CN101044694A - Method and system for measuring a rise-over-thermal characteristic in a communication network - Google Patents
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Abstract
A system for measuring a rise-over-thermal (RoT) characteristic in a communication network includes controlling a transmitting station to maintain its transmit power at a substantially constant level for a first time interval, and measuring a first received power level. The transmitting station is then controlled to adjust its transmit power by a selectable amount for a second time interval, and a second received power level is measured. The first and second received power levels are then processed to determine the RoT characteristic.
Description
Cross reference to related applications
This application claims priority to U.S. provisional application No. 60/606,351, filed on day 8, 31, 2004.
Technical Field
The present application relates generally to operation of communication systems, and more particularly to a system, method, and computer-readable medium for measuring rise-over-thermal characteristics in a communication network.
Background
Wireless communication networks are now widely deployed to facilitate wireless communication between mobile station users and other network entities. In one type of network, multiple stations in a particular geographic area may communicate with a hub or base station simultaneously using the same frequency band. This type of network is known as a self-interfering network. A Code Division Multiple Access (CDMA) network is an example of a self-interference network. Thus, the total signal power received by the base station in that frequency band may represent simultaneous transmissions from multiple stations in the area.
It is becoming increasingly important for wireless communication networks to provide both data and voice services. Providing data services results in a significant increase in traffic between a mobile station and its associated base station. In order to optimize network performance, especially in self-interfering networks, the transmission power of the mobile station is carefully controlled. It can be seen that a change in the transmit power of one station can affect the operation of other mobile stations, for example, requiring other mobile stations to change their power as well. In some cases, the network limits may be exceeded if a large number of mobile stations respond to each other by increasing their respective powers, respectively. This may cause the network to become unstable. To avoid this, the network load can be balanced, for example by controlling the transmission power of each mobile station to minimise its impact on other mobile stations and to adapt to the noise power in the network. The noise power is based on environmental factors such as temperature that varies throughout the day. Therefore, any technique that attempts to adjust the network load needs to account for the varying noise power in the network.
One technique for adjusting network load is to measure a network characteristic called rise-over-thermal (RoT). RoT is the reverse link (P)r) To the thermal noise power (N) received at the receiver, i.e. the base station. Adjusting the transmission power of stations to achieve a selected RoT characteristic is one way to balance network load and thereby optimize network performance. However, since the noise power varies throughout the day due to environmental factors, the RoT characteristic of the network also varies. Therefore, to maintain the selected RoT characteristic, it is necessary to measure the noise power in the network throughout the day and adjust the transmit power of each station accordingly. For example, as noise power increases in the network, the RoT characteristic changes to indicate that signal power of one or more stations may need to be adjusted to return to the desired RoT characteristic. Therefore, obtaining accurate noise power measurements and corresponding RoT measurements is important to optimize the network and thereby provide data and voice services in the most efficient manner.
Unfortunately, conventional techniques for measuring RoT characteristics in a communication network have several drawbacks. For example, one technique measures the noise power by: transmissions from all mobile stations communicating with a particular base station are inhibited so that the noise power received by the base station can be measured. However, this technique requires that network service be interrupted because transmissions from those mobile stations have to be suspended. Furthermore, such interruptions may have to be repeated several times per day in order to obtain accurate RoT measurements when the noise power in the network changes. Thus, even if such techniques are utilized in a manner that is not performed very frequently and the duration of the silence interval is limited, there may be no standard provisions in legacy systems to enable the silence period, and modifying existing communication standards to achieve this may not be backward compatible.
Therefore, there is a need for a system for accurately measuring RoT characteristics in a communication network so that network load can be optimized. Unlike conventional techniques, the system should operate to accurately measure RoT characteristics throughout the day as needed without significantly impacting normal network communications while maintaining backward compatibility with existing network standards.
Disclosure of Invention
In one or more embodiments, a rise-over-thermal measurement system, including methods and apparatus, is provided to accurately measure rise-over-thermal characteristics in a communication network. For example, the system is suitable for accurately measuring the RoT characteristics associated with the network reverse link in a CDMA communication network.
In one embodiment, the system operates to maintain and/or adjust the transmit power level of a mobile station during multiple time intervals. The base station measures the received power level during these time intervals. The received power level is then used to calculate the noise power (N) and from this the RoT characteristic of the network can be determined. The power level adjustment is performed at relatively short intervals and does not require the mobile station to suspend transmission. Thus, it does not substantially affect the operation of the mobile station in the network. The system is suitable for multiple RoT measurements throughout the day without significant impact on normal network communications. Thus, the measured RoT characteristics can be used to optimize network load.
In one embodiment, a method for measuring RoT characteristics in a communication network is provided. The method comprises the following steps: one or more transmitting stations are controlled to maintain their transmit power at a substantially constant level for a first time interval, and a first received power level is measured. The method further comprises the following steps: the one or more transmitting stations are controlled to adjust their transmit power by a selectable amount in a second time interval and to measure a second received power level. The method also includes processing the first and second received signal power levels to determine a RoT characteristic.
In another embodiment, an apparatus for measuring RoT characteristics in a communication network is provided. The apparatus includes power control logic operative to output one or more power control commands to control a transmit power level of one or more transmitting stations during first and second time intervals. The apparatus also includes a power detector operative to detect first and second received power levels during the first and second time intervals, respectively. The apparatus also includes processing logic that operates to process the first and second received power levels to determine a RoT characteristic.
In yet another embodiment, an apparatus for measuring RoT values in a communication network is provided. The apparatus comprises: control means for controlling one or more transmitting stations to maintain their transmit power at a substantially constant level for a first time interval; and a measuring device for measuring the first received power level. The apparatus further comprises: control means for controlling said one or more transmitting stations to adjust their transmit power by a selectable amount in a second time interval; and a measuring device for measuring the second received power level. The apparatus additionally includes means for processing the first and second received power levels to determine a RoT characteristic.
In yet another embodiment, a computer-readable medium comprising instructions, which when executed by a processor, operate to measure RoT characteristics in a communication network is provided. The computer-readable medium includes instructions for: control instructions for controlling one or more transmitting stations to control their transmit power to be substantially at a constant level for a first time interval; and measuring instructions for measuring the first received power level. The computer readable medium further comprises: control instructions for controlling the one or more transmitting stations to adjust their transmit power by a selectable amount in a second time interval; and measuring instructions for measuring the second received power level. The computer-readable medium also includes processing instructions for processing the first and second received power levels to determine a RoT characteristic.
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The foregoing aspects and the attendant advantages of the embodiments described herein will become more readily appreciated by reference to the following detailed description when taken in conjunction with the accompanying drawings wherein:
fig. 1 shows a communication network including one embodiment of a RoT measurement system;
fig. 2 shows a diagram of one RoT measurement logic embodiment; and
fig. 3 shows one embodiment of a method for measuring RoT in a communication network.
Detailed Description
The following detailed description describes one or more embodiments of a rise-over-thermal measurement system for use in a communication network. For example, the system is adapted to measure the RoT characteristic of a reverse link in a self-interfering network, the reverse link being shared by a plurality of stations for transmitting information to a central station, base station or hub.
Fig. 1 shows a communication network 100 that includes an embodiment of a RoT measurement system. The network 100 includes a base station 102, the base station 102 communicating with mobile stations (104, 106, 108) in a nearby geographic area. For the sake of convenience of this description, only 3 mobile stations are shown; however, the system is suitable for use with virtually any number of mobile stations.
The base station 102 includes RoT logic 128. The RoT logic 128 operates to perform RoT measurements for the reverse link. In one embodiment, the RoT logic 128 includes logic that issues power control commands to control mobile station transmit power. Power control commands are transmitted to each station over control channels 122, 124 and 126, respectively, and operate to cause the mobile station to increase or decrease its transmit power.
In general, the base station 102 implements a power control loop that operates to control the power at which the mobile station transmits on the reverse link. In one or more embodiments, the RoT logic 128 operates to briefly overwrite certain power control commands that are typically generated to control the transmit power of the mobile station to a desired level, thereby allowing the RoT characteristic of the reverse link to be measured. However, the measurement time is relatively short and the mobile station is still operating to transmit information to the base station 102. Therefore, the RoT measurement system can be used throughout the day to measure the RoT characteristics of the reverse link without significantly affecting the operation of the network.
During operation of the RoT measurement system, the RoT logic 128 operates to perform one or more of the following functions to measure the RoT characteristics of the reverse link.
1. Power control commands are issued to cause the mobile stations to maintain their respective transmit power levels at a constant level for a first selected time interval.
2. A first power value of the reverse link is measured.
3. Power control commands are issued to cause the mobile stations to increase or decrease their respective transmit power levels by a known amount.
4. A power control command is issued to cause the mobile station to maintain its new power level for a second selected time interval.
5. A second power value of the reverse link is measured.
6. The first and second power values are processed to determine a noise power level.
7. The RoT characteristic of the reverse link is calculated using the determined noise power level.
Embodiments of the above-described system operate to determine the RoT and associated noise power of the network without requiring any mobile stations to cease transmission. Therefore, the system can measure the RoT characteristics of the network all day when the noise power changes. Once the RoT characteristic is determined, the base station may issue additional power control commands to adjust the transmit power of one or more stations to maintain the desired RoT characteristic.
Figure 2 shows a diagram of one embodiment of rise-over-thermal measurement logic 200. For example, the logic 200 is suitable for use as the RoT logic 128 shown in fig. 1. The RoT logic 200 includes processing logic 202, power control logic 204, and a reverse link power detector 206, all connected to an internal data bus 208.
The reverse link power detector 206 comprises a processor, CPU, gate array, logic, discrete circuitry, software, and/or any combination of hardware and software. The detector 206 operates to detect a received power level of a signal received over a reverse link of a communication network, such as the network 100. Accordingly, detector 206 includes logic for detecting the received power level of signals received over reverse link 216. The detector 206 uses any suitable power detection technique and/or logic to detect or measure the received signal power received over the reverse link 216.
The power control logic 204 comprises a processor, CPU, gate array, logic, discrete circuitry, software, and/or any combination of hardware and software. Control logic 204 operates to generate power control commands that are transmitted over control channel 214 to control the transmit power of one or more mobile stations. For example, the control channel 214 may be the control channels 122, 124 shown in fig. 1, with the control channels 122, 124 operating to control the transmit power of the respective stations 104, 106, and 108, respectively. During normal operation of the network, a power control loop is implemented to control the transmit power of each station. In one or more embodiments, the RoT measurement system operates to briefly overwrite certain power control commands so that RoT characteristics can be measured. However, because the stations are still able to transmit signals and the power control loop commands are only overwritten for a short period of time, normal operation of the mobile station is still generally unaffected.
In one embodiment, the power control commands include a power up command and a power down command. The power increase command causes the selected mobile station to increase its transmit power by a selectable amount, or "step size". The power reduction command causes the selected mobile station to reduce its transmit power by a selectable amount, or step size. In one embodiment, the selectable amount (step size) is equal to 1 decibel (dB). However, any suitable step size may be used.
In another embodiment, the power control commands include any suitable type of command that can be used to control the power of one or more mobile stations. In addition, any type of transport channel or technique may be used to provide power control commands for the mobile station. For example, the commands may be stored in a computer program executed by the mobile station.
The processing logic 202 comprises a processor, CPU, gate array, logic, discrete circuitry, software, and/or any combination of hardware and software. In one embodiment, the processing logic 202 operates to control the operation of the power control logic 204 and the reverse link power detector 206 to measure the RoT characteristic of the reverse link 212. For example, the processing logic 202 controls the power control logic 204 to transmit selected power control commands to one or more mobile stations in the network. The processing logic 202 then controls the reverse link power detector 206 to detect the power of the signals received over the reverse link 212.
The processing logic 202 also includes timing logic (not shown) that operates to measure one or more time intervals in which power detection is performed on the reverse link 212. For example, the timing logic operates to time the first and second time intervals shown with reference to FIG. 1.
In operation of one embodiment, power control logic 204 outputs power control commands to each mobile station to maintain its transmit power constant for a first time interval. For example, power control logic 204 outputs alternating power up and power down commands. The detector 206 then detects a first power level (P) of the reverse link 2121). Power control logic 204 then outputs power control commands to cause the mobile stations to increase or decrease their respective transmit powers by a known amount and then to hold the new levels constant for a second time interval. The detector 206 then detects a second power level (P) of the reverse link 2122). Upon detection of these two power levels (P)1And P2) The processing logic 202 operates to determine the noise power (N) associated with the network given the existing environmental factors. The processing logic 202 then uses the determined noise power (N) to calculate the RoT characteristic of the reverse link 212.
In one embodiment, the processing logic 202 operates to determine the RoT characteristic of the reverse link 212 by analyzing the following two linear equations to determine the noise power (N).
P1＝N+S
P2＝N+(α*S)
Wherein P is1Is the total received power, P, in the first time interval2Is the total received power in the second time interval, N is the noise component of the received power, S is the total received signal power, and α is the adjustment factor for the signal power. It should be noted that the values of N and S will be substantially the same during these two time intervals, since these two time intervals are close together and thus the environmental factors associated with the network will not change significantly. It should also be noted that measurements made during these two time intervals may include during each intervalAverage of multiple measurements made. The adjustment coefficient a indicates how much the transmission power of the respective station has increased or decreased during the second time interval. For example, the transmit power of each station may be increased by 2-3 dB. In each measurement, the length of the first measurement interval may be 10ms, and the length of the second measurement interval may be 10 ms. For example, the adjustment coefficient α may be set to 3 dB. To further improve reliability, multiple measurements may be performed. It is recommended that the final result be obtained after averaging 10 measurements. Each successive measurement should be separated by at least 2 seconds to ensure that the quality of the reverse link is not significantly affected by the measurement.
Once the processing logic 202 determines the noise power (N) according to the above equation, the power control loop for controlling the transmit power of each station returns to its normal state. The RoT characteristic of the network is determined according to the following equation:
RoT＝Pr/N
wherein P isrIs the total power received at the base station on the reverse link and N is the noise power determined according to the above equation. The entire process and/or equation may be repeated one or more times to arrive at an average RoT result. Thus, the system operates to determine the RoT characteristic of the reverse link without knowing how many stations in the network are transmitting efficiently. In one or more embodiments, the system operates to calculate an accurate estimate of noise power. Once the noise power is known, the RoT characteristic can be calculated at the desired frequency, e.g., once every 5ms or 10 ms. Furthermore, the noise power may be recalculated throughout the day as environmental conditions change.
In one embodiment, the RoT measurement system includes program instructions stored on a computer-readable medium that, when executed by the rise-over-thermal measurement logic 200, provide the functionality described herein. For example, the instructions may be loaded into the processing logic 202 from a computer-readable medium, such as a floppy disk, CDROM, memory card, flash memory device, RAM, ROM, or any other type of memory device or computer-readable medium that interfaces with the processing logic 202. In another embodiment, the instructions may be downloaded into the processing logic 202 from a network resource. The instructions, when executed by the processing logic 202, provide one or more embodiments of the RoT measurement system described herein.
It should be appreciated that the elements of the rise-over-thermal measurement logic 200 shown in FIG. 2 represent only one embodiment, and that the implementation of the measurement logic 200 may be implemented in one of any number of ways, using more or fewer functional elements. For example, some or all of the functional elements shown may be implemented in hardware or a computer program executed by one or more processors.
Fig. 3 shows one embodiment of a method 300 for determining RoT characteristics of a communication channel in a wireless data network. The method 300 is suitable for use by one or more embodiments of the RoT measurement logic 200 shown in fig. 2.
At block 302, network communications are established with several mobile stations, wherein the mobile stations communicate over a reverse link. For example, the network may be a CDMA network in which one or more mobile stations communicate with a base station over a reverse link.
At block 304, the transmit power of the mobile station is maintained at a fixed level for a first selectable time interval. For example, in one embodiment, the processing logic 202 operates to control the power control logic 204 to output alternating power up and power down commands to the mobile station over the control channel 210. The alternating power control commands have the effect of maintaining the transmit power of the mobile station at a fixed level for a first time interval.
At block 306, the received power on the reverse link is measured. For example, the processing logic 202 controls the reverse link power detector 206 to measure the received power (P) on the reverse link 2121). Storing the detected level (P)1) For subsequent processing.
At block 308, the transmit power of the mobile station is adjusted and maintained at the new transmit power level during the second selectable time interval. For example, in one embodiment, the processing logic 202 operates to control the power control logic 204 to output a selectable number of power up or power down commands to the mobile station over the control channel 210. A selectable number of power up or power down commands cause the mobile station to adjust its transmit power by a known amount. For example, if the step size of each power control command is 1 decibel (dB), then 4 increase power commands would cause the mobile station to increase its transmit power by 4 dB. Power control logic 204 then outputs power control commands to cause the mobile station to maintain its new power level for a second selectable time interval. For example, alternating power up and power down commands are transmitted.
At block 310, the received power on the reverse link is measured. For example, the processing logic 202 controls the reverse link power detector 206 to measure the received power (P) on the reverse link 2122). Storing the detected level (P)2) For subsequent processing. The processing logic 202 then operates to return the power control loop operating at the base station to normal operation.
At block 312, a power value (P) is measured based on the measured power value1And P2) A noise power value is calculated. For example, in one embodiment, processing logic 202 operates to calculate the noise power value by solving (N) in the two linear equations described above.
At block 314, a noise power value (N) and a total received power value (P) are measuredr) To calculate the RoT characteristic. For example, in one embodiment, the processing logic 202 operates to measure the total received power (P) received at the base station by controlling the reverse link power detector 206r). Once the received power (P) is measuredr) The RoT characteristic of the reverse link may be calculated as described above. The processing logic 202 may then control the power control logic 204 to transmit power control commands to one or more mobile stations to set the load of the network to a desired level. The method then ends at block 316.
It should be noted that the method 300 is just one embodiment, and that modifications, additions, deletions, or rearrangements of the method 300 are within the scope of the described embodiments.
A rise-over-thermal measurement system for measuring rise-over-thermal characteristics in a communication network has been described. Accordingly, while one or more embodiments of the rise-over-thermal measurement system have been illustrated and described herein, it will be appreciated that various modifications can be made to the embodiments without departing from their spirit or essential characteristics. Accordingly, the disclosure and description herein are intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.
Claims (32)
1. A method for measuring rise-over-thermal characteristics in a communication network, comprising:
controlling at least one transmitting station to maintain its transmit power at a substantially constant level during a first time interval;
measuring a first received power level;
controlling the at least one transmitting station to adjust its transmit power by a selectable amount in a second time interval;
measuring a second received power level; and
processing the first and second received power levels to determine the rise-over-thermal characteristic.
2. The method of claim 1, wherein the controlling further comprises transmitting alternating power up and power down commands.
3. The method of claim 2, wherein the controlling further comprises transmitting at least one power adjustment command.
4. The method of claim 3, wherein said transmitting at least one power adjustment command comprises transmitting a selected number of said power increase commands.
5. The method of claim 3, wherein said transmitting at least one power adjustment command comprises transmitting a selected number of said power reduction commands.
6. The method of claim 1, wherein the processing comprises solving two linear equations to determine the noise power (N).
7. The method of claim 6, wherein the two linear equations are:
P1n + S; and
P2＝N+(α*S)，
wherein,
P1is the first received power level;
P2is the second received power level;
s is the total received signal power; and
α is the selectable power adjustment amount.
8. The method of claim 7, wherein the processing step comprises determining the rise-over-thermal (RoT) characteristic according to
RoT＝Pr/N
Wherein:
Pris the total received power on the reverse link.
9. An apparatus for measuring rise-over-thermal (RoT) characteristics in a communication network, comprising:
power control logic for outputting one or more power control commands to control a transmit power level of at least one transmitting station during first and second time intervals;
a power detector for detecting first and second received power levels during the first and second time intervals, respectively; and
processing logic for processing the first and second receive power levels to determine the RoT characteristic.
10. The apparatus of claim 9, wherein the power control logic further comprises holding logic for holding a transmit power of the at least one station during the first time interval by transmitting alternating power up and power down commands.
11. The apparatus of claim 10, wherein the power control logic further comprises control logic to control the at least one transmitting station to adjust its transmit power by transmitting at least one power adjustment command.
12. The apparatus of claim 11, wherein at least one power adjustment command comprises a selected number of the power increase commands.
13. The apparatus of claim 11, wherein at least one power adjustment command comprises a selected number of the power reduction commands.
14. The apparatus of claim 10, wherein said processing logic comprises solving logic for solving two linear equations to determine the noise power (N).
15. The apparatus of claim 14, wherein the solution logic comprises logic to determine the noise power (N) according to two linear equations:
P1n + S; and
P2＝N+(α*S)，
wherein,
P1is the first received power level;
P2is the second received power level;
s is the total received signal power; and
α is the selectable power adjustment amount.
16. The apparatus of claim 15, wherein the processing logic further comprises logic to determine the RoT characteristic according to
RoT＝Pr/N
Wherein:
Pris the total received power on the reverse link.
17. An apparatus for measuring rise-over-thermal (RoT) values in a communication network, comprising:
control means for controlling at least one transmitting station to maintain its transmit power at a substantially constant level during a first time interval;
measuring means for measuring a first received power level;
control means for controlling said at least one transmitting station to adjust its transmit power by a selectable amount in a second time interval;
measuring means for measuring a second received power level; and
means for processing the first and second received power levels to determine the RoT characteristic.
18. The apparatus of claim 17, wherein the means for controlling the at least one transmitting station comprises means for transmitting alternating power up and power down commands.
19. The apparatus of claim 18, wherein the means for controlling the at least one transmitting station comprises means for transmitting at least one power adjustment command.
20. The apparatus of claim 19, wherein the means for transmitting the at least one power adjustment command comprises means for transmitting a selected number of the power increase commands.
21. The apparatus of claim 19, wherein the means for transmitting the at least one power adjustment command comprises means for transmitting a selected number of the power reduction commands.
22. Apparatus according to claim 17, wherein said processing means comprises solving means for solving two linear equations to determine the noise power (N).
23. The apparatus of claim 22, wherein the solving means comprises means for determining the noise power according to two linear equations:
P1n + S; and
P2＝N+(α*S)
wherein,
P1is the first received power level;
P2is the second received power level;
s is the total received signal power; and
α is the selectable power adjustment amount.
24. The apparatus of claim 23, wherein the processing means further comprises means for determining the RoT characteristic according to
RoT＝Pr/N
Wherein:
Pris the total received power on the reverse link.
25. A computer-readable medium comprising instructions, which when executed by a processor, operate to measure rise-over-thermal (RoT) characteristics in a communication network, the computer-readable medium comprising:
control instructions for controlling at least one transmitting station to maintain its transmit power at a substantially constant level for a first time interval;
measuring instructions for measuring a first received power level;
control instructions for controlling the at least one transmitting station to adjust its transmit power by a selectable amount in a second time interval;
measuring instructions for measuring a second received power level; and
processing instructions for processing the first and second receive power levels to determine the RoT characteristic.
26. The computer-readable medium of claim 25, wherein the instructions for controlling the at least one transmitting station comprise instructions for transmitting alternating power increase and power decrease commands.
27. The computer-readable medium of claim 26, wherein the instructions for controlling the at least one transmitting station comprise instructions for transmitting at least one power adjustment command.
28. The computer-readable medium of claim 27, wherein the instructions for transmitting the at least one power adjustment command comprise instructions for transmitting a selected number of the power increase commands.
29. The computer-readable medium of claim 27, wherein the instructions for transmitting the at least one power adjustment command comprise instructions for transmitting a selected number of the power reduction commands.
30. The computer-readable medium of claim 26, wherein the processing instructions include instructions for solving two linear equations to determine a noise power (N).
31. The computer-readable medium of claim 30, wherein the instructions for solving comprise instructions for determining the noise power (N) according to two linear equations:
P1n + S; and
P2＝N+(α*S)
P1n + S; and
P2＝N+(α*S)
wherein,
P1is the first received power level;
P2is the second received power level;
s is the total received signal power; and
α is the selectable power adjustment amount.
32. The computer-readable medium of claim 31, wherein the processing instructions further comprise instructions for determining the RoT characteristic according to
RoT＝Pr/N
Wherein:
Pris the total received power on the reverse link.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60635104P | 2004-08-31 | 2004-08-31 | |
| US60/606,351 | 2004-08-31 | ||
| US11/179,279 | 2005-07-12 |
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| Publication Number | Publication Date |
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| CN101044694A true CN101044694A (en) | 2007-09-26 |
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| CNA2005800357836A Pending CN101044694A (en) | 2004-08-31 | 2005-08-31 | Method and system for measuring a rise-over-thermal characteristic in a communication network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103250366A (en) * | 2010-09-29 | 2013-08-14 | 高通股份有限公司 | Method and apparatus for adjusting rise-over-thermal threshold |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103250366A (en) * | 2010-09-29 | 2013-08-14 | 高通股份有限公司 | Method and apparatus for adjusting rise-over-thermal threshold |
| CN103250366B (en) * | 2010-09-29 | 2016-08-10 | 高通股份有限公司 | For the method and apparatus adjusting hot noise increase threshold |
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