period is reached and is closest to the preset period.
The communication module is further configured to issue a preset threshold to the user equipment, so that the user equipment determines a second reporting time of the channel statistical result according to a corresponding statistical time when the number of repeated receptions of correct demodulation data in the channel statistical result reaches the preset threshold; and the second reporting time is the uplink data sending time slot which is after the statistical time and is closest to the statistical time.
Wherein the configuration module comprises:
a first calculating unit, configured to calculate a first initial MCS at the current time by using a preset first MCS calculation model according to the channel statistics result, where the formula is as follows:
Figure BDA0001559136880000061
a first adjusting unit for adjusting the first target channel Quality according to a preset first target channel Qualityth,dataAdjusting the first initial MCS to obtain a first MCS, wherein the first MCS satisfies the following conditions:
Figure BDA0001559136880000062
a second calculating unit, configured to calculate a second initial MCS at the current time by using a preset second MCS calculation model according to the channel statistics result, where the formula is as follows:
Figure BDA0001559136880000063
a second adjusting unit for adjusting the second target channel Quality according to the preset second target channel Qualityth,controlFor the second initial MCSAnd line adjustment is carried out to obtain a second MCS, and the second MCS meets the following conditions:
Figure BDA0001559136880000064
wherein MCS1t,initIs the first initial MCS, MCS1t,lastIs a first MCS, MCS2t,initIs a second initial MCS, MCS2t,lastIs a second MCS, f1The mapping relation between the channel quality and the MCS preset for the base station,
Figure BDA0001559136880000065
the inverse relation of the mapping relation between the channel quality and the MCS preset for the base station; f. of2And presetting a mapping relation between the channel variation and the MCS for the base station. x is the number ofiFor channel statistics, omega, obtained by the base stationiFor the weights occupied by different types of channel statistic result data, the values of i is 1, …, and n is consistent with the type number of the channel statistic results.
In a fourth aspect of the present invention, there is provided a user equipment, comprising:
a receiving module, configured to receive configuration information sent by a network device, where the configuration information is generated by the network device according to an obtained channel statistical result; the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; the configuration information comprises a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information;
and the sending module is used for sending the data information according to the first MCS and sending the aggregation information of the control information and the data information according to the second MCS.
According to the method for transmitting information in the TDMA system, the network equipment and the user equipment, provided by the embodiment of the invention, the first MCS and the second MCS are generated according to the channel statistical result, the first MCS is adopted by the sending end when the data frame is sent, the second MCS is adopted when the aggregate frame of the control frame and the data frame is sent, the sending of the aggregate frame of the data frame, the control frame and the data frame is respectively controlled by using different MCSs, and therefore, when the aggregate frame of the control frame and the data frame is sent, the transmission performance of the control information can be effectively improved, and the service quality of the control frame is ensured.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart of a method for transmitting information in a TDMA system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an implementation of the method for transmitting information in a TDMA system when a base station is a receiving end according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation of the method for transmitting information in a TDMA system when a user is a receiving end according to an embodiment of the present invention;
fig. 4 is a flowchart of another method for transmitting information in a TDMA system according to an embodiment of the present invention;
fig. 5 is a block diagram of a network device according to an embodiment of the present invention;
fig. 6 is a block diagram of a user equipment according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Fig. 1 is a flowchart of a method for transmitting information in a TDMA system according to an embodiment of the present invention. Referring to fig. 1, the method for transmitting information in a TDMA system according to the embodiment of the present invention specifically includes the following steps:
s101, the network equipment obtains a channel statistical result, wherein the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correct demodulation data.
In this embodiment, the network device is a base station, and the base station calculates a channel statistic result according to channel information of a receiving end. The receiving end may be a base station or a user equipment. And the receiving terminal maintains the channel information within the preset time closest to the current time according to the preset time, wherein the channel information at least comprises the channel measurement information of the receiving terminal, the demodulation result of the data, the repeated receiving times of the correctly demodulated data and the like. The channel measurement information at the receiving end includes, but is not limited to, RSSI, SNR, and MCS. The demodulation results of the data are divided into successful demodulation and unsuccessful demodulation. After receiving and correctly demodulating data, the receiving end generates ACK confirmation information and feeds the ACK confirmation information back to the sending end through a control frame, the sending end sends new data after receiving the ACK confirmation information, if the sending end does not successfully receive the ACK confirmation information, namely unsuccessfully demodulated data, the sending end repeatedly sends the data for retransmission, the receiving end receives the successfully demodulated data again, and the repeated receiving times of the correctly demodulated data are the retransmission times.
The channel statistical result is a statistical result of channel information, and at least includes information such as a channel measurement result, a data demodulation success rate, and a repeated receiving frequency of correctly demodulated data. Wherein:
channel measurement results: channel measurement mean value during statistics;
data demodulation success rate: counting the proportion of successfully demodulated data in the received data during the period;
number of repeated receptions of correctly demodulated data: the maximum number of repeated receptions of correctly demodulated data during the period is counted.
In this embodiment, the base station acquires the channel statistics result instead of the channel information, so as to reduce the data processing load of the base station, and meanwhile, when the receiving end is a user, the amount of information of the statistics information that the user needs to transmit to the base station is reduced, and more time can be used for transmitting valid data.
S102, generating a first MCS used for transmitting data information and a second MCS used for transmitting aggregation information of control information and data information according to the channel statistic result.
S103, if the current network equipment is a data sending end, sending data information according to the first MCS, and sending aggregate information of control information and data information according to the second MCS.
The aggregation information in this embodiment is information obtained by aggregating control information and data information.
S104, if the current network equipment is a data receiving end, the first MCS and the second MCS are issued to the user equipment, so that the user equipment can send data information according to the first MCS, and send aggregate information of control information and data information according to the second MCS.
The method for transmitting information in the TDMA system provided by the embodiment of the invention generates the first MCS and the second MCS according to the channel statistical result, and enables the sending end to adopt the first MCS when sending the data frame and adopt the second MCS when sending the aggregate frame of the control frame and the data frame, and respectively controls the sending of the aggregate frame of the data frame and the control frame and the data frame by using different MCSs, thereby effectively improving the transmission performance of the control information and ensuring the service quality of the control frame when sending the aggregate frame of the control frame and the data frame.
In addition, when the receiving end carries out channel information statistics, besides channel measurement information statistics, the demodulation result of data and the repeated receiving times of correct demodulation data are also counted, the channel transmission quality can be more comprehensively embodied, the transmission result of control information can be reflected, and the successful demodulation of the control information is better ensured.
In the embodiment of the present invention, if the current network device is a data receiving end, that is, the base station is a data receiving end, and the user equipment is a data transmitting end, the obtaining of the channel statistics result of the user equipment is specifically realized by the following steps: and the base station collects the channel information and counts the channel information collected in a preset period to obtain a channel statistical result, or the base station collects the channel information until the repeated receiving times of the correctly demodulated data of the data receiving end reach a preset threshold value, and counts the collected channel information to obtain the channel statistical result.
In another embodiment of the present invention, if the current network device is a data transmitting end, that is, the user equipment is a data receiving end, and the base station is a data transmitting end, the obtaining of the channel statistics result of the user equipment is specifically implemented by the following steps: and receiving a channel statistical result sent by the user equipment.
In a specific example, the implementation procedure is that a base station issues a preset period to the user equipment, so that the user equipment determines a first reporting time of the channel statistical result according to the preset period; the first reporting time is an uplink data transmission time slot which is before a preset period is reached and is closest to the preset period.
In another specific example, the implementation procedure is that the base station issues a preset threshold to the ue, so that the ue determines a second reporting time of the channel statistics result according to a corresponding statistical time when the number of repeated receptions of correct demodulated data in the channel statistics result reaches the preset threshold; and the second reporting time is the uplink data sending time slot which is after the statistical time and is closest to the statistical time.
In an embodiment, the base station may aggregate the channel statistics of the users based on the active policy and the passive policy.
The active strategy is that the base station presets a preset period, and when the preset period is reached, channel statistical results of active convergence users are based. When the receiving end is a base station, the base station automatically collects the channel statistical result of the receiving end; and when the receiving end is a user, the base station informs the preset period to the user, and the user sends the channel statistical result to the base station at the uplink data sending time slot which is before the preset period and is closest to the preset period.
The passive policy is a preset statistical condition, for example, a threshold of the number of repetitions of correctly demodulating data in a channel statistical result is set, and when the number of repetitions of correctly demodulating data at the receiving end exceeds the preset threshold of the number of repetitions, the receiving end reports the data to the base station. When the receiving end is a base station, the base station triggers the collection of channel statistical results by itself; and when the receiving end is a user, the user sends the statistical result to the base station after meeting the statistical condition and the uplink data sending time slot which is closest to the preset period.
In this embodiment of the present invention, the generating a first MCS used for transmitting data information and a second MCS used for transmitting aggregation information of control information and data information according to the channel statistics result specifically includes the following steps:
the base station generates a first MCS according to the collected channel statistical result, and the specific method is as follows:
base station sets target channel Quality of data information transmissionth,data；
And calculating a first initial MCS at the current moment by adopting a preset first MCS calculation model according to the channel statistical result, wherein the formula is as follows:
Figure BDA0001559136880000111
according to a preset first target channel Qualityth,dataAdjusting the first initial MCS to obtain a first MCS, the secondAn MCS satisfies the following conditions:
Figure BDA0001559136880000112
in this embodiment, the base station adjusts the first initial MCS to obtain a first MCS, i.e. MCS1t,lastSo that
Figure BDA0001559136880000113
And the adjustment is minimal.
The base station generates a second MCS according to the collected channel statistics result, specifically:
base station sets target channel Quality of control information transmissionth,control；
And calculating a second initial MCS of the current time by adopting a preset second MCS calculation model according to the channel statistical result, wherein the formula is as follows:
Figure BDA0001559136880000114
and adjusting the second initial MCS according to a preset second target channel quality to obtain a second MCS, wherein the second MCS meets the following conditions:
Figure BDA0001559136880000121
in this embodiment, the base station adjusts the second initial MCS to obtain a second MCS, MCS2t,lastSo that
Figure BDA0001559136880000122
And the adjustment is minimal.
Wherein MCS1t,initIs the first initial MCS, MCS1t,lastIs a first MCS, MCS2t,initIs a second initial MCS, MCS2t,lastIs a second MCS, f1The mapping relation between the channel quality and the MCS preset for the base station,
Figure BDA0001559136880000123
the inverse relation of the mapping relation between the channel quality and the MCS preset for the base station; f. of2Mapping relation between channel variation and MCS preset for a base station; x is the number ofiFor channel statistics, omega, obtained by the base stationiFor the weights occupied by different types of channel statistic result data, the values of i is 1, …, and n is consistent with the type number of the channel statistic results. n is at least 3. For different target channel qualities, the weight omega of the statistical results of the different types of channelsiDifferent.
Optionally, the statistical result of the channel information at least includes a channel measurement result, a data demodulation success rate, a maximum repeated reception number of correctly demodulated data, x1、x2、x3Respectively corresponding to the channel measurement result, the data demodulation success rate and the repeated receiving times of correctly demodulated data.
Fig. 2 is a flowchart of an implementation of the method for transmitting information in a TDMA system when a base station is a receiving end according to an embodiment of the present invention. Referring to fig. 2, the base station performs channel information statistics and collects channel statistics results of users, which is specifically as follows:
the user equipment is a sending end, the base station is a receiving end, the user equipment sends data to the base station, the base station carries out channel information statistics, and channel statistical results are collected.
In this step, when the user equipment is a transmitting end, the base station informs the user of the first MCS and the second MCS at the latest downlink transmission time slot of the user after generating the first MCS and the second MCS. And the user equipment stores the received data frame, adopts a first MCS when sending the data frame, and adopts a second MCS when sending the aggregate frame of the control frame and the data frame.
Fig. 3 is a flowchart of an implementation of the method for transmitting information in a TDMA system when a user is a receiving end according to an embodiment of the present invention. Referring to fig. 3, the ue performs channel information statistics and sends the channel statistics result to the base station, and the base station collects the channel statistics result of the user. In this step, the base station is a sending end, sends data to the user equipment, and the user equipment performs channel information statistics and sends the channel statistics result which is well counted to the base station, and the base station performs channel statistics result collection. In this embodiment, the base station is responsible for collecting the channel statistics result, and the user equipment performs channel information statistics, thereby reducing the data processing load of the base station, and meanwhile, when the receiving end is a user, reducing the amount of information of the statistics information that the user needs to transmit to the base station, and allowing more time for transmitting valid data.
The method for transmitting information in the TDMA system provided by the embodiment of the invention comprises the steps that a sending end adopts a first MCS when sending a data frame, wherein the first MCS is an MCS meeting the quality of a target channel for sending data information; when the control frame and the data frame are aggregated and sent, the second MCS is the MCS meeting the quality of the control information sending target channel. When the receiving end carries out channel information statistics, besides channel measurement information statistics, the method also counts the demodulation result of data and the repeated receiving times of correct demodulation data, can more comprehensively express the channel transmission quality, can reflect the transmission result of the control information, and can better accord with the link performance of the control information based on the obtained MCS, thereby better ensuring the successful demodulation of the control information.
Fig. 4 is a flowchart of another method for transmitting information in a TDMA system according to an embodiment of the present invention. Referring to fig. 4, the method for transmitting information in a TDMA system according to the embodiment of the present invention specifically includes the following steps:
s201, receiving configuration information sent by network equipment, wherein the configuration information is generated by the network equipment according to an obtained channel statistical result; the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; the configuration information includes a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information.
In this embodiment, for example, the aggregation information is information obtained by aggregating control information and data information.
S202, sending data information according to the first MCS, and sending aggregate information of control information and data information according to the second MCS.
The embodiment of the invention is suitable for the application scene that the base station is a data receiving end and the user equipment is a data sending end, the base station collects the channel information and counts the collected channel information in a preset period to obtain a channel statistical result, or the base station collects the channel information until the repeated receiving times of the data receiving end for correctly demodulating the data reach a preset threshold value, and counts the collected channel information to obtain the channel statistical result. And generating a first MCS used for transmitting data information and a second MCS used for transmitting aggregation information of control information and data information according to the acquired channel statistical result, and sending the first MCS and the second MCS to the user equipment, wherein the user equipment sends the data information according to the first MCS after receiving the configuration information sent by the base station, and sends the aggregation information of the control information and the data information according to the second MCS.
According to the method for transmitting the information in the TDMA system, the user equipment adopts the first MCS when transmitting the data frame and adopts the second MCS when transmitting the aggregate frame of the control frame and the data frame according to the configuration information transmitted by the base station, and the transmission of the aggregate frame of the data frame, the control frame and the data frame is respectively controlled by using different MCSs, so that the transmission performance of the control information can be effectively improved when transmitting the aggregate frame of the control frame and the data frame, and the service quality of the control frame is ensured.
For simplicity of explanation, the method embodiments are described as a series of acts or combinations, but those skilled in the art will appreciate that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently with other steps in accordance with the embodiments of the invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Fig. 5 is a structural block diagram of a network device according to an embodiment of the present invention, and referring to fig. 5, the network device specifically includes an obtaining module 301, a configuring module 302, and a communication module 303, where:
an obtaining module 301, configured to obtain a channel statistical result, where the channel statistical result includes a channel measurement result, a data demodulation success rate, and a number of repeated receptions of correctly demodulated data;
a configuration module 302, configured to generate a first MCS used for transmitting data information and a second MCS used for transmitting aggregation information of control information and data information according to the channel statistics result obtained by the obtaining module;
a communication module 303, configured to send data information according to the first MCS when the current network device is a data sending end, and send aggregation information of control information and data information according to the second MCS;
the communication module 303 is further configured to, when the current network device is a data receiving end, send the first MCS and the second MCS to the user equipment, so that the user equipment sends data information according to the first MCS, and sends aggregation information of control information and data information according to the second MCS.
In this embodiment of the present invention, when the current network device is a data receiving end, the obtaining module 301 is specifically configured to collect the channel information, count the channel information collected in a preset period, and obtain a channel statistical result, or collect the channel information until the number of times that the data receiving end correctly demodulates data reaches a preset threshold, and count the collected channel information, and obtain a channel statistical result.
In this embodiment of the present invention, if the current network device is a data sending end, the obtaining module 301 is specifically configured to receive a channel statistic result sent by the user equipment.
Further, in a specific example, the communication module 303 is further configured to issue a preset period to the ue, so that the ue determines a first reporting time of the channel statistics result according to the preset period; the first reporting time is an uplink data transmission time slot which is before a preset period is reached and is closest to the preset period.
Further, in another specific example, the communication module 303 is further configured to issue a preset threshold to the ue, so that the ue determines a second reporting time of the channel statistic result according to a corresponding statistic time when the number of repeated receptions of correct demodulated data in the channel statistic result reaches the preset threshold; and the second reporting time is the uplink data sending time slot which is after the statistical time and is closest to the statistical time.
In this embodiment of the present invention, the configuration module 302 specifically includes a first calculating unit, a first adjusting unit, a second calculating unit, and a second adjusting unit, where:
a first calculating unit, configured to calculate a first initial MCS at the current time by using a preset first MCS calculation model according to the channel statistics result, where the formula is as follows:
Figure BDA0001559136880000161
a first adjusting unit for adjusting the first target channel Quality according to a preset first target channel Qualityth,dataAdjusting the first initial MCS to obtain a first MCS, wherein the first MCS satisfies the following conditions:
Figure BDA0001559136880000162
a second calculating unit, configured to calculate a second initial MCS at the current time by using a preset second MCS calculation model according to the channel statistics result, where the formula is as follows:
Figure BDA0001559136880000163
a second adjusting unit for adjusting the second target channel Quality according to the preset second target channel Qualityth,controlAdjusting the second initial MCS to obtain a second MCS, wherein the second MCS satisfies the following conditions:
Figure BDA0001559136880000164
wherein MCS1t,initIs the first initial MCS, MCS1t,lastIs a first MCS, MCS2t,initIs a second initial MCS, MCS2t,lastIs a second MCS, f1The mapping relation between the channel quality and the MCS preset for the base station,
Figure BDA0001559136880000165
the inverse relation of the mapping relation between the channel quality and the MCS preset for the base station; f. of2And presetting a mapping relation between the channel variation and the MCS for the base station. x is the number ofiFor channel statistics, omega, obtained by the base stationiFor the weights occupied by different types of channel statistic result data, the values of i is 1, …, and n is consistent with the type number of the channel statistic results. n is at least 3. For different target channel qualities, the weight omega of the statistical results of the different types of channelsiDifferent.
Optionally, the statistical result of the channel information at least includes a channel measurement result, a data demodulation success rate, a maximum repeated reception number of correctly demodulated data, x1、x2、x3Respectively corresponding to the channel measurement result, the data demodulation success rate and the repeated receiving times of correctly demodulated data.
Fig. 6 is a structural block diagram of a user equipment according to an embodiment of the present invention, and referring to fig. 6, the user equipment specifically includes a receiving module 401 and a sending module 402, where:
a receiving module 401, configured to receive configuration information sent by a network device, where the configuration information is generated by the network device according to an obtained channel statistic result; the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; the configuration information comprises a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information;
a sending module 402, configured to send data information according to the first MCS, and send aggregation information of control information and data information according to the second MCS.
For the apparatus embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Compared with the prior art, the method for transmitting information in the TDMA system, the network equipment and the user equipment provided by the embodiment of the invention have the following advantages and beneficial effects:
in the embodiment of the invention, the network equipment generates the first MCS and the second MCS according to the channel statistical result, and enables the sending end to adopt the first MCS when sending the data frame and adopt the second MCS when sending the aggregate frame of the control frame and the data frame, and respectively controls the sending of the aggregate frame of the data frame, the control frame and the data frame by using different MCSs, thereby effectively improving the transmission performance of control information and ensuring the service quality of the control frame when sending the aggregate frame of the control frame and the data frame.
In the embodiments of the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the described unit or division of units is only one division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical or other form.
The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be an independent physical module. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device, such as a personal computer, a server, or a network device, or a processor (processor) to execute all or part of the steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a Universal Serial Bus flash drive (usb flash drive), a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.
Those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (13)

1. A method for transmitting information in a TDMA system, comprising:
the network equipment acquires a channel statistical result, wherein the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data;
generating a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information according to the channel statistic result;
if the network equipment is a data sending end, sending data information according to the first MCS, and sending aggregate information of control information and data information according to the second MCS;
and if the network equipment is a data receiving end, issuing the first MCS and the second MCS to user equipment so that the user equipment can send data information according to the first MCS and send aggregate information of control information and data information according to the second MCS.
2. The method of claim 1, wherein if the network device is a data receiving end, the network device obtaining the channel statistics result comprises:
collecting channel information, and counting the channel information collected in a preset period to obtain a channel statistical result, or collecting the channel information until the repeated receiving times of correctly demodulating data by a data receiving end reaches a preset threshold value, and counting the collected channel information to obtain a channel statistical result.
3. The method of claim 1, wherein if the network device is a data sender, the network device obtaining the channel statistics result comprises:
and receiving a channel statistical result sent by the user equipment.
4. The method of claim 3, further comprising:
issuing a preset period to the user equipment so that the user equipment can determine first reporting time of the channel statistical result according to the preset period; the first reporting time is an uplink data transmission time slot which is before a preset period is reached and is closest to the preset period.
5. The method of claim 3, further comprising:
issuing a preset threshold value to the user equipment, so that the user equipment determines second reporting time of the channel statistical result according to corresponding statistical time when the repeated receiving times of correct demodulation data in the channel statistical result reach the preset threshold value; and the second reporting time is the uplink data sending time slot which is after the statistical time and is closest to the statistical time.
6. The method of claim 1, wherein generating a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information according to the channel statistics comprises:
and calculating a first initial MCS at the current moment by adopting a preset first MCS calculation model according to the channel statistical result, wherein the formula is as follows:
Figure FDA0002782625290000021
according to a preset first target channel Qualityth,dataAdjusting the first initial MCS to obtain a first MCS, wherein the first MCS satisfies the following conditions:
f1 -1(MCS1t,last)≥Qualityth,data；
and calculating a second initial MCS of the current time by adopting a preset second MCS calculation model according to the channel statistical result, wherein the formula is as follows:
Figure FDA0002782625290000022
according to the preset second target channel Qualityth,controlTo the second beginningAdjusting the initial MCS to obtain a second MCS, wherein the second MCS satisfies the following conditions:
f1 -1(MCS2t,last)≥Qualityth,control；
wherein MCS1t,initIs the first initial MCS, MCS1t,lastIs a first MCS, MCS2t,initIs a second initial MCS, MCS2t,lastIs a second MCS, f1Mapping relation between channel quality and MCS preset for base station, f1 -1The inverse relation of the mapping relation between the channel quality and the MCS preset for the base station; f. of2Mapping relation between channel variation and MCS preset for a base station; x is the number ofiFor channel statistics, omega, obtained by the base stationiThe values of i ═ 1, …, n, n are consistent with the type number of the channel statistical results, x is the weight occupied by the channel statistical result data of different typesi,tFor the channel statistics, x, obtained by the base station at the current time ti,t-1And obtaining a channel statistical result at the t-1 moment by the base station.
7. A method for transmitting information in a TDMA system, comprising:
receiving configuration information sent by network equipment, wherein the configuration information is generated by the network equipment according to an obtained channel statistical result; the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; the configuration information comprises a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information;
and transmitting data information according to the first MCS, and transmitting aggregation information of control information and data information according to the second MCS.
8. A network device, comprising:
the acquisition module is used for acquiring a channel statistical result, wherein the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data;
the configuration module is used for generating a first MCS used for transmitting data information and a second MCS used for transmitting aggregate information of control information and data information according to the channel statistical result acquired by the acquisition module;
the communication module is used for sending data information according to the first MCS when the current network equipment is a data sending end, and sending aggregate information of control information and data information according to the second MCS; and when the current network equipment is a data receiving end, the first MCS and the second MCS are issued to user equipment, so that the user equipment can send data information according to the first MCS, and send aggregate information of control information and data information according to the second MCS.
9. The network device according to claim 8, wherein when the current network device is a data receiving end, the obtaining module is specifically configured to collect channel information, count the channel information collected in a preset period, and obtain a channel statistical result, or collect the channel information until a number of times of repeated reception of correctly demodulated data by the data receiving end reaches a preset threshold, and count the collected channel information, and obtain a channel statistical result.
10. The network device according to claim 8, wherein if the current network device is a data transmitting end, the obtaining module is specifically configured to receive a channel statistic result transmitted by the user equipment.
11. The network device according to claim 10, wherein the communication module is further configured to issue a preset period to the ue, so that the ue determines a first reporting time of the channel statistics result according to the preset period; the first reporting time is an uplink data transmission time slot which is before a preset period is reached and is closest to the preset period.
12. The network device according to claim 10, wherein the communication module is further configured to issue a preset threshold to the ue, so that the ue determines a second reporting time of the channel statistics result according to a corresponding statistical time when the number of repeated receptions of correct demodulation data in the channel statistics result reaches the preset threshold; and the second reporting time is the uplink data sending time slot which is after the statistical time and is closest to the statistical time.
13. A user device, comprising:
a receiving module, configured to receive configuration information sent by a network device, where the configuration information is generated by the network device according to an obtained channel statistical result; the channel statistical result comprises a channel measurement result, a data demodulation success rate and repeated receiving times of correctly demodulated data; the configuration information comprises a first MCS for transmitting data information and a second MCS for transmitting aggregation information of control information and data information;
and the sending module is used for sending the data information according to the first MCS and sending the aggregation information of the control information and the data information according to the second MCS.
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