WO2011038584A1

WO2011038584A1 - Signal processing method and related devices in multi-mode multi-standby mobile terminal

Info

Publication number: WO2011038584A1
Application number: PCT/CN2010/071497
Authority: WO
Inventors: 刘刚; 杨勇; 王利民; 商士栋
Original assignee: 青岛海信移动通信技术股份有限公司
Priority date: 2009-09-29
Filing date: 2010-04-01
Publication date: 2011-04-07
Also published as: CN101668354A

Abstract

A signal processing method and related devices in a multi-mode multi-standby mobile terminal are disclosed, to provide a simple and feasible solution which enables users to use an equipped bluetooth earphone while calling in each communication mode without adding extra bluetooth chips. The method includes: a first baseband processing platform which handles the current call decodes the air interface signals into analog signals, and sends the decoded analog signals to a second baseband processing platform which is the only platform connected with the bluetooth chip; the second baseband processing platform encodes and compresses the received analog signals into the digital signals in a PCM encoding format, which is negotiated with the bluetooth chip, and sends the digital signals to the bluetooth earphone via the bluetooth chip.

Description

Signal processing method and related device in multi-mode multi-standby mobile terminal

The present invention relates to the field of mobile communication technologies, and in particular, to a signal processing method in a multi-mode multi-standby mobile terminal, a multi-mode multi-standby mobile terminal, and a baseband processing platform in a multi-mode multi-standby mobile terminal. Background technique

With the improvement of communication networks, a variety of communication networks have achieved successful commercial use. People have higher and higher requirements for communication, and have been widely used in mobile terminals that work in multiple network environments at the same time. At present, the mobile terminal can adopt the TD-SCDMA, WCDMA, CDMA2000 EVDO, GSM, CDMA2000 1X arbitrary dual mode dual standby or multimode multi-standby mode.

In order to support multiple communication modes, there is a corresponding baseband processing platform for each communication mode in the multi-mode multi-standby mobile terminal. The baseband processing platform refers to a hardware and software basic platform located in the mobile terminal, wherein the hardware basic platform is composed of a main processor, a coprocessor, a radio frequency module, a storage module, etc.; the software basic platform is composed of an operating system, a protocol stack, etc. The basis of achievable wireless communication. For example, if the mobile terminal can use the GSM communication mode and the CDMA communication mode, the corresponding GSM baseband processing platform needs to support the GSM communication mode, and the corresponding CDMA baseband processing platform to support the above CDMA communication mode.

Bluetooth (Bluetooth) is a short-range wireless data communication technology standard jointly proposed by Toshiba, Ericsson, IBM, Intel and Nokia in May 1998. Bluetooth technology enables single-point-to-multipoint wireless data and voice transmission over a 10-meter radius. The data transmission bandwidth is up to 1 Mbps, and the communication shield is electromagnetic waves with frequencies between 2.402 GHz and 2.480 GHz. Bluetooth headset is to apply Bluetooth technology to the hands-free headset, so that users can avoid the annoying wires, and easily talk in various ways. It is because of the advantages of Bluetooth headsets that there are a considerable number of mobile phones on the market. The terminals are equipped with Bluetooth headsets.

The existing Bluetooth chip usually only supports one PCM clock and one PCM encoding format, and the PCM encoding format configured by different baseband processing platforms is different, so that the user needs to use The dual-standby mobile terminal as an example of the multi-mode multi-standby mobile terminal supports each communication mode for normal use of the equipped Bluetooth headset. Currently, there are several solutions:

1. The baseband processing platform supporting each communication mode is respectively configured with a Bluetooth chip working with the Bluetooth headset, and each baseband processing platform controls its corresponding Bluetooth chip. The advantage of this scheme is that the control is relatively easy, but on the other hand, there is a problem that the complexity of designing the layout is increased due to the addition of the corresponding Bluetooth chip, and more serious is that each Bluetooth chip has Corresponding RF antennas, because of the space limitation in the mobile terminal, the distance between multiple Bluetooth RF antennas is relatively close, so the interference cannot be well overcome to ensure the stability of the Bluetooth RF signal, and the Bluetooth chip and the corresponding RF antenna are added. It is necessary to make a large adjustment to the structure of the mobile terminal, and the implementation process is complicated;

2. A plurality of baseband processing platforms are respectively connected with a special Bluetooth chip capable of simultaneously supporting the same PCM (Pulse Code Modulation) clock and different PCM encoded format signals, which requires high requirements for the Bluetooth chip. The Bluetooth chip can dynamically switch the Bluetooth PCM encoding format configuration after power-on, and requires that the PCM clocks of multiple baseband processing platforms must be synchronized, so the selection of the baseband platform and the selection of the Bluetooth chip can be poorly selected, and the product cost is also Higher. Summary of the invention

The embodiment of the invention provides a signal processing method and related device in a multi-mode multi-standby mobile terminal, which is used to provide a simple and feasible way for a user to pass a multi-mode multi-standby mobile terminal without adding an additional Bluetooth chip. When communicating in each communication mode, the solution equipped with the Bluetooth headset can be used normally.

The signal processing method in the multi-mode multi-standby mobile terminal according to the embodiment of the present invention includes the following steps: processing the first baseband processing platform of the current call to decode the air interface signal into an analog signal, and transmitting the decoded analog signal to the Bluetooth signal. The second baseband processing platform is connected to the chip; the second baseband processing platform compresses the received analog signal into a digital signal in a PCM encoded format agreed with the Bluetooth chip; and passes the encoded compressed digital signal through the Bluetooth chip through the PCM interface. Send to a Bluetooth headset. A signal processing method in a multi-mode multi-standby mobile terminal according to an embodiment of the present invention includes the steps: a first baseband processing platform uniquely connected by a Bluetooth chip decodes a digital signal of a predetermined PCM encoding format sent by a Bluetooth chip into an analog signal. The digital signal sent by the Bluetooth chip is generated by the Bluetooth headset encoding and compressing the user voice signal; and the decoded analog signal is sent to the second baseband processing platform for processing the current call; the second baseband processing platform The received analog signal code is compressed into an air interface signal and transmitted.

The multi-mode multi-standby mobile terminal provided by the embodiment of the present invention includes a first baseband processing platform that processes the current call and a second baseband processing platform that is uniquely connected to the Bluetooth chip, where: the first baseband processing platform is configured to decode the air interface signal into Analog signal, and sending the decoded analog signal to the second baseband processing platform, and receiving the analog signal sent by the second baseband processing platform, and compressing the received analog signal into an air interface signal and transmitting; second baseband processing a platform, configured to compress an analog signal encoded by the first baseband processing platform into a digital signal of a PCM encoded format agreed with the Bluetooth chip, and send the encoded digital signal to the Bluetooth headset through the Bluetooth chip, and the Bluetooth chip The transmitted digital signal of the predetermined PCM encoding format is decoded into an analog signal, and the decoded analog signal is sent to the first baseband processing platform.

The baseband processing platform in the multi-mode multi-standby mobile terminal according to the embodiment of the present invention includes: a first receiving unit, configured to receive an air interface signal sent by the base station; and a decoding unit, configured to receive the first receiving unit The air interface signal is decoded into an analog signal; the first sending unit is configured to send the analog signal obtained by decoding the decoding unit to the baseband processing platform uniquely connected to the Bluetooth chip in the multimode multi-standby mobile terminal; and the second receiving unit is configured to receive An analog signal sent by the baseband processing platform connected to the Bluetooth chip; the coding unit is configured to compress the analog signal received by the second receiving unit into an air interface signal; and the second sending unit is configured to compress the air code obtained by encoding the coding unit A signal is sent to the base station.

A baseband processing platform in a multi-mode multi-standby mobile terminal according to an embodiment of the present invention, the baseband processing platform is a unique baseband processing platform in which the Bluetooth chip is connected in the multi-mode multi-standby mobile terminal, and includes: a first receiving unit And receiving an analog signal sent by the baseband processing platform other than the baseband processing platform in the multimode multi-standby mobile terminal; the coding unit, configured to receive the first receipt The analog signal received by the element is encoded into a digital signal of a PCM encoding format agreed with the Bluetooth chip; a first transmitting unit, configured to send the digital signal obtained by encoding the encoding unit to the Bluetooth headset through the Bluetooth chip; the second receiving unit, a digital signal for receiving a predetermined PCM encoding format sent by the Bluetooth chip; a decoding unit, configured to decode the digital signal of the predetermined PCM encoding format received by the second receiving unit into an analog signal; and a second sending unit, configured to decode The analog signals obtained by the unit decoding are sent to the other baseband processing platforms.

The embodiment of the present invention is connected to a Bluetooth chip through a baseband processing platform in the multi-mode multi-standby mobile terminal, and the other baseband processing platform sends an analog signal corresponding to the air interface signal to the baseband processing platform connected to the Bluetooth chip when processing the current call, The baseband processing platform connected by the Bluetooth chip encodes the analog signal sent by the other baseband processing platform into a digital signal of the PCM encoded format agreed with the Bluetooth chip and transmits the digital signal to the Bluetooth chip, and decodes the digital signal sent by the Bluetooth chip into an analog signal. The analog signal obtained after decoding is sent to the baseband processing platform for processing the current call, and then the baseband processing platform that processes the current call compresses the received analog signal into an air interface signal and sends the signal to the base station. A baseband processing platform in the multi-mode multi-standby mobile terminal is used as a medium for signal interaction between other baseband processing platforms and the Bluetooth chip, thereby providing a simple and feasible way for the user to make a call through each communication mode of the multi-mode multi-standby mobile terminal. At the time, the scheme of the equipped Bluetooth headset can be used normally. DRAWINGS

1 is a schematic flowchart of an embodiment of the present invention;

2 is a schematic structural diagram of a multimode multi-standby mobile terminal according to an embodiment of the present invention;

3 is a flow chart of processing an air interface signal sent by a base station to a mobile terminal according to an embodiment of the present invention;

4 is a flowchart of processing a voice signal input by a user through a microphone in a Bluetooth headset according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a baseband processing platform in a multimode multi-standby mobile terminal according to an embodiment of the present disclosure; FIG. 6 is a schematic structural diagram of a baseband processing platform in another multi-mode multi-standby mobile terminal according to an embodiment of the present invention. detailed description

In the prior art, in order to enable a Bluetooth headset for each communication mode in a multimode multi-standby mobile terminal, an additional Bluetooth chip needs to be added, or there is a problem that the control process has low complexity and low reliability.

The embodiment of the present invention provides that only one baseband processing platform is connected to the Bluetooth chip in the plurality of baseband processing platforms, and the other baseband processing platforms send the analog signal corresponding to the air interface signal to the baseband processing platform connected to the Bluetooth chip when processing the current call. The baseband processing platform connected by the Bluetooth chip implements the function of the signal encoding and decoding and the function of interacting with the Bluetooth chip, and sends the analog signal corresponding to the audio signal received by the Bluetooth headset to the baseband processing platform that processes the current call. That is, one of the multi-mode multi-standby mobile terminals is used as a medium for signal interaction between the other baseband processing platforms and the Bluetooth chip. The baseband processing platform connected to the Bluetooth chip is equivalent to an ordinary microphone for other baseband processing platforms.

The implementation principle, the specific implementation manner, and the corresponding beneficial effects that can be achieved by the technical solutions of the embodiments of the present invention are explained in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the principle flow of the embodiment of the present invention is as follows:

For the air interface signal sent by the base station, go to Step 10, Step 20, and Step 30:

Step 10: The baseband processing platform that processes the current call decodes the air interface signal into an analog signal, and sends the decoded analog signal to the unique baseband processing platform connected to the Bluetooth chip;

Step 20: The unique baseband processing platform connected to the Bluetooth chip compresses the received analog signal code into a digital signal in a PCM encoded format agreed with the Bluetooth chip;

Step 30: The unique baseband processing platform connected to the Bluetooth chip sends the encoded digital signal to the Bluetooth headset through the Bluetooth chip through the PCM interface;

For the user audio signal received by the Bluetooth headset, perform step 40, step 50, and step 60:

Step 40: The only baseband processing platform connected to the Bluetooth chip sends the Bluetooth chip through the PCM interface. The digital signal of the predetermined PCM encoding format is decoded into an analog signal, and the digital signal sent by the Bluetooth chip through the PCM interface is generated by the Bluetooth headset encoding the user's voice signal received by the microphone;

Step 50: The unique baseband processing platform connected to the Bluetooth chip sends the analog signal obtained by decoding in step 40 to the baseband processing platform that processes the current call;

Step 60: The baseband processing platform that processes the current call compresses the received analog signal into an air interface signal and sends the signal to the base station.

In the following, in accordance with the above inventive principles of the present invention, an embodiment will be described in detail to explain and explain the implementation principle of the method of the present invention in detail.

2 is a schematic diagram of a connection relationship of components in a mobile terminal in a voice signal processing scheme in a multimode multi-standby mobile terminal according to an embodiment of the present invention, where a CDMA baseband processing platform is connected to a Bluetooth chip through its own PCM interface. The GSM baseband processing platform and the CDMA baseband processing platform can transmit signals to each other.

The inventors have noticed that the existing baseband processing platform has a linein interface and a Uneout interface, which are usually idle or used to transmit signals required for additional functions provided by the mobile terminal, in this embodiment CDMA baseband processing. The platform and the GSM baseband processing platform transmit signals through the linein interface and the lineout interface, specifically the lineout interface of the GSM baseband processing platform is connected with the linein interface of the CDMA baseband processing platform, and is used for transmitting signals transmitted by the GSM baseband processing platform to the CDMA baseband processing platform. The linein interface of the GSM baseband processing platform is connected to the lineout interface of the CDMA baseband processing platform for transmitting signals transmitted by the CDMA baseband processing platform to the GSM baseband processing platform. Of course, the CDMA baseband processing platform and the GSM baseband processing platform can also transmit signals by other means, such as a dedicated new interface.

In this embodiment, the GSM baseband processing platform is a baseband processing platform for processing the current call, that is, the current user is talking to other users through the GSM communication mode based on the SIM card in the GSM network in the dual mode dual standby mobile terminal.

Referring to FIG. 3, the specific processing procedure for the air interface signal sent by the base station to the mobile terminal after the call starts is as follows: Step 31, the GSM baseband processing platform decodes the air interface signal sent by the base station into an analog signal; Step 32, the GSM baseband processing platform sends the analog signal obtained by decoding in step 31 to the linein interface of the CDMA baseband processing platform through the lineout interface, The lineout interface of the GSM baseband processing platform is connected to the linein interface of the CDMA baseband processing platform;

Step 33: The CDMA baseband processing platform compresses the analog signal received by the linein interface into a digital signal in a PCM encoded format agreed with the Bluetooth chip according to a PCM clock and a PCM encoding method agreed with the Bluetooth chip;

Step 34: The CDMA baseband processing platform sends the digital signal obtained by the step 33 compression and compression to the Bluetooth chip through the PCM interface;

Step 35: The Bluetooth chip sends the digital signal received in step 34 to the Bluetooth headset through the air interface;

Step 36: The Bluetooth headset decodes the digital signal sent by the Bluetooth chip into an analog signal and plays it to the user, so that the user can hear the voice of the other party through the Bluetooth headset.

The signal codec process required for the conversion between the analog signal and the digital signal in step 1 can be implemented by a speech codec (CODEC) in the GSM baseband processing platform; similarly, the speech codec in the CDMA baseband processing platform can be used. The CODEC is used to implement the signal encoding and decoding process required for the conversion between the analog signal and the digital signal in step 33.

Referring to FIG. 4, after the call starts, the specific processing procedure for the voice signal input by the user using the mobile terminal through the microphone in the Bluetooth headset is as follows:

Step 41: The Bluetooth headset encodes the audio analog signal received by the microphone into a digital signal; Step 42, the Bluetooth headset transmits the digital signal obtained in step 41 to the Bluetooth chip connected to the CDMA baseband processing platform through the air interface;

Step 43: The Bluetooth chip sends the digital signal sent by the Bluetooth headset to the CDMA baseband processing platform through the PCM interface;

Step 44: The CDMA baseband processing platform decodes the digital signal sent by the Bluetooth chip in step 43 according to the PCM clock and PCM encoding mode agreed with the Bluetooth chip to obtain an analog signal;

Step 45, the CDMA baseband processing platform connects the analog signal obtained in step 44 through lineout. The port is sent to the linein interface of the GSM baseband processing platform, and the lineout interface of the CDMA baseband processing platform is connected to the linein interface of the GSM baseband processing platform;

Step 46: The GSM baseband processing platform compresses the received analog signal into a digital signal. Step 47: The GSM baseband processing platform uses the digital signal obtained by the step 46 encoding compression as an air interface signal, and sends the digital signal to the base station through the air interface, so that the base station will The air interface signal is forwarded to the other party.

The signal codec processing required for the conversion between the analog signal and the digital signal in step 44 can be implemented by a speech codec (CODEC) in the CDMA baseband processing platform; the speech codec in the GSM baseband processing platform (CODEC) ) to implement the signal encoding and decoding process required for the conversion between the analog signal and the digital signal in step 47.

In terms of software control, the CDMA baseband processing platform connected to the Bluetooth chip in this embodiment is the main control platform, and the GSM baseband processing platform is the non-master control platform. The main control platform refers to the baseband processing platform of the multi-mode multi-standby mobile terminal, which is mainly responsible for controlling the sharing of limited peripheral devices by itself and each non-master baseband processing platform, and controlling the baseband operation of the non-master baseband processing platform. Processing platform.

The embodiment of the present invention is an example of a baseband processing platform in which a CDMA baseband processing platform is uniquely connected to a Bluetooth chip. In fact, the baseband processing platform uniquely connected to the Bluetooth chip may be a GSM baseband processing platform or a baseband processing platform supporting other communication modes. The CDMA baseband processing platform can also be a baseband processing platform that is not connected to the Bluetooth chip.

In the solution of the voice signal processing in the multi-mode multi-standby mobile terminal proposed by the embodiment of the present invention, only one baseband processing platform is connected to the Bluetooth chip, and the other baseband processing platform sends the analog signal corresponding to the air interface signal to the current call during processing of the current call. A baseband processing platform connected by a Bluetooth chip, a baseband processing platform connected by a Bluetooth chip realizes a signal encoding and decoding function, and encodes an analog signal sent by another baseband processing platform into a digital signal of a PCM encoded format agreed with a Bluetooth chip, and The digital signal sent by the Bluetooth chip is decoded into an analog signal, and the digital signal sent by the Bluetooth chip is obtained by encoding and compressing the voice signal received by the microphone by the Bluetooth earphone, and the analog signal obtained by decoding the baseband processing platform connected by the Bluetooth chip is sent. For the baseband processing platform that handles the current call, then The baseband processing platform of the current call compresses the received analog signal code into an air interface signal and sends it to the base station.

Correspondingly, the embodiment of the present invention further provides a baseband processing platform in a multi-mode multi-standby mobile terminal. As shown in FIG. 5, the apparatus includes a first receiving unit 501, a decoding unit 502, a first sending unit 503, and a first The receiving unit 504, the encoding unit 505, and the second sending unit 506 are specifically as follows: The first receiving unit 501 is configured to receive an air interface signal sent by the base station;

The decoding unit 502 is configured to decode the air interface signal received by the first receiving unit 501 into an analog signal;

The first sending unit 503 is configured to send the analog signal obtained by decoding the decoding unit 502 to the baseband processing platform that is uniquely connected to the Bluetooth chip in the multi-mode multi-standby mobile terminal;

a second receiving unit 504, configured to receive an analog signal sent by a baseband processing platform that is uniquely connected to the Bluetooth chip;

The encoding unit 505 is configured to compress the analog signal received by the second receiving unit 504 into an air interface signal;

The second sending unit 506 is configured to send the air interface signal obtained by the coding unit 505 to the base station.

FIG. 6 is a schematic structural diagram of a baseband processing platform in another multi-mode multi-standby mobile terminal according to an embodiment of the present disclosure, where the baseband processing platform is a baseband uniquely connected to a Bluetooth chip in the multi-mode multi-standby mobile terminal a processing platform, the baseband processing platform includes a first receiving unit 601, an encoding unit 602, a first transmitting unit 603, a second receiving unit 604, a decoding unit 605, and a second sending unit 606, where:

The first receiving unit 601 is configured to receive an analog signal sent by another baseband processing platform other than the baseband processing platform in the multimode multi-standby mobile terminal;

The encoding unit 602 is configured to compress the analog signal received by the first receiving unit 601 into a digital signal in a PCM encoded format that is agreed with the Bluetooth chip;

a first sending unit 603, configured to send the digital signal obtained by encoding and compressing the encoding unit 602 to the Bluetooth headset through the Bluetooth chip; a second receiving unit 604, configured to receive a digital signal in a predetermined PCM encoding format sent by the Bluetooth chip;

The decoding unit 605 is configured to decode the digital signal of the predetermined PCM encoding format received by the second receiving unit 604 into an analog signal;

a second sending unit 606, configured to send the analog signal obtained by decoding the decoding unit 605 to the other baseband processing platform,

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A signal processing method in a multi-mode multi-standby mobile terminal, comprising: processing a first baseband processing platform of a current call to decode an air interface signal into an analog signal, and transmitting the decoded analog signal to a Bluetooth chip The only connected second baseband processing platform;

The second baseband processing platform compresses the received analog signal code into a convention agreed with the Bluetooth chip.

Digital signal in PCM encoded format;

The encoded digital signal is sent to the Bluetooth headset through the Bluetooth chip.

2. The method of claim 1 wherein the speech codec in the first baseband processing platform decodes the air interface signal into an analog signal.

3. The method according to claim 1, wherein the voice codec in the second baseband processing platform transmits the analog signal sent by the first baseband processing platform according to a PCM clock agreed with the Bluetooth chip. The code is compressed into a digital signal in a PCM encoded format as agreed with the Bluetooth chip.

4. The method according to claim 1, wherein the first baseband processing platform sends the analog signal obtained by decoding the air interface signal to the linein interface of the second baseband processing platform through the lineout interface of the first baseband processing platform, and the first baseband is used. The lineout interface of the processing platform is connected to the linein interface of the second baseband processing platform.

The method according to any one of claims 1 to 4, wherein the second baseband processing platform is a baseband processing platform supporting a CDMA communication mode.

The method according to any one of claims 1 to 4, wherein the first baseband processing platform is a baseband processing platform supporting a GSM communication mode.

A signal processing method in a multi-mode multi-standby mobile terminal, comprising: a first baseband processing platform uniquely connected by a Bluetooth chip decodes a digital signal of a predetermined PCM encoding format sent by a Bluetooth chip into an analog signal, The digital signal sent by the Bluetooth chip is generated by the Bluetooth headset encoding and compressing the user voice signal;

Transmitting the obtained analog signal to a second baseband processing platform that processes the current call; the second baseband processing platform compresses the received analog signal into an air interface signal concurrently

8. The method according to claim 7, wherein the voice codec in the first baseband processing platform sends the Bluetooth chip through the PCM interface according to the PCM clock agreed with the Bluetooth chip. The digital signal of the predetermined PCM encoded format is decoded into an analog signal.

9. The method of claim 7, wherein the speech codec in the second baseband processing platform compresses the analog signal encoded by the first baseband processing platform into an air interface signal.

10. The method according to claim 7, wherein the first baseband processing platform sends an analog signal obtained by decoding the digital signal sent by the Bluetooth chip to the Hnein interface of the second baseband processing platform through its lineout interface. The lineout interface of the first baseband processing platform is connected to the Undn interface of the second baseband processing platform.

A multi-mode multi-standby mobile terminal, comprising a Bluetooth chip, further comprising: a first baseband processing platform for processing a current call and a second baseband processing platform uniquely connected to the Bluetooth chip, wherein:

a first baseband processing platform, configured to decode the air interface signal into an analog signal, and send the decoded analog signal to the second baseband processing platform, and receive the analog signal sent by the second baseband processing platform, and receive the simulated signal The signal code is compressed into an air interface signal and sent;

a second baseband processing platform, configured to compress the analog signal sent by the first baseband processing platform into a digital signal of a PCM encoding format agreed with the Bluetooth chip, and send the encoded digital signal to the Bluetooth headset through the Bluetooth chip. And decoding the digital signal of the predetermined PCM encoding format sent by the Bluetooth chip into an analog signal, and transmitting the decoded analog signal to the first baseband processing platform.

A baseband processing platform in a multi-mode multi-standby mobile terminal, comprising: a first receiving unit, configured to receive an air interface signal sent by a base station;

a decoding unit, configured to decode the air interface signal received by the first receiving unit into an analog signal; the first sending unit, configured to send the analog signal obtained by decoding the decoding unit to the Bluetooth chip unique connection in the multi-mode multi-standby mobile terminal Baseband processing platform; a second receiving unit, configured to receive an analog signal sent by a baseband processing platform uniquely connected to the Bluetooth chip;

The coding unit is configured to compress the analog signal received by the second receiving unit into an air interface signal, and the second sending unit is configured to send the air interface signal obtained by encoding the coding unit to the base station.

A baseband processing platform in a multimode multi-standby mobile terminal, wherein the baseband processing platform is a unique baseband processing platform in which the Bluetooth chip is connected in the multimode multi-standby mobile terminal, and includes:

a first receiving unit, configured to receive an analog signal sent by another baseband processing platform other than the baseband processing platform in the multimode multi-standby mobile terminal;

a coding unit, configured to compress the analog signal received by the first receiving unit into a digital signal in a PCM encoded format that is agreed with the Bluetooth chip;

a first sending unit, configured to send the digital signal obtained by encoding the encoding unit to the Bluetooth headset through the Bluetooth chip;

a second receiving unit, configured to receive a digital signal of a predetermined PCM encoding format sent by the Bluetooth chip, and a decoding unit, configured to decode the digital signal of the predetermined PCM encoding format received by the second receiving unit into an analog signal;

And a second sending unit, configured to send the analog signal obtained by decoding the decoding unit to the other baseband processing platform.