Method and apparatus for testing a wireless link using configurable channels and rates
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04J-001/16
H04J-001/00
H04J-003/24
출원번호
US-0392130
(2003-03-18)
발명자
/ 주소
Mir,Idreas A.
Gibson,R. Nicholson
출원인 / 주소
Qualcomm Incorporated
인용정보
피인용 횟수 :
22인용 특허 :
2
초록▼
Techniques to test a wireless communication link using configurable channels and rates. A W-Markov test service may be invoked to test and/or verify the performance of the downlink and/or uplink using at least one transport channel for each link. Each transport channel may be individually configured
Techniques to test a wireless communication link using configurable channels and rates. A W-Markov test service may be invoked to test and/or verify the performance of the downlink and/or uplink using at least one transport channel for each link. Each transport channel may be individually configured. The W-Markov test service supports generation of test data based on a defined data sequence or a pseudo-random number generator. The testing may be performed based on a particular deterministic or pseudo-random activity model. For voice call testing, a first-order Markov model may be used to model voice activity and to select the rate to use for each transmission time interval (TTI). For Adaptive Multi-Rate (AMR), testing may be performed based on configurable AMR rates and silence descriptor (SID) types. The test data generation processes are synchronized between the transmitter and receiver. Bit, frame, and/or block error rates and other statistics may be collected.
대표청구항▼
The invention claimed is: 1. A method of testing a communication link in a wireless communication system, comprising: determining a current state of a Markov chain for a current transmission time interval (TTI), wherein the Markov chain models voice frames generated by an Adaptive Multi-Rate (AMR)
The invention claimed is: 1. A method of testing a communication link in a wireless communication system, comprising: determining a current state of a Markov chain for a current transmission time interval (TTI), wherein the Markov chain models voice frames generated by an Adaptive Multi-Rate (AMR) speech encoder; generating a data block of test data for the current TTI if the current state indicates that test data is to be transmitted; wherein the data block includes bits for a plurality of AMR classes; partitioning the data block into a plurality of frames for the plurality of AMR classes, and wherein each of the plurality of frames is transmitted on a respective transport channel; and processing the data block for transmission on at least one transport channel configured for the communication link. 2. The method of claim 1, further comprising: determining a rate for the current TTI based on the current state, wherein the rate is either full rate or null rate, and wherein the data block is generated if the rate is full rate and not generated if the rate is null rate. 3. The method of claim 1, further comprising: configuring the at least one transport channel during test setup. 4. The method of claim 1, further comprising: selecting a transport format for each of the at least one transport channel, and wherein the processing for each of the at least one transport channel is determined by the transport format selected for the transport channel. 5. The method of claim 2, wherein a silence descriptor (SID) frame is transmitted for the null rate for each null rate interval of a predetermined duration. 6. The method of claim 5, further comprising: selecting one SID type from among a plurality of SID types, and wherein the SID frame is of the selected SID type. 7. The method of claim 1, wherein a plurality of AMR modes are tested, and wherein each of the plurality of AMR modes is associated with a respective data rate. 8. The method of claim 7, further comprising: selecting one AMR mode from among the plurality of AMR modes for the current TTI, wherein the data block has a size that is determined by the data rate associated with the selected AMR mode. 9. The method of claim 1, wherein the test data for the data block is a defined data pattern or pseudo-random data from a pseudo-random number generator. 10. The method of claim 1, further comprising: selecting one TTI value from among a plurality of TTI values, wherein each of the plurality of TTI values is for a different time duration, and wherein the current TTI is of the selected TTI value. 11. The method of claim 1, wherein the communication link is either a downlink or an uplink. 12. The method of claim 1, further comprising: selecting one Markov model from among a plurality of Markov models, and wherein the Markov chain is for the selected Markov model. 13. The method of claim 1, wherein the Markov chain comprises 16 states. 14. The method of claim 13, further comprising: determining transitions among the 16 states based on transition probabilities that model voice activity. 15. The method of claim 1, wherein the Markov chain comprises two states. 16. The method of claim 15, wherein the two states of the Markov chain include an ON state and an OFF state, wherein the data block is generated if the current state of the Markov chain is the ON state and not generated if the current state is the OFF state. 17. The method of claim 16, further comprising: obtaining a pseudo-random number from a pseudo-random number generator; transitioning from the ON state to the OFF state based on the pseudo-random number and a first threshold value; and transitioning from the OFF state to the ON state based on the pseudo-random number and a second threshold value. 18. The method of claim 17, further comprising: configuring the first and second threshold values during test setup. 19. The method of claim 16, further comprising: determining transitions between the ON state and the OFF state based on transition probabilities that model voice activity. 20. The method of claim 16, wherein test data transmission occurs on the at least one transport channel for an ON duration followed by no test data transmission for an OFF duration. 21. The method of claim 20, further comprising: configuring the ON and OFF durations during test setup. 22. The method of claim 1, wherein downlink and uplink are concurrently tested based on a first set of at least one transport channel configured for the downlink and a second set of at least one transport channel configured for the uplink. 23. The method of claim 22, wherein rates for the downlink and uplink are configurable independently. 24. The method of claim 1, wherein the wireless communication system is a CDMA system.
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이 특허에 인용된 특허 (2)
Tiedemann ; Jr. Edward G. ; Jou Yu-Cheun ; Weaver ; Jr. Lindsay A. ; Bayley Gwain, Method and apparatus for testing a digital communication channel.
Cheon, Kyung Yul; Hwang, You Sun; Jung, Kwang Ryul; Park, Ae Soon, Method of transmitting small amount of uplink data and method of receiving small amount of uplink data.
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