WO2014094277A1

WO2014094277A1 - Information transmitting, receiving method and device thereof

Info

Publication number: WO2014094277A1
Application number: PCT/CN2012/087028
Authority: WO
Inventors: 熊竞
Original assignee: 华为技术有限公司
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2014-06-26
Also published as: CN104041145A; CN104041145B

Abstract

Disclosed in the present invention are an information transmitting and receiving method and a device thereof which are used to solve the problem of the downlink path loss calculation inaccuracy. The transmitting method includes: obtaining a reference signal power of a mobile terminal accessing region, where the reference signal power of the accessing region is a real reference signal power of the mobile terminal present location; judging whether the reference signal power of the accessing region is the same as the reference signal power for broadcasting; and when the result is not the same, transmitting the reference signal power of the accessing region to the mobile terminal; thus the mobile terminal can calculate the downlink path loss according to the reference signal power of the accessing region.

Description

Information transmission and reception method and corresponding equipment

The present invention relates to the field of mobile communications, and in particular, to a method for transmitting and receiving information and a corresponding device. Background technique

In the existing Long Term Evolution (LTE) network, in order to reduce mutual interference between intra-frequency cells, one of the methods is to reduce the number of intra-frequency cells under the same coverage. In order to achieve this, it is necessary to merge the original multiple cells into one new cell. Before the merger, the coverage radius of each cell may be different (the coverage radius is usually determined by its reference signal power, the reference signal power is different, and the coverage radius is different). As shown in Figure 1, in this example, three cells are included before the combination: cell 1, cell 2, cell 3, cell 1, cell 2, and cell 3 have different reference signal powers, resulting in different coverage ranges. After combining three cells into one new cell, in order to ensure that its coverage remains intact, there must be three reference signal powers under the new cell.

In the prior art, one cell can only have one reference signal power in the system message broadcast, so the existing scheme can only broadcast the reference signal power of one of the cells before the combination.

For example, the reference signal power is the broadcast cell in the system message:

PDSCH-ConfigCommon:: = SEQUENCE {

referenceSignalPower INTEGER (-60..50),

Pb INTEGER (0..3) The inventors have found in the prior art that if the mobile terminal communicates according to the broadcast reference signal power, many problems will arise. For example, when the mobile terminal performs uplink power transmission, it needs to evaluate its uplink path loss. If the uplink path loss is large, the uplink transmission power is increased. If the uplink path loss is small, the uplink transmission power is decreased. In the actual situation, the UE cannot directly obtain its uplink path loss, and only evaluates its uplink path loss through the downlink path loss. The downlink path loss is obtained by calculating the difference between the power of the reference signal broadcasted in the system message and the power value of the reference signal measured by the actual reception. When the reference signal power used is not accurate, it will cause the calculation of the downlink path loss to be inaccurate, from the problem that its uplink transmit power is too large or too small. Summary of the invention

To this end, an embodiment of the present invention provides a method for transmitting and receiving information and a corresponding device, which are used to solve the technical problem of inaccurate calculation of downlink path loss.

In a first aspect, an embodiment of the present invention provides a method for sending information, including:

Obtaining a reference signal power of the access area of the mobile terminal, where a reference signal power of the access area is an actual reference signal power of a current location of the mobile terminal;

Determining whether the reference signal power of the access area is the same as the reference signal power for broadcasting; when the determination result is different, transmitting the reference signal power of the access area to the mobile terminal, so that the mobile terminal is configured according to The reference signal power of the access area calculates a downlink path loss.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the sending, by the mobile terminal, the reference signal power of the access area includes:

The reference signal power of the access area is transmitted to the mobile terminal by a mobile terminal reconfiguration message or a first configuration message.

With reference to the first aspect, or the first possible implementation manner of the first aspect, in the second possible implementation manner of the foregoing aspect,

Determining whether the access area of the mobile terminal changes, and when the determination result is changed, acquiring reference signal power of the changed access area of the mobile terminal.

In a second aspect, the embodiment of the present invention further provides an information receiving method, where the method includes: receiving, by a mobile terminal, reference signal power of an access area of the mobile terminal that is sent by a network side, and reference signal power of the access area The actual reference signal power of the current location of the mobile terminal;

The mobile terminal calculates the downlink path loss according to the reference signal power of the access area, so according to the second aspect, in the first possible implementation manner of the second aspect, the mobile terminal receives the network side sending The reference signal power of the mobile terminal access area includes:

The mobile terminal receives the mobile terminal reconfiguration message sent by the network side, and includes the reference signal power of the mobile terminal access area in the reconfiguration message.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the receiving, by the mobile terminal, the reference signal power of the mobile terminal access area that is sent by the network side includes: The mobile terminal receives the mobile terminal first configuration message sent by the network side, and includes the reference signal power of the mobile terminal access area in the first configuration message.

In a third aspect, the embodiment of the present invention further provides a network node, including:

a power acquisition unit, configured to obtain a reference signal power of an access area of the mobile terminal, where a reference signal power of the access area is an actual reference signal power of a current location of the mobile terminal;

The determining unit is connected to the power acquiring unit, and configured to determine whether the reference signal power of the access area is the same as the reference signal power used for broadcasting;

a sending unit, configured to be connected to the determining unit, configured to send a reference signal power of the access area to the mobile terminal when the determination result is different, so that the mobile terminal is configured according to the reference signal power of the access area Calculate the downlink path loss.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the sending unit is specifically configured to: send, by using a mobile terminal, a reconfiguration message or a first configuration message, a reference of the access area to the mobile terminal. Signal power.

With the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the power acquiring unit is further configured to determine whether an access area of the mobile terminal is A change occurs, and when the result of the determination is a change, the reference signal power of the changed access area of the mobile terminal is obtained.

In a fourth aspect, the embodiment of the present invention further provides a mobile terminal, including:

a receiving unit, configured to receive reference signal power of the mobile terminal access area sent by the network side, where a reference signal power of the access area is an actual reference signal power of a current location of the mobile terminal;

The computing unit is connected to the receiving unit, and is configured to combine the fourth aspect according to the reference signal power of the access area. In a first possible implementation manner of the fourth aspect, the receiving unit is specifically configured to receive The mobile terminal re-allocation message sent by the network side includes the reference signal power of the mobile terminal access area in the reconfiguration message.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the receiving unit is configured to: receive, by the network side, a mobile terminal first configuration message, where the first configuration message includes the mobile terminal Reference signal power of the access zone.

In a fifth aspect, a network node device is provided, including: a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory, wherein the memory stores a set of program codes, and the processor is configured to invoke a program code stored in the memory, and is executed as follows operating:

Determining whether the reference signal power of the access area is the same as the reference signal power for broadcasting; when the determination result is different, transmitting, by the transmitter, the reference signal power of the access area to the mobile terminal, so that The mobile terminal calculates a downlink path loss according to a reference signal power of the access area.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the performing, by the processor, the reference signal power of the access area sent by the transmitter to the mobile terminal includes:

The reference signal power of the access area is transmitted to the mobile terminal by a mobile terminal reconfiguration message or a first configuration message transmitted by the transmitter.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the performing, by the processor, the obtaining the reference signal power of the mobile terminal access area includes: :

According to a sixth aspect, the present invention provides a mobile terminal, including: a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory, wherein the memory stores one a program code, and the processor is configured to call the program code stored in the memory, and perform the following operations:

Receiving, by the receiver, a reference signal power of the access area of the mobile terminal that is sent by the receiving network, where a reference signal power of the access area is an actual reference signal power of a current location of the mobile terminal;

Calculating a downlink path loss according to the reference signal power of the access area, so as to obtain an uplink transmit power of the mobile terminal according to the downlink path loss.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the performing, by the processor, receiving, by the receiver, a reference signal function of the mobile terminal access area that is sent by the receiving network side The rate of operations includes:

And receiving, by the network side, a mobile terminal reconfiguration message, where the reconfiguration message includes a reference signal power of the mobile terminal access area.

With reference to the sixth aspect, in a second possible implementation manner of the sixth aspect, the performing, by the processor, receiving, by the receiver, the reference signal power of the mobile terminal access area that is sent by the receiving network side includes: :

And receiving, by the network side, a mobile terminal first configuration message, where the reference configuration signal of the mobile terminal access area is included in the first configuration message.

Through the foregoing solution, after detecting, by the network side, that the mobile terminal enters the cell, the actual reference signal power of the cell where the mobile terminal is located is obtained, and when the power of the reference signal is different from the power of the reference signal used for broadcasting to the mobile terminal in the system, The mobile terminal uses the actual reference signal power, so that the mobile terminal calculates the path loss according to the actual reference signal power, improves the accuracy of the path loss calculation, and further ensures that the mobile terminal transmits the signal according to the appropriate uplink transmit power, thereby solving the downlink path loss calculation. Inaccurate technical issues. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic diagram of a conventional multi-cell merging into a new cell;

2 is a schematic diagram of a specific process of an information sending method in an embodiment of the present invention;

3 is a schematic diagram of a specific process of an information receiving method in an embodiment of the present invention;

4 is a schematic diagram of a specific process of a method for transmitting and receiving information according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a specific composition of a network node in an embodiment of the present invention; FIG.

6 is a schematic diagram of a specific composition of a mobile terminal in an embodiment of the present invention;

7 is a schematic diagram of a specific composition of a network node in an embodiment of the present invention;

FIG. 8 is a schematic diagram of a specific composition of a mobile terminal in an embodiment of the present invention. detailed description The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Because only one reference signal power is supported in the system broadcast message in the current protocol, when there is multiple reference signal powers in one cell, the mobile terminal cannot accurately know the actual reference signal power, thereby causing the calculated downlink path loss not to be calculated. accurate. Therefore, in the embodiment of the present invention, a new technical solution is proposed. When it is found that the actual reference signal power is inconsistent with the reference signal power for broadcasting, the mobile terminal is notified, so that the mobile terminal calculates the path loss according to the actual reference signal power. Improve the technical problem of inaccurate calculation of the downlink path loss calculated by its path loss. The following is specifically described by the respective embodiments.

As shown in FIG. 2, it is a specific process diagram of an information sending method in an embodiment of the present invention, where the method includes the following steps:

101. Obtain a reference signal power of an access area of the mobile terminal, and a reference signal power of the access area is an actual reference signal power of a current location of the mobile terminal.

As an optional implementation manner, step 101 may include:

Receiving a signal sent by the mobile terminal, and parsing the signal to obtain a transmit power for transmitting the signal;

Selecting, from the plurality of reference signal powers in the cell in which the mobile terminal is currently located, a reference signal power that is closest to the transmit power, and using the selected reference signal power as the reference signal power of the mobile terminal access region.

For example, the reference signal power in the cell in which the mobile terminal is currently located includes: reference signal power 1, reference signal power 2, and reference signal power 3, and the above transmit power is closest to the reference signal power 3, so that the reference signal power can be selected. 3 as the reference signal power of the mobile terminal access area.

For example, the network side monitors the access area of the mobile terminal in real time, and accordingly obtains the reference signal power of the access area of the mobile terminal accordingly. The mobile terminal is in a movable scenario, and the step may further include: determining whether the access area of the mobile terminal changes, and when the determination result is changed, acquiring the changed access area of the mobile terminal. Reference signal power. For example, when the mobile terminal moves from the access area 1 to the access area 2, it can be determined that the access area of the mobile terminal changes, wherein the network side monitors the access area of the mobile terminal in real time, so Instantly judge the move Whether the access area of the mobile terminal sends a change.

For example, for the cell merging situation as shown in FIG. 1, when the mobile terminal enters the coverage of the cell 1 of the merged new cell, the reference signal power of the mobile terminal access region is obtained as the cell 1 reference signal power 12.2. dBm.

102. Determine whether the reference signal power of the access area is the same as the reference signal power used for broadcasting. Generally, after the cell is merged, the network side selects the reference signal power of one of the first few cells to be combined as the reference signal power for broadcasting (for example, for a broadcast system message), which is selected for broadcasting. The reference signal power can be regarded as the reference signal power for broadcasting of the new cell after cell merging. Taking the cell merging situation shown in FIG. 1 as an example, if the reference signal power for broadcasting in the new cell is the reference signal power of the cell 2 before the merging, when the mobile terminal enters the coverage of the cell 1, The reference signal power of the access area and the reference signal power for broadcasting respectively correspond to the reference signal power of the cell 1 and the reference signal power of the cell 2.

103. When the determination result is different, send the reference signal power of the access area to the mobile terminal, so that the mobile terminal calculates a downlink path loss according to the reference signal power of the access area. For example, the reference signal power of the access area may be transmitted to the mobile terminal by a mobile terminal reconfiguration message or a first configuration message.

Taking the example in the above 102 as an example, since the reference signal power of the cell 1 and the reference signal power of the cell 2 are different, the network side transmits the reference signal power of the access area, that is, the reference signal power of the cell 1, to the mobile terminal.

The solution of the present invention is described from the network side in the above embodiment, and the next embodiment describes the solution from the user terminal side. As shown in FIG. 3, it is a schematic diagram of a specific process of the information receiving method in the embodiment of the present invention. The method is used in a mobile terminal and includes the following steps:

The mobile terminal receives the reference signal power of the mobile terminal access area sent by the network side, where the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

Specifically, in this step, the mobile terminal re-configuration message sent by the network side is received, and the reference signal power of the mobile terminal access area is included in the reconfiguration message; or, the receiving network side sends the The mobile terminal first configures a message, and includes, in the first configuration message, a reference signal power of the mobile terminal access area.

202. The mobile terminal calculates a downlink path loss according to the reference signal power of the access area, so as to As shown in FIG. 4, a specific embodiment of the present invention is further described from both the network side and the terminal side. It includes the following steps:

301. After the user equipment (UE) accesses the cell, the network side monitors the access area of the UE in real time. The UE may be the mobile terminal in the foregoing embodiment.

302. When a reference signal power of an access area of the UE is different from a reference signal power value for broadcasting (for example, for a broadcast system message) or a change of an access area of the UE, causing a change in reference signal power, The PDSCH-ConfigDedicated in the UE reconfiguration message (RRCConnectionReconfiguration) informs the UE of the reference signal power that it should use.

The PDSCH-ConfigDedicated structure as in the embodiment of the present invention is:

PDSCH-ConfigDedicated: -SEQUENCE {

P-a ENUMERATED {dB-6, dB-4dot77, dB-3, dB-ldot77, dB0, dBl, dB2, dB3},

referenceSignalPower INTEGER (-60..50), ie, carries referenceSignalPower in PDSCH-ConfigDedicated, which is the actual reference signal power.

303. After obtaining the new reference signal power by reconfiguring the message, the UE recalculates the downlink path loss, so as to update its uplink transmit power.

It can be seen from the foregoing description that when there is a plurality of reference signal powers in a single cell, the embodiment of the present invention can enable the UE to accurately know the reference signal power used by the UE, so that the downlink path loss can be accurately calculated. Avoid the problem that the uplink power is too large or too small because of the inaccurate calculation of the downlink path loss.

As shown in FIG. 5, it is a schematic diagram of a specific composition of a network node in the embodiment of the present invention, where the network node may be a base station. The network node 1 may include: a power acquiring unit 10, configured to obtain a reference signal power of an access area of the mobile terminal, where a reference signal power of the access area is an actual reference signal power of a current location of the mobile terminal; The determining unit 12 is connected to the power obtaining unit 10, and is configured to determine whether the reference signal power of the access area is the same as the reference signal power for broadcasting (for example, for a broadcast system message); the sending unit 14 The determining unit 12 is configured to send, when the determination result is different, the reference signal power of the access area to the mobile terminal, The mobile terminal calculates a downlink path loss according to the reference signal power of the access area. The power obtaining unit 10 is further configured to determine whether the access area of the mobile terminal changes, and when the determination result is changed, acquire the reference signal power of the changed access area of the mobile terminal. The sending unit 14 is specifically configured to send the reference signal power of the access area to the mobile terminal by using a mobile terminal reconfiguration message or a first configuration message.

The foregoing sending unit 14 may be a transmitter or a transceiver, and the foregoing determining unit 12 may be embedded in the hardware of the base station in hardware or may be stored in the memory of the base station in software, so that the processor can execute the call. The corresponding operation of each of the above modules. The processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like.

FIG. 6 is a schematic diagram of a specific configuration of a mobile terminal according to an embodiment of the present invention. The mobile terminal 2 may include: a receiving unit 20, configured to receive a reference signal power of the mobile terminal access area sent by the network side. The reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal; the calculating unit 22 is connected to the receiving unit 20, and configured to use the reference signal power according to the access area. Calculating a downlink path loss, so as to obtain an uplink transmit power of the mobile terminal according to the downlink path loss.

The receiving unit 20 is specifically configured to receive a mobile terminal reconfiguration message sent by the network side, where the reconfiguration message includes a reference signal power of the mobile terminal access area. Or, the receiving unit 20 is specifically configured to: receive, by the network side, a mobile terminal first configuration message, where the first configuration message includes a reference signal power of the mobile terminal access area.

In the embodiment of the present invention, after detecting that the mobile terminal enters the cell, the network side obtains the actual reference signal power of the cell where the mobile terminal is located, and notifies when the reference signal power is different from the reference signal power broadcast by the system to the mobile terminal. The mobile terminal uses the actual reference signal power, so that the mobile terminal calculates the path loss according to the actual reference signal power, and improves the accuracy of the path loss calculation, thereby ensuring that the mobile terminal transmits the signal according to the appropriate uplink transmit power.

It should be understood that the technical solution of the present invention can be applied to various communication systems, for example, a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. WCDMA (Wandaband Code Division Multiple Access) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) System, Universal Mobile Telecommunications System (UMTS, Universal Mobile) Telecommunication System and the like, the embodiment of the present invention is not limited, but for convenience of description, the embodiment of the present invention uses an LTE network as an example for description. Different network elements can be included in the system. For example, the network elements of the radio access network in LTE (Long Term Evolution) and LTE (Advanced Long Term Evolution) include eNB (eNodeB, evolved base station), WCDMA (Wideband Code Division Multiple Access, The network elements of the wireless access network in the wideband code division multiple access network include an RNC (Radio Network Controller) and a NodeB, similarly, other wireless networks such as WiMax (Worldwide Interoperability for Microwave Access). A similar solution to the embodiment of the present invention may be used, but the related modules in the base station system may be different, and the embodiment of the present invention is not limited.

The receiving unit 20 may be a receiver or a transceiver. The computing unit 22 may be embedded in the hardware of the base station or may be stored in the memory of the base station in software, so that the processor can execute the call. The corresponding operation of each of the above modules. The processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like. As shown in FIG. 7 , it is a schematic diagram of a specific composition of a network node device in the embodiment of the present invention, where the network node device can specifically be a station. The network node device may include: a transmitter 31, a receiver 32, a memory 33, and a processor 34 connected to the transmitter 31, the receiver 32, and the memory 33, respectively, wherein the memory 33 stores a set of program codes, and the processor 34 is used to call the program code stored in the memory 33, and performs the following operations:

Determining whether the reference signal power of the access area is the same as the reference signal power for broadcasting; when the determination result is different, transmitting, by the transmitter 31, the reference signal power of the access area to the mobile terminal, so as to The mobile terminal calculates a downlink path loss according to the reference signal power of the access area.

The operation performed by the processor 34 to transmit the reference signal power of the access area to the mobile terminal by using the transmitter 31 may include:

Sending a mobile terminal reconfiguration message or a first configuration message sent by the transmitter 31 to the mobile terminal The reference signal power sent to the access area.

The operation performed by the processor 34 to obtain the reference signal power of the access area of the mobile terminal may include:

Determining whether the access area of the mobile terminal changes, and when the determination result is changed, acquiring reference signal power of the changed access area of the mobile terminal. FIG. 8 is a schematic diagram of a specific composition of a mobile terminal in an embodiment of the present invention. The mobile terminal may include: a transmitter 41, a receiver 42, a memory 43, and a transmitter 41, a receiver 42, and a memory 43 respectively. The connected processor 44 stores therein a set of program codes, and the processor 44 is configured to call the program code stored in the memory 44 to perform the following operations:

The reference signal power of the mobile terminal access area sent by the receiving network side is received by the receiver 42, where the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

The operation performed by the processor 44 to receive the reference signal power of the mobile terminal access area that is sent by the network side by the receiver 42 may include:

The mobile terminal reconfiguration message sent by the network side is received by the receiver 72, and the reference signal power of the mobile terminal access area is included in the reconfiguration message.

The mobile terminal first configuration message sent by the network side is received by the receiver 72, and the reference signal power of the mobile terminal access area is included in the first configuration message.

It should be noted that the network node device shown in FIG. 7 can be used to implement the method in any of the embodiments provided in the method embodiment shown in FIG. 2. The mobile terminal shown in FIG. 8 can be used to implement the method shown in FIG. Any of the methods provided by the method embodiments, and the descriptions of the reference signal power, the configuration message, the first configuration message, and the like are the same as the above method embodiments, and details are not described herein again.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings are also considered. It is the scope of protection of the present invention.

Claims

Rights request

1. An information sending method, characterized in that the method includes:

Obtain the reference signal power of the mobile terminal access area, where the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

Determine whether the reference signal power of the access area and the reference signal power used for broadcasting are the same; when the determination result is different, send the reference signal power of the access area to the mobile terminal so that the mobile terminal can The reference signal power of the access area is used to calculate the downlink path loss.

2. The method according to claim 1, wherein said sending the reference signal power of the access area to the mobile terminal includes:

The reference signal power of the access area is sent to the mobile terminal through a mobile terminal reconfiguration message or a first configuration message.

3. The method according to claim 1 or 2, wherein obtaining the reference signal power of the mobile terminal access area includes:

Determine whether the access area of the mobile terminal has changed, and when the judgment result is that the access area has changed, obtain the reference signal power of the changed access area of the mobile terminal.

4. An information receiving method, characterized in that the method includes:

The mobile terminal receives the reference signal power of the mobile terminal access area sent by the network side, and the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

The mobile terminal calculates the downlink path loss according to the reference signal power of the access area, so as to

5. The method of claim 4, wherein the mobile terminal receiving the reference signal power of the mobile terminal access area sent by the network side includes:

The mobile terminal receives a mobile terminal reconfiguration message sent by the network side, where the reconfiguration message includes the reference signal power of the mobile terminal access area.

6. The method of claim 4, wherein the mobile terminal receiving the reference signal power of the mobile terminal access area sent by the network side includes:

The mobile terminal receives the mobile terminal first configuration message sent by the network side, and the first configuration message includes the reference signal power of the mobile terminal access area.

7. A network node, characterized in that, the network node includes:

A power acquisition unit, configured to obtain the reference signal power of the mobile terminal access area, where the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

A judgment unit, connected to the power acquisition unit, used to judge whether the reference signal power of the access area is the same as the reference signal power used for broadcast;

A sending unit, connected to the judging unit, configured to send the reference signal power of the access area to the mobile terminal when the judgment result is different, so that the mobile terminal can adjust the reference signal power according to the reference signal power of the access area. Calculate the downstream path loss.

8. The network node according to claim 7, wherein the sending unit is specifically configured to send the reference signal power of the access area to the mobile terminal through a mobile terminal reconfiguration message or a first configuration message.

9. The network node according to claim 7 or 8, characterized in that the power acquisition unit is also used to determine whether the access area of the mobile terminal has changed, and when the determination result is that there has been a change, obtain the The reference signal power of the changed access area of the mobile terminal.

10. A mobile terminal, characterized in that, the mobile terminal includes:

A receiving unit, configured to receive the reference signal power of the mobile terminal access area sent by the network side, where the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

A calculation unit, connected to the receiving unit, used to calculate the reference signal power according to the access area

11. The mobile terminal according to claim 10, wherein the receiving unit is specifically configured to receive a mobile terminal reconfiguration message sent by the network side, and the reconfiguration message includes the mobile terminal access area. reference signal power.

12. The mobile terminal according to claim 10, wherein the receiving unit is specifically configured to receive a mobile terminal first configuration message sent by the network side, and the first configuration message includes the mobile terminal access area. reference signal power.

13. A network node device, characterized in that it includes: a transmitter, a receiver, a memory, and a processor connected to the transmitter, the receiver and the memory respectively, wherein the memory stores a A set of program codes, and the processor is used to call the program code stored in the memory to perform the following operations:

Determine whether the reference signal power of the access area and the reference signal power used for broadcasting are the same; when the determination result is different, send the reference signal power of the access area to the mobile terminal through the transmitter, so that The mobile terminal calculates downlink path loss based on the reference signal power of the access area.

14. The device according to claim 13, wherein the operation performed by the processor to send the reference signal power of the access area to the mobile terminal through the transmitter includes:

The reference signal power of the access area is sent to the mobile terminal through the mobile terminal reconfiguration message or the first configuration message sent by the transmitter.

15. The device according to claim 13 or 14, wherein the operation performed by the processor to obtain the reference signal power of the mobile terminal access area includes:

16. A mobile terminal, characterized in that it includes: a transmitter, a receiver, a memory and a analyzer A processor connected to the transmitter, the receiver and the memory respectively, wherein a set of program codes is stored in the memory, and the processor is used to call the program code stored in the memory, and the execution is as follows operate:

The reference signal power of the mobile terminal access area sent by the network side is received by the receiver, and the reference signal power of the access area is the actual reference signal power of the current location of the mobile terminal;

Calculate downlink path loss according to the reference signal power of the access area, so as to obtain the uplink transmit power of the mobile terminal according to the downlink path loss.

17. The mobile terminal according to claim 16, the operation performed by the processor to receive the reference signal power of the mobile terminal access area sent by the network side through the receiver includes:

Receive a mobile terminal reconfiguration message sent by the network side, where the reconfiguration message includes the reference signal power of the mobile terminal access area.

18. The mobile terminal according to claim 16, the operation performed by the processor to receive the reference signal power of the mobile terminal access area sent by the network side through the receiver includes:

Receive a mobile terminal first configuration message sent by the network side, where the first configuration message includes the reference signal power of the mobile terminal access area.

19. A computer program product, including a computer-readable medium, the computer-readable medium including a set of program codes for executing the method according to any one of claims 1-3.

20. A computer program product, including a computer-readable medium, the computer-readable medium including a set of program codes for executing the method according to any one of claims 4-6.