CN101253735A - Coordinating communication for multiple wireless communication protocols co-located in a single electronic device - Google Patents
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Abstract
To coordinate the transmission/reception of multiple wireless communication protocols co-located within a mobile device. A single mobile device can contain multiple communication components (e.g., a Bluetooth component, an IEEE 802.11b/g component). To prevent interference and possible loss of data, one communication component may be prevented from transmitting or receiving data packets while the other communication component is either transmitting or receiving. The components may be coordinated by a central controller located in the mobile device. Alternatively, the communication components may exchange messages to determine transmission or reception priority (i.e. collaborative co-existence). In addition, one communication component may monitor the status of the other communication component to determine unused communication slots.
Description
The related application cross reference
The application's case advocates down that at 35 U.S.C. § 119 (e) title is the METHODS AND APPARATUSESFOR INTERWORKING VOICE AND DATA APPLICATIONS and the sequence number 60/698 of filing an application on July 11st, 2005, the interests of 510 U.S. Provisional Patent Application case, the whole content of described application case is incorporated herein by reference.
Technical field
Below in general explanation relates to radio communication, and relates in particular to the interior communication of electronic installation that coordination utilizes two or more independent communication protocols to communicate.
Background technology
Many electronic installations utilize various communications protocols.For example, laptop computer can use wireless personal-area network (WPAN) (for example, bluetooth) that described laptop computer is connected to wireless mouse, Wireless Keyboard etc.In addition, laptop computer can comprise Institute of Electrical and Electric Engineers (IEEE) 802.11b or the 802.11g device is communicated by letter with wireless lan (wlan) to allow laptop computer.The WLAN increased popularity that become.People set up WLAN in its family not at all surprising.In addition, WLAN can be widely used in cafe, library and other both privately and publicly owned place.Mobile phone has also begun to utilize a plurality of communication protocols, for example, and honeycomb fashion, WLAN and Bluetooth protocol.Mobile phone and PDA(Personal Digital Assistant) have become the multi-function device that Email, internet access and traditional cellular communication are provided.Mobile phone also can utilize WPAN to communicate by letter with earphone or other device.
Some wireless communication protocol is overlapping each other aspect its operational frequency range.For example, bluetooth and IEEE802.11b/g device are shared identical frequency spectrum.Bluetooth is a standard communication protocol of realizing that the data in about ten meters scopes transmit.Two kinds of devices of bluetooth and IEEE 802.11b/g are all operated in the industry between 2.4GHz and 2.4835GHz, science and medical science (ISM) frequency band.Bluetooth device transmissions is used the bandwidth of about 1MHz and is skipped the 79MHz of ISM frequency band.The blue-tooth device utilization can change signal each second about 1600 times frequency hop spread spectrum.The IEEE802.11b/g device is with fixing frequencies operations, i.e. one in three nonoverlapping 22MHz channels, or use at device under the situation of Orthodoxy Frequency Division Multiplex (OFDM) and be 16.7Mhz.Therefore, Bluetooth transmission will and disturb the WLAN transmission to have about 28% probability (by 22 channels/79 channels of total of IEEE 802.11b/g device utilization) with the transmission of one in the channel of IEEE802.11b/g device utilization.
For alleviating the possibility of conflict, versions 1.2 regulation AFH (AFH) schemes.During AFH, Bluetooth transmission is avoided the channel of IEEE 802.11b/g and is jumped on the residual spectrum of Bluetooth transmission can be used for.Yet at that time, quite few device is incorporated into the AFH scheme.In addition, when blue-tooth device transmitter and IEEE 802.11b/g device transmitter and place radio communication device (for example, when hand-held set) interior, though at described device just with the different frequency transmission and when receiving, also can disturb another device from the signal power of a device.
When bluetooth and IEEE 802.11b/g device transceiver next-door neighbour, the signal from the first device transmission can make the low noise amplifier (LNA) of second communication device saturated, thereby causes the sensitivity of the second device receiver to reduce.The through-put power of IEEE 802.11b/g device is approximately 17dBm.Yet described device is operated in reaching 30 meters scope.Therefore, the power at receiver place is very little.Usually, bluetooth is used the power to 15dB than the low 10dB of IEEE 802.11b/g device, but the scope of blue-tooth device is extremely short and power therefore receiver place is bigger.Therefore, if IEEE 802.11b/g device is receiving bag in bluetooth device transmissions, then the transmission of power of blue-tooth device will spill in the transceiver of IEEE 802.11b/g device and reduce the sensitivity of receiver.The reduction of receiver sensitivity can cause dropout and communication failure.Communicator and put and can comprise: utilize same antenna, be positioned on identical circuit board or the coupling circuit plate, be positioned at identical chip or the coupling chipset on and the combination.
Blue-tooth device and IEEE 802.11b/g device and put and can cause signal interruption and loss of data.Therefore, need prevent communication failure when blue-tooth device and IEEE 802.11b/g device and when putting.
Summary of the invention
Hereinafter present brief overview to one or more embodiment so that the basic understanding to described embodiment to be provided.Described general introduction be not to contain the extensive overview of embodiment to some extent, and neither plan the crucial or critical element of all embodiment of identification, do not plan to define the scope of any or all embodiment yet.Its unique purpose is, the preorder that is described in more detail that provides some notion about one or more embodiment to be used as hereinafter to be presented with concise and to the point form.
According to one or more embodiment and corresponding disclosure thereof, in conjunction with various aspects are described in the coordination of a plurality of wireless communication protocols in the mobile device.Single mobile device can contain a plurality of communications components (for example: bluetooth module, IEEE 802.11b/g assembly).For preventing to disturb and possible loss of data, can when a communications component is transmitting or receiving, stop another communications component transmission or receive packet.Can coordinate described assembly by the central controller that is arranged in mobile device.Perhaps, the commutative message of described communications component is determined transmission or is received priority.In addition, a communications component can monitor that the state of another communications component is to determine untapped communication time slot.
According to related aspect, a kind of method at a plurality of wireless communication protocol coordinating communications in the identical electronic device can comprise: detect the appointment of at least one time slot of the radio communication of giving the electronic installation that utilizes first communication protocol; And control utilizes the radio communication of electronic installation of second communication agreement to avoid and to conflict according to the radio communication of described first communication protocol.In addition, described method can comprise: ask the appointment again at least one time slot that is assigned to described first communication protocol; In response to described request cancellation data packet transmission; And at least one time slot is assigned to the second communication agreement again based on described request.Described method also can comprise: determine the frequency hopping scheduling to first communication protocol; And utilize null filter to carrying out filtering to avoid interference radio communication according to the second communication agreement according to the radio communication of first communication protocol.In addition, described method can comprise: monitor radio frequency (RF) power of first communications component utilize first communication protocol or be connected to the serial bus interface (SBI) of described first communications component; And determine to be assigned at least one time slot of described first communications component.
According on the other hand, a kind of radio communication can comprise the processor that is configured to control according to the communication of first communication protocol and second communication agreement.Described processor further is configured to control according to the transmission of second communication agreement and receives avoiding and conflicts with transmission or receive in the one or more time slots that are assigned to first communication protocol.Described processor can be asked the appointment again to the one or more time slots that are assigned to first communication protocol.First communications component can be cancelled data packet transmission or reception and one or more time slots can be assigned to the second communication agreement again based on described request.
According to another aspect, a kind of equipment at a plurality of wireless communication protocol coordinating communications in the electronic installation can comprise: checkout gear, its be used for detecting to electronic installation utilize first communication protocol first communications component be used to transmit or the appointment of at least one time slot of receiving; And control device, it is used for controlling electronic installation and utilizes the transmission and receiving avoiding with the transmission of described first communications component or to receive of the second communication assembly of second communication agreement to conflict.In addition, described equipment can comprise: request unit, and it is used to ask the appointment again at least one time slot that is assigned to first communications component; The cancellation device, it is used in response to described request cancellation data packet transmission; And assign device again, it is used for based on described request at least one time slot being assigned to the second communication assembly again.
Store the computer-readable media of computer executable instructions above relating on the other hand, described computer executable instructions is used for: detect to give first communications component that utilizes first communication protocol be used to transmit or the appointment of at least one time slot of receiving; And control utilizes the transmission and receiving avoiding with the transmission of described first communications component or to receive of the second communication assembly of second communication agreement to conflict.
Illustrate a kind of mobile device on the other hand, it is convenient at a plurality of wireless communication protocol coordinating communications in the mobile device, described mobile device comprises: utilize first communications component of first communication protocol, described first communications component is assigned and is used at least one time slot of transmitting or receiving; And utilize the second communication assembly of second communication agreement, and described second communication assembly comprises processor, and described processor is controlled the transmission of described second communication assembly and is received avoiding with the transmission of described first communications component or to receive and conflicts.In addition, described mobile device is with in the lower device at least one: cellular phone, intelligent telephone, handheld communications device, hand-held computing device, satelline radio, global positioning system, laptop computer, and PDA.
Another aspect relates to processor, its execution is used for the instruction at the various wireless communication agreement coordinating communication in the electronic installation, and described instruction comprises: detect to give first communications component that utilizes first communication protocol in the electronic installation be used to transmit or the appointment of at least one time slot of receiving; And control utilizes in the electronic installation transmission and receiving avoiding with the transmission of described first communications component or to receive of the second communication assembly of second communication agreement to conflict.
For addressing relevant purpose before reaching, described one or more embodiment are included in the feature of hereinafter describing and particularly pointing out comprehensively in claims.Hereinafter the explanation and the accompanying drawing sets forth in detail some illustrative aspect of described one or more embodiment.Yet these aspects only represent that several and described embodiment in the mode of principle of various adoptable various embodiment plans to comprise all these aspects and equivalent aspect thereof.
Description of drawings
The wireless communication system of the various embodiment that Fig. 1 graphic extension presents according to this paper.
Fig. 2 is the diagram according to the wireless communication system of one or more embodiment.>
The Bluetooth transmission and the receiving scheduling of one or more aspects that Fig. 3 graphic extension presents according to this paper.
The mobile device that utilizes a plurality of blue-tooth devices of one or more aspects that Fig. 4 graphic extension presents according to this paper.
One or more aspects that Fig. 5 graphic extension presents according to this paper are used to coordinate the method for communicating between IEEE 802.11b/g device and the blue-tooth device.
One or more aspects that Fig. 6 graphic extension presents according to this paper are used to utilize controller assemblies to come the method for coordinating communication.
The method that one or more aspects that Fig. 7 graphic extension presents according to this paper are used to utilize the transmission message between communicator to come coordinating communication.
Fig. 8 is the diagram of the system of coordinating communication between a plurality of communication protocols of one or more embodiment in wireless communications environment of illustrating according to this paper.
Fig. 9 is the diagram according to various aspects system of coordinating communication in wireless communications environment.
Figure 10 can combine with various system and methods described herein and the diagram of the wireless communications environment that adopts.
Embodiment
Describe various embodiment now with reference to graphic, in each is graphic, use identical Ref. No. to refer to components identical from start to finish.In the explanation, for illustrative purposes, well understanding of one or more embodiment a lot of details have been illustrated hereinafter for providing.Yet, clearly, need not these specific detail and also can put into practice this (a bit) embodiment.In other illustration, for ease of describing one or more embodiment, show well-known structure and device with the form of calcspar.
Plans such as used term " assembly ", " system " refer to the entity relevant with computer in the application's case, and it both can be the combination, software of hardware, hardware and software, also can be executory software.For example, assembly can be process, processor, object, executable file, execution thread, the program that (but being not limited to) moved on processor, and/or computer.One or more assemblies can reside in process and/or the execution thread, and assembly can be confined on the computer and/or is distributed between two or more computers.In addition, these assemblies computer-readable media that can store various data structures above various is carried out.These assemblies can communicate by this locality and/or remote process, for example (for example communicate according to signal with one or more packets, from one with local system, distributed system in another assembly interact and/or by the data of signal spans network (for example, internet) with the assembly of other system interaction).
In addition, in conjunction with subscriber stations various embodiment are described in this article.Subscriber stations also can be called system, subscriber unit, travelling carriage, mobile device, remote station, access point, base station, remote terminal, accesses terminal, user terminal, user agent, or subscriber equipment.Subscriber stations can be cellular phone, cordless telephone, SIP (SIP) phone, wireless local loop (WLL) platform, PDA(Personal Digital Assistant), the handheld apparatus with wireless connections ability or other processing unit that is connected to radio modem.
In addition, can use standard program and/or engineering design technology that various aspects as herein described or feature are embodied as a kind of method, equipment or goods.Term used herein " goods " plans to include can be from the computer program of any computer readable device, carrier or medium access.For example, computer-readable media can be including (but not limited to) magnetic storage device (for example, hard disc, floppy disc, magnetic stripe ...), Zip disk (for example, CD (CD), DVD (DVD) ...), smart card, and flash memory device (for example card, rod, key drive).
Referring now to Fig. 1, picture in picture is separated the wireless communication system 100 of explanation according to the various embodiment that this paper presented.System 100 can be included in each other and/or at one or more mobile devices 104 receive, transmission, retransmit (etc.) one or more access points 102 of wireless communication signals.Each access point 102 all can comprise transmitter chain and receiver chain, the person of ordinary skill in the field will understand, and each of described transmitter chain and receiver chain can comprise with the signal transmission again and receive a plurality of assemblies (for example: processor, modulator, multiplexer, demodulator, demultiplexer, antenna or the like) that are associated.
In wireless system 100, be called the existence and the system information of the small data packets announcement wireless system of beacon from access point 102 cyclical transmission.Mobile device 104 senses described beacon and attempts to set up the wireless connections that arrive access point 102.
Fig. 2 graphic extension system 200, it comprises the WLAN that is associated with WLAN (wireless local area network) (LAN).Access point 102 is communicated by letter with mobile device 104.Though the single access point 102 of graphic extension only for simplicity's sake, described WLAN can comprise a plurality of access points 102.Access point 102 is connected to ethernet concentrator or switch 202.Ethernet concentrator 202 can be connected to one or more electronic installations 204, wherein comprises: personal computer, peripheral unit (for example, facsimile machine, photocopier, printer, scanner etc.), server or the like.Ethernet concentrator 202 also can be connected to router two 06, and router two 06 arrives modulator-demodulator 208 with data packet transmission.Modulator-demodulator 208 can be with data packet transmission to wide area network (WAN) 210, for example internet.Perhaps, router two 06, ethernet concentrator 202 and access point 102 can be combined in the single wireless router.The single simple network configuration of system's 200 graphic extensions.Should be appreciated that as the person of ordinary skill in the field the many additional configuration that comprise alternative electronic devices are possible.
The wlan system of graphic extension among Fig. 2 can be used so that telephone service to be provided with voice over ip protocol (VoIP).VoIP is wherein with the system of internet as telephone network.Voice messaging is to transmit with the data packet form that is called voice packet herein.In one or more embodiments, mobile device (for example, mobile phone) can utilize IEEE 802.11b/g device to be connected to WLAN.Described WLAN and then can be connected to the internet, as shown in Figure 2.Therefore, described mobile device can utilize VoIP to finish call.Described mobile device also can comprise blue-tooth device, and it is positioned at the IEEE 802.11b/g device place of the hand-held set of next-door neighbour's (for example) mobile phone.Described mobile device also can comprise earphone, and it has the blue-tooth device of communicating by letter with the blue-tooth device in the hand-held set.Therefore, can receive voice packet at the hand-held set place and use Bluetooth protocol that it is transferred to earphone by WLAN.
In one or more embodiments, coordinate to use the transmission and the reception of IEEE 802.11b/g device with blue-tooth device.Can be by transmission on another device when avoiding on a device, receiving, in transmission simultaneously on two devices and on two devices, receive the conflict of cancelling between the communication protocol simultaneously.Though used bluetooth and IEEE802.11b/g communication protocol description system and method herein, the person of ordinary skill in the field will easily understand, described system and method is applicable to additional communication protocols.For example, other 802.11 agreement or wan protocol.
The high-quality speech HV1 transmission mode of Fig. 3 graphic extension Bluetooth protocol.The HV1 pattern is used and to be comprised the even number that normal length is 625 microseconds and the frame size of odd number time slot.The even number time slot through branch be used in the transmission and the odd number time slot be used in reception through branch.Blue-tooth device can utilize synchronizing channel operation (SCO).As seen from Figure 3, in described image duration, there is the gap of about 250 microseconds between transmission and the reception.This gap comprises standby mode and synthesizer mode.During described two patterns, IEEE 802.11b/g device can transmit under the situation of not disturbing blue-tooth device or receive.
In one or more embodiments, IEEE 802.11b/g can or receive packet in transmission by the transmission of blue-tooth device and during the gap between receiving.Concerning large-sized packet (about 1500 bytes), IEEE 802.11b/g device not with by the transmission of blue-tooth device or receive and suitably receive under the overlapping situation or the probability of transmission is approximately 5 percent.On the contrary, the transmission of IEEE 802.11b/g device is less relatively to the possibility that Bluetooth transmission exerts an influence.Approximately the bluetooth service of 80-90% is not subjected to the influence of WLAN transmission.This is because of the WLAN transmission and receives the comparatively faster fact.The transmission rate of IEEE 802.11b/g device is obviously faster than the transmission rate of blue-tooth device.
In one or more embodiments, bluetooth transmission can be utilized bluetooth 2.0 need not to encode and comprise under the situation of extra slots.For example, high-quality speech pattern HV3 have per second two megabits enhancing data rate and the frame size of 16 time slots is provided, approximate 10 milliseconds greatly.The even number of illustrated HV1 is identical with the odd number time slot among preceding two time slots and Fig. 3.First time slot is used in transmission and second time slot is used in reception through branch through branch, wherein in transmission with there is the gap of 250 microseconds between receiving.Do not use remaining 14 time slots.Therefore, but the IEEE802.11b/g device can utilize untapped time slot to transmit and receive.In HV3, if blue-tooth device only is used for voice transfer, just IEEE 802.11b/g device can reach 87% throughput under the situation of transmission that need not coordinating bluetooth and IEEE 802.11b/g device and reception so.
In one or more embodiments, bluetooth device mode can be utilized high-quality speech pattern HV2.HV2 uses bluetooth 2.0 under the situation that need not to encode.HV2 comprises 16 frame slots, approximates 10 milliseconds greatly.Opposite with above-mentioned transmission mode, HV2 utilizes preceding two time slots to transmit and utilizes the 3rd and the 4th time slot to receive.This will stay 12 can be by the extra not use time slot of IEEE 802.11b/g device utilization.When using the HV2 transmission mode, if device only is used for voice transfer, just IEEE 802.11b/g device can reach 70% throughput under the situation of transmission that need not coordinating bluetooth and IEEE802.11b/g device and reception so.
In one or more extra embodiment, described bluetooth transmission can comprise coding.In bluetooth 2.0HV1, first, second and third time slot is used in transmission through branch, and the 4th, the 5th and the 6th time slot is used in reception through branch.This will stay ten untapped time slots, and IEEE 802.11b/g device can transmit and receive data in these time slots.If only with described transmission mode transmission and reception speech data, IEEE 802.11b/g device can be under the situation of transmission that need not coordinating bluetooth and IEEE 802.11b/g device and reception, just can reach 62% throughput so for blue-tooth device.
Referring now to Fig. 4, mobile device can be communicated by letter with a plurality of blue-tooth devices.Single blue-tooth device in the described mobile device can be with deciding device and can communicating by letter with a plurality of subordinate blue-tooth devices.For example, mobile communication system 400 can comprise hand-held set 402, earphone 404 and the keyboard 406 of multifunctional mobile telephone.Hand-held set 402 comprises main blue-tooth device, and described main blue-tooth device may command is communicated by letter with the subordinate blue-tooth device that is arranged in earphone 404 and keyboard 406.Described main blue-tooth device can be communicated by letter simultaneously with described subordinate blue-tooth device.Perhaps, described main blue-tooth device can individually be communicated by letter with described subordinate blue-tooth device by switching promptly between the subordinate blue-tooth device.If blue-tooth device is just communicated by letter with a plurality of slave units, so described device can need to transmit and receive the extra frame time slot of packet.
With reference to Fig. 5-7, picture in picture is separated the method for explanation about the coordinating communication agreement.Although for the purpose of simplified illustration, described method shown and be described as a series of actions, but should be appreciated that and know, described method is not limited to running order, because according to one or more embodiment, some action can this paper shows and the order of description carries out and/or carries out simultaneously with other action by being different from.For example, the person of ordinary skill in the field will understand and know, relevant state or incident that a kind of method alternately is expressed as is a series of (for example, in the state diagram).In addition, implement according to the method for one or more embodiment not needs utilize all described actions.In addition, though herein at bluetooth and IEEE 802.11b/g unit describe the whole bag of tricks, described method is applicable to additional communication protocols and be not limited to bluetooth and IEEE 802.11b/g device.
Referring now to Fig. 5, picture in picture is separated one or more embodiment that explanation presents according to this paper and is used for method 500 at the wireless communications environment coordinating communication.At 502 places, detect the two existence of blue-tooth device and 802.11b/g device in the mobile device.At 504 places, be identified for the transmission and the receiving scheduling of blue-tooth device.Based on scheduling, determine the transmission and the reception of 802.11b/g device at 506 places to blue-tooth device.Usually, blue-tooth device has quite strict transmission and receiving scheduling, as illustrated among Fig. 3.Therefore, actual way is to adjust the transmission and the reception of 802.11b/g device rather than revise transmission and receiving scheduling to blue-tooth device.
One or more embodiment that Fig. 6 graphic extension presents according to this paper are used for the method 600 at the wireless communications environment coordinating communication.In aspect one or more, controller assemblies may command WLAN and Bluetooth transmission.Described controller assemblies may be implemented in the processor of control radio communication device.For example, described controller assemblies can be arranged in the processor of the hand-held set of mobile phone.The earphone that described mobile phone can use VoIP and utilize blue-tooth device by WLAN.At 602 places, controller assemblies detects the existence of bluetooth and 802.11b/g device.At 604 places, controller assemblies is determined some system parameters.For example, described WLAN can need minimum throughput to guarantee sufficient transfer of data.Controller assemblies can come schedule voice and packet based on service quality or other parameter, and meanwhile prevents to carry out simultaneously reception of WLAN and bluetooth and transmission.Controller assemblies can insert medium access control (MAC) layer of WLAN and bluetooth data packets at 606 places to determine the data type in the described bag.Depend on data type, controller assemblies can reschedule voice or packet.In aspect one or more, the 802.11b/g device can serve as controller assemblies and coordinate WLAN and Bluetooth transmission and reception.
One or more further aspect in, controller assemblies may be implemented in the access point place.Because the less relatively transmission region of WPAN, access point possibly can't detect the existence of blue-tooth device.Yet the 802.11b/g device in the mobile device can notify access point to have blue-tooth device so that the coordinating communication agreement.Access point can be dispatched a plurality of blue-tooth devices, but need not to make blue-tooth device synchronized with each other.Access point only needs to coordinate juxtaposed 802.11b/g device and blue-tooth device.
In one or more other embodiment, can between WLAN and Bluetooth transmission, divide the beacon interval of access point.Beacon interval is by the time between the beacon transmissions of access point.Beacon interval can be divided into WLAN at interval with bluetooth interval to realize communicating by letter of two devices.Access point can be dispatched WLAN at interval, follows by bluetooth interval, but also may not necessarily dispatch with described order.
In aspect one or more, in fact bluetooth device schedule remains unchanged, and conflicts with blue-tooth device avoiding but handle the WLAN transmission.Therefore, no matter coordination component is to be implemented in the 802.11b/g device or any other possible embodiment as independent controller assemblies, all should before scheduling WLAN transmission, at first detects the existence of blue-tooth device and determine transmitting and scheduling blue-tooth device.For determining Bluetooth transmission and receiving scheduling, coordination component can monitor that the RF power that is sent by blue-tooth device is with identification transmission and receiving slot.In case coordination component has been determined the time slot that blue-tooth device utilizes, it just can calculate timing and the WLAN transmission during the affiliated time slot of scheduling of not using time slot and receive.
In aspect one or more, coordination component can monitor the serial bus interface (SBI) of the message between the central processing unit (for example, the travelling carriage modem chip sets (MSM) in the mobile phone) that is used for blue-tooth device and mobile device.Before transmission and receiving, blue-tooth device and the commutative message of mobile device central processing unit.Therefore, these message can be used for determining about timing of transmission and reception activity.Coordination component can be dispatched the transmission of IEEE 802.11b/g device and be received to avoid and the transmission of blue-tooth device and conflicting of reception.
Referring now to Fig. 7, picture in picture is separated explanation and is used for method 700 at wireless communications environment coordinating communication according to one or more embodiment of presenting herein.In aspect one or more, the commutative message of IEEE 802.11b/g device and blue-tooth device is to coordinate WLAN and Bluetooth communication protocol.Blue-tooth device and IEEE 802.11b/g device all comprise processor and the controller that can manage the message between the described device.In certain embodiments, for promoting interoperability, the message that IEEE 802.11b/g device will contain at 702 places relevant for the information of beacon periodicity and beacon length sends to blue-tooth device.No matter whether exist ongoing audio call all can send described message.
When bluetooth device initializes communication, the message that described blue-tooth device can will comprise at 704 places about the information of transformat sends to the 802.11b/g device.For example, in utilizing the mobile phone of earphone, when setting up audio call, blue-tooth device can send to the 802.11b/g device with the message that comprises about the information of the voice quality standard (for example, HV1, HV2, HV3) utilized and the number of time slot that will be used by blue-tooth device.At 706 places, 802.11b/g device scheduling WLAN transmission of voice packets is to avoid and the conflicting of bluetooth device transmissions and reception.
In addition, IEEE 802.11b/g device can send a message to the blue-tooth device of request time slot.IEEE 802.11b/g device message can comprise the information about beacon periodicity, length and service times.It is important that IEEE 802.11b/g device is kept WLAN communication from access interface reception beacon.Beacon comprises registration and other important information.If IEEE 802.11b/g device is because Bluetooth transmission or reception and can not receive beacon by WLAN, the IEEE802.11b/g device can ask blue-tooth device stagger arrangement time slot to be assigned to allow beacon to receive so.In these situations, blue-tooth device can be discerned and assign time slot again from current bluetooth schedule, so that not the WLAN business of interfere with high priority, for example beacon.In addition, WLAN can send to request bluetooth and reschedule the time slot appointment, with the WLAN transmission that allows to cause because of quality of service request, emergency call request or other similar type request.Blue-tooth device can reschedule the delay to produce about ten milliseconds.This can cause the glitch in the audio call.
In one or more further embodiment, IEEE 802.11b/g device can send a message to blue-tooth device with indication beacon periodicity and beacon length before setting up calling, and monitored the Bluetooth transmission of implementing by the SBI interface subsequently.When initialization audio call, blue-tooth device is determined suitable transformat and time slot and will be comprised voice quality (for example, HV1, HV2 etc.) and blue-tooth device sends to IEEE 802.11b/g device with the message of the number of time slot of utilization.After this, IEEE 802.11b/g device monitors the SBI interface between MSM and the blue-tooth device.MSM sent to bag blue-tooth device and when transmission is finished end-of-packet message was sent to blue-tooth device before transmission just.MSM receives and to unwrap beginning and end-of-packet message so that received by blue-tooth device.Therefore, IEEE 802.11b/g device can calculate about timing of bluetooth device transmissions and reception by monitoring the SBI interface message.
In one or more further embodiment, MSM can provide blue-tooth device and both the shared timings of IEEE 802.11b/g device.In case two devices all have shared timing, monitor that SBI just no longer is necessary.Described device can just can be determined its distributed time slot under the situation of not using triggering message.
In aspect one or more, the blue-tooth device time slot is assigned and to be the circuit shape and to carry out medium access through distributing slave unit on the time slot easily not try to be the first.In this case, be difficult in and change time slot during the voice communication and assign.But the blue-tooth device interrupt call also reinitializes the voice packet transmission to change the time slot appointment.For preventing coordination problem, the IEEE802.11b/g device should become voice service scheduling away from the bluetooth distributed time slot time, and blue-tooth device should be less than 50% of the described time with transmitting and receiving to be controlled to be.
In one or more alternate embodiments, blue-tooth device and IEEE 802.11b/g device can comprise control signal, so that when blue-tooth device was transmitting or receive voice packet or packet, described signal sets was high.In case the transmission of voice or packet or finish receiving, described signal just turns back to low.Similarly, IEEE 802.11b/g device can comprise the signal that the WLAN transmission is transmitted or received to the indication that arrives blue-tooth device when.
In one or more embodiments, IEEE 802.11b/g device can utilize filter to eliminate and the conflicting of bluetooth device transmissions.Bluetooth device transmissions is to the arrowband of the broad-band channel of WLAN receiver (22/20MHz) (1MHz) intruder.The WLAN receiver can use notch filter able to programme to make Bluetooth transmission invalid.For making Bluetooth transmission invalid, the WLAN receiver will need to determine bluetooth jump pattern and regularly disturb to follow the tracks of.The frequency hopping of following the tracks of and calculate Bluetooth transmission needs extra signal processing, thereby has obviously increased the complexity that WLAN connects.
In one or more other embodiment, automatic power-save delivery (UAPSD) pattern that the utilization of IEEE 802.11b/g device is not dispatched is transmitted during distributing to the time slot of blue-tooth device or is received avoiding.In the UAPSD pattern, IEEE 802.11b/g device enters sleep pattern when not transmitting or receive bag.IEEE 802.11b/g device is independently waken up.Though be intended as power saving feature at first, the UAPSD pattern can be used for preventing that IEEE 802.11b/g device from conflicting with blue-tooth device.In the UAPSD pattern, IEEE 802.11b/g device will enter sleep pattern in Bluetooth transmission/reception cycle period.When the transmission circulation is finished, IEEE 802.11b/g device will send to the WLAN access point to " triggering " message.In case receive described triggering, access point will send all voice packets or the packet that IEEE 802.11b/g device has been stored for described device when sleep pattern.In this way, IEEE 802.11b/g device can avoid interference Bluetooth transmission and reception.
In one or more alternate embodiments, IEEE 802.11b/g device can use the APSD pattern through scheduling to avoid interference Bluetooth transmission and reception.If utilize the APSD through scheduling, the request of IEEE 802.11b/g device is from the transmission and the reception through scheduling of access point so.Dispatch described transmission and reception, so that do not disturb Bluetooth transmission and reception through scheduling.
Should be appreciated that,, can make a plurality of deductions about transformat, frequency etc. according to one or more embodiment as herein described.As using herein, term " deduction " typically refers to according to one group of measured value of catching by incident and/or data to come reasoning or infer the process of described system, environment and/or User Status.For example, can adopt deduction to discern specific context or action, perhaps can produce probability distribution about state.Deduction can be probabilistic, that is to say, based on the probability distribution of the consideration of data and incident being calculated about care state.Infer and also can refer to be used for constitute the more technology of advanced event from one group of incident and/or data.This deduction can cause from one group of institute's observed events and/or the event data of storing the structure incident or the action that make new advances, no matter whether to go up next-door neighbour's form with the time relevant for described incident, and no matter described incident and data are from one or from several incidents and data source.
According to example, the one or more methods that above present can comprise the deduction of the existence of making about blue-tooth device, the transformat of any blue-tooth device etc.Should be appreciated that previous examples is illustrative in itself and is not the mode that plan to limit the number of the deduction that can make or make these deductions in conjunction with various embodiment described herein and/or method.
Fig. 8 is the diagram of system 800, and described system is convenient to according to coordinating communication between a plurality of communication protocols of one or more embodiment in wireless communications environment of illustrating herein.System 800 can reside in the access point and/or in the user's set.System 800 comprises receiver 802, and receiver 802 is from (for example) reception antenna received signal, and received signal is implemented typical action (for example filtering, amplification, down-conversion or the like) and will be signal digitalized to obtain sample through what regulate.Demodulator 804 can obtain institute's receiving symbol of each symbol period, and institute's receiving symbol is provided to processor 806.
User's set 800 can comprise memory 808 in addition, but memory 808 is coupled to processor 806 with mode of operation and can stores the information relevant with coordinating communication and any other appropriate information.Memory 808 can be stored the agreement that is associated with coordinating communication in addition.Should be appreciated that data storage component as herein described (for example, memory) can be volatibility or nonvolatile memory, maybe can comprise volatibility and nonvolatile memory both.The non-limiting mode by graphic extension, nonvolatile memory can comprise read-only memory (ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electrically-erasable ROM (EEROM) (EEPROM), or flash memory.Volatile memory can comprise the random-access memory (ram) that serves as the External Cache memory.The non-limiting mode by graphic extension, RAM can possess many kinds of forms, for example, synchronous random access memory (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), Double Data Rate SDRAM (DDR SDRAM), the SDRAM (ESDRAM), the synchronization link DRAM (SLDRAM) that strengthen, and direct memory bus RAM (DRRAM).Memory 808 in the described system and method plans to include but not limited to the memory of these and any other adequate types.User's set 800 can comprise further that Symbol modulator 810 and emission are through the transmitter 812 of modulation signal.
In addition, user's set 800 can comprise second receiver 814, second receiver 814 is from (for example) reception antenna received signal, and received signal is implemented typical action (for example filtering, amplification, down-conversion or the like) and will be signal digitalized to obtain sample through what regulate.Second demodulator 816 can obtain institute's receiving symbol of each symbol period, and institute's receiving symbol is provided to processor 818.But second processor 818 can mode of operation be connected to memory 808.Second processor 818 also can comprise optimization component, and it is similar to the above optimization component of associative processor 806 descriptions.User's set 800 comprises further that also second Symbol modulator 820 and emission are through second transmitter 822 of modulation signal.
Fig. 9 is the diagram of being convenient to the system 900 of coordinating communication agreement according to various aspects.System 900 comprises base station or access point 902.As illustrated among the figure, the signal that reception antenna 906 receives from one or more user's sets 904 is passed through in base station 902, and is transmitted into described one or more user's set 904 by transmitting antenna 908.
Figure 10 shows exemplary wireless communication system 1000.For simplicity's sake, wireless communication system 1000 is described a base station and a terminal.Yet, should be appreciated that described system can comprise more than a base station or access point and/or more than a terminal or user's set, wherein extra base station and/or terminal can roughly be similar to or be different from example base station and terminal hereinafter described.In addition, should be appreciated that described base station and/or terminal can adopt system as herein described (Fig. 8-9) and/or method (Fig. 5-7) to be convenient to radio communication therebetween.
Referring now to Figure 10, on down link,, transmit (TX) data processor 1010 and receive, format, encode, interlock, reach modulation (perhaps sign map) business datum and modulation symbol (" data symbol ") is provided at access point 1005 places.Symbol modulator 1015 receptions and processing said data symbol and frequency pilot sign also provide symbols streams.1015 pairs of data of Symbol modulator and frequency pilot sign carry out multiplexed and obtain one group of N transmission symbol.Each transmission symbol all can be data symbol, frequency pilot sign or signal value of zero.Described frequency pilot sign can send in each symbol period continuously.Can carry out frequency division multiplex (FDM), Orthodoxy Frequency Division Multiplex (OFDM), time division multiplexing (TDM), frequency division multiplex (FDM) to described frequency pilot sign, or code division multiplex (CDM).Under the situation of ofdm system, Symbol modulator 1015 can use N point IFFT that N transmission symbol of each group transformed to time domain, to obtain to contain " conversion " symbol of N time domain chip.Symbol modulator 1015 repeats each part of figure shift usually, to obtain corresponding symbol.Institute's repeating part is called Cyclic Prefix, and is used for resisting the delay expansion of wireless channel.
Transmitter unit (TMTR) 1020 receives described symbols streams and converts thereof into one or more analog signals, the down link signal that the step of going forward side by side joint (for example amplification, filtering and up-conversion) described analog signal is suitable for launching on wireless channel with generation.Then, by antenna 1025 with described downlink signal transmissions to terminal.At terminal 1030 places, antenna 1035 receiving downlink signals also are provided to receiver unit (RCVR) 1040 with received signal.Receiver unit 1040 is regulated the signal that (for example filtering, amplification, and down-conversion) is received, and will be signal digitalized to obtain sample through what regulate.Symbol demodulator 1045 obtains N institute's receiving symbol and institute is received frequency pilot sign to be provided to processor 1050 to carry out channel estimating.Symbol demodulator 1045 is further from the frequency response estimated value of processor 1050 receiving downlinks, to the data symbol implementation data demodulation that received to obtain data symbol estimated value (described data symbol estimated value is the estimated value of institute's data symbol), and described data symbol estimated value is provided to RX data processor 1055, described RX data processor 1055 is with described data symbol estimated value demodulation (being symbol de-maps), release of an interleave and the decoding business datum to recover to be transmitted.The processing complementation that the processing that symbol demodulator 1045 and RX data processor 1055 implemented is implemented with the Symbol modulator 1015 and the TX data processor 1010 at access point 1005 places respectively.
On up link, TX data processor 1060 processing service data also provide data symbol.Symbol modulator 1065 receives described data symbol and frequency pilot sign and multiplexed to its enforcement, implements modulation and symbols streams is provided.Then, transmitter unit 1070 receives and handles described symbols streams to produce the uplink signal that is transmitted into access point 1005 by antenna 1035.
At access point 1005 places, receive the uplink signal of self terminal 1030 by antenna 1025, and handle described uplink signal to obtain sample by receiver unit 1075.Then, symbol demodulator 1080 handle described samples and provide to up link the estimated value of the frequency pilot sign that receives and data symbol.RX data processor 1085 deal with data sign estimation values are to recover the business datum by terminal 1030 transmission.Processor 1090 is now implemented channel estimating with terminal at each that transmit on up link.
For multiplex system (for example, FDMA, OFDMA, CDMA, TDMA etc.), a plurality of terminals can transmission simultaneously on up link.For this system, pilot subbands can be shared in different terminals.Channel estimation technique can be used for the situation that the pilot subbands of each terminal is wherein all crossed over whole operation frequency band (may except that band edge).For obtaining the frequency diversity of each terminal, this pilot subband structure will need.Technology described herein can be implemented by various devices.For example, these technology may be implemented in hardware, software, or in its combination.For the hardware embodiment, the used processing unit of channel estimating may be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other is designed for the electronic unit of implementing function described herein, or in its combination.For software, can implement by the module (for example program, function etc.) of implementing function described herein.Software code can be stored in the memory cell and by processor 1090 and 1050 and carry out.
For the software implementation scheme, can use the module (for example program, function etc.) of implementing function described herein to implement technology described herein.Described software code can be stored in the memory cell and by processor and carry out.Described memory cell both may be implemented in and also may be implemented in the processor outside the processor, and under one situation of back, described memory cell can be coupled to described processor with communication mode by various devices known in this technology.
The example that comprises one or more embodiment mentioned above.Certainly, can not describe each conceived combination of each assembly or method for the purpose of describing previous embodiment, but the person of ordinary skill in the field can recognize, also can there be a lot of other combination and arrangements in various embodiment.Therefore, described embodiment plans to include spirit and interior all these changes, modification and the version of scope that belongs to the claims of enclosing.In addition, with regard to this detailed description or terminology in claims " comprised (includes) ", the mode that comprises of described term was intended to be similar to the mode that term " comprises (comprising) " and explained when being used as adversative in claims.
Claims (31)
1, a kind of method at a plurality of wireless communication protocol coordinating communications in the electronic installation, described method comprises:
At the electronic installation place that utilizes first communication protocol, detect appointment at least one time slot that is used for radio communication; And
The radio communication of controlling the electronic installation that utilizes the second communication agreement is to avoid and to conflict according to the radio communication of described first communication protocol.
2, the method for claim 1, it comprises that further the use Bluetooth communication protocol is as described first communication protocol.
3, the method for claim 1, it comprises that further one in use IEEE 802.11b communication protocol or the IEEE802.11g communication protocol is as described second communication agreement.
4, the method for claim 1, it further comprises:
Request is to the appointment again of described at least one time slot of being assigned to described first communication protocol.
Transmission or reception in response to described request cancellation packet; And
Based on described request described at least one time slot is assigned to described second communication agreement again.
5, the method for claim 1, it further comprises:
Determine frequency hopping scheduling to described first communication protocol; And
Utilize null filter to carrying out filtering to avoid interference radio communication according to described second communication agreement according to the radio communication of described first communication protocol.
6, the method for claim 1, it further comprises:
Supervision utilizes radio frequency (RF) power of first communications component of described first communication protocol; And
Determine to be assigned to described at least one time slot of described first communication protocol based on described RF power.
7, the method for claim 1, it further comprises:
Supervision is connected to the business on the serial bus interface (SBI) of first communications component that utilizes described first communication protocol; And
Determine to be assigned to described at least one time slot of described first communication protocol based on described SBI business.
8, the method for claim 1, it further comprises:
During being assigned to described at least one time slot of described first communication protocol, the power saving feature of the second communication assembly that utilizes described second communication agreement is used.
9, the method for claim 1, it further comprises:
During being assigned to described at least one time slot of described first communication protocol, the dispatch feature of the second communication assembly that utilizes described second communication agreement is used.
10, the method for claim 1, it further comprises:
Message is transferred to the second communication assembly that utilizes described second communication agreement from first communications component that utilizes described first communication protocol, and described message comprises the scheduling to described at least one time slot that is assigned to described first communication protocol.
11, a kind of Wireless Telecom Equipment, it comprises:
Processor, it is configured to control the communication according to first communication protocol and second communication agreement, and described processor further is configured to control according to the transmission of described second communication agreement and receives avoiding and conflicts with transmission or receive in the one or more time slots that are assigned to described first communication protocol; And
Memory, itself and described processor are coupled.
12, equipment as claimed in claim 11, described first communication protocol is Bluetooth communication protocol.
13, equipment as claimed in claim 11, described second communication agreement are one in 802.11b and the IEEE 802.11g communication protocol.
14, equipment as claimed in claim 11, described processor request is to the appointment again of described one or more time slots of being assigned to described first communication protocol, and first communications component that utilizes described first communication protocol is assigned to described second communication agreement again based on described request cancellation data packet transmission or reception and with described one or more time slots.
15, equipment as claimed in claim 11, it further comprises null filter, described null filter carries out filtering to transmission and reception according to described first communication protocol.
16, as claim 11 described equipment, described processor monitors utilize described first communication protocol first communications component radio frequency (RF) power and determine to be assigned to described one or more time slots of described first communication protocol.
17, equipment as claimed in claim 11, it further comprises the serial bus interface (SBI) that is connected to first communications component that utilizes described first communication protocol, and described processor monitors is professional and determine to be assigned to described one or more time slots of described first communication protocol from the SBI of described first communications component.
18, equipment as claimed in claim 11, its electricity-saving function that further comprises the second communication assembly that utilizes described second communication agreement is carried out utilization during being assigned to described one or more time slots of described first communication protocol.
19, equipment as claimed in claim 11, first communications component that utilizes described first communication protocol is to the scheduling of the second communication assembly transmission that utilizes described second communication agreement to described at least one time slot of being assigned to described first communication protocol.
20, a kind of Wireless Telecom Equipment that is used at a plurality of wireless communication protocol coordinating communications in the electronic installation, described equipment comprises:
Checkout gear, its be used for detecting to described electronic installation utilize first communication protocol first communications component be used to transmit or the appointment of at least one time slot of receiving; And
Control device, it is used for controlling described electronic installation and utilizes the transmission and receiving avoiding with the transmission of described first communications component or to receive of the second communication assembly of second communication agreement to conflict.
21, equipment as claimed in claim 20, it further comprises:
Request unit, it is used to ask the appointment again to described at least one time slot that is assigned to described first communications component;
The cancellation device, it is used for cancelling data packet transmission in response to described request; And
Again assign device, it is used for based on described request described at least one time slot being assigned to described second communication assembly again.
22, equipment as claimed in claim 20, it further comprises:
Determine device, it is used for definite frequency hopping scheduling to described first communications component; And
Filter, it is used for the transmission of described first communications component and reception are carried out filtering to avoid interference described second communication assembly.
23, equipment as claimed in claim 20, it further comprises:
Monitoring arrangement, it is used to monitor radio frequency (RF) power of described first communications component; And
Determine device, it is used to determine to be assigned to described at least one time slot of described first communications component.
24, equipment as claimed in claim 20, it further comprises:
Monitoring arrangement, it is used to monitor the business on the serial bus interface (SBI) that is connected to described first communications component; And
Determine to be assigned to described at least one time slot of described first communications component.
25, equipment as claimed in claim 20, it further comprises:
Transmitting device, it is used for message is transferred to described second communication assembly from described first communications component, and described message comprises the scheduling to described at least one time slot that is assigned to described first communications component.
26, store the computer-readable media of computer executable instructions above a kind of, described computer-readable media comprises:
Checkout gear, its be used for detecting to electronic installation utilize first communication protocol first communications component be used to transmit or the appointment of at least one time slot of receiving; And
Control device, it is used for controlling described electronic installation and utilizes the transmission and receiving avoiding with the transmission of described first communications component or to receive of the second communication assembly of second communication agreement to conflict.
27, computer-readable media as claimed in claim 26, it further comprises the instruction that is used for following operation:
Request is to the appointment again of described at least one time slot of being assigned to described first communications component; And
Based on described request described at least one time slot is assigned to described second communication assembly again.
28, a kind of mobile device, it comes coordinating communication at a plurality of wireless communication protocols in the described mobile device, and described mobile device comprises:
Utilize first moving assembly of first communication protocol in the described mobile device, described first communications component is assigned and is used at least one time slot of transmitting or receiving; And
Utilize the second communication assembly of second communication agreement in the described mobile device, described second communication assembly comprises the transmission of controlling described second communication assembly and receives the processor that conflicts with the transmission or the reception of described first communications component to avoid.
29, mobile device as claimed in claim 28, described device are with in the lower device at least one: cellular phone, intelligent telephone, handheld communications device, hand-held computing device, satelline radio, global positioning system, laptop computer and PDA.
30, a kind of processor, its execution are used for the instruction at a plurality of wireless communication protocol coordinating communications in the electronic installation, and described instruction comprises:
Detect to give first communications component that utilizes first communication protocol in the described electronic installation be used to transmit or the appointment of at least one time slot of receiving; And
Control the transmission and the reception of the second communication assembly that utilizes the second communication agreement in the described electronic installation, conflict to avoid with the transmission of described first communications component or to receive.
31, processor as claimed in claim 30, described instruction further comprises:
Request is to the appointment again of described at least one time slot of being assigned to described first communications component; And
Based on described request described at least one time slot is assigned to described second communication assembly again.
Priority Applications (1)
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| CN201610140959.4A CN105848166B (en) | 2005-07-11 | 2006-07-11 | For the multiple wireless communication protocol coordinating communications being placed in single electronic device |
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| US69851005P | 2005-07-11 | 2005-07-11 | |
| US60/698,510 | 2005-07-11 | ||
| US11/412,578 | 2006-04-26 |
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| CN201610140959.4A Division CN105848166B (en) | 2005-07-11 | 2006-07-11 | For the multiple wireless communication protocol coordinating communications being placed in single electronic device |
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| CN101253735A true CN101253735A (en) | 2008-08-27 |
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| CNA2006800320357A Pending CN101253735A (en) | 2005-07-11 | 2006-07-11 | Coordinating communication for multiple wireless communication protocols co-located in a single electronic device |
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