CN102404837A

CN102404837A - Method, device and system for controlling transmitting power of equipment

Info

Publication number: CN102404837A
Application number: CN2011104032135A
Authority: CN
Inventors: 张向东; 常俊仁; 时洁; 刘培
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-12-07
Filing date: 2011-12-07
Publication date: 2012-04-04
Anticipated expiration: 2031-12-07
Also published as: WO2013082985A1; CN102404837B

Abstract

The embodiment of the invention discloses a method, device and system for controlling transmitting power of equipment. The method comprises the steps as follows: acquiring the maximum interference signal power that access equipment can receive on a communication resource which is used for communication between transmitting equipment and receiving equipment; obtaining the maximum transmitting power on the communication resource according to the path loss of the access equipment and the maximum interference signal power; obtaining the minimum transmitting power on the communication resource according to the path loss of the receiving equipment and the minimum receiving power of the receiving equipment, wherein the minimum receiving power of the receiving equipment is the minimum receiving power required by the receiving equipment for receiving signals correctly; and determining the transmitting power used during communication with the receiving equipment based on the maximum transmitting power and the minimum transmitting power. The invention can solve the problems that when the transmitting power is too high, interference can be caused to the receiving equipment or other users, and when the transmitting power is too low, signals can not be sent correctly.

Description

Method, the Apparatus and system of the control of equipment transmitting power

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system of equipment transmitting power control.

Background technology

Device-to-device (Device to Device, communication technology D2D), as Internet of Things use a kind of, obtaining increasing concern.The D2D communication technology mainly is by the communication resource of existing cellular communications network, under the condition of base station, realizes the direct communication between two equipment.The advantage of this communication mode is, need not be established to the private communication channel of base station, saves base station resource.

In the D2D communications applications, the primary problem that solves is exactly how to carry out rational transmitting power control, makes that D2D equipment can be under the situation that does not influence existing cellular communication, the communication resource of multiplexing cellular communication.The D2D communication that existing D2D realization of Communication scheme is D2D network assistance, equipment autonomously; This D2D communication mode provides the information of all communication resources in the network by access device to D2D equipment, and D2D equipment is selected the employed communication resource of communication according to communication resource information independence.

When stating the communication plan of D2D equipment in realization, have following problem in the prior art at least: because D2D equipment is selected the communication resource according to communication resource information independence, so access device can't carry out transmitting power control to D2D equipment.

Summary of the invention

Embodiments of the invention provide a kind of method, Apparatus and system of equipment transmitting power control, can carry out transmitting power control to D2D equipment.

The embodiment of the invention provides a kind of method of equipment transmitting power control, comprising:

Obtain the maximum interference signal power that access device can be accepted on the communication resource, the said communication resource is used for transmitting apparatus and communicates by letter with receiving equipment;

Path loss and said maximum interference signal power according to said access device obtain the maximum transmission power on the said communication resource;

Obtain the minimum emissive power on the said communication resource according to said to the path loss of receiving equipment and the minimum received power of said receiving equipment, the minimum received power of said receiving equipment is that said receiving equipment can correctly receive the required minimum received power of signal;

According to said maximum transmission power and said minimum emissive power, employed transmitting power when confirming to communicate by letter with receiving equipment.

The embodiment of the invention provides a kind of device of equipment transmitting power control, comprising:

Acquiring unit is used to obtain the maximum interference signal power that access device can be accepted on the communication resource, the said communication resource is used for transmitting apparatus and communicates by letter with receiving equipment;

First processing unit is used for obtaining the maximum transmission power on the said communication resource according to path loss and said maximum interference signal power to said access device;

Said first processing unit also is used for obtaining the minimum emissive power on the said communication resource according to said to the path loss of receiving equipment and the minimum received power of said receiving equipment, and the minimum received power of said receiving equipment is that said receiving equipment can correctly receive the required minimum received power of signal;

Said first processing unit also is used for according to said maximum transmission power and said minimum emissive power, employed transmitting power when confirming to communicate by letter with receiving equipment.

The embodiment of the invention provides a kind of system of equipment transmitting power control, comprising:

Transmitting apparatus; Be used to obtain the maximum interference signal power that access device can be accepted on the communication resource; The said communication resource is used for transmitting apparatus and communicates by letter with receiving equipment; Path loss and said maximum interference signal power according to said access device obtain the maximum transmission power on the said communication resource; Obtain the minimum emissive power on the said communication resource according to said to the path loss of receiving equipment and the minimum received power of said receiving equipment; The minimum received power of said receiving equipment is that said receiving equipment can correctly receive the required minimum received power of signal, according to said maximum transmission power and said minimum emissive power, and employed transmitting power when confirming to communicate by letter with receiving equipment;

Receiving equipment is used for communicating according to transmitting power and said transmitting apparatus that said transmitting apparatus is confirmed;

Access device is used for sending the maximum interference signal power that said access device can be accepted to said transmitting apparatus on the communication resource.

Method, the Apparatus and system of the equipment transmitting power control that the embodiment of the invention provides; Can calculate maximum transmission power and minimum emissive power respectively to the path loss of receiving equipment and the minimum received power of receiving equipment according to maximum interference signal power and the transmitting apparatus that transmitting apparatus can be accepted to the path loss and the access device of access device, select to communicate by letter employed transmitting power according to maximum transmission power with minimum emissive power then.Avoided that transmitting power is excessive to cause interference to access device or other users, and the too small situation that can't correctly send signal of transmitting power.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the flow chart of the method for equipment transmitting power control in the embodiment of the invention one;

Fig. 2 is the flow chart of the method for equipment transmitting power control in the embodiment of the invention two;

Fig. 3 is the flow chart of the method for equipment transmitting power control in the embodiment of the invention three;

Fig. 4 is the flow chart of the method for equipment transmitting power control in the embodiment of the invention four;

Fig. 5 is the structural representation of the device of equipment transmitting power control in the embodiment of the invention five;

Fig. 6 is another structural representation of the device of equipment transmitting power control in the embodiment of the invention five;

Fig. 7 is another structural representation of the device of equipment transmitting power control in the embodiment of the invention five;

Fig. 8 is the structural representation of the system of equipment transmitting power control in the embodiment of the invention six.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

Access device described in the embodiment of the invention includes but are not limited to cellular mobile communication, worldwide interoperability for microwave inserts base station or adopting wireless fidelity technology (wireless fidelity in the scenes such as (Worldwide Interoperability for Microwave Access); Wifi) (the Access Point of the access node in; AP), practical application does not limit this.

Embodiment one

The embodiment of the invention provides a kind of method of equipment transmitting power control, and as shown in Figure 1, said method comprises the steps:

101, transmitting apparatus obtains the maximum interference signal power that access device can be accepted on the communication resource.

The said communication resource is used for the communication between the D2D equipment.It is to prepare for the subsequent calculations maximum transmission power that transmitting apparatus obtains said maximum interference signal power.

102, transmitting apparatus obtains the maximum transmission power on this communication resource.

Said maximum transmission power is the maximum interference signal power sum that transmitting apparatus can be accepted to the path loss and the access device of access device.Said transmitting apparatus is at the transmitting power loss value of transmitting apparatus to the path between the access device to the path loss of access device.

103, transmitting apparatus obtains the minimum emissive power on this communication resource.

Said minimum emissive power is the minimum received power sum of transmitting apparatus to the path loss and the receiving equipment of receiving equipment.Said transmitting apparatus is at the transmitting power loss value of transmitting apparatus to the path between the receiving equipment to the path loss of receiving equipment.The minimum received power of said receiving equipment is that receiving equipment can correctly receive the required minimum received power of signal.

104, transmitting apparatus is according to maximum transmission power and minimum emissive power, employed transmitting power when confirming to communicate by letter with receiving equipment.

Need to prove, above-mentioned said transmitting apparatus and said receiving equipment homogeneity, all be subscriber equipment (User Equipment, UE).In the present embodiment, with the UE that transmits as transmitting apparatus, will receive signal UE as receiving equipment, be merely and be convenient to statement, actual D2D carries out interactive type communication in using between the UE, each UE of not only be a transmitting apparatus but also be receiving equipment.

The method of the equipment transmitting power control that the embodiment of the invention provides; Can calculate maximum transmission power and minimum emissive power respectively to the path loss of receiving equipment and the minimum received power of receiving equipment according to maximum interference signal power and the transmitting apparatus that transmitting apparatus can be accepted to the path loss and the access device of access device, select to communicate by letter employed transmitting power according to maximum transmission power with minimum emissive power then.Avoided that transmitting power is excessive to cause interference to access device or other users, and the too small situation that can't correctly send signal of transmitting power.

The method of the embodiment of the invention can (comprise central processing unit (Central Processing Unit by processor; CPU) interior) or application-specific integrated circuit (ASIC) (Application Specific Integrated Circuit; Execution such as ASIC) does not limit this embodiment of the invention.

Embodiment two

The embodiment of the invention provides a kind of method of equipment transmitting power control, and as shown in Figure 2, said method comprises the steps:

201, transmitting apparatus obtain the communication resource that access device sends interference sensitivity information (High Interference Indication, HII) and disturb the overload degree information (Overload Indication, OI).

The D2D equipment autonomously is selected the communication resource in the present embodiment, and the foundation of selecting the communication resource is interference sensitivity information and the interference overload degree information that access device sends.Access device is handed down to transmitting apparatus with the interference sensitive information and the interference overload messages of all user's communications resources in its administration.For example; The interference sensitivity information of all communication resources and interference overload degree information; Form with bitmap is handed down to transmitting apparatus; The interference sensitive information of the 0th first communication resource of assignment in the bitmap tabulation, the interference sensitive information of second communication resource of the 1st assignment, by that analogy.There is 0 and 1 two states each bit position, and it is insensitive that the representative of 0 state disturbs responsive 1 state representative to disturb, and perhaps the representative of 1 state disturbs responsive 0 state representative to disturb insensitive.The interference sensitive information of all communication resources is sent to transmitting apparatus with the form that bitmap tabulates.Disturb overload messages to be handed down to transmitting apparatus, repeat no more here with identical form.

Employed communication resource when 202, transmitting apparatus is confirmed to communicate by letter with receiving equipment.

Transmitting apparatus selects the strongest communication resource of antijamming capability to communicate according to this bitmap tabulation after getting access to the interference sensitivity information of the communication resource and disturbing the bitmap tabulation of overload degree information.

Concrete, transmitting apparatus is selected the insensitive communication resource of one or more interference according to the bitmap tabulation of disturbing sensitivity information, selects the communication resource of one or more interference nonoverloads then according to the bitmap tabulation of disturbing the overload degree information.With disturbing insensitive communication resource and disturbing the communication resource of nonoverload to select subclass as one respectively, get the common factor of two selection subclass then, promptly select and disturb the communication resource insensitive and the interference nonoverload.

If the communication resource of said common factor is more than one, then transmitting apparatus is selected a conduct employed communication resource of communicating by letter with receiving equipment at random in said common factor; If said common factor is empty, then the transmitting apparatus execution in step 201, and the interference sensitivity information of obtaining communication resource and interference overload degree information are selected, once more till the common factor of said subclass is not sky again.

It is emphasized that the communication resource of mentioning in the present embodiment comprises the communication resource that carries out data communication with access device, also comprises the idle communication resource.No matter whether the communication resource is idle; Its antijamming capability all can be embodied in and disturb in sensitivity information and the interference overload degree information; Transmitting apparatus is selected the multiplexing communication resource according to the interference sensitivity information and the interference overload degree information of the communication resource, whether the communication resource is left unused do not distinguish.

What need stress in addition is; Be used in the practical application representing that the information of communication resource annoyance level is not limited to the interference sensitivity information described in the embodiment of the invention or disturbs the overload degree information, and the information of said communication resource annoyance level also can be handed down to transmitting apparatus through other forms.When issuing through other forms; The information of said communication resource annoyance level is not limited to above-mentioned interference sensitivity, disturbs insensitive or disturbs overload, interference nonoverload two states, can divide some grades according to its annoyance level and carry out more careful division and selection.

203, transmitting apparatus receives the maximum interference signal power that access device can be accepted on the communication resource of selecting.

After transmitting apparatus chooses the employed communication resource of communicating by letter with receiving equipment, receive the maximum interference signal power that access device can be accepted on this communication resource.This maximum interference signal power is the maximum interference signal power that access device that access device calculates can be accepted on this communication resource.It is to prepare for the subsequent calculations maximum transmission power that transmitting apparatus receives said maximum interference signal power.

Need to prove; Access device is divided into high, medium and low three annoyance level grades with the communication resource; The maximum interference signal power that access device can be accepted on this annoyance level grade according to the annoyance level rating calculation of the communication resource sends to transmitting apparatus with this maximum interference signal power then.

204, transmitting apparatus receives the reference signal sequence that access device sends.

Access device is to make transmitting apparatus to calculate the path loss of transmitting apparatus to access device according to this reference signal sequence to the purpose that transmitting apparatus sends reference signal sequence, and the content of reference signal sequence itself is also meaningless.Said transmitting apparatus is at the transmitting power loss value of transmitting apparatus to the path between the access device to the path loss of access device.

205, transmitting apparatus calculates the path loss of transmitting apparatus to access device.

After transmitting apparatus receives the reference signal sequence of access device transmission; Can calculate the reference signal sequence received power that receives reference signal sequence; The reference signal sequence transmitting power that access device sends reference signal sequence is by the access device configuration and be handed down to transmitting apparatus, so transmitting apparatus just equals reference signal sequence received power poor that access device sends reference signal sequence transmitting power and the transmitting apparatus reception reference signal sequence of reference signal sequence to the path loss of access device.

206, transmitting apparatus calculates the maximum transmission power on this communication resource.

Said maximum transmission power is the maximum interference signal power that can accept of access device and the transmitting apparatus path loss sum to access device.

207, transmitting apparatus receives the beacon frame that receiving equipment sends.

Receiving equipment can carry the beacon frame transmitting power that receiving equipment sends this beacon frame to all D2D device broadcasts beacon frames except that self in the said beacon frame.All D2D equipment all can receive this beacon frame; The transmitting apparatus that communicates with said receiving equipment calculates the path loss of transmitting apparatus to said receiving equipment according to beacon frame transmitting power of carrying in this beacon frame and the beacon frame received power that receives this beacon frame; Said transmitting apparatus is at the transmitting power loss value of transmitting apparatus to the path between the receiving equipment to the path loss of receiving equipment, i.e. the difference of the transmitting power of receiving equipment emission beacon frame and the received power of this beacon frame of transmitting apparatus reception.And other D2D equipment abandon the beacon frame that receives.

208, transmitting apparatus calculates the path loss of transmitting apparatus to receiving equipment.

The purpose that receiving equipment sends beacon frame is to make transmitting apparatus to calculate transmitting apparatus to the path loss between the receiving equipment according to this beacon frame.Concrete; Transmitting apparatus receives the beacon frame received power of calculating received beacon frame behind the beacon frame; The beacon frame transmitting power of sending this beacon frame with the receiving equipment that carries in the beacon frame then deducts said beacon frame received power and is the path loss of receiving equipment to transmitting apparatus, with the approximate path loss that arrives receiving equipment as transmitting apparatus of this path loss.

Need to prove that beacon frame transmitting power in this step and beacon frame received power are sent beacon frame to receiving equipment, irrelevant with the transmitting power of carrying out power control among the present invention.Reference signal sequence transmitting power in same step 204 and the step 205 and reference signal sequence received power be to reference signal sequence, equally and carry out the transmitting power that power controls among the present invention and have nothing to do.

209, transmitting apparatus calculates the minimum emissive power on this communication resource.

Said minimum emissive power is the minimum received power sum of transmitting apparatus to the path loss and the receiving equipment of receiving equipment.

The minimum received power of said receiving equipment is that receiving equipment can correctly receive the required minimum received power of signal.

210, transmitting apparatus is according to maximum transmission power and minimum emissive power, employed transmitting power when selecting to communicate by letter with receiving equipment.

Concrete, transmitting apparatus compares the maximum transmission power and the minimum emissive power that calculate in step 206 and the step 209:

When maximum transmission power during greater than minimum emissive power, optional power conduct communicates employed transmitting power with receiving equipment in the numerical value interval of said minimax transmitting power.

When maximum transmission power equals minimum emissive power, with said maximum transmission power or minimum emissive power as communicating employed transmitting power with receiving equipment.

When maximum transmission power during less than minimum emissive power, power selection failure, execution in step 201 is to step 210 again, selects maximum transmission power and minimum emissive power on the communication resource that the new communication resource and calculating reselects.

Need to prove that maximum transmit power value is relevant with the maximum interference signal power value that access device can be accepted, and the maximum interference signal power value that access device can be accepted is different because of the difference of communication resource quality; Equally, the minimum emissive power value is relevant to the circuit loss value of receiving equipment with transmitting apparatus, and transmitting apparatus is different because of the difference of communication resource quality to the circuit loss value of receiving equipment.The situation of maximum transmission power less than minimum emissive power can appear thus.When this situation occurring, the selected communication resource of transmitting apparatus can't utilize, and need reselect the communication resource, and calculates the minimax transmitting power according to the new communication resource.

Preferably, after what a transmitting power transmitting apparatus is selected and begun to communicate according to this transmitting power and receiving equipment, can continue to receive the beacon frame of receiving equipment transmission.Carry power adjustment parameter in this beacon frame, transmitting apparatus is according to the size of this power adjustment parameter adjustment transmitting power.

Concrete, when the received power of receiving equipment reception signal can correctly receive the minimum power of this signal less than it, receiving equipment can carry power adjustment parameter and give transmitting apparatus in the beacon frame that sends, require transmitting apparatus to improve transmitting power.Transmitting apparatus improves transmitting power according to this power adjustment parameter, to guarantee that receiving equipment can correctly receive signal.Perhaps, when transmitting power is excessive, though this transmitting power does not surpass maximum transmission power, from reducing equipment power dissipation, improve the purpose of battery flying power, receiving equipment can require transmitting apparatus to reduce transmitting power.Transmitting apparatus is according to this power adjustment parameter, guaranteeing that received power is not less than receiving equipment and can correctly receives under the prerequisite of minimum received power of signal, reduces transmitting power.

Further preferred, after what a transmitting power transmitting apparatus is selected and begun to communicate according to this transmitting power and receiving equipment, still can adjust the communication resource according to the condition of the communication resource.

Concrete; The interference sensitivity information of the communication resource that transmitting apparatus reception access device sends and the bitmap tabulation of disturbing the overload degree information; When if the antijamming capability of the communication resource that tabulation chooses according to new bitmap is better than the present employed communication resource; Transmitting apparatus selects said new communication resource conduct to communicate the employed communication resource with receiving equipment, recomputates maximum transmission power and minimum emissive power and confirms a new transmitting power according to the condition of new traffic resource.

Need to prove that above-mentioned said transmitting apparatus and said receiving equipment homogeneity all are UE.In the present embodiment, with the UE that transmits as transmitting apparatus, will receive signal UE as receiving equipment, be merely and be convenient to statement, actual D2D carries out interactive type communication in using between the UE, each UE of not only be a transmitting apparatus but also be receiving equipment.

The method of the equipment transmitting power control that provides of the embodiment of the invention in addition can also be in the process that transmitting apparatus and receiving equipment communicate, and the size of adjustment transmitting power is correctly sent signal with assurance with the transmitting power of minimum.Perhaps, in the process that transmitting apparatus and receiving equipment communicate, select the stronger communication resource of antijamming capability, can use the best communication resource of communication condition to communicate to guarantee transmitting apparatus and receiving equipment.

The method of the embodiment of the invention can not limited this embodiment of the invention by execution such as processor (comprising CPU) or ASIC.

Embodiment three

The embodiment of the invention provides a kind of method of equipment transmitting power control, and as shown in Figure 3, said method comprises the steps:

301, transmitting apparatus obtains the interference sensitivity information and the interference overload degree information of the communication resource of receiving equipment transmission.

The interference sensitivity information of the said communication resource and interference overload degree information send to said receiving equipment by access device.

Different with embodiment two is; In the present embodiment; Transmitting apparatus need not to communicate with access device; But receive the interference sensitivity information of the said communication resource that access device sends and disturb the overload degree information by receiving equipment, and this information is sent to transmitting apparatus, can get access to the necessary information of selecting the communication resource to guarantee transmitting apparatus.

In the present embodiment, receiving equipment is used to transmit access device information as main equipment, participates in the D2D communication process simultaneously.Said transmitting apparatus obtains access device information as slave unit from receiving equipment, does not directly receive the information that access device sends.Said master-slave equipment is for obtaining the viewpoint definition of access device information from whether directly from access device, irrelevant with the definition of said emitting and receiving equipment, main equipment is said receiving equipment in the present embodiment, and slave unit is said transmitting apparatus.

The D2D equipment autonomously is selected the communication resource in the present embodiment, and the foundation of selecting the communication resource is interference sensitivity information and the interference overload degree information that access device sends.Access device is handed down to receiving equipment with the interference sensitive information and the interference overload messages of all user's communications resources in its administration.For example; The interference sensitivity information of all communication resources and interference overload degree information; Form with bitmap is handed down to receiving equipment; The interference sensitive information of the 0th first communication resource of assignment in the bitmap tabulation, the interference sensitive information of second communication resource of the 1st assignment, by that analogy.There is 0 and 1 two states each bit position, and it is insensitive that the representative of 0 state disturbs responsive 1 state representative to disturb, and perhaps the representative of 1 state disturbs responsive 0 state representative to disturb insensitive.The interference sensitive information of all communication resources is sent to receiving equipment with the form that bitmap tabulates.Disturb overload messages to be handed down to receiving equipment, repeat no more here with identical form.

Employed communication resource when 302, transmitting apparatus is confirmed to communicate by letter with receiving equipment.

If the communication resource of said common factor is more than one, then transmitting apparatus is selected a conduct employed communication resource of communicating by letter with receiving equipment at random in said common factor; If said common factor is empty, then the transmitting apparatus execution in step 301, and the interference sensitivity information of obtaining communication resource and interference overload degree information are selected, once more till the common factor of said subclass is not sky again.

What need stress in addition is; Be used in the practical application representing that the information of communication resource annoyance level is not limited to the interference sensitivity information described in the embodiment of the invention or disturbs the overload degree information; And the information of said communication resource annoyance level also can be handed down to transmitting apparatus through other forms; And when issuing through other forms; The information of said communication resource annoyance level is not limited to above-mentioned interference sensitivity, disturbs insensitive or disturbs overload, interference nonoverload two states, can divide some grades according to its annoyance level and carry out more careful division and selection.

303, transmitting apparatus receives the maximum interference signal power that access device can be accepted on the communication resource of selecting.

After transmitting apparatus chooses the employed communication resource of communicating by letter with receiving equipment, receive the maximum interference signal power that access device can be accepted on this communication resource by receiving equipment.This maximum interference signal power that can accept is the maximum interference signal power that access device that access device calculates can be accepted on this communication resource.It is to prepare for the subsequent calculations maximum transmission power that transmitting apparatus receives said maximum interference signal power.

Need to prove; The communication resource that access device is incited somebody to action is divided into high, medium and low three annoyance level grades; Access device is according to the maximum interference signal power of annoyance level rating calculation on this annoyance level grade of the communication resource; Then this maximum interference signal power that can accept is sent to receiving equipment, and send to transmitting apparatus by receiving equipment.

In the present embodiment, transmitting apparatus need not to communicate with access device, so identical with step 301, said maximum interference signal power is also obtained from access device by receiving equipment, sends to transmitting apparatus then.

304, transmitting apparatus receives the path loss of the receiving equipment of receiving equipment transmission to access device.

Receiving equipment receives the reference signal sequence that access device sends, and calculates the path loss of receiving equipment to access device in view of the above, and said receiving equipment is sent to transmitting apparatus to the path loss of access device.Transmitting apparatus is approximately the path loss of transmitting apparatus to access device with said receiving equipment to the path loss of access device.Said receiving equipment is at the transmitting power loss value of receiving equipment to the path between the access device to the path loss of access device.

Access device is to make receiving equipment to calculate the path loss of receiving equipment to access device according to this reference signal sequence to the purpose that receiving equipment sends reference signal sequence, and the content of reference signal sequence itself is also meaningless.

After receiving equipment receives the reference signal sequence of access device transmission; Can calculate the reference signal sequence received power that receives reference signal sequence; The reference signal sequence transmitting power that access device sends reference signal sequence is by the access device configuration and be handed down to receiving equipment, so receiving equipment just equals reference signal sequence received power poor that access device sends reference signal sequence transmitting power and the receiving equipment reception reference signal sequence of reference signal sequence to the path loss of access device.

305, transmitting apparatus calculates the maximum transmission power on this communication resource.

Transmitting apparatus is receiving maximum interference signal power that access device that receiving equipment sends can accept and receiving equipment to the path loss of access device after, the maximum transmission power that the calculating transmitting apparatus can be launched on this communication resource.

306, transmitting apparatus receives the beacon frame that receiving equipment sends.

307, transmitting apparatus calculates the path loss of transmitting apparatus to receiving equipment.

Need to prove that beacon frame transmitting power in this step and beacon frame received power are sent beacon frame to receiving equipment, irrelevant with the transmitting power of carrying out power control among the present invention.Reference signal sequence transmitting power in the same step 304 and reference signal sequence received power be to reference signal sequence, carries out the transmitting power that power controls among same and the present invention and have nothing to do.

308, transmitting apparatus calculates the minimum emissive power on this communication resource.

309, transmitting apparatus is according to maximum transmission power and minimum emissive power, employed transmitting power when selecting to communicate by letter with receiving equipment.

Concrete, transmitting apparatus compares the minimum emissive power that calculates in maximum transmission power that calculates in the step 305 and the step 308:

When maximum transmission power during less than minimum emissive power, power selection failure, execution in step 301 is to step 309 again, selects maximum transmission power and minimum emissive power on the communication resource that the new communication resource and calculating reselects.

Further preferred, after what a transmitting power transmitting apparatus is selected and is begun to communicate according to this transmitting power and receiving equipment, still can be according to the condition of the communication resource, the replacing communication resource.

Concrete; The interference sensitivity information of all communication resources that transmitting apparatus reception receiving equipment sends and the bitmap tabulation of disturbing the overload degree information; When if the antijamming capability of the communication resource that tabulation chooses according to new bitmap is better than the present employed communication resource; Transmitting apparatus selects said new communication resource conduct to communicate the employed communication resource with receiving equipment, recomputates maximum transmission power and minimum emissive power and confirms a new transmitting power according to the condition of new traffic resource.

Need to prove that above-mentioned said transmitting apparatus and said receiving equipment homogeneity all are UE.In the present embodiment, with the UE that transmits as transmitting apparatus, will receive signal UE as receiving equipment, be merely be convenient to the statement.Actual D2D carries out interactive type communication in using between the UE, each UE of not only is a transmitting apparatus but also be receiving equipment.

In addition, also have another kind of application scenarios: transmitting apparatus receives the relevant information that access device issues as main equipment, and receiving equipment is owing to not communicating with access device and not receiving the relevant information that access device issues as slave unit.Because receiving equipment need not receive the relevant information of access device in D2D communication, so the relevant information that said access device issues is not sent to receiving equipment as the transmitting apparatus of main equipment.Under this kind application scenarios, it is identical with embodiment two to carry into execution a plan, and repeats no more here.

Embodiment four

The embodiment of the invention provides a kind of method of equipment transmitting power control, and as shown in Figure 4, said method comprises the steps:

401, transmitting apparatus obtains the interference sensitivity information and the interference overload degree information of the communication resource of the 3rd equipment transmission.

The interference sensitivity information of the said communication resource and interference overload degree information send to said the 3rd equipment by access device.

Different with embodiment three is; In the present embodiment; Transmitting apparatus need not to communicate with access device; But receive the interference sensitivity information of the said communication resource that access device sends and disturb the overload degree information by the 3rd equipment, and this information is sent to transmitting apparatus, can get access to the necessary information of selecting the communication resource to guarantee transmitting apparatus.Said the 3rd equipment is the 3rd the D2D equipment that is independent of said transmitting apparatus and receiving equipment.When transmitting apparatus and receiving equipment all can't communicate with access device, the interference sensitivity information of the said communication resource that access device is sent by said the 3rd equipment and disturb the overload degree information to send to transmitting apparatus.

In the present embodiment, the 3rd equipment is used to transmit access device information as main equipment, does not participate in the D2D communication process.Said transmitting apparatus and receiving equipment obtain access device information as slave unit from the 3rd equipment, directly do not receive the information that access device sends.Said master-slave equipment is for obtaining the viewpoint definition of access device information from whether directly from access device, irrelevant with the definition of said emitting and receiving equipment, main equipment is said the 3rd equipment in the present embodiment, and slave unit is said transmitting apparatus and said receiving equipment.

The D2D equipment autonomously is selected the communication resource in the present embodiment, and the foundation of selecting the communication resource is interference sensitivity information and the interference overload degree information that access device sends.Access device is handed down to the 3rd equipment with the interference sensitive information and the interference overload messages of all user's communications resources in its administration with the form that bitmap tabulates.For example; The interference sensitivity information of all communication resources and interference overload degree information; Form with bitmap is handed down to the 3rd equipment; The interference sensitive information of the 0th first communication resource of assignment in the bitmap tabulation, the interference sensitive information of second communication resource of the 1st assignment, by that analogy.There is 0 and 1 two states each bit position, and it is insensitive that the representative of 0 state disturbs responsive 1 state representative to disturb, and perhaps the representative of 1 state disturbs responsive 0 state representative to disturb insensitive.The interference sensitive information of all communication resources is sent to the 3rd equipment with the form that bitmap tabulates.Disturb overload messages can be handed down to the 3rd equipment, repeat no more here with identical form.

Step 402 to 409 with embodiment three in step 302 to 309 corresponding identical; Just obtain and send maximum interference signal power that access device can accept, receive reference signal sequence that access device sends, calculate and send transmitting apparatus according to this reference signal sequence and replace with the 3rd equipment, repeat no more here to the executive agent of these three steps of path loss of access device to transmitting apparatus to transmitting apparatus.

In the present embodiment, transmitting apparatus need not to communicate with access device, so identical with step 401, said maximum interference signal power is also obtained from access device by the 3rd equipment (main equipment) and sent to transmitting apparatus (slave unit) then.

Concrete; Transmitting apparatus receives the interference sensitivity information of all communication resources that the 3rd equipment sends and the bitmap tabulation of disturbing the overload degree information; When if the antijamming capability of the communication resource that tabulation chooses according to new bitmap is better than the present employed communication resource; Transmitting apparatus selects said new communication resource conduct to communicate the employed communication resource with receiving equipment, recomputates maximum transmission power and minimum emissive power and confirms a new transmitting power according to the condition of new traffic resource.

Embodiment five

The embodiment of the invention provides a kind of device of equipment transmitting power control, and as shown in Figure 5, said device comprises: the acquiring unit 51 and first processing unit 52, wherein,

Said acquiring unit 51 is used to obtain the maximum interference signal power that access device can be accepted on the communication resource, the said communication resource is used for transmitting apparatus and communicates by letter with receiving equipment.

Receive the maximum interference signal power that access device can be accepted on this communication resource.This maximum interference signal power is the maximum interference signal power that access device that access device calculates can be accepted on this communication resource.Receiving said maximum interference signal power is to prepare for the subsequent calculations maximum transmission power.

Said first processing unit 52 is used for according to transmitting apparatus to the path loss of access device and the maximum transmission power on the maximum interference signal power acquisition communication resource.

Said maximum transmission power is path loss and the maximum interference signal power sum of transmitting apparatus to access device.

Said first processing unit 52 also is used for obtaining the minimum emissive power on the communication resource according to transmitting apparatus to the path loss of receiving equipment and the minimum received power of receiving equipment.

Employed transmitting power when said first processing unit 52 also is used for confirming to communicate by letter with receiving equipment according to maximum transmission power and minimum emissive power.

Further, as shown in Figure 6, said device also comprises:

Second processing unit 61 is used for obtaining access device before the maximum interference signal power that can accept on the communication resource at said acquiring unit 51, the employed communication resource when confirming to communicate by letter with said receiving equipment.

Further, as shown in Figure 7, said second processing unit 61 can comprise:

Receive subelement 71, be used for the interference sensitivity information of received communication resource and disturb the overload degree information.

Handle subelement 72, be used for selecting the employed communication resource according to the interference sensitivity information and the interference overload degree information of the communication resource.

Further, said reception subelement 71 specifically is used to receive the interference sensitivity information of the communication resource that access device sends and disturbs the overload degree information.

Perhaps, receive the interference sensitivity information and the interference overload degree information of the communication resource of receiving equipment transmission, the interference sensitivity information of the said communication resource and interference overload degree information send to receiving equipment by access device.

Perhaps, the interference sensitivity information of the communication resource that the 3rd equipment that receives sends and interference overload degree information, the interference sensitivity information of the said communication resource and interference overload degree information send to the 3rd equipment by access device.

Further, said processing subelement 72 specifically is used for selecting to disturb the communication resource insensitive and the interference nonoverload according to the interference sensitivity information and the interference overload degree information of the communication resource.

Further, said acquiring unit 51 specifically is used to receive the maximum interference signal power that access device that access device sends can be accepted.Perhaps, receive the maximum interference signal power that receiving equipment sends, this maximum interference signal power sends to receiving equipment by access device.Perhaps, receive the maximum interference signal power that the 3rd equipment sends, this maximum interference signal power sends to the 3rd equipment by access device.

Further, said acquiring unit 51 also is used to receive the reference signal sequence that access device sends.

The purpose that access device sends reference signal sequence is to make said first processing unit 52 to calculate the path loss of transmitting apparatus to access device according to this reference signal sequence, and said transmitting apparatus is at the transmitting power loss value of transmitting apparatus to the path between the access device to the path loss of access device.The content of reference signal sequence itself is also meaningless.

Said first processing unit 52 also is used for calculating the path loss of transmitting apparatus to said access device according to the difference of the reference signal sequence received power of the reference signal sequence transmitting power of access device transmission reference signal sequence and reception reference signal sequence.

Further, said acquiring unit 51 also is used to receive the path loss of the receiving equipment of receiving equipment transmission to access device.

Receiving equipment receive reference signal sequence that access device sends and with the difference of the reference signal sequence transmitting power of this reference signal sequence and the reference signal sequence received power that receives this reference signal sequence as the path loss of receiving equipment to access device.

Perhaps, receive the path loss of the 3rd equipment of the 3rd equipment transmission to said access device.

The 3rd equipment receive reference signal sequence that access device sends and with the difference of the reference signal sequence transmitting power of this reference signal sequence and the reference signal sequence received power that receives this reference signal sequence as the path loss of the 3rd equipment to access device.

Further, said acquiring unit 51 also is used to receive the beacon frame that receiving equipment sends, and said beacon frame carries the beacon frame transmitting power that receiving equipment sends beacon frame.

Said first processing unit 52 also is used for calculating the path loss of transmitting apparatus to receiving equipment according to the difference of the beacon frame received power of beacon frame transmitting power and received beacon frame.

Further, said first processing unit 52 specifically is used for when maximum transmission power during greater than minimum emissive power, employed transmitting power when between minimum emissive power and maximum transmission power, selecting to communicate by letter with receiving equipment arbitrarily.Perhaps, when maximum transmission power equals minimum emissive power, with maximum transmission power or minimum emissive power employed transmitting power when communicating by letter with receiving equipment.Perhaps, when maximum transmission power during, reselect the communication resource less than minimum emissive power.

Further, said second processing unit 61 also is used at communication process, the employed communication resource according to the interference sensitivity information that receives and when disturbing the adjustment of overload degree information to communicate by letter with receiving equipment.

Further said acquiring unit 51 also is used at communication process, receives the beacon frame that receiving equipment sends, and carries power adjustment parameter in the said beacon frame.

Said first processing unit 52 also is used for according to power adjustment parameter adjustment transmitting power, and said transmitting power is between minimum emissive power and maximum transmission power.

The device of the equipment transmitting power control that the embodiment of the invention provides; Can calculate maximum transmission power and minimum emissive power respectively to the path loss of receiving equipment and the minimum received power of receiving equipment according to maximum interference signal power and the transmitting apparatus that transmitting apparatus can be accepted to the path loss and the access device of access device, select to communicate by letter employed transmitting power according to maximum transmission power with minimum emissive power then.Avoided that transmitting power is excessive to cause interference to access device or other users, and the too small situation that can't correctly send signal of transmitting power.

The device of the equipment transmitting power control that provides of the embodiment of the invention in addition can also be in the process that transmitting apparatus and receiving equipment communicate, and the size of adjustment transmitting power is correctly sent signal with assurance with the transmitting power of minimum.Perhaps, in the process that transmitting apparatus and receiving equipment communicate, select the stronger communication resource of antijamming capability, can use the best communication resource of communication condition to communicate to guarantee transmitting apparatus and receiving equipment.

The device of the embodiment of the invention can not limited this embodiment of the invention by execution such as processor (comprising CPU) or ASIC.

Embodiment six

The embodiment of the invention provides a kind of system of equipment transmitting power control, and as shown in Figure 8, said system comprises:

Transmitting apparatus 81; Be used to obtain the maximum interference signal power that access device 83 can be accepted on the communication resource; The said communication resource is used for transmitting apparatus 81 and communicates by letter with receiving equipment 82; Obtain the maximum transmission power on the communication resource according to transmitting apparatus 81 to the path loss of access device 83 and maximum interference signal power; Obtain the minimum emissive power on the communication resource according to transmitting apparatus 81 to the path loss of receiving equipment 82 and the minimum received power of receiving equipment 82; The minimum received power of receiving equipment 82 is that receiving equipment 82 can correctly receive the required minimum received power of signal, according to maximum transmission power and minimum emissive power, and employed transmitting power when confirming to communicate by letter with receiving equipment 82.

Further; Employed communication resource when said transmitting apparatus 81 also is used for confirming communicating by letter with said receiving equipment 82; The interference sensitivity information of received communication resource and interference overload degree information; Interference sensitivity information and interference overload degree information according to the communication resource are selected the employed communication resource; Receive the reference signal sequence that access device 83 sends; The reference signal sequence transmitting power of sending reference signal sequences according to access device 83 calculates the path loss of transmitting apparatus 81 to said access device 83 with the difference of the reference signal sequence received power that receives reference signal sequence, receives receiving equipment 82 that receiving equipment 82 the sends path loss to access device 83, receives the beacon frame that receiving equipment 82 sends; Said beacon frame carries the beacon frame transmitting power that receiving equipment 82 sends beacon frames, calculates the path loss that transmitting apparatus 81 arrives receiving equipment 82 according to the difference of the beacon frame received power of beacon frame transmitting power and received beacon frame.

Further; Said transmitting apparatus 81 also is used at communication process; The employed communication resource according to the interference sensitivity information that receives and when disturbing the adjustment of overload degree information communicate by letter with receiving equipment 82 receives the beacon frame of receiving equipment 82 transmissions, carries power in the said beacon frame and adjusts parameter; According to power adjustment parameter adjustment transmitting power, said transmitting power is between minimum emissive power and maximum transmission power.

Receiving equipment 82 is used for communicating according to transmitting power and transmitting apparatus 81 that transmitting apparatus 81 is confirmed.

Access device 83 is used for sending the maximum interference signal power that access device 83 can be accepted to transmitting apparatus 81 on the communication resource.

The system of the equipment transmitting power control that the embodiment of the invention provides; Can calculate maximum transmission power and minimum emissive power respectively to the path loss of receiving equipment and the minimum received power of receiving equipment according to maximum interference signal power and the transmitting apparatus that transmitting apparatus can be accepted to the path loss and the access device of access device, select to communicate by letter employed transmitting power according to maximum transmission power with minimum emissive power then.Avoided that transmitting power is excessive to cause interference to access device or other users, and the too small situation that can't correctly send signal of transmitting power.

The system of the equipment transmitting power control that provides of the embodiment of the invention in addition can also be in the process that transmitting apparatus and receiving equipment communicate, and the size of adjustment transmitting power is correctly sent signal with assurance with the transmitting power of minimum.Perhaps, in the process that transmitting apparatus and receiving equipment communicate, select the stronger communication resource of antijamming capability, can use the best communication resource of communication condition to communicate to guarantee transmitting apparatus and receiving equipment.

Through the description of above execution mode, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computer; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.

Claims

1. the control method of an equipment transmitting power is characterized in that, comprising:

2. the control method of equipment transmitting power according to claim 1 is characterized in that,, before the maximum interference signal power that can accept on the communication resource, also comprises at the said access device that obtains:

The employed communication resource when confirming to communicate by letter with said receiving equipment.

3. the control method of equipment transmitting power according to claim 2 is characterized in that, the said employed communication resource when confirming to communicate by letter with said receiving equipment comprises:

Receive the interference sensitivity information of the said communication resource and disturb the overload degree information;

The employed communication resource according to the interference sensitivity information of the said communication resource and when disturbing the overload degree information to confirm to communicate by letter with said receiving equipment.

4. the control method of equipment transmitting power according to claim 3 is characterized in that, the interference sensitivity information of the said communication resource of said reception is disturbed sensitivity information and disturbed the overload degree information to disturb the overload degree information, comprising:

Receive the interference sensitivity information and the interference overload degree information of the said communication resource of said access device transmission; Perhaps,

Receive the interference sensitivity information and the interference overload degree information of the said communication resource of said receiving equipment transmission, the interference sensitivity information of the said communication resource and interference overload degree information send to said receiving equipment by said access device; Perhaps,

The interference sensitivity information of the said communication resource that the 3rd equipment that receives sends and interference overload degree information, the interference sensitivity information of the said communication resource and interference overload degree information send to said the 3rd equipment by said access device.

5. according to the control method of claim 3 or 4 described equipment transmitting powers; It is characterized in that; The said interference sensitivity information and the employed communication resource when disturbing the overload degree information to confirm to communicate by letter with said receiving equipment according to the said communication resource comprises:

The employed communication resource when selecting to disturb communication resource conduct insensitive and the interference nonoverload to communicate by letter with said receiving equipment.

6. according to the control method of any described equipment transmitting power in the claim 1 to 4, it is characterized in that, saidly obtain the maximum interference signal power that access device can be accepted on the communication resource, comprising:

Receive the said maximum interference signal power that said access device sends; Perhaps,

Receive the said maximum interference signal power that said receiving equipment sends, said maximum interference signal power sends to said receiving equipment by said access device; Perhaps,

Receive the said maximum interference signal power that the 3rd equipment sends, said maximum interference signal power sends to said the 3rd equipment by said access device.

7. according to the control method of any described equipment transmitting power in the claim 1 to 4; It is characterized in that; Before said basis obtains the maximum transmission power on the said communication resource to the path loss of said access device and said maximum interference signal power, also comprise:

Receive the reference signal sequence that said access device sends;

Difference according to the received power of the transmitting power of said reference signal sequence and said reference signal sequence calculates said path loss to said access device.

8. according to the control method of any described equipment transmitting power in the claim 1 to 4; It is characterized in that; Before said basis obtains the maximum transmission power on the said communication resource to the path loss of said access device and said maximum interference signal power, also comprise:

Receive said receiving equipment that said receiving equipment the sends path loss to said access device, the transmitting power of the reference signal sequence that said receiving equipment sends according to said access device to the path loss of said access device calculates with the difference of the received power of the reference signal sequence of the said access device transmission of said receiving equipment reception; Perhaps,

Receive said the 3rd equipment that said the 3rd equipment the sends path loss to said access device, the transmitting power of the reference signal sequence that said the 3rd equipment sends according to said access device to the path loss of said access device calculates with the difference of the received power of the reference signal sequence of the said access device transmission of said the 3rd equipment reception.

9. according to the control method of any described equipment transmitting power in the claim 1 to 4; It is characterized in that; Obtain before the minimum emissive power on the said communication resource, also to comprise to the path loss of receiving equipment and the minimum received power of said receiving equipment according to said said:

Receive the beacon frame that said receiving equipment sends, said beacon frame carries the beacon frame transmitting power that said receiving equipment sends said beacon frame;

Calculate said path loss according to said beacon frame transmitting power and the beacon frame received power that receives said beacon frame to said receiving equipment.

10. according to the control method of any described equipment transmitting power in the claim 1 to 4, it is characterized in that said according to said maximum transmission power and said minimum emissive power, employed transmitting power when confirming to communicate by letter with receiving equipment comprises:

When said maximum transmission power during greater than said minimum emissive power, will be when the arbitrary value conduct between said minimum emissive power and the said maximum transmission power be communicated by letter with said receiving equipment employed transmitting power;

When said maximum transmission power equals said minimum emissive power, with said maximum transmission power or said minimum emissive power employed transmitting power when communicating by letter with said receiving equipment;

When said maximum transmission power during, select the new communication resource less than said minimum emissive power.

11. the control method according to any described equipment transmitting power in the claim 2 to 4 is characterized in that, the said employed communication resource when confirming to communicate by letter with said receiving equipment also comprises:

In communication process, the employed communication resource according to the interference sensitivity information of the communication resource that receives and when disturbing the adjustment of overload degree information to communicate by letter with said receiving equipment.

12. the control method according to any described equipment transmitting power in the claim 1 to 4 is characterized in that, and is said according to said maximum transmission power and said minimum emissive power, employed transmitting power when confirming to communicate by letter with receiving equipment comprises:

In communication process, receive the beacon frame that said receiving equipment sends, carry power adjustment parameter in the said beacon frame;

According to the said transmitting power of said power adjustment parameter adjustment, said transmitting power is between said minimum emissive power and said maximum transmission power.

13. the control device of an equipment transmitting power is characterized in that, comprising:

14. the control device of equipment transmitting power according to claim 13 is characterized in that, also comprises:

Second processing unit was used at the said access device that obtains before the maximum interference signal power that can accept on the communication resource, the employed communication resource when confirming to communicate by letter with said receiving equipment.

15. the control device of equipment transmitting power according to claim 14 is characterized in that, said second processing unit comprises:

Receive subelement, be used to receive the interference sensitivity information of the said communication resource and disturb the overload degree information;

Handle subelement, be used for according to the interference sensitivity information of the said communication resource and the employed communication resource when disturbing the overload degree information to confirm to communicate by letter with said receiving equipment.

16. the control device of equipment transmitting power according to claim 15 is characterized in that, said reception subelement specifically is used to receive the interference sensitivity information of the said communication resource that said access device sends and disturbs the overload degree information; Perhaps,

17. control device according to claim 15 or 16 described equipment transmitting powers; It is characterized in that employed communication resource when said processing subelement specifically is used to select to disturb communication resource conduct insensitive and the interference nonoverload to communicate by letter with said receiving equipment.

18. the control device according to any described equipment transmitting power in the claim 13 to 16 is characterized in that, said acquiring unit specifically is used to receive the said maximum interference signal power that said access device sends; Perhaps,

19. the control device according to any described equipment transmitting power in the claim 13 to 16 is characterized in that, said acquiring unit also is used to receive the reference signal sequence that said access device sends;

Said first processing unit also is used for calculating said path loss to said access device according to the difference of the received power of the transmitting power of said reference signal sequence and said reference signal sequence.

20. control device according to any described equipment transmitting power in the claim 13 to 16; It is characterized in that; Said acquiring unit also is used to receive said receiving equipment that said receiving equipment the sends path loss to said access device, and the transmitting power of the reference signal sequence that said receiving equipment sends according to said access device to the path loss of said access device calculates with the difference of the received power of the reference signal sequence of the said access device transmission of said receiving equipment reception; Perhaps,

21. control device according to any described equipment transmitting power in the claim 13 to 16; It is characterized in that; Said acquiring unit also is used to receive the beacon frame that said receiving equipment sends, and said beacon frame carries the beacon frame transmitting power that said receiving equipment sends said beacon frame;

Said first processing unit also is used for calculating said path loss to said receiving equipment according to said beacon frame transmitting power and the beacon frame received power that receives said beacon frame.

22. control device according to any described equipment transmitting power in the claim 13 to 16; It is characterized in that; Said first processing unit specifically is used for when said maximum transmission power during greater than said minimum emissive power, will be when the arbitrary value conduct between said minimum emissive power and the said maximum transmission power be communicated by letter with said receiving equipment employed transmitting power;

When said maximum transmission power during, reselect the communication resource less than said minimum emissive power.

23. control device according to any described equipment transmitting power in the claim 14 to 16; It is characterized in that; Said second processing unit also is used at communication process, the employed communication resource according to the interference sensitivity information of the communication resource that receives and when disturbing the adjustment of overload degree information to communicate by letter with said receiving equipment.

24. control device according to any described equipment transmitting power in the claim 13 to 16; It is characterized in that; In communication process, said acquiring unit also is used to receive the beacon frame that said receiving equipment sends, and carries power adjustment parameter in the said beacon frame;

Said first processing unit also is used for according to the said transmitting power of said power adjustment parameter adjustment, and said transmitting power is between said minimum emissive power and said maximum transmission power.

25. the control system of an equipment transmitting power is characterized in that, comprising: