CN104683058A - Radio frame transmitting method and device and base station - Google Patents

Abstract

The present invention provides a wireless frame sending method, device and base station. The method includes: determining a wireless frame, wherein the wireless frame includes: a preamble field, a signaling field, a data field, or further includes an auxiliary information field, the signal The command field carries at least one of the following: the first indication information used to indicate the bandwidth used to send the auxiliary information field and/or the data field, the second indication information used to indicate the modulation technology used in the auxiliary information field and/or the data field Indication information; the wireless frame is sent according to the first indication information and the second indication information. Through the present invention, it is solved that there are multiple different system bandwidths for channelization in the related art, and multiple modulation techniques can be used. The frame structure of the wireless frame cannot realize the normal communication between the sender and the receiver, and then achieve the effect of effectively identifying the frame format of the wireless frame when the system has multiple channels and uses multiple modulation techniques, and realizes wireless communication smoothly.

Description

Wireless frame transmission method, device and base station

technical field

The present invention relates to the communication field, in particular, to a wireless frame sending method, device and base station.

Background technique

In the field of wireless networks, wireless local area networks (WLAN for short) used in unlicensed frequency bands have developed rapidly. However, due to the limited number of low-frequency unlicensed frequency bands, the spectrum is becoming more and more crowded, and user experience is getting worse. There are also unlicensed frequency bands in the millimeter wave band, and the available spectrum is wide. Using the millimeter wave band for short-distance ultra-high-speed wireless communication is an ideal choice. For example, there are multiple wireless communication standards in the 60GHz frequency band, such as IEEE802.11ad, IEEE802.15.3c, etc. In the existing standards, two modulation technologies, single carrier and OFDM, are applied, and multiple sub-bands are divided into the 60GHz frequency band Channel, each sub-channel has a fixed width of 2.16GHz, and the wireless frame structure is also fixed, consisting of 3 parts. Figure 1 is a schematic diagram of the general format of a wireless frame under the 60GHz standard in the related art. As shown in Figure 1, the wireless frame includes 3 parts, including: preamble domain (for signal acquisition, time-frequency domain synchronization, channel estimation, etc.), signaling domain (for decoding subsequent data domain) and data domain (carrying information); if there are multiple different channelization When the system bandwidth and multiple modulation techniques can be used, and different modulation techniques and bandwidths are used in different parts of the same wireless frame, the existing wireless frame structure cannot achieve the above in order for both parties to communicate normally. Normal communication between sender and receiver.

Therefore, there is a problem in the related art that when there are multiple different system bandwidths for channelization and multiple modulation techniques can be used, the existing wireless frame structure cannot realize normal communication between the sender and receiver.

Contents of the invention

The present invention provides a wireless frame sending method, device and base station to at least solve the problem of the existing wireless frame frame structure when there are multiple different system bandwidths for channelization in the related art and multiple modulation techniques can be used. The problem of normal communication between the sender and the sender cannot be realized.

According to one aspect of the present invention, a method for sending a wireless frame is provided, including: determining a wireless frame, wherein the wireless frame includes: a preamble field, a signaling field, a data field, or further includes an auxiliary information field, the The signaling field carries at least one of the following: first indication information used to indicate the bandwidth used to send the auxiliary information field and/or the data field, used to indicate the auxiliary information field and/or the second indication information of the modulation technology adopted by the data field; sending the wireless frame according to the first indication information and the second indication information.

Preferably, the bandwidth used by the auxiliary information field and/or the data field includes at least one of the following: 540MHz, 1080MHz.

Preferably, the modulation technique adopted by the auxiliary information field and/or the data field includes at least one of the following: single carrier modulation technology and multi-carrier modulation technology.

Preferably, when the second indication information is used to indicate the modulation technique adopted by the data field, the signaling field carries third indication information used to indicate the modulation technique of the auxiliary information field.

Preferably, the third indication information is the number of spatial streams and/or space-time streams in the signaling domain.

Preferably, at least two of the first indication information, the second indication information and the third indication information exist in the same indication information field in the signaling field.

Preferably, the second indication information is carried in a preamble field.

Preferably, the bandwidth used for the auxiliary information field and/or the data field, the auxiliary information field and/or the The modulation technique used in the data field is indicated.

According to another aspect of the present invention, a device for sending a wireless frame is provided, including: a determining module configured to determine a wireless frame, wherein the wireless frame includes: a preamble field, a signaling field, a data field, or, further An auxiliary information field is included, and the signaling field carries at least one of the following: first indication information used to indicate the bandwidth used to send the auxiliary information field and/or the data field, used to indicate the auxiliary information The second indication information of the modulation technique adopted by the field and/or the data field; a sending module, configured to send the wireless frame according to the first indication information and the second indication information.

According to still another aspect of the present invention, a base station is provided, including the above wireless frame sending apparatus.

Through the present invention, a radio frame is determined, wherein the radio frame includes: a preamble field, a signaling field, a data field, or further includes an auxiliary information field, and the signaling field carries at least one of the following: Indicating first indication information for sending the bandwidth used for the auxiliary information field and/or the data field, and second indication information for indicating the modulation technique used for the auxiliary information field and/or the data field; The wireless frame is sent according to the first indication information and the second indication information, which solves the problem of the existing wireless frame when there are multiple different system bandwidths for channelization in the related art and multiple modulation techniques can be used. The frame structure cannot realize the normal communication between the sender and the receiver, and then achieve the effect of effectively identifying the frame format of the wireless frame when the system has multiple channels and uses multiple modulation techniques, and realizes the effect of wireless communication smoothly.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of a general format of a wireless frame under the 60GHz standard in the related art;

FIG. 2 is a flow chart of a method for transmitting a wireless frame according to an embodiment of the present invention;

Fig. 3 is a structural block diagram of a wireless frame sending device according to an embodiment of the present invention;

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

Fig. 5 is a schematic diagram of a frame format of a wireless frame under multiple modulation techniques under multi-channelization according to an embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

In this embodiment, a method for transmitting a wireless frame is provided. FIG. 2 is a flowchart of a method for transmitting a wireless frame according to an embodiment of the present invention. As shown in FIG. 2 , the process includes the following steps:

Step S202, determine a wireless frame, wherein the wireless frame includes: a preamble field, a signaling field, a data field, or further includes an auxiliary information field, and the signaling field carries at least one of the following: used to indicate sending auxiliary information First indication information of the bandwidth used by the domain and/or the data domain, and second indication information used to indicate the modulation technique adopted by the auxiliary information domain and/or the data domain;

Step S204, sending a wireless frame according to the first indication information and the second indication information.

Through the above steps, the signaling field indicates the bandwidth and the modulation technology used in the auxiliary information field and data field after the signaling field of the radio frame, which not only solves the problem of multiple channelization problems in related technologies When the system bandwidth is different and multiple modulation techniques can be used, the existing wireless frame structure cannot realize the normal communication between the sender and the receiver, and then achieves effective communication when the system has multiple channels and uses multiple modulation techniques. Identify the frame format of the wireless frame, and realize the effect of wireless communication smoothly.

It should be noted that the bandwidth used by the auxiliary information domain and/or the data domain includes at least one of the following: 540 MHz and 1080 MHz. The modulation technology used in the auxiliary information domain and/or the data domain includes at least one of the following: single carrier modulation technology and multi-carrier modulation technology.

In addition, in the case where the second indication information is only used to indicate the modulation technique adopted by the data field, the signaling indication field carries third indication information used to indicate the modulation technique of the auxiliary information field. Wherein, the third indication information may be the number of spatial streams and/or space-time streams in the signaling indication field.

Preferably, the second indication information may indicate the modulation technology in a numerical manner. The second indication information may also be carried in the preamble field. In addition, at least two of the first indication information, the second indication information, and the third indication information may exist in the same indication information field in the signaling field.

Preferably, the bandwidth used by the auxiliary information field and/or the data field, and the modulation technique used by the auxiliary information field and/or the data field may also be indicated by jointly indicating the first indication information and the second indication information by numerical values.

In this embodiment, a device for sending a wireless frame is also provided, which is used to implement the above embodiments and preferred implementation modes, and what has already been described will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 3 is a structural block diagram of a wireless frame sending device according to an embodiment of the present invention. As shown in Fig. 3, the device includes a determining module 32 and a sending module 34, and the device will be described below.

The determining module 32 is configured to determine a wireless frame, wherein the wireless frame includes: a preamble field, a signaling field, a data field, or further includes an auxiliary information field, wherein the signaling field carries at least one of the following: for indicating Sending the first indication information of the bandwidth used by the auxiliary information field and/or the data field, and the second indication information used to indicate the modulation technique used by the auxiliary information field and/or the data field; the sending module 34 is connected to the above-mentioned determination module 32, configured to send a wireless frame according to the first indication information and the second indication information.

FIG. 4 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 4 , the base station 40 includes the above-mentioned wireless frame sending device 42 .

In the related art, for the application of the 40-50 GHz frequency band, there are sub-channels with two bandwidths for channelization on this frequency band, for example, 540 MHz and 1080 MHz. In the case of coexistence of two channels, a part of a wireless frame to be sent is sent using a 540MHz channelization format, and a part is sent using a 1080MHz channelization format, then the wireless frame frame format needs to contain additional fields to complete time-frequency domain synchronization and automatic Functions such as gain control and channel estimation, that is, a new field is added between the signaling field and the data field of the existing wireless frame format, which is called the auxiliary information field. A schematic diagram of the frame format of the wireless frame under different modulation techniques, as shown in Figure 5, there are many formats of the auxiliary information field, for example, different bandwidths and different modulation techniques used, etc., in an actual wireless communication, the format used There is only one method, which can effectively indicate the format of the auxiliary information field in the wireless frame, and wireless communication can be carried out smoothly.

The following describes the indication information of the auxiliary information field and/or the data field in the radio frame format provided by the embodiment of the present invention.

The radio frame preamble field and the signaling field or the signaling field carry the first indication information and the second indication information, and the first indication information and the second indication information jointly indicate the format of the field carried behind the radio frame signaling field; wherein, the first The indication information is bandwidth information; the bandwidth information is used to indicate the bandwidth information used by all fields behind the signaling field of the physical frame; the bandwidth indication information is carried in the signaling field; it should be noted that the bandwidth indication information can indicate the sub-channelization scheme One or more bandwidth values; preferably, the second indication information is modulation technology information; the modulation technology information is used to indicate the modulation technology used in the data domain behind the signaling domain, or the auxiliary information domain and the data domain; the modulation technology information bears In the preamble field of the radio frame or in the signaling field;

Wherein, the modulation technology information includes at least single carrier modulation technology and OFDM modulation technology;

The specific instructions are illustrated below with examples.

When the bandwidth indication information indicates 540MHz, and the modulation technology information indicates single-carrier modulation technology, only the data field is carried behind the signaling field, and the data field uses single-carrier modulation technology, occupying a bandwidth of 540MHz;

When the bandwidth indication information indicates 1080MHz, and the modulation technique indicates single-carrier modulation technique, the auxiliary information field and data field are carried behind the signaling field, and the auxiliary information field and data field use single-carrier modulation technology, occupying a bandwidth of 1080MHz;

When the modulation technology information indicates OFDM modulation technology, the data domain uses OFDM modulation technology;

When the modulation technology information indicates the OFDM modulation technology, the signaling field further includes a third indication information field, which is used to indicate the modulation technology used in the auxiliary information field when the second indication information indicates the OFDM modulation technology;

Wherein, the third information indication field may multiplex the spatial stream or space-time stream indication field in the signaling domain, and when the spatial stream or space-time stream indication field indicates two or more spatial streams or space-time streams, The auxiliary information domain uses OFDM modulation technology. When the spatial stream or space-time stream indication field indicates 1 spatial stream or space-time stream, the auxiliary information domain uses single-carrier modulation technology;

It should be noted that the above-mentioned first indication information and second indication information may exist in the same indication information field, bearer and signaling domain; the second indication information and the third indication information may exist in the same indication information field , in the bearer and signaling domain; the first indication information, the second indication information and the third indication information may also exist in the same indication information domain, in the bearer and signaling domain.

Through the above embodiments and preferred implementation modes, when there are multiple channelization schemes and multiple modulation techniques in the system, the frame format of the wireless frame can be effectively identified to complete wireless communication.

In the following, the system includes multiple channels and uses various combinations of multiple modulation techniques to illustrate the implementation of the present invention. It should be pointed out that in a wireless system, the channelization scheme includes N subchannels with different bandwidths (N is an integer greater than or equal to 2), and the modulation techniques that the system can use include single-carrier modulation techniques and multi-carrier modulation techniques such as OFDM technology, in the following preferred embodiments, two sub-channelization schemes with different bandwidths are mainly used as examples for description.

Preferred embodiment one

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc. In addition, the preamble domain indicates the modulation technique used in the subsequent auxiliary information domain and data domain by using different preamble sequences. In this preferred embodiment, it indicates the use of single-carrier modulation technology, and the signaling domain carries The bandwidth information used by the subsequent auxiliary information field and data field is 540MHz. In this wireless frame, only the data field is carried behind the signaling field, and the auxiliary information field is not carried. The data field uses a bandwidth of 540MHz.

Preferred embodiment two

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc. In addition, the preamble domain indicates the modulation technique used in the subsequent auxiliary information domain and data domain by using different preamble sequences. In this preferred embodiment, it indicates the use of single-carrier modulation technology, and the signaling domain carries The bandwidth information used by the subsequent auxiliary information field and data field is 1080MHz. In this wireless frame, the auxiliary information field and data field are carried behind the signaling field, both of which use single-carrier modulation technology and occupy a bandwidth of 1080MHz.

Preferred Embodiment Three

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc. In addition, the preamble domain indicates the modulation technique used in the subsequent domain by using different preamble sequences. In this preferred embodiment, it indicates the use of OFDM modulation technology, and the signaling domain carries the subsequent auxiliary information domain and data The bandwidth information used by the field is 1080MHz. In this wireless frame, the auxiliary information field and the data field are carried behind the signaling field, which all use single carrier modulation technology and occupy a bandwidth of 1080MHz.

Preferred Embodiment Four

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc. In addition, the preamble domain indicates the modulation technique used in the subsequent data domain by using different preamble sequences. In this preferred embodiment, it indicates the use of OFDM modulation technology, and the signaling domain carries the subsequent auxiliary information domain and The bandwidth information used in the data domain is 1080MHz. In addition, the signaling domain also carries modulation technology indication information in the auxiliary information domain, which can indicate whether the OFDM modulation technology or the single-carrier modulation technology indicates the modulation technology used in the subsequent auxiliary information domain. In this wireless frame In , the auxiliary information field is carried behind the signaling field, and the modulation technology is used to indicate the modulation technology indication information of the auxiliary information field, occupying a bandwidth of 1080 MHz.

Preferred Embodiment Five

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc. In addition, the preamble domain indicates the modulation technique used in the subsequent data domain by using different preamble sequences. In this preferred embodiment, it indicates the use of OFDM modulation technology, and the signaling domain carries the subsequent auxiliary information domain and The bandwidth information used by the data domain, which is indicated as 1080MHz in this preferred embodiment, in addition, the signaling domain also carries the number of spatial streams or the number of space-time streams indicating the number of spatial streams or space-time streams used by the subsequent data domain. When the number of streams or the number of space-time streams indicates that the data field uses one spatial stream or the number of space-time streams, the auxiliary information domain uses single-carrier modulation; when the number of spatial streams or the number of space-time streams indicates that the data domain uses two or more When the number of spatial streams or the number of space-time streams, the auxiliary information field uses OFDM modulation. Assuming that in this embodiment, the number of spatial streams or the number of space-time streams indication field indicates that the data field uses two space-time streams, then in this radio frame, the auxiliary information field and the data field are carried after the signaling field, and both fields use OFDM modulation technology, occupying 1080MHz bandwidth.

Preferred Embodiment Six

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc., the signaling field carries the bandwidth information used by the subsequent auxiliary information field and the data field, and this embodiment indicates 1080MHz, and the signaling field also carries the modulation used by the subsequent auxiliary information field and the data field The technology indication information may indicate whether the OFDM modulation technology or the single-carrier modulation technology is indicated as single-carrier modulation in this embodiment. In this wireless frame, the auxiliary information domain and the data domain are carried behind the signaling domain, and the two domains use single-carrier modulation technology and occupy a bandwidth of 1080 MHz.

Preferred Embodiment Seven

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc., the signaling field carries the bandwidth information used by the subsequent auxiliary information field and the data field, and this embodiment indicates 1080MHz, and the signaling field also carries the modulation used by the subsequent auxiliary information field and the data field Technology indication information, which can indicate the modulation techniques used in the subsequent auxiliary information domain and data domain through different values. For example, a value of 0 means that both the subsequent auxiliary information domain and data Both the auxiliary information domain and the data domain adopt single-carrier modulation technology, and a value of 2 indicates that the auxiliary information domain adopts single-carrier modulation technology and the data domain adopts OFDM modulation technology. Assuming that the value of this embodiment is 2, in this wireless frame, the signal An auxiliary information field and a data field are carried behind the command field. The auxiliary information field adopts single-carrier modulation technology and the data field adopts OFDM modulation technology, and the two fields occupy a bandwidth of 1080 MHz.

Preferred Embodiment Eight

In a wireless system, there are two channel bandwidths of 540MHz and 1080MHz. The preamble domain and signaling domain of the wireless frame sent by the station use the 540MHz bandwidth, and use the agreed format for transmission. The preamble domain is used for time-frequency domain synchronization , channel estimation, automatic gain control, etc., the signaling domain carries the bandwidth information used by the subsequent auxiliary information domain and the data domain, and the modulation techniques used respectively, which can be indicated by different values, for example, a value of 0 indicates the subsequent auxiliary information Both domain and data domain adopt OFDM modulation technology, and adopt 540MHz bandwidth; a value of 1 indicates that both the subsequent auxiliary information domain and data domain adopt single-carrier modulation technology, and adopt 540MHz bandwidth; a value of 2 indicates that the auxiliary information domain adopts single-carrier Modulation technology and the data domain adopts OFDM modulation technology and a bandwidth of 540MHz; a value of 3 means that both the subsequent auxiliary information domain and data domain adopt OFDM modulation technology and a bandwidth of 1080MHz; a value of 4 indicates that the subsequent auxiliary information domain and data domain Both use single-carrier modulation technology with a bandwidth of 1080MHz; a value of 5 indicates that the auxiliary information domain adopts single-carrier modulation technology while the data domain adopts OFDM modulation technology and uses a bandwidth of 1080MHz; The field adopts single carrier modulation and uses a bandwidth of 540MHz; assuming that the value of this embodiment is 2, in this wireless frame, the auxiliary information field and data field are carried behind the signaling field, the auxiliary information field adopts single carrier modulation technology and the data field adopts OFDM Modulation technique, two domains occupy 540MHz bandwidth.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a radio frames sending method, is characterized in that, comprising:

Determine radio frames, wherein, described radio frames comprises: leading code domain, signaling territory, data field, or, also comprise supplementary territory, described signaling territory carry following one of at least: be used to indicate the first indication information sending the bandwidth that described supplementary territory and/or described data field adopt, the second indication information being used to indicate the modulation technique that described supplementary territory and/or described data field adopt;

Described radio frames is sent according to described first indication information and the second indication information.

2. method according to claim 1, is characterized in that, the bandwidth that described supplementary territory and/or described data field adopt comprise following one of at least:

540MHz、1080MHz。

3. method according to claim 1, is characterized in that, the modulation technique that described supplementary territory and/or described data field adopt comprise following one of at least:

Single carrier modulation technique, multi-carrier modulation technology.

4. method according to claim 1, it is characterized in that, when described second indication information is used to indicate the modulation technique that described data field adopts, described signaling territory carries the 3rd indication information of the modulation technique being used to indicate described supplementary territory.

5. method according to claim 4, is characterized in that, the number of stream when described 3rd indication information is spatial flow and/or sky in described signaling territory.

6. the method according to claim 4 or 5, is characterized in that, at least two in described first indication information, the second indication information, the 3rd indication information are present in the same indication information territory in described signaling territory.

7. method according to any one of claim 1 to 5, is characterized in that, described second indication information is carried on leading code domain.

8. method according to any one of claim 1 to 5, it is characterized in that, the modulation technique that the bandwidth adopting the mode of the first indication information and described second indication information described in numerical value joint instructions to adopt described supplementary territory and/or described data field, described supplementary territory and/or described data field adopt indicates.

9. a radio frames dispensing device, is characterized in that, comprising:

Determination module, for determining radio frames, wherein, described radio frames comprises: leading code domain, signaling territory, data field, or, also comprise supplementary territory, described signaling territory carry following one of at least: be used to indicate the first indication information sending the bandwidth that described supplementary territory and/or described data field adopt, the second indication information being used to indicate the modulation technique that described supplementary territory and/or described data field adopt;

Sending module, for sending described radio frames according to described first indication information and the second indication information.

10. a base station, is characterized in that, comprises device according to claim 9.