WO2012068970A1

WO2012068970A1 - Method, system and device for determining snpl

Info

Publication number: WO2012068970A1
Application number: PCT/CN2011/082405
Authority: WO
Inventors: 邢艳萍; 李晓卡
Original assignee: 大唐移动通信设备有限公司
Priority date: 2010-11-22
Filing date: 2011-11-18
Publication date: 2012-05-31
Also published as: CN102480754A; CN102480754B

Abstract

The present application relates to the field of radio communications technologies, and more particularly to a method, system and device for determining an SNPL, to solve the problem in the prior art that, a channel measured when a user equipment calculates a path loss of SNPL is a P-CCPCH channel, the channel having constant transmit power, and therefore the SNPL can only reflect a distance between the user equipment and a base station, causing a low system resource utilization rate and a loss of throughput when a network side performs ROT control according to the SNPL. The method of the present application comprises: a network side determining a transmit power value of an SNPL measurement reference channel; the network side sending, through the SNPL measurement reference channel, a reference signal to a user equipment according to the transmit power value of the SNPL measurement reference channel, to instruct the user equipment to measure a received power value of the SNPL measurement reference channel, and determining an SNPL according to the measured received power value. The method of the present application is capable of increasing the system resource utilization rate and reducing the loss of the throughput.

Description

Method, system and device for determining SNPL The application is submitted to the Chinese Patent Office on November 22, 2010, the application number is 201010554303.X, and the invention name is

The priority of the Chinese Patent Application, which is incorporated herein by reference. The present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and device for determining a serving cell and a neighboring cell path loss (SNPL). BACKGROUND OF THE INVENTION Time Division Synchronized Code Division Multiple Access (Time Division Synchronized Code Division Multiple Access,

TD-SCDMA) High Speed Uplink Packet Access (HSUPA) technology is an uplink enhanced transmission mechanism that implements a dedicated physical channel allocation method compared to the previous Radio Network Controller (RNC). The dynamic scheduling of the base station and the sharing of physical resources improve the transmission efficiency of the uplink.

As shown in Figure 1, the HSUPA scheduling transmission process includes:

Step 101: A user equipment (UE) sends a scheduling request with Scheduling Information (SI), which is used to apply for scheduling resources to the base station. The SI may be carried on an Enhanced Dedicated Transport Channel (E-DCH) E-DCH Random Access Uplink Control Channel (E-RUCCH) or an E-DCH physical uplink channel. (E-DCH Physical Uplink Channel, E-PUCH) is carried.

Step 102: The base station (Node B) performs resource scheduling according to the received scheduling request information, and sends resource permission information on an E-DCH Absolute Grant Channel (E-AGCH).

Step 103: The UE performs an enhanced transport format combination (E-TFC) selection according to the received resource scheduling information, selects a suitable transport block size (Transport Block Size, TBS), and a modulation mode, and then performs coding and modulation. Sending uplink enhanced data on the PUCH;

Step 104: After receiving the E-PUCH, the Node B performs decoding processing, and obtains an acknowledgment (ACK)/non-acknowledgement (NACK) information according to a Cyclic Redundancy Check (CRC), and maps to an E-DCH hybrid after encoding. The Hybrid Automatic Repeat Request (HARQ) response indicator channel (E-HCH) is fed back to the UE.

In this way, the UE completes the data transmission of a scheduled transmission process. The SI information reported by the UE to the network is composed of three parts, as shown in Table 1:

Serving and Neighbour Cell Pathloss (SNPL): Helps the base station estimate the degree of inter-cell interference generated by each UE to allocate power and code channel resources.

UE Power Headroom (UPH): indicates the power difference between the maximum transmit power of the UE and the UE transmit power calculated when β e is equal to 0.

Buffer information, including: Highest priority Logical Channel (HLID); Total E-DCH Buffer Status (TEBS); Highest priority Logical state (Highest priority Logical) Channel Buffer Status, HLBS ).

The SNPL is calculated by the user equipment according to the configuration information of the network side and the measurement result. The neighboring cell to be considered in the SNPL calculation includes all the same-frequency neighboring cells and some of the inter-frequency neighboring cells. The primary carrier of the different-frequency neighboring cells is different from the working carrier of the UE, but the secondary carrier is the same as the working carrier of the UE.

For example, as shown in Table 2 below, the user equipment works on the secondary carrier 1 (frequency point F8) of the cell C1, and there are adjacent small cells C2/C3/C4 around, and their frequency planning is shown in Table 2. Then, the network configures the information of the cell C2/C3/C4 to the user equipment in the measurement control message. C2 is the same-frequency neighboring area of C1, C3/C4 is used as the inter-frequency neighboring area of C1, and since the secondary carrier 2 in C3 is the same as the working carrier of the user equipment, the inter-frequency cell in the measurement control message sent by the network When C3 is configured in the information list, the corresponding unit (IE) "Intra-Secondary Frequency Indicator" is set to TRUE, indicating that there is an auxiliary frequency in C3 that is the same as the working frequency of the user equipment. point. Conversely, since C4 does not contain the same frequency as the user equipment working carrier, the IE "Intra-Secondary Frequency Indicator" is FALSE. When calculating the SNPL, the user equipment needs to consider the path loss measurement result of C2/C3, and does not need to consider the measurement result of C4.

Table 2 Example of cell frequency planning

At present, the user equipment reports the SNPL secondary base station side to perform Raise Over Thermal (ROT) control on the network, and controls the interference level of the user equipment to the neighboring cell. At present, the channel measured by the user equipment when calculating the path loss of the SNPL is a P-CCPCH channel, in order to ensure coverage of the broadcast signal and access and handover of the user equipment, The transmit power of the P-CCPCH channel is constant, and the SNPL can only reflect the distance between the user equipment and the base station. In this case, when the base station (NodeB) schedules the UE data transmission according to the determined SNPL, the ROT control cannot be performed effectively, resulting in a sector. Loss of data throughput.

In summary, the channel measured by the user equipment when calculating the path loss of the SNPL is the P-CCPCH channel, and the transmission power of the channel is constant, so the SNPL can only reflect the distance between the user equipment and the base station, so that the network side can perform according to the SNPL. When the ROT is controlled, the system resource utilization is relatively low, resulting in loss of throughput. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method, system, and device for determining an SNPL, which are used to reduce a throughput loss caused by a relatively low system resource utilization when a network side performs ROT control according to a SNPL.

A method for determining a path loss SNPL of a serving cell and a neighboring cell according to an embodiment of the present invention includes: determining, by a network side, a transmit power value of a reference channel of the SNPL;

The network side sends a reference signal to the user equipment by using the SNPL measurement reference channel according to the SNPL measurement reference channel, and is used to indicate that the user equipment measures the received power value of the SNPL measurement reference channel, according to the measured received power value. Determine the S PL.

Another method for determining an SNPL according to an embodiment of the present invention includes:

The user equipment receives the reference signal by using the SNPL measurement reference channel in each cell participating in the SNPL calculation, and measures the received power value;

The user equipment determines S PL according to the measured received power value.

An apparatus for determining an SNPL according to an embodiment of the present invention includes:

a transmit power determining module, configured to determine a transmit power value of the SNPL measurement reference channel;

a sending module, configured to send, by using the SNPL measurement reference channel, a reference signal to the user equipment, by using the SNPL measurement reference channel, to indicate that the user equipment measures the received power value of the SNPL measurement reference channel, according to the measured received power. The value determines S PL.

Another device for determining an SNPL according to an embodiment of the present invention includes:

a measuring module, configured to receive a reference signal by using an SNPL measurement reference channel in each cell that participates in the SNPL calculation, and measure the received power value;

The SNPL determining module is configured to determine the S PL according to the measured received power value.

A system for determining an SNPL according to an embodiment of the present invention includes:

a network side device, configured to determine a transmit power value of the SNPL measurement reference channel, and send a reference signal by using a SNPL measurement reference channel according to a transmit power value of the SNPL measurement reference channel;

a user equipment, configured to receive a reference signal by using an SNPL measurement reference channel in each cell that participates in the SNPL calculation No., and measure the received power value, and determine the S PL based on the measured received power value.

Since the network side can transmit the reference signal on the SNPL measurement reference channel according to the determined transmit power, the user equipment determines the SNPL according to the received power measured on the SNPL measurement reference channel, so that the network side can improve the ROT control according to the SNPL. Utilization of system resources reduces the loss of throughput. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic flow chart of HSUPA scheduling transmission in the background art;

2 is a schematic structural diagram of a system for determining an SNPL according to an embodiment of the present invention;

3 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

5 is a schematic flowchart of a method for a network side to notify a user equipment to determine an SNPL according to an embodiment of the present invention;

6 is a schematic flowchart of a method for determining an SNPL by a user equipment side according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a SNPL measurement reference channel according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram of a SNPL measurement reference channel according to an embodiment of the present invention. In the embodiment of the present invention, the network side sends a reference signal to the user equipment through the corresponding SNPL measurement reference channel according to the determined transmit power value of the SNPL measurement reference channel, and the user equipment separately uses the SNPL measurement reference in the cell calculated by each participating SNPL. The channel measures the received power value and determines the SNPL based on the measured received power value. Since the network side can transmit the reference signal on the SNPL measurement reference channel according to the determined transmit power, the user equipment determines the SNPL according to the received power measured on the SNPL measurement reference channel, so that the network side can perform the ROT control according to the SNPL, and the system can be improved. Utilization of resources.

In the following description, the implementation of the cooperation between the network side and the user equipment side will be described first. Finally, the implementations from the network side and the user equipment side will be described separately, but this does not mean that the two must be implemented together. In fact, When the network side is implemented separately from the user equipment side, the problems existing on the network side and the user equipment side are also solved, but when the two are combined, a better technical effect is obtained.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

As shown in FIG. 2, the system for determining the SNPL in the embodiment of the present invention includes: a network side device 10 and a user equipment 20. The network side device 10 is configured to determine a transmit power value of the SNPL measurement reference channel, and send a reference signal by using a corresponding SNPL measurement reference channel according to the transmit power value.

The user equipment 20 is configured to receive a reference signal by using an SNPL measurement reference channel in each cell that participates in the SNPL calculation, and measure a received power value, and determine an S PL according to the measured received power value. The network side device 10 first determines the measured parameter value, and then determines the reference power value according to the measured parameter value. The measured parameter value may be determined by the uplink measurement result or the scheduling information, or may be notified by the RNC to notify the network side device 10.

The measurement reference value is a value indicating the performance of the cell, such as a value indicating a cell load, a value indicating a cell interference, and the like.

If it is a value indicating the cell load, the measurement reference value may be: the number of users, the average user rate, the Received Total Wide Band Power (RTWP), and the like.

If it is a value indicating the interference of the cell, the measurement reference value may be: Interference Signal Code Power (ISCP) and the like.

The measured parameter value is further divided into a measured parameter value of the cell and a measured parameter value of the carrier in the cell.

If the measured parameter value is the measured parameter value of the cell, the network side device 10 determines the reference power value corresponding to the measured parameter value range to which the measured parameter value of the cell belongs according to the preset relationship between the measured parameter value range and the reference power value. And determining, according to the reference power value, a transmit power value of the SNPL measurement reference channel corresponding to the cell.

For example, if the cell is a single-carrier cell, the network-side device 10 performs measurement on the carrier, determines a measurement parameter value, and uses the obtained measurement parameter value as a measurement parameter value of the cell.

Correspondingly, after the network side device 10 determines the transmit power value according to the reference power value corresponding to the measured parameter value of the cell, according to the determined transmit power value, the reference signal is sent by the SNPL measurement reference channel in the carrier of the cell.

For example, if the cell is a multi-carrier cell, the network-side device 10 can perform measurement on each carrier, determine the measurement parameter value corresponding to each carrier, and then measure the average value, the maximum value, the minimum value, and all the measured parameter values. One of the sums is the measured parameter value of the cell.

Correspondingly, after determining the transmit power value according to the reference power value corresponding to the measured parameter value of the cell, the network side device 10 sends the SNPL measurement reference channel with the same transmit power value on each carrier, or only on one of the carriers. The determined transmit power is transmitted to the SNPL measurement reference channel.

It is assumed that cell 1 has three carriers A, B and C. The measured parameter value corresponding to carrier A is A1, the measured parameter value corresponding to carrier B is B 1 , and the measured parameter value corresponding to carrier C is Cl. Determining, according to Al, B 1 and C1, that the measured parameter value of the cell is Z, and determining that the transmit power value of the cell is X according to Z, the network side device 10 transmits the SNPL measurement reference channel by using X on the carriers A, B, and C, respectively. Or send the SNPL measurement reference channel with X on only one carrier, such as A.

If the measured parameter value is a measured parameter value of the carrier, the network side device determines, according to a preset relationship between the preset measured parameter value range and the reference power value, a range of the measured parameter value to which the measured parameter value of each carrier in the cell belongs. Referring to the power value, and determining a transmit power value of the SNPL measurement reference channel corresponding to each carrier in the cell according to the reference power value.

For example, if the cell is a multi-carrier cell, the network-side device 10 can perform measurement on each carrier to determine each carrier. The value of the measured parameter corresponding to the wave.

Correspondingly, after the network side device 10 determines the transmit power value according to the reference power value corresponding to the measured parameter value corresponding to each carrier, the S PL measurement reference channel is sent on each carrier by using the transmit power value corresponding to the carrier.

It is assumed that cell 1 has three carriers A, B and C. The measured parameter value corresponding to carrier A is A1, the measured parameter value corresponding to carrier B is B1, and the measured parameter value corresponding to carrier C is Cl. Determining, according to A1, the reference power value of the carrier A is A2, determining that the reference power value of the carrier B is B2 according to B1, determining that the reference power value of the carrier C is C2 according to C1, and transmitting the reference channel corresponding to the SNPL corresponding to the carrier A determined according to A2. The power value is A3, the transmit power value of the SNPL measurement reference channel corresponding to the carrier A determined according to B2 is B3, and the transmit power value of the SNPL measurement reference channel corresponding to the carrier A determined according to C2 is C3, and the network side device 10 is on the carrier. A corresponding SNPL measurement reference channel uses A3 to transmit a reference signal, and the network side device 10 uses B3 to transmit a reference signal on the SNPL measurement reference channel corresponding to carrier B, and the network side device 10 is on the SNPL measurement reference channel corresponding to carrier C.发送Use C3 to send the reference signal.

In an implementation, the SNPL measurement reference channel corresponding to each carrier in the cell may be concentrated on one carrier in the cell; the SNPL measurement reference channel corresponding to each carrier in the cell may also be on a respective carrier, that is, for one carrier. The SNPL measurement reference channel corresponding to the carrier in the cell is on the carrier. For example, carriers A and B, the SNPL measurement reference channel corresponding to carrier A and the SNPL measurement reference channel corresponding to carrier B may all be on carrier A; and the SNPL measurement reference channel corresponding to carrier A may be on carrier A, and carrier B corresponds to The SNPL measurement reference channel is on carrier B.

The reference power value may be a reference power value or a power difference value.

If the reference power value is the reference power value, the network side device 10 takes the reference power value as the transmission power value.

Correspondingly, the user equipment 20 determines the received power value of the SNPL measurement reference channel in the serving cell and the received power value of the SNPL measurement reference channel in each neighboring cell, and determines the S PL according to the determined received power value.

Specifically, the user equipment 20 may determine one of a mean value, a maximum value, a minimum value, and a received power of all neighboring cells of the SNPL measurement reference channel in each neighboring cell, and then measure the SNPL in the serving cell. The received power value of the reference channel is divided by the determined received power value to obtain S PL .

Specifically, the SNPL can be determined according to one of the following formulas 1 to 4.

R

Φ―

n=l..N where R is the received power of the S PL measurement reference channel in the serving cell, and Rn is the received power of the S PL measurement reference channel in the neighboring cell n.

Specifically, which formula can be pre-agreed in the protocol, the network side device 10 and the user equipment 20 can also be negotiated, and the user equipment 20 can also be notified by the network side device 10.

If the reference power value is the power difference value, the network side device 10 determines the transmission power value based on the power difference value and the power value of the reference channel.

Specifically, the network side device 10 may use the sum of the power difference value and the power value of the reference channel as the transmission power value; the network side device 10 may also use the difference between the power value and the power difference value of the reference channel as the transmission power value.

Correspondingly, the user equipment 20 may determine the path loss value of each cell according to the power value of the reference channel and the measured received power value of the SNPL measurement reference channel in each cell, and determine according to the determined path loss value of each cell. S PL„

Specifically, after determining the received power value of each cell, the user equipment 20 separately compares the received power value of the SNPL measurement reference channel in each cell with the power value of the reference channel, and obtains a value as each cell. The equivalent path loss value is then according to the formula S PL.

mmU

n=l..N

Lserv formula six. Where ^Φ is SNPL, J is the path loss measurement result of the serving cell, and Ln is the path loss measurement result of the neighboring cell n. Specifically, which formula can be pre-agreed in the protocol, the network side device 10 and the user equipment 20 can also be negotiated, and the user equipment 20 can also be notified by the network side device 10.

For example, there are two cells A and B. The received power value of the SNPL measurement reference channel in cell A is A1, the power value of the reference channel is C, and the received power value of the SNPL measurement reference channel in cell B is B1, and the power value of the reference channel. If D, the value obtained by |A1-C| is used as the path loss value of cell A, and the value obtained by |D-B1| is used as the path loss value of cell B. The path loss values of cell A and cell B are brought into equation 5 or formula 6 to obtain S PL.

The reference channel can be any downlink physical channel. Preferably, the reference channel is a P-CCPCH. Because the transmit power of the P-CCPCH channel is constant, and the network notifies the user equipment of the transmit power of the P-CCPCH channel. The power of other downlink channels is generally variable, determined in real time by the base station side, and the user equipment has no prior information.

The network side device 10 may determine the location of the S PL measurement reference channel in the cell according to the S PL parameter information; the SNPL parameter information may be specified in the protocol in advance, or may be notified by the RNC; the SNPL parameter information includes but is not limited to the following information. One or more of:

Frequency points, subframes, time slots, and code channel resources.

In implementation, user equipment 20 determines the location of the SNPL measurement reference channel in the cell based on the SNPL parameter information. The SNPL measurement reference channel used by the user equipment 20 may be specified in the protocol in advance, or may be notified to the user equipment 20 by the network side device 10 or the RNC.

The network side device 10 may determine the transmit power value in real time, and send a reference signal according to the determined transmit power value in each subframe; the network side device 10 may also smooth the measured parameter value, and determine the transmit power by using the smoothed result. The value of the measurement parameter value may also be periodically notified to the network side device 10 by the RNC, and the network side device 10 determines the transmission power of the SNPL measurement reference channel according to the result of the RNC notification.

After determining the SNPL measurement reference channel corresponding to the cell, the network side device 10 may send a reference signal to the user equipment according to the corresponding transmit power value in the middle (Midamble) code part and the data part of the SNPL measurement reference channel corresponding to the cell, See Figure 7 for details.

For example, it can be agreed that the SNPL measurement reference channel permanently occupies the code channels of the 3rd and 4th SF16 of the primary carrier time slot 0. The data portion of the channel can be filled in according to a predefined data pattern or the network side device 10 can be filled with arbitrary data. Further, the SNPL measurement reference channel of the primary carrier resource may use time division multiplexing as the SNPL measurement reference channel of different carriers.

Correspondingly, the user equipment 20 receives the signals of the 3rd and 4th SF16 code channels of the time slot 0 and measures the received power. After determining the SNPL measurement reference channel corresponding to the cell, the network side device 10 may send a reference signal to the user equipment according to the corresponding transmit power value in the Midamble code portion of the SNPL measurement reference channel corresponding to the cell. For details, refer to FIG. 8.

For example, only the midamble code portion transmits a signal, and the data portion does not transmit a signal. The midamble portion of the reference signal may be a cyclic shift result of the basic Midamble code used by the cell, or may be a cyclic shift of another basic Midamble code other than the basic midamble code used by the cell. The basic midamble code and cyclic shift information used in particular can be specified in the protocol or pre-configured to the network side device 10 and the user equipment 20.

Of course, when the midamble code portion and the data portion transmit signals, the midamble code portion can also transmit signals in the above manner.

The network side device 10 of the embodiment of the present invention may be a base station (such as a macro base station, an evolved base station, a home base station, etc.). It can also be a relay (RN) device, but also other network-side devices.

Based on the same inventive concept, the network side device, the user equipment, and the method for determining the S PL are further provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the system for determining the S PL, the devices and methods are Implementation can refer to the implementation of the system, and the repetition will not be repeated.

As shown in FIG. 3, the network side device of the embodiment of the present invention includes: a transmit power determining module 100 and a sending module 110. The transmit power determining module 100 is configured to determine a transmit power value of the SNPL measurement reference channel.

The sending module 110 is configured to send, by using a corresponding SNPL measurement reference channel, a reference signal to the user equipment according to the transmit power value, to indicate that the user equipment measures the corresponding received power value, and determines according to the measured received power value.

S PL„

The transmit power determining module 100 may determine, according to a preset correspondence between the measured parameter value range and the reference power value, a reference power value corresponding to the measured parameter value range to which the measured parameter value of the cell belongs, and determine the cell according to the reference power value. The corresponding SNPL measures the transmit power value of the reference channel.

The transmit power determining module 100 may further determine, according to a preset correspondence between the measured parameter value range and the reference power value, a reference power value corresponding to the range of the measured parameter value to which the measured parameter value of each carrier belongs, and according to the reference power. The value determines the transmit power value of the SNPL measurement reference channel corresponding to each carrier in the cell.

The SNPL measurement reference channel corresponding to each carrier in the cell is on one carrier in the cell; or

For one carrier, the SNPL measurement reference channel corresponding to the carrier in the cell is on the carrier.

When the reference power value is the reference power value, the transmit power determining module ₁₀₀ uses the reference power value as the transmit power value; when the reference power value is the power difference, the transmit power determining module 100 determines the power value according to the power difference and the reference channel. Determine the transmit power value.

The sending module 110 sends a reference signal to the user equipment according to the corresponding transmit power value in the Midamble code part of the SNPL measurement reference channel; or sends the reference signal to the user equipment according to the corresponding transmit power value in the Midamble code part and the data part of the SNPL measurement reference channel. Reference signal.

The sending module 110 may further send the SNPL parameter information of the SNPL measurement reference channel of each cell to the user equipment.

As shown in FIG. 4, the user equipment in the embodiment of the present invention includes: a measurement module 200 and an SNPL determination module 210. The measuring module 200 is configured to respectively receive a reference channel by using an SNPL measurement reference channel in each cell that participates in the SNPL calculation, and measure the received power value.

The SNPL determining module 210 is configured to determine the S PL according to the received power value measured by the measurement module 200.

The SNPL determining module 210 determines a path loss value of each cell according to the power value of the reference channel and the measured received power value of each SNPL measurement reference channel, and determines the S PL according to the determined path loss value of each cell.

The SNPL determination module 210 determines a received power value of the SNPL measurement reference channel in the serving cell and a received power value of the SNPL measurement reference channel in each neighboring cell, and determines the S PL according to the determined received power value. The measurement module 200 determines, according to the S PL parameter information, an S PL measurement reference channel in each cell participating in the S PL calculation.

As shown in FIG. 5, the method for the network side to notify the user equipment to determine the SNPL includes the following steps: Step 501: The network side determines a transmit power value of the SNPL measurement reference channel.

Step 502: The network side sends a reference signal to the user equipment by using the corresponding SNPL measurement reference channel according to the transmit power value, and is used to indicate that the user equipment measures the corresponding received power value, and determines the S PL according to the measured received power value.

In step 501, the network side first determines the measured parameter value of the cell, and then determines the reference power value of each cell according to the measured parameter value.

If the measured parameter value is the measured parameter value of the cell, in step 501, the network side determines, according to the corresponding relationship between the preset measured parameter value range and the reference power value, a reference corresponding to the measured parameter value range to which the measured parameter value of the cell belongs. And a power value, and determining, according to the reference power value, a transmit power value of the SNPL measurement reference channel corresponding to the cell.

In step 502, after determining the transmit power value according to the reference power value corresponding to the measured parameter value of the cell, the network determines the SNPL measurement reference channel in the carrier of the cell, and sends the reference signal according to the determined transmit power value.

For example, in the step 501, the network side performs measurement on the carrier, determines a measurement parameter value, and uses the obtained measurement parameter value as a measurement parameter value of the cell. In step 502, the network side determines the cell. The SNPL in the carrier measures the reference channel and transmits a reference signal based on the determined transmit power value.

For example, if the cell is a multi-carrier cell, in step 501, the network side may perform measurement on each carrier, determine the measurement parameter value corresponding to each carrier, and then measure, average, maximum, minimum, and all measurements of the parameter values. One of the sum of the parameter values is used as the measured parameter value of the cell; in step 502, the network side determines the SNPL measurement reference channel corresponding to each carrier of the cell, and uses the same on the SNPL measurement reference signal corresponding to each carrier. The transmit power value sends a reference signal.

If the measured parameter value is the measured parameter value of the carrier, in step 501, the network side device determines, according to the preset relationship between the measured parameter value range and the reference power value, the measurement parameter to which the measured parameter value of each carrier in the cell belongs. And a reference power value corresponding to the value range, and determining, according to the reference power value, a transmit power value of the SNPL measurement reference channel corresponding to each carrier in the cell.

For example, in the step 501, the network side may perform measurement on each carrier to determine a measurement parameter value corresponding to each carrier. In step 502, the network side device 10 determines a measurement parameter value corresponding to each carrier. After the corresponding reference power value determines the transmit power value, the SNPL measurement reference channel corresponding to each carrier of the cell is determined, and the reference signal is transmitted on each carrier by using the transmit power value corresponding to the carrier.

In an implementation, the SNPL measurement reference channel corresponding to each carrier in the cell may be concentrated on one carrier in the cell; the SNPL measurement reference channel corresponding to each carrier in the cell may also be on a respective carrier, that is, for one carrier. The SNPL measurement reference channel corresponding to the carrier in the cell is on the carrier. The reference power value may be a reference power value or a power difference value.

If the reference power value is the reference power value, in step 501, the network side uses the reference power value as the transmit power value. If the reference power value is the power difference value, in step 501, the network side determines the transmit power value based on the power difference value and the power value of the reference channel.

Specifically, the network side may use the sum of the power difference value and the power value of the reference channel as the transmit power value; the network side may also use the difference between the power value and the power difference value of the reference channel as the transmit power value.

The reference channel can be any downlink physical channel. The preferred reference channel is the P-CCPCH.

The network side may determine the location of the S PL measurement reference channel in the cell according to the S PL parameter information; the SNPL parameter information may be specified in the protocol in advance, or may be notified by the RNC.

Further, the network side may notify the user equipment of the SNPL parameter information.

The network side may determine the transmit power value from time to time, and send a reference signal according to the determined transmit power value in each subframe; the network side may also smooth the measured parameter value, and use the smoothed result to determine the transmit power value.

In step 502, after determining the SNPL measurement reference channel corresponding to the cell, the network side may send a reference signal to the user equipment according to the corresponding transmit power value in the Midamble code part and the data part of the SNPL measurement reference channel corresponding to the cell, specifically See Figure 7.

After determining the SNPL measurement reference channel corresponding to the cell, the network side may send a reference signal to the user equipment according to the corresponding transmit power value in the Midamble code part of the SNPL measurement reference channel corresponding to the cell. For details, refer to FIG. 8.

As shown in FIG. 6, the method for determining the SNPL on the user equipment side of the embodiment of the present invention includes the following steps:

Step 601: The user equipment separately receives the reference signal by using the SNPL measurement reference channel in each cell that participates in the SNPL calculation, and measures the received power value.

Step 602: The user equipment determines the S PL according to the measured received power value.

The transmit power of the network side transmit reference signal is determined according to the reference power value.

If the reference power value is the reference power value, in step 601, the user equipment determines the received power value of the SNPL measurement reference channel in the serving cell and the received power value of the SNPL measurement reference channel in each neighboring cell; in step 602, the user equipment determines The received power value determines S PL.

Specifically, the user equipment may determine one of a mean value, a maximum value, a minimum value, and a received power of all neighboring cells of the SNPL measurement reference channel in each neighboring cell, and then use the SNPL measurement reference in the serving cell. The received power value of the channel is divided by the determined received power value to obtain S PL .

Specifically, the S PL can be determined according to one of the formulas one to four.

If the reference power value is the power difference value, in step 602, the user equipment determines the path loss value of each cell according to the power value of the reference channel and the measured received power value of the SNPL measurement reference channel in each cell, and according to the determined each The path loss value of each cell determines the SNPL. Specifically, after determining the received power value of each cell, the user equipment separately compares the received power value of the S PL measurement reference channel in each cell with the power value of the reference channel, and obtains a value as each cell. The equivalent path loss value is then determined according to Equation 5 or Equation 6.

The S PL measurement reference channel of each cell may be specified in the protocol in advance, or may be notified by the network side. If the network side notifies, in step 601, the user equipment determines, according to the SNPL parameter information of each cell sent by the network side, the SNPL measurement reference channel in each cell participating in the SNPL calculation.

After the step 602, the user equipment can report the SNPL to the network side, and the network side performs ROT control according to the SNPL.

Among them, FIG. 5 and FIG. 6 can synthesize a process to form a new method for determining the SNPL, that is, steps 501 and 502 are performed first, and steps 601 and 602 are executed.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be construed as including the preferred The embodiments and all changes and modifications that fall within the scope of the invention.

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

Claims

Rights request

A method for determining a path loss S PL of a serving cell and a neighboring cell, the method comprising: determining, by the network side, a transmit power value of the S PL measurement reference channel;

The method according to claim 1, wherein the determining, by the network side, the transmit power value of the SNPL measurement reference channel comprises:

Determining, by the network side, a reference power value corresponding to the measurement parameter value range to which the measurement parameter value of the cell belongs according to the correspondence between the preset measurement parameter value range and the reference power value, and determining, according to the reference power value, the corresponding cell The SNPL measures the transmit power value of the reference channel.

Determining, by the network side, a reference power value corresponding to a range of measurement parameter values to which the measurement parameter value of each carrier in the cell belongs according to a preset relationship between the measured parameter value range and the reference power value, and determining, according to the reference power value, the reference power value The SNPL corresponding to each carrier in the cell measures the transmit power value of the reference channel.

The method according to claim 3, wherein the SNPL measurement reference channel corresponding to each carrier in the cell is on one carrier in the cell; or

For each carrier, the SNPL measurement reference channel corresponding to the carrier in the cell is on the carrier.

5. The method of any of claims 2 to 4, characterized in that

When the reference power value is & the quasi-power value, the network side uses the reference power value as the transmit power value; when the reference power value is the power difference value, the network side according to the power difference value and the reference channel The power value determines the transmit power value.

6. The method according to claim 5, wherein the SNPL measurement reference channel is a physical channel; and the reference channel is a common control physical channel P-CCPCH.

The method according to claim 1, wherein the transmitting, by the network side, the reference signal comprises: the network side is in an intermediate Midamble code part of the SNPL measurement reference channel, and measuring a transmit power value of the reference channel according to the SNPL The user equipment sends a reference signal.

The method according to claim 1, wherein the transmitting, by the network side, the reference signal comprises: the network side measuring an intermediate Midamble code part and a data part of the reference channel in the SNPL, and measuring the transmission of the reference channel according to the SNPL The power value sends a reference signal to the user equipment.

The method according to any one of claims 1 to 4, wherein the method further comprises: transmitting, by the network side, the S PL of the S PL measurement reference channel of each cell to the user equipment. Parameter information.

A method for determining a path loss SNPL of a serving cell and a neighboring cell, the method comprising: the user equipment receiving a reference signal by using an SNPL measurement reference channel in a cell that participates in the SNPL calculation, and measuring a received power value. ;

The method according to claim 10, wherein the determining, by the user equipment, the SNPL according to the measured received power value comprises:

Determining, by the user equipment, a path loss value of each cell according to a power value of the reference channel and a measured received power value of each SNPL measurement reference channel;

The user equipment determines the S PL according to the determined path loss value of each cell.

Determining, by the user equipment, a received power value of the SNPL measurement reference channel in the serving cell and a received power value of the SNPL measurement reference channel in each neighboring cell;

The user equipment determines S PL based on the determined received power value.

The method according to any one of claims 10 to 12, wherein the method further comprises: the user equipment determining, according to the SNPL parameter information, an SNPL measurement reference channel in each cell participating in the SNPL calculation.

The method according to claim 13, wherein the SNPL parameter information is specified in the protocol in advance, or is notified to the user equipment by the network side.

A device for determining a path loss SNPL of a serving cell and a neighboring cell, the device comprising: a transmit power determining module, configured to determine a transmit power value of the SNPL measurement reference channel;

The device according to claim 15, wherein the transmission power determining module is:

Determining, according to a preset relationship between the measured parameter value range and the reference power value, a reference power value corresponding to the measurement parameter value range to which the measurement parameter value of the cell belongs, and determining, according to the reference power value, the SNPL measurement reference channel corresponding to the cell Transmit power value.

Determining, according to a preset relationship between the measured parameter value range and the reference power value, a reference power value corresponding to the measurement parameter value range to which the measurement parameter value of each carrier belongs in the cell, and determining, according to the reference power value, each cell in the cell The SNPL corresponding to each carrier measures the transmit power value of the reference channel.

The device according to claim 17, wherein the SNPL measurement reference channel corresponding to each carrier in the cell is on one carrier in the cell; or

19. Apparatus according to any of claims 15 to 18, characterized in that

When the reference power value is a reference power value, the transmit power determining module uses the reference power value as the transmit power value;

When the reference power value is a power difference value, the transmit power determining module determines a transmit power value according to the power difference value and a power value of the reference channel.

The device according to claim 15, wherein the sending module sends a reference signal to the user equipment according to the transmit power value of the SNPL measurement reference channel in the intermediate Midamble code portion of the SNPL measurement reference channel.

The device according to claim 15, wherein the sending module sends a reference signal to the user equipment according to a transmit power value of the SNPL measurement reference channel in an intermediate Midamble code part and a data part of the SNPL measurement reference channel. .

The device according to any one of claims 15 to 18, 20, 21, wherein the sending module is further configured to:

The SNPL parameter information of the SNPL measurement reference channel of each cell is transmitted to the user equipment.

A device for determining a path loss SNPL of a serving cell and a neighboring cell, the device comprising: a measuring module, configured to receive a reference signal, receive measurement signals, and receive and receive a reference channel through a SNPL measurement reference channel in each cell that participates in the SNPL calculation Power value

The device according to claim 23, wherein the SNPL determining module determines a path loss value of each cell according to a power value of the reference channel and a measured received power value of each SNPL measurement reference channel, The SNPL is determined based on the determined path loss value of each cell.

The device according to claim 23, wherein the SNPL determining module determines a received power value of the SNPL measurement reference channel in the serving cell and a received power value of the SNPL measurement reference channel in each neighboring cell, according to the determining The received power value determines S PL.

The device according to any one of claims 23 to 25, wherein the measuring module is further configured to: determine, according to the SNPL parameter information, an SNPL measurement reference channel in each cell participating in the SNPL calculation.

27. A system for determining an SNPL, the system comprising:

a network side device, configured to determine a transmit power value of the SNPL measurement reference channel, and send a reference signal by using a SNPL measurement reference channel according to a transmit power value of the SNPL measurement reference channel; The user equipment is configured to receive the reference signal and measure the received power value by using the SNPL measurement reference channel in each cell that participates in the SNPL calculation, and determine the S PL according to the measured received power value.