CN101167266A

CN101167266A - Radio apparatus

Info

Publication number: CN101167266A
Application number: CNA200680014210XA
Authority: CN
Inventors: 大卫·H·埃文斯
Original assignee: Koninklijke Philips Electronics NV
Current assignee: Koninklijke Philips NV
Priority date: 2005-04-28
Filing date: 2006-04-20
Publication date: 2008-04-23
Also published as: US20090061715A1; KR20080005295A; JP2008538886A; EP1878135A1; WO2006114731A1

Abstract

A radio apparatus (400) comprises first and second antennas (42, 44), a first transceiver (40) having a first transmitter (60) and a first receiver (61 ), a second receiver (62), a switching means (45, 46) arranged to provide selectable first and second states, and a control means (50) adapted to select between the first and second states for simultaneous transmission by the first transmitter (60) and reception by the second receiver (62). The switching means (45, 46) enables the first transmitter (60) to be coupled to either one of the first and second antennas (42, 44) and simultaneously the second receiver (62) to be coupled to the other of the antennas (42, 44), but prohibits coupling of both the first transmitter (60) and the second receiver (62) to a common antenna (42 or 44).

Description

Wireless device

Technical field

The present invention relates to wireless device in conjunction with antenna diversity.

Background technology

Well-known antenna diversity is the method that is used for the communication quality of improvement system, the wireless signal experience multipath transmisstion in this system.The configuration of some antenna diversities provides to be selected to be used for emission or to receive between a plurality of antennas, and other configuration provides the combination of the signal that receives via a plurality of antenna.A kind of configuration in back need more complicated can composite signal receiver.The receiver that preceding a kind of configuration (being called antenna selection diversity) needs are fairly simple is also the most relevant with the present invention.

The example of using the wireless device of antenna selection diversity has been shown among Fig. 1.It comprises the transceiver (Tx/Rx) 10 that is coupled to selector switch 16.Can control selector switch 16 with arbitrary transceiver 10 that is coupled to two antennas 12,13.Therefore can select antenna to be used to transmit and receive the two.Controller (not shown) control selector switch 16 is selected based on the signal quality that is received.

It also is known that the wireless device outfit is used for operating more than one signal type, for example be equipped with to be used for not only transmitting and receiving and be used for the mobile telephone signal of communicating by letter but also transmit and receive the mobile phone that is used for the Bluetooth signal of mobile phone with Bluetooth function or personal computer communication, and also be equipped with the mobile phone that is used for receiving world locational system (GPS) signal with mobile telephone network.It is contemplated that other combination, for example also be equipped with the mobile phone that is used for received television signal.In this manual such equipment is called " dual signal apparatus ", it is characterized in that having the ability of the unlike signal that transmits and receives transmission different pieces of information bit simultaneously.Term " dual signal apparatus " also is not intended to get rid of this equipment and is applicable to the possibility that transmits and receives simultaneously more than two signals.

Fig. 2 shows the example of dual signal apparatus.This dual signal apparatus comprises two

transceivers

10,11, and each transceiver is coupled to

antenna

12,13 separately.Can replace one of transceiver with receiver, for example needed as the broadcast singal that receives from the broadcast system that does not need to return transmission.As shown in Figure 2, dual signal apparatus can comprise that at least one antenna is used for each receiver or transceiver, the isolation between the unlike signal that transmits and receives simultaneously to provide.Two

transceivers

10,11 may use community antenna, but need filter joint to guarantee suitable isolation between two

transceivers

10,11 in this case.Do not expect such filter, this is because they will increase pass-band loss and reduce transmitter frequency, has increased component count and cost simultaneously.

In order to improve the communication quality of dual signal apparatus, antenna diversity shown in Figure 1 can be applied to equipment shown in Figure 2.Fig. 3 shows consequent device structure, wherein to having distributed identical Reference numeral with Fig. 3 and Fig. 1 or 2 components identical.For for two

transceivers

10,11 provide antenna diversity, four

antennas

12,13,14,15 are provided and need have comprised two selector switches 18 of two selector switches 16.The not shown controller that is used to control these switches, but each selector switch 16 will be controlled independently, and this is because the multipath transmisstion that each signal experienced generally is independently.Equipment shown in Figure 3 has the shortcoming that needs four antennas, and this has increased the size of equipment.

Summary of the invention

The purpose of this invention is to provide the improved wireless device that is applicable to dual signal operation and combines antenna diversity.

According to the invention provides wireless device, comprising:

First and second antennas;

First transceiver comprises first transmitter and first receiver;

Second receiver;

Switching device shifter, be provided for providing selectable first and second states, wherein in first state, the output of first transmitter is coupled to first antenna and is not coupled to second antenna, the input of second receiver is coupled to second antenna and is not coupled to first antenna; And

In second state, the output of first transmitter is coupled to second antenna and is not coupled to first antenna, the input of second receiver is coupled to first antenna and is not coupled to second antenna; And

Control device is applicable between first and second states and selects, and is used for carrying out simultaneously the emission of first transmitter and the reception of second receiver.

This equipment transmits and receives when being used to guarantee via different antennae generation unlike signal.The invention provides the dual signal apparatus of comparing antenna that need be still less in conjunction with antenna diversity but with equipment shown in Figure 3, therefore realized compacter equipment, and simplified the needs of the isolation between the transmitter and receiver are provided.In order to benefit from these advantages, this equipment transmits and receives when can not select antenna to be used for unlike signal independently.But, more may cause acceptable signal level such as any selection but not in the environment (being contemplated to be such situation in the most of positions in the overlay area at radio system) of unacceptable signal level, such restriction is an acceptable at the antenna of signal.

In one embodiment, when first and second receivers received simultaneously, this equipment was applicable to first and second receivers is coupled to different antennae in first and second antennas.Such embodiment has the advantage that is easy to realize.

In another embodiment, when first and second receivers received simultaneously, this equipment was applicable to first and second receivers arbitrary is independently coupled to the arbitrary of first or second antenna.Such embodiment has for two receivers provides the independently advantage of receive diversity.

Control device can depend on indication to signal quality to State Selection.The unlike signal quality standard of plurality of optional can be used for selecting antenna.For example, can be via the arbitrary of first and second antennas or the two, one or more mass parameter of measuring of the signal that is received according to the signal that is received at first receiver and second receiver generates the indication to signal quality.In this way, this equipment can be carried out the selection of the quality of reception of optimizing itself.

Control device can be in response to the value via the signal that at least one received of first and second antennas to State Selection.In this way, this equipment can be carried out selection optimize receiving by external equipment, and this external equipment receives signal that this equipment launches and sends the order that is used to change state or to the indication of the measured signal quality of this external equipment to this equipment.

Can use the combination of above-mentioned state choice criteria.

Description of drawings

To only describe the present invention with reference to the accompanying drawings by by way of example, wherein:

Fig. 1 is the theory diagram of prior art antenna diversity equipment;

Fig. 2 is the theory diagram of prior art dual signal apparatus;

Fig. 3 is the theory diagram with dual signal apparatus of antenna diversity;

Fig. 4 is the theory diagram according to equipment of the present invention;

Fig. 5 is the flow chart of method of the equipment of application drawing 4; And

Fig. 6 is the theory diagram according to another equipment of the present invention.

Embodiment

With reference to Fig. 4, show first embodiment according to wireless device 400 of the present invention, comprise first antenna 42, second antenna 44, first transceiver 40 that comprises first transmitter 60 and first receiver 61 and second receiver 62.For example first transceiver 40 can be the mobile phone transceiver that is used for GSM (global system for mobile communications) or UMTS (universal mobile telecommunications system) or other mobile telephone network.Second receiver 62 is applicable to and receives the unlike signal that transmission is different from the data bit of first receiver 61.For example, second receiver 62 can be the broadcasting receiver that is used for receiving such as the digital television signal of DVB (digital video broadcasting) or particularly DVB-H (digital video broadcasting-hand-held) signal or any other broadcast singal.

There is the

switching device shifter

45,46 that comprises antenna selector device 46 and routing arrangement 45.Antenna selector device 46 is provided for by arbitrary be coupled to first transceiver 40 of routing arrangement 45 with

antenna

42 or 44 as alteration switch work, and another of

antenna

42 or 44 is coupled to second receiver 62.If first transceiver 40 is applicable to either-way operation, that is to say, it can (but not being side by side) be launched or received signal, and then routing arrangement 45 can be the arbitrary switch that is coupled to the antenna selector device that is used for first transmitter 60 and first receiver 61.Can use either-way operation in time-division multiplexing multiple access (TDMA) system, even operate the impression that can give user's full-duplex operation in this system, transmitting and receiving does not need to take place simultaneously yet.Alternatively, if first transceiver 40 is applicable to full-duplex operation (promptly can transmit and receive signal simultaneously), if perhaps in addition first transceiver 40 be applicable to either-way operation, then routing arrangement 45 can be a duplexer.

Switching device shifter

45,46 provides first state (in this first state first antenna 42 to be coupled in the output of first transmitter 60 and not to be coupled to second antenna 44, second antenna 44 be coupled in the input of second receiver 62 and be not coupled to first antenna 42) and second state (in this second state, second antenna 44 is coupled in the output of first antenna 60 and is not coupled to first antenna 42, the input of second receiver 62 is coupled to first antenna 42 and is not coupled to second antenna 44.Select by state such as control device 50

control switch device

45,46 of microcontroller.When the reception of the emission that need carry out first transmitter 60 simultaneously and second receiver 62, control device 50 is applicable to one of first and second states of selection.

Alternatively, there is the signal quality measured

device

52,53 be coupled to control device 50, is used to measure at least one mass parameter of signal that the signal that first receiver 61 received and second receiver 62 received.This mass parameter can be one or more: the parameter of signal level, signal to noise ratio, signal interference ratio, the error rate, frame error rate or any other expression signal quality.Control device 50 is selected the state of

switching device shifter

45,46 according to the value of measured mass parameter.

Alternatively, perhaps additionally, equipment 400 can receive from external equipment and comprises order or to the signal of the indication of equipment 400 quality of signals that is received with external equipment that launched, and implements this order or indication to select the state of switching device shifter 45,46.For example, when signal that external equipment slave unit 400 is received in predetermined time duration under predetermined quality threshold the time, external equipment can be reported.

With reference to Fig. 5, show the example of the method for the state of selecting switching device shifter 45,46.By the mode of example, first transceiver 40 is considered as the GSM transceiver, second receiver 62 is considered as the DVB receiver.This method starts from step 100, at random selects the initial condition of

switching device shifter

45,46 in this step, at random selects to be used for each antenna of first transceiver 40 and second receiver 62 thus.

Flow to into step 110, this step test with according to user's interface device indicated user's request determine current whether this equipment of needs is as GSM phone and/or DVB receiver operation.This equipment is only as the GSM phone operation if desired, then flow to into step 120, by signal quality measured device 52 (for example received signal intensity indication (RSSI) circuit) the GSM signal that is received is carried out signal quality measuredly in this step, and test to determine whether measured value surpasses predetermined value T _GSMIf measured value surpasses predetermined value T _GSM, then stream turns back to step 110.The current state that keeps switching device shifter repeats when to indicate the demand that receives the DVB signal in the test of step 110 to detect the user in a looping fashion.

If the measured value of test indication in step 120 is no more than predetermined value T _GSM, then flow to into step 130, at this step exchange antenna, make and now another antenna is coupled to first transceiver 40.Carry out the test identical in step 140 then, whether satisfy quality standard to determine the GSM signal that another antenna is just receiving now with step 120.If measured value surpasses predetermined value T _GSM, stream returns step 110.

If the measured value of test indication in step 140 is no more than predetermined value T _GSM, then this

marker antenna

42 or 44 is not all just receiving and is having above quality threshold demand T _GSMThe GSM signal of enough quality, therefore step 150 selective reception more the antenna of the GSM signal of good quality be used for first transceiver 40.Stream turns back to step 110 then.

If need this equipment only as the DVB receiver operation in step 110, then flow to into step 160, by signal quality measured device 53 (for example received signal intensity indication (RSSI) circuit) the DVB signal that is received is carried out signal quality measuredly in this step, and test to determine whether measured value surpasses predetermined value T _DVBIf measured value surpasses predetermined value T _DVB, then stream turns back to step 110.The current state that keeps switching device shifter, repeating in a looping fashion when to indicate with the detection user in the test of step 110 need reception GSM signal.

If the measured value of test indication in step 160 is no more than predetermined value T _DVB, then flow to into step 170, at this step exchange antenna, make and now another antenna is coupled to second receiver 62.Carry out the test identical in step 180 then, to determine whether second receiver, the 62 current DVB signals that just receiving satisfy quality standard with step 160.If measured value surpasses predetermined value T _DVB, then stream turns back to step 110.

If the measured value of test indication in step 180 is no more than predetermined value T _DVB, then this

marker antenna

42 or 44 is not all just receiving and is having above quality threshold demand T _DVBThe DVB signal of enough quality, therefore step 190 selective reception more the antenna of the DVB signal of good quality be used for second receiver 62.Stream turns back to step 110 then.

Can use other antenna choice criteria.For example, when this equipment of needs was only operated with a kind of pattern (as gsm mobile telephone or DVB receiver), control device 50 can be operated the

antenna

42 or 44 that is used to select to provide higher-quality signal, and had not selected to provide above the quality threshold T that is fit to _GSMOr T _DVBSignal.

If need this equipment to operate as gsm mobile telephone and DVB receiver simultaneously in the test of step 110 indication, then flow to into step 160 to 190, wherein about the decision of which antenna being coupled to second receiver 62 based on satisfying the choice criteria that are used for the DVB signal in

step

160 and 180; First transceiver 40 is coupled to 62 untapped antennas 42 of second receiver or 44.

Alternatively, if need this equipment to operate as gsm mobile telephone and DVB receiver simultaneously in the test of step 110 indication, then stream can enter step 120 to 150, wherein about the decision of which antenna being coupled to first transceiver 40 based on satisfying the acceptance criterias that are used for the GSM signal in

step

120 and 140; Second receiver 62 is coupled to 40 untapped antennas 42 of first transceiver or 44.

Alternatively, if need this equipment to operate as gsm mobile telephone and DVB receiver simultaneously in the test of step 110 indication, then choice criteria can be considered GSM signal that is received and the DVB quality of signals that is received.For example, such scheme can be used for guaranteeing to be higher than suitable quality threshold T when possibility _GSMOr T _DVBRank receive GSM signal and DVB signal.

Alternatively or additionally, choice criteria can be considered the value of arbitrary signal that receives of aforesaid first and second receivers 61,62.In this way, this equipment can be carried out selection optimize receiving by external equipment, and this external equipment receives signal that this equipment launches and sends order with the change state or send indication to the measured signal quality of external equipment to this equipment.

With reference to Fig. 4, as indicated above, when the reception of the transmission that need carry out first transmitter 60 simultaneously and second receiver 62, control device 50 is applicable to one of first and second states of selection.If according to equipment 400 thereon operated system demand or according to user's request, need equipment 400 to receive unlike signal simultaneously by first receiver 61 and second receiver 62, then alternatively, control device 50 goes for selecting one of third and fourth state.In the third state, the input of first receiver 61 is coupled to first antenna 42 and is not coupled to second antenna 44, the input of second receiver 62 is coupled to second antenna 44 and is not coupled to first antenna 42.In four condition, the input of first receiver 62 is coupled to second antenna 44 and is not coupled to first antenna 42, the input of second receiver 62 is coupled to first antenna 42 and is not coupled to second antenna 44.Control device 50 is applicable to and uses one or more above-mentioned choice criteria to select between third and fourth state, receives when being used for first and

second receivers

61,62.

If first transceiver 40 switches (also being either-way operation) back and forth between transmitting and receiving, then control device 50 will make equipment 400 switch between one of one of first and second states and third and fourth state.Typically but be not exclusively, the most of the time that is transmitted in of the reception of first receiver 61 and first transmitter 60 can take place via public antenna, although will change and change along with propagation conditions the specific selection of antenna.This with most of the time user mode one and three and state two and four corresponding.Alternatively, reselecting state can be taken place during the conversion between transmitting and receiving.

If first transceiver 40 is operated the emission of first transmitter 60 and the reception of first receiver 61 (also being full-duplex operation) simultaneously, then equipment 400 will be operated or operate with state two and four simultaneously with state one and three simultaneously described with reference to Figure 4, and control device 50 will be controlled these right selections based on the one or more of above-mentioned choice criteria.

With reference to Fig. 6, show second embodiment according to wireless device 500 of the present invention.Except difference described below, the element of second embodiment is with identical above with reference to the element of accompanying drawing 4 described first embodiment, and has identical Reference numeral.Described difference is:

(i) the antenna selector device 46 of Fig. 6 is as a pair of selector switch 48, configuration is used to make win transceiver 40 and second receiver 62 each to be independently coupled to the arbitrary of

antenna

42,44, comprises and is coupled to same or

different antenna

42,44.

(ii) the switching device shifter among

second embodiment

45,46 provides above-mentioned first, second, third and the four condition relevant with first embodiment, and the 5th and the 6th state is provided in addition.In the 5th state, the input of first receiver 61 and the input of second receiver 62 are coupled to first antenna 42 and are not coupled to second antenna 44.In the 6th state, the input of first receiver 61 and the input of second receiver 62 are coupled to second antenna 44 and are not coupled to first antenna 42.This control device is applicable to and uses the one or more of above-mentioned choice criteria, when the reception of the emission that need carry out first transmitter 60 simultaneously and second receiver 62, select one of first and second states, and when needs first and

second receivers

61,62 receive simultaneously, select one of the 3rd, the 4th, the 5th or the 6th state.

If (iii) first transceiver 40 can full-duplex operation (also promptly carrying out the emission of first transmitter 60 and the reception of first receiver 61 simultaneously), then hypothesis meets the configuration to selected two states, can select one of the 3rd, the 4th, the 5th or the 6th state and one of first and second states simultaneously.For example, to first and the selection of the third state simultaneously first transmitter 60 and first receiver 61 are coupled to first antenna 42 and second receiver 62 are coupled to second antenna 44.As another example, the first and the 6th State Selection is coupled to first transmitter 60 first antenna 42 simultaneously and first and

second receivers

61,62 are coupled to second antenna 44.Therefore can take place simultaneously via different antennae by transmitting and receiving of first transceiver 40.Because combination when afoul state and the example that can not realize combinations of states are state 1 and 5.

The embodiment of Fig. 6 can operate with reference to Fig. 5 according to said method, perhaps can use the variation of the method for the 5th and the 6th additional state.

At least one of first and

second receivers

61,62 goes for receiving the signal that is divided into time frame, for example GSM signal or DVB-H signal.In this case, when just receiving such signal, control device 50 goes for only reselecting on the time frame border state of switching

device shifter

45,46, makes the signal that is received do not reselected deterioration.

First transceiver 40 go for the time merotype alternately transmit and receive, and can comprise emission or receive the time period all do not take place, in this time period, can realize power-saving.Similarly, second receiver 62 receives the time period of taking place applicable to time period that alternately receives and nothing, therefore realizes power-saving in the time period of not having reception.Control device (50) only go for when meet the following conditions one or more the time reselect the state of switching device 45,46: first transmitter 60 is not launched; First receiver 61 does not receive; Second receiver 62 does not receive.

Alternatively,

equipment

400 or 500 can comprise second transceiver, and this second transceiver comprises second receiver 62 and second transmitter.In this case, control device 50 and

switching device shifter

45,46 can also be applicable to emission when guaranteeing via the different antennae in the

antenna

42,44 first transmitter 60 and second transmitter to take place, emission when therefore avoiding via

community antenna

42 or 44, and transmit and receive when going for guaranteeing second transmitter and first receiver 61 to take place, transmit and receive when therefore avoiding via second transmitter of

community antenna

42 or 44 and first receiver 61 via the different antennae in the

antenna

42,44.

It maybe can be independently that

measurement mechanism

52,53 can constitute integral body with

respective receiver

61,62.

Can use electronics or motor technology to realize switching

device shifter

45,46.

Although described the present invention, be not the use of eliminating to more antenna, receiver or transmitter with reference to the situation of two antennas and two receivers and optional two transmitters.

Although described embodiment, can also use the present invention in conjunction with other wireless system, for example wireless lan (wlan) or digital audio broadcasting (DAB) with reference to GSM and DVB.

Although described the example criteria of the state that is used for

selection equipment

400 or 500, be not the use of eliminating to other choice criteria.

In this specification and claim, the term before element " " or " one " are not the existence of getting rid of several such elements.And, term " comprise " be not eliminating except listed other element or the existence of step.

The Reference numeral that comprises in the bracket in the claim is used for help understanding and unrestricted.

According to the reading to this bulletin, other modification will be conspicuous to those skilled in the art.Such modification can be introduced other feature known in the field of radio communication and antenna diversity scheme, can use this feature to replace or the additional feature of having described here.

Claims

1. wireless device comprises:

First and second antennas (42,44);

First transceiver (40) comprises first transmitter (60) and first receiver (61);

Second receiver (62);

Switching device shifter (45,46) is provided for providing optional first and second states, wherein,

In described first state, the output of described first transmitter (60) is coupled to described first antenna (42) and is not coupled to described second antenna (44), and the input of described second receiver (62) is coupled to described second antenna (44) and is not coupled to described first antenna (42), and

In described second state, the output of described first transmitter (60) is coupled to described second antenna (44) and is not coupled to described first antenna (42), and the input of described second receiver (62) is coupled to described first antenna (42) and is not coupled to described second antenna (44); And

Control device (50) is applicable between described first and second states and selects, and transmits and receives when being used for described first transmitter (60) and described second receiver (62).

2. equipment as claimed in claim 1, wherein,

Described switching device shifter (45,46) has optional third and fourth state, wherein in the described third state, the input of described first receiver (61) is coupled to described first antenna (42) and is not coupled to described second antenna (44), and the input of described second receiver (62) is coupled to described second antenna (44) and is not coupled to described first antenna (42), and

In described four condition, the input of described first receiver (62) is coupled to described second antenna (44) and is not coupled to described first antenna (42), and the input of described second receiver (62) is coupled to described first antenna (42) and is not coupled to described second antenna (44); And

Described control device (50) is applicable between described third and fourth state and selects, and receives when being used for described first and second receivers (61,62).

3. equipment as claimed in claim 2, wherein,

Described switching device (45,46) has the optional the 5th and the 6th state, wherein,

In described the 5th state, the input of described first receiver (61) and the input of described second receiver (62) are coupled to described first antenna (42) and are not coupled to described second antenna (44), and

In described the 6th state, the input of described first receiver (61) and the input of described second receiver (62) are coupled to described second antenna (44) and are not coupled to described first antenna (42); And

Described control device (50) is applicable between described the 3rd, the 4th, the 5th and the 6th state and selects, and receives when being used for described first and second receivers (61,62).

4. as claim 1,2 or 3 described equipment, comprise measurement mechanism (52,53), be used for generating indication to signal quality by at least one the mass parameter of measuring signal that signal that described first receiver (61) received and described second receiver (62) received, wherein said control device (50) is applicable to the state of selecting described switching device shifter based on described indication to signal quality.

5. as claim 1,2,3 or 4 described equipment, wherein said control device (50) is applicable to the state of selecting described switching device shifter (45,46) in response to the value of the signal that is received.

6. as the arbitrary described equipment of claim 1-5, wherein said control device (50) only be applicable to when meet the following conditions one or more the time reselect the state of described switching device shifter (45,46): described first transmitter 60 is not launched; First receiver 61 does not receive; Second receiver 62 does not receive.

7. as the arbitrary described equipment of claim 1-6, wherein said first transceiver (40) is applicable on mobile telephone network to be operated.

8. as the arbitrary described equipment of claim 1-7, wherein said second receiver (62) is applicable to receiving broadcast signal.

9. equipment as claimed in claim 8, wherein said broadcast singal are digital television signal or digital audio and video signals.