CN107040332B - Baseband resource fusion method, base station and terminal between networks of different standards - Google Patents

Abstract

The invention discloses a baseband resource fusion method between networks of different standards. The method includes the following steps: coding the baseband data in the coding mode of the first network, and then modulating the baseband data in the modulation mode of the second network. The invention also discloses a corresponding base station and a terminal. In the case of co-site/shared equipment or shared baseband resource pool, the present invention changes the corresponding relationship between channel coding/decoding and modulation/demodulation in each network, so that it can be implemented according to factors such as specific network status/service type. Dynamic matching, thereby improving the system performance of the network and significantly improving the transmission performance.

Description

Baseband resource fusion method, base station and terminal between networks of different standards

technical field

The invention relates to a baseband resource fusion method between networks of different standards, and also relates to a corresponding base station and a terminal, and belongs to the technical field of wireless communication.

Background technique

In recent years, WLAN has gradually developed into a convergence object of mobile cellular networks due to its excellent data offload capability. Therefore, more and more base stations simultaneously support two wireless network standards, LTE/LTE-A and WLAN, that is, a co-device of LTE/LTE-A and WLAN.

On the other hand, with the development of transport network technology and the rise of cloud computing, the C-RAN network architecture based on centralized collaboration/cloud computing has increasingly become one of the practical choices of mobile operators. Under this network deployment architecture, the physical layer processing units (Base-Band Unit, BBU) of multiple radio access technologies (Radio Access Technology, abbreviated as RAT) are formed in the same infrastructure/data center. Resource Pool (BBU-Pool). As shown in Figure 1, regardless of whether LTE/LTE-A and WLAN share a common device or a common resource pool, this makes it possible to share the baseband processing resources of different radio access technologies among inter-RATs.

Radio Latency is one of the important performance indicators for evaluating various wireless communication technologies. The general definition of air interface delay refers to the average time between when the transmitter sends data over the air interface to when it receives the MAC layer acknowledgment returned by the receiver. In this process, actions in both the downward and upward directions are included, so this duration is also called RTT (Round Trip Time). Different wireless access technologies have different air interface delay performance due to their different design goals and design requirements at the beginning, and this difference can sometimes become impossible to ignore in certain scenarios. Table 1 below shows the comparison of the air interface delay between the two wireless access technologies, LTE/LTE-A and WLAN. As can be seen from the table, in the comparison scenarios in the table, the air interface delay performance of WLAN is better than that of LTE/LTE-A.

Table 1 Comparison of air interface delay between LTE/LTE-A and WLAN

As two channel coding technologies, Turbo Code and LDPC (Low Density Parity Check Code) are applied in LTE/LTE-A and IEEE 802.11n&ac WLAN respectively. LTE/LTE-A uses IR-HARQ (Incremental Redundancy-HybridARQ) technology that combines FEC and ARQ (Automatic Repeat reQuest) for unicast services to make full use of the performance gains brought by high coding rates and achieve hidden Wireless channel adaptation in the sense of nature. In terms of the ease of implementation and the performance effect of IR-HARQ, Turbo Code has obvious advantages compared with LDPC.

At present, the integration between LTE/LTE-A and WLAN mainly focuses on non-co-sited and non-ideal backhaul scenarios (non-collocated & non-ideal backhaul). In this scenario, the integration of the two can only be data Convergence in the sense of link layer (layer 2) or radio resource control layer (layer 3), such as LWA (LTE-WLAN Aggregation) based on Dual-Connectivity and LWI (RAN level LTE) based on cooperative management of radio resources -WLANinterworking). Therefore, the current technical discussions are limited to the data link layer above the physical layer, without involving the physical baseband layer. Moreover, for the scenario of co-site deployment and ideal backhaul, relevant standardization organizations have not focused on discussions.

SUMMARY OF THE INVENTION

The primary technical problem to be solved by the present invention is to provide a baseband resource fusion method between networks of different standards.

Another technical problem to be solved by the present invention is to provide a base station for baseband resource fusion between networks of different standards.

Another technical problem to be solved by the present invention is to provide a terminal for baseband resource fusion between networks of different standards.

In order to realize the above-mentioned purpose of the invention, the present invention adopts the following technical scheme:

A baseband resource fusion method between networks of different standards, the network comprising a base station that can work on a first network and a second network at the same time, comprising the following steps:

encoding the baseband data in the encoding manner of the first network,

The modulation is performed in the modulation mode of the second network.

Preferably, the modulation is performed in the modulation mode of the second network, and the HARQ information is encapsulated into the frame header.

Preferably, the base station includes a first network MAC entity for the first network and a second network MAC entity for the second network,

determining the MCS between the first network MAC entity and the second network MAC entity;

the second network MAC entity notifies a second network modulation unit for the second network to modulate the second network;

The second network modulation unit encapsulates the HARQ information into the frame header and sends it.

Preferably, the HARQ information includes at least a subcarrier indication of the first network.

Preferably, the HARQ information further includes at least the HARQ process ID of the first network.

Preferably, for the HT MF frame structure, the HARQ information is after the HT-LTF field of the frame header; for the VHT MF frame structure, the HARQ information is after the VHT-SIG-B field of the frame header .

Preferably, the baseband resource fusion method further includes the following steps: at the receiving end, according to the HARQ information, perform demodulation in the demodulation mode of the second network, and then perform the demodulation in the decoding mode of the first network. decoding.

Preferably, during demodulation, according to the subcarrier indication of the first network in the HARQ information, after demodulation, decoding is performed in a decoding manner of the first network.

A base station for baseband resource fusion between networks of different standards, the network includes a base station that can work on a first network and a second network at the same time; wherein,

the base station comprises a channel encoding/decoding unit for the first network, and a modulation/demodulation unit for the second network,

the channel coding unit for the first network, for coding baseband data,

The modulation unit for the second network is configured to perform modulation in the modulation mode of the second network.

Preferably, the modulation unit of the second network encapsulates the HARQ information into the frame header.

Preferably, the base station further includes a coded bit sequence transmission interface for interaction between the channel coding unit and the modulation unit.

Preferably, the channel coding unit directly imports the coded bit sequence into the modulation unit through the coded bit sequence transmission interface.

A terminal for baseband resource fusion between networks of different standards, comprising a demodulation unit for the second network and a decoding unit for the first network,

The demodulation unit performs demodulation in the demodulation mode of the second network, and then sends it to the decoding unit;

The decoding unit performs decoding in a decoding manner of the first network.

Preferably, the base station further includes a demodulation soft information sequence transmission interface for interaction between the demodulation unit and the decoding unit.

Preferably, the demodulated soft information sequence transmission interface inputs the demodulated soft information sequence demodulated according to the second network to the decoding unit of the first network.

In the case of co-site/shared equipment or shared baseband resource pool, the present invention changes the corresponding relationship between channel coding/decoding and modulation/demodulation in each network, so that it can be implemented according to factors such as specific network status/service type. Dynamic matching, thereby improving the system performance of the network and significantly improving the transmission performance.

Description of drawings

FIG. 1 is a schematic diagram of resource sharing in the case where an LTE/LTE-A base station and a WLAN base station co-site;

2 is a schematic diagram of a data stream processing path in the present invention;

3 is a schematic flowchart of the first embodiment of the present invention;

4 is a schematic structural diagram of a transmitting end in the present invention;

5 is a schematic structural diagram of a receiving end in the present invention;

6 is a schematic flowchart of the second embodiment of the present invention;

Fig. 7 is the MF frame format diagram of HT (high throughput) in the IEEE 802.11 protocol;

FIG. 8 is a schematic diagram of the bit structure of the HARQ-Info subfield in the MF frame shown in FIG. 7;

FIG. 9 is a schematic diagram of the addition position of the HARQ-Info subfield in the MF frame shown in FIG. 7;

Fig. 10 is the MF frame format diagram of VHT (very high throughput) in the IEEE 802.11 protocol;

11 is a schematic diagram of the bit structure of the HARQ-Info subfield in the MF frame shown in FIG. 10;

FIG. 12 is a schematic diagram of the addition position of the HARQ-Info subfield in the MF frame shown in FIG. 10 .

Detailed ways

The technical content of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

In the embodiments of the present invention, LTE/LTE-A is used as an example of the first network and WLAN is used as an example of the second network for description. Those skilled in the art can understand that the present invention is also applicable to baseband resource sharing of other different networks.

To realize the sharing of baseband resources of different wireless network standards, the key is to release the coupling relationship between channel encoding/decoding and modulation/demodulation, that is, the "M" in MCS (Modulation and Coding Scheme, modulation and coding strategy). Modulation) and "C" (Channel Coding) can respectively come from the baseband processing components of different wireless network standards.

Specifically, in the case of co-site/co-device or shared baseband resource pool, for the physical layer in each radio access technology, its channel coding/decoding (Channel Coding/De-coding) and modulation/demodulation (Modulation/demodulation) /De-modulation) is no longer limited to the corresponding relationship defined by the respective protocols, but can be dynamically matched according to specific network status/service type and other factors, for example, when certain conditions are met, the channel of wireless network standard 1 The encoding/decoding unit can cooperate with the modulation/demodulation unit of the wireless network standard 2 to process some baseband data, so as to better improve the system performance of the network.

In different embodiments of the present invention, the base station is co-located for LTE/LTE-A and WLAN, or its physical baseband resources may form a resource pool (BBU Pool) in a shared sense; the user equipment (UE for short) as a terminal also It has the ability to work in LTE/LTE-A and WLAN at the same time.

In addition, in different embodiments of the present invention, for the unicast data service, a new type of MCS implementation that realizes seamless sharing of LTE/LTE-A and WLAN physical layer resources is adopted. As shown by the dotted line in Figure 2, in the data path of the LTE/LTE-A unicast service after the fusion of LTE/LTE-A and WLAN physical layer baseband resources, the modulation/demodulation unit comes from the WLAN, and the channel encoding/decoding Units are from LTE/LTE-A.

<First Embodiment>

In this embodiment, the MAC on the LTE side determines and informs the WLAN side to use the baseband resource fusion method between networks of different standards of the present invention.

With reference to FIG. 3 , FIG. 4 , and FIG. 5 , the method for baseband resource fusion between different networks (for example, LTE/LTE-A and WLAN) provided by an embodiment of the present invention includes the following steps:

S1: Determine Modulation Coding Mode (MCS)

The MAC entity on the LTE/LTE-A side selects a modulation and coding mode (MCS) based on Turbo Code according to the WLAN channel state reported by the UE, and then informs the MAC entity on the WLAN side of the corresponding modulation parameters through interface 1 in FIG. 3 . Specifically, the base station LTE MAC entity sends the modulation and coding mode (MCS) value to the WLAN MAC entity through interface 1 according to the carrier frequency where the WLAN is located and the quality of the wireless channel, and when the FEC is Turbo. Different MCS values correspond to different modulation and coding modes and have different rates.

Whether to use WLAN resources is negotiated between the base station LTE MAC entity and the WLAN MAC entity. According to its own measurement data and/or the WLAN channel measurement data reported by the terminal UE, and in combination with the pre-customized service routing policy (trafficrouting policy), the base station decides to route a currently ongoing unicast service bearer (unicast bearer) to the same device or resource. The WLAN modulation unit in the pool continues to use the Turbo coding unit of the LTE/LTE-A protocol stack in order to maintain the HARQ performance.

If the WLAN resource needs to be used, the WLAN MAC entity notifies the WLAN modulation unit through the interface (interface 2 in FIG. 3 ) to modulate the data of the terminal.

If WLAN resources are not required, only Turbo coding on the LTE side is performed, the WLAN MAC entity does not notify the WLAN modulation unit, and the LTE MAC entity informs the LTE Turbo coding module through interface 3.

S2: The MAC entity on the LTE side of the base station notifies the LTE coding unit, and at the same time sends HARQ information to the MAC on the WLAN side

The LTE MAC entity informs the LTE Turbo coding unit, which is sent to the WLAN modulation unit instead of the LTE modulation unit after coding.

The LTE MAC-scheduler needs to transmit the HARQ information to the WLAN MAC-scheduler, so as to encapsulate the information into the signaling control information in the frame header of the PLCP (Physical Layer Convergence Procedure) on the WLAN side. The PLCP frame structure on the WLAN side will be described in detail later.

The MAC entity on the LTE/LTE-A side transmits the HARQ information corresponding to this transmission to the WLAN MAC through interface 1 in FIG. 3, and the specific information includes but is not limited to the selected LTE/LTE-A component carrier index (component carrier frequency). index), HARQ process ID (HARQ process ID), new data indicator (New Data Indicator), redundancy version (Redundancy Version). After receiving, the WLAN MAC entity transmits the information to its own PLCP layer through interface 2 in FIG. 3, and PLCP further encapsulates the information into its own frame header (PLCP Header), that is, the SIGNAL part of PLCP.

These information are mainly used by the receiving end of the terminal side, that is, after the WLAN demodulation unit on the terminal side completes the demodulation, the soft-bits (soft-bits) are routed to the buffer in the corresponding LTE channel decoding unit according to the information. )middle.

S3: Encoding on the LTE side of the base station

The LTE turbo coding unit sends the coding information to the WLAN modulation unit through interface A after turbo coding according to the notification of the LTE side MAC.

The codeword output by the LTE turbo encoder can be regarded as the input load of the WLAN modulation link. The modulation of the WLAN and the subsequent multi-antenna processing (if there are multiple antennas) are still only controlled by the WLAN MAC-scheduler and have no direct relationship with LTE.

S4: The base station WLAN side modulates and sends

The WLAN modulation unit receives the MCS value and HARQ information sent by the WLAN side MAC through the interface 2, and the coding information sent by the LTE Turbo coding unit, and performs modulation. After the data is modulated on the WLAN side and processed by multi-antenna mapping (if there are multiple antennas), the wireless medium access right is obtained and sent in a manner that complies with WLAN CSMA/CA.

S5: The terminal WLAN demodulation unit performs WLAN demodulation

The receiving end on the terminal side receives the WLAN PPDU, and the WLAN demodulation unit routes the soft bit data after WLAN demodulation to the HARQ buffer on its own LTE/LTE-A protocol stack side according to the HARQ information in the PLCP Header, and transmits it through the interface B is sent to the LTE decoding unit

If it is not the new data transmitted initially, then Turbo decoding is performed after soft-combine.

S6: The terminal decoding unit performs decoding

The LTE Turbo decoding unit of the terminal performs turbo decoding on the soft bit data demodulated by the WLAN, and notifies the LTE/LTE-A MAC entity of the local side of the decoded result through the interface 4 in FIG. 3 .

S7: The terminal LTE MAC entity performs decoding verification

The terminal LTE/LTE-A MAC entity forwards the decoding check result to the WLAN MAC entity through the interface 5 in FIG. 3 . If the result is success, the WLAN MAC controls the PLCP to generate and send the corresponding ACK frame through the interface 6 in FIG. 3; if the result is failure, no frame is generated.

In this embodiment, the ACK is sent through the WLAN. This is because in the LTE protocol, the ACK and the data must satisfy a strict timing relationship, and the data is transmitted through the air interface of the WLAN. Therefore, this timing relationship is difficult to guarantee. Therefore, in this embodiment, the ACK needs to be transmitted by the WLAN side. Generate and send. Those of ordinary skill in the art can understand that if it is not necessary to satisfy the foregoing timing relationship, the ACK may also be sent by the LTE MAC entity.

S8: If the base station side WLAN receives the ACK frame, it means that the data transmission is successful; if it does not receive the ACK frame, it means that the data transmission fails; whether it succeeds or fails, it sends the data to the LTE/LTE-A MAC entity through interface 1 in Figure 3. Indicates the result of this data transmission.

The following describes the specific structures of the base station and the terminal in the embodiment of the present invention with reference to FIG. 2 to FIG. 5 .

The transmitter in the embodiment of the present invention is shown as a base station in the drawings, and includes at least two transmission interfaces for mutual communication between the LTE transmission system and the WLAN transmission system. The transmission interface includes a transmission control information transfer interface (interface 1) and a coded bit sequence transmission interface (interface A). The transmission control information interface is used to transmit MCS selection and HARQ related information to generate the WLAN information header; and the encoded bit sequence transmission interface transmits the encoded bit sequence.

When there is a coordinated transmission between the two systems, for example, the LTE MAC PDU part is scheduled to be transmitted on the WLAN system. On the one hand, the WLAN determines the MCS corresponding to the PDU according to its channel state and notifies the LTE transmission system. The LTE transmission system The PDU information including the HARQ information is transmitted to the WLAN MAC through the transmission control information interface; on the other hand, in the LTE transmission system, the PDU uses the bit sequence encoded by the LTE Turbo encoder, and is directly imported into the WLAN system through the encoded bit sequence transmission interface. The modulation and MIMO (Multiple-Input Multiple-Output) mapping part, and finally become radio frequency signal transmission.

The receiving end in the embodiment of the present invention is shown as a terminal in the drawings, and includes at least two transmission interfaces for mutual communication between the LTE receiving system and the WLAN receiving system. The aforementioned transmission interfaces include a reception control information transfer interface (interface 5) and a demodulation soft information sequence transmission interface (interface B). The receiving control information transmission interface is used to transmit the CRC judgment result of the current transmission and the HARQ related information of the PDU; and the demodulation soft information sequence transmission interface is used to transmit the demodulation soft information.

When there is a coordinated transmission between the two systems, for example, when the LTE MAC PDU is partially scheduled to the WLAN system for transmission and reception, the WLAN receiving system receives the radio frequency signal, performs MIMO detection and demodulation, and obtains demodulated soft information , and input the demodulated soft information sequence into the soft information resource buffer of the LTE receiving system through the demodulated soft information interface for HARQ combining and Turbo decoding; on the other hand, the WLAN receiving system demodulates the WLAN information header to obtain the MCS of the PDU information and control information such as HARQ, and transmit them to the LTE receiving system through the receiving control information transfer interface, so as to perform retransmission soft combining and decoding in the LTE receiving system.

It can be understood that the transmitting end may be either a base station or a terminal, and the receiving end may be either a terminal or a base station.

<Second Embodiment>

As shown in FIG. 6 , in this embodiment, the MAC entity on the WLAN side of the base station determines and informs the LTE side to adopt the method for integrating baseband resources between networks of different standards of the present invention.

Specifically, the MAC entity on the WLAN side determines the MCS based on the Turbo Code according to the channel measurement data, and then informs the LTE/LTE-A MAC entity of the corresponding Code Rate through interface 1, and the LTE/LTE-A MAC entity determines the corresponding Code Rate based on the information. Controls the LTE/LTE-A Turbo Coding unit to perform coding and rate matching.

The PLCP frame format is specifically described below. Since the frame formats of various standards are different, only the MF (mixed format) frame format of the IEEE802.11n protocol and the MF frame format of the IEEE 802.11ac are used as examples for description. The PLCP frame format in the embodiment of the present invention may adopt a frame format conforming to various standards.

FIG. 7 shows the MF (mixed format) frame format of HT (high throughput, that is, 802.11n) in the IEEE 802.11 protocol. This format is the most widely used frame format because it supports backward compatibility with 802.11a/802.11g.

In the frame format shown in Figure 7, the full name of each subfield is as follows:

L-STF: legacy-short training field; occupies 2 symbol times in the time domain;

L-LTF: legacy-long training field; occupies 2 symbol times in the time domain;

L-SIG: legacy-signal field; occupies 1 symbol time in the time domain;

The above three subdomains are reserved for backward compatibility with 802.11a/802.11g;

HT-SIG1 and HT-SIG2: The high throughput-signal field consists of two symbols, denoted as HT-SIG1 and HT-SIG2 respectively;

HT-STF: high throughput-short training field; occupies 1 symbol time in the time domain;

HT-LTF: high throughput-long training field, the number of symbols occupied is determined by the number of space-time streams supported;

HT-Data: The data payload carried by the physical layer, of which the first 16 bits are the service field, which ends with padding bits and tail bits.

In an embodiment of the present invention, it can be represented by a subfield alone (occupying a single symbol time in the time domain), such as named HARQ-Info, and the bit structure of this subfield is shown in Figure 8 (with a 20M channel bandwidth, for example). Among them, the meaning of each field is as follows:

Carrier_Ind: Subcarrier indication on the LTE side, considering that LTE will support carrier aggregation of 32 subcarriers in the future, this field occupies 5 bits;

HARQ_Proc: HARQ process number on the LTE side, which is consistent with the current representation range of LTE and occupies 3 bits;

NDI: new data indicator, new data indicator, consistent with the definition of the LTE protocol, occupying 1 bit;

RV: redundancy version, the redundancy version, which is consistent with the definition of the LTE protocol, occupies 2 bits;

Reserved: reserved bits, occupying 1 bit;

CRC: CRC parity bit, occupying 8 bits;

Tail: Tail bits required for BCC encoding, accounting for 6 bits;

For the frame structure of HT MF, the addition position of the HARQ-Info subfield is shown in Figure 9, after the HT-LTF field. It can be understood that in other embodiments, other adding positions and definitions of bit structures can also be selected.

It should be noted that, for how to notify the receiving end whether the HARQ-Info subfield exists, one method is to use the reserved bit (ie the third bit, bit2) in HT-SIG2 to indicate, for example: 0 means no HARQ-Info Subfield, the terminal processes it in the original way; 1 indicates that there is a HARQ-Info subfield in the current frame structure, which needs to be processed in a new way.

Figure 10 shows the MF (mixed format) frame format of VHT (very high throughput, ie 802.11ac) in the IEEE 802.11 protocol. VHT-MF adds a VHT-SIG-B subfield to the frame format, which is mainly to support multi-user MIMO.

In an embodiment of the present invention, as the newly added information, it can be represented by a sub-domain (a symbol time is occupied alone in the time domain), such as named HARQ-Info, and its specific addition position in the frame structure As shown in Figure 11, after the VHT-SIG-B field (but not exclusive of other addition positions). In this way, it is recommended that HARQ-Info and VHT-SIG-B are jointly coded and modulated, so the definition of the bit structure of HARQ-Info needs to be considered together with VHT-SIG-B; if not specified, the HARQ-Info in Figure 12 The definition of the Info structure takes the channel bandwidth of 20M as an example, and the meaning of each field is consistent with the description in 802.11n.

It should be noted that: since HARQ-Info is jointly encoded with VHT-SIG-B, the tail bits in VHT-SIG-B are no longer required, but are extended to reserved bits. The CRC check digit in the Service Field is also calculated uniformly based on the VHT-SIG-B and the newly added HARQ-Info. For how to notify the receiving end whether the HARQ-Info subfield exists, one of the methods is to use a reserved bit to indicate, such as: 0 means that there is no HARQ-Info subfield, the terminal processes it in the original way; 1 means that there is HARQ in the current frame structure -Info subdomain, needs to be handled in a new way. For the frame structure of VHT-MF, the reserved bits that can be used are as follows: bit2 and bit23 in VHT-SIG-A1; bit9 in VHT-SIG-A2; in the case of single-user (single-user) in VHT-SIG-B bit17, bit18, and bit19. For these available reserved bits, any one of the bits can be taken.

No matter which frame format is adopted, it is important to include Carrier_Ind (subcarrier indication on the LTE side) and HARQ_Proc (HARQ process number on the LTE side) in the frame format. The receiving end of the terminal can know whether it should be sent to the LTE side for decoding after demodulation on the WLAN side of the terminal according to the subcarrier indication field on the LTE side.

Under light load conditions, WLAN has the obvious advantage that the air interface delay is much smaller than that of LTE/LTE-A. By adopting the baseband resource fusion method provided by the present invention, the technical advantages of Turbo Code in HARQ can be retained, and the characteristics of low air interface delay of WLAN can be fully utilized, and the transmission performance can be significantly improved.

The method, base station and terminal for baseband resource fusion between networks of different standards provided by the present invention are described in detail above. For those of ordinary skill in the art, any obvious changes made to the invention without departing from the essential spirit of the invention will constitute an infringement of the patent right of the invention and will bear corresponding legal responsibilities.

Claims (12)

1. A method for integrating baseband resources between networks of different standards, wherein the network includes LTE/LTE-A as the first network and WLAN as the second network, and can simultaneously work on the base stations of the first network and the second network , the base station includes a first network MAC entity and a second network MAC entity, and is characterized by comprising the following steps: the base station encodes the baseband data in the Turbo encoding mode of the first network; negotiating between the first network MAC entity and the second network MAC entity of the base station to route to a modulation unit of the first network or a modulation unit of the second network; If it is determined to be routed to the modulation unit of the second network, the turbo encoded codeword is sent to the modulation unit of the second network, and the modulation unit of the second network performs the modulation method of the second network. Modulate and send; if it is determined to be routed to the modulation unit of the first network, send the turbo encoded codeword to the modulation unit of the first network, and the modulation unit of the first network uses the first network The modulation method is modulated and sent. 2. baseband resource fusion method as claimed in claim 1, is characterized in that: The modulation unit of the second network receives the HARQ information and the turbo-coded codeword, modulates in the modulation mode of the second network, and encapsulates the HARQ information into the frame header. 3. baseband resource fusion method as claimed in claim 2, is characterized in that: The modulation unit of the second network receives the MCS value, and modulates the codeword according to the MCS value. 4. baseband resource fusion method as claimed in claim 3, is characterized in that: The HARQ information includes at least a subcarrier indication of the first network. 5. baseband resource fusion method as claimed in claim 4, is characterized in that: The HARQ information further includes at least the HARQ process number of the first network. 6. baseband resource fusion method as claimed in claim 5, is characterized in that: For HT MF frame structure, the HARQ information is after the HT-LTF field of the frame header; For VHT MF frame structure, the HARQ information follows the VHT-SIG-B field of the frame header. 7. The baseband resource fusion method according to claim 5, further comprising the steps of: At the receiving end, according to the HARQ information, demodulation is performed in a demodulation manner of the second network, and then decoding is performed in a decoding manner of the first network. 8. baseband resource fusion method as claimed in claim 7, is characterized in that: During demodulation, according to the subcarrier indication of the first network in the HARQ information, after demodulation, decoding is performed in a decoding manner of the first network. 9. A base station for baseband resource fusion between networks of different standards, the network includes LTE/LTE-A as the first network and WLAN as the second network, and can work on the first network and the second network at the same time The base station, the base station includes a first network MAC entity and a second network MAC entity, and is characterized in that it includes: a channel coding unit for the first network, and a modulation unit for the second network; the channel coding unit for the first network, for performing turbo coding on baseband data; The first network MAC entity is configured to negotiate with the second network MAC entity for routing to a modulation unit of the first network or a modulation unit of the second network; a channel coding unit of the first network, configured to send the turbo-coded codeword to a modulation unit of the second network; The modulation unit for the second network is configured to modulate and transmit the codeword in the modulation mode of the second network. 10. The base station of claim 9, wherein: The modulation unit of the second network is configured to receive HARQ information and the Turbo-encoded codeword, and encapsulate the HARQ information into a frame header. 11. The base station of claim 9, wherein: The base station also includes a coded bit sequence transmission interface for interaction between the channel coding unit and the modulation unit. 12. The base station of claim 11, wherein: The channel coding unit directly imports the coded bit sequence to the modulation unit through the coded bit sequence transmission interface.

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