(19) United States US 20060105797A (12) Patent Appication Pubication (10) Pub. N0.: US 2006/0105797 A1 Marsan et a. (43) Pub. Date: (54) METHOD AND APPARATUS FOR (52) US. C...... 455/522 ADJUSTING A MOBILE COMMUNICATION DEVICE S TRANSMISSION POWER (75) Inventors: Mark J. Marsan, Emhurst, IL (US); (57) ABSTRACT David A. Hensey, Wheaton, IL (U S) Correspondence Address_ A bandwidth monitor (14) monitors ('21) the bandwidth of a MOTOROLA INC ' tran'smisson channe for a given W1reess c'ommumcato'n 1303 EAST AiJGONQUIN ROAD device (10), and a signa quaty factor 'momtor (15) mom IL01 BRD tors (22) a 'signa duaty factor reatmg to the W1reess SCH AUMBURG IL 60196 commun1cat1on devce s transm1ss1on. In response to the monitored factors, a transmission power setting unit (13) for (73) - _ the Wireess communication device transceiver (12) typi Assgnee' Motoroa Inc cay adjusts (32) the transmission power for the Wireess (21) App_ No; 10/986,613 communication device (10) to maintain an essentiay con stant transmission power per unit bandwidth and to maintain (22) Fied; N0 12, 2004 an essentiay constant signa strength as measured at the base station (11). Optionay, the transmission power is not Pubication Cassi?cation increased if the signa quaity factor exceeds a predeter mined eve or if the transmission power may?uctuate (51) Int. C. above the maximum transmission power for the Wireess H04B 7/00 (2006.01) communication device (10). I0 11 ' F "p _ [- _ 1 r _ I _ _ 1 '{ WIRELESS COMMUNICATION ' DEVICE TRANSCEIVER BANDWIDTH MONITOR 14 TRANSMISSION POWER SETTING UNIT ' PEAK T0 AVERAGE I 17TRANSMISSION POWERI \I MONITOR J MAXIMUM TRANSMISSION POWER MONITOR WIRELESS COMMUNICATION DEVICE SIGNAL QUALITY FACTOR MONITOR 15
' Patent Appication Pubication Sheet 1 0f 2 US 2006/0105797 A1 I _ [10 '{ WIRELESS COMMUNICATION ~ DEVICE TRANSCEIVER 1i TRANSMISSION POWER, SETTING UNIT I :-. _ I BANDWIDTH MONITOR IRAx?uATFR/TNsTA?sIoRI' L mm MONITOR JI} 14/ r v _. 16] I PEAK TO AVERAGE ' 17TRANSMISSION POWERI I \L MONITOR j "1H WIRELESS COMMUNICATION DEVICE SIGNAL QUALITY FACTOR MONITOR I 15/ 1 1 FIG. 1 MONITOR THE BANDWIDTH /22 MONITOR A SIGNAL QUALITY FACTOR ADJUST THE TRANSMISSION POWER FOR THE WIRELESS COMMUNICATION DEVICE r25 FIG- 2 r21 [MONITOR THE BANDWIDTH L r22 IMONITOR A SIGNAL QUALITY FACTOR L /30 IMONITOR THE MAXIMUM TRANSMISSION POWER L L r31 [MONITOR PEAK TO AVERAGE TRANSMISSION POWER ADJUST THE TRANSMISSION POWER FOR THE WIRELESS COMMUNICATION DEVICE FIG. 3 r52
Patent Appication Pubication Sheet 2 0f 2 US 2006/0105797 A1 40 I MONITOR THE BANDWIDTH /41 [MONITOR A SIGNAL QUALITY FACTOR - MONITOR THE MAXIMUM TRANSMISSION POWER,45 MONITOR THE PEAK To AVERAGE TRANSMISSION POWER [44 N0 DETERMINE WHETHER THE SIGNAL QUALITY YES mm mm A PREDETERMINED LEVEL S /46 DETERMINE WHETHER THE DANDwIDTH 47 EXCEEDS A PREDETERMINED LEVEL ADJUST THE TRANSMISSION POHER AS NEEDED I /48 DO NOT INcRESASE THE TRANSMISSION POHER YES /45 ETERMINE WHETHER AN INOREASE I 49 THE TRANSMISSION POWER WILL EXCEED Do NOT MUSE N0 AN AMOuNT DETERMINED BY THE MAxIMuM YES THE TRANSMISSION TRANSMISSION POWER AND THE POWER 50 PEAK TO AVERAGE TRANSMISSION INcREASE THE POWER TRANSMISSION POWER FIG. 4
METHOD AND APPARATUS FOR ADJUSTING A MOBILE COMMUNICATION DEVICE S TRANSMISSION POWER TECHNICAL FIELD [0001] This invention reates generay to Wireess com munication systems and more particuary to systems Wherein a given Wireess communication device empoys a variabe bandwidth transmission capabiity. BACKGROUND [0002] Wireess communication systems of various kinds are known in the art. Many such systems typicay incude Wireess communication devices With a variabe transmis sion power capabiity. Some Wireess communication sys tems known in the art incude Wireess communication devices With variabe transmission bandwidth capabiities. [0003] Wireess communication devices With variabe transmission bandwidth capabiities typicay increase the bandwidth of the device When it is necessary to send or receive arge amounts of data or other information. Doing so decreases the transmission time for sending or receiving the data. Transmission at a arger bandwidth but at the same transmission power, however, reduces the effective power of the transmission across the bandwidth. In other Words, a Wireess communication device Wi typicay transmit at a given power regardess of the bandwidth of the transmis sion. If the Wireess communication device transmits at a arge bandwidth, there is ess power avaiabe to transmit each unit of bandwidth than if transmitting at a smaer bandwidth. This drop in transmission power per unit of bandwidth thereby potentiay harms the received signa strength and signa quaity. [0004] Aso, in certain systems With variabe bandwidth transmission capabiities, the actua transmission power?uctuates above and beow an average transmission power during norma use because of the moduation of the trans mission. An exampe of such a technoogy is the so-caed Wideband iden (WiDEN) technoogy Where the trans mission power?uctuates When communicating at certain bandwidths. Such voatiity in the transmission power cre ates probems When increasing a Wireess communication device s transmission power because the voatiity may push the transmission power beyond the maximum transmission power capabiities for a given Wireess communication device. BRIEF DESCRIPTION OF THE DRAWINGS [0005] The above needs are at east partiay met through provision of the method and apparatus for adjusting a mobie communication device s transmission power described in the foowing detaied description, particuary When studied in conjunction With the drawings, Wherein: [0006] FIG. 1 comprises a bock diagram as con?gured in accordance With various embodiments of the invention; [0007] FIG. 2 comprises a How diagram as con?gured in accordance With various embodiments of the invention; [0008] FIG. 3 comprises a How diagram as con?gured in accordance With various embodiments of the invention; and [0009] FIG. 4 comprises a How diagram as con?gured in accordance With various embodiments of the invention. [0010] Skied artisans Wi appreciate that eements in the?gures are iustrated for simpicity and carity and have not necessariy been drawn to scae. For exampe, the dimen sions and/or reative positioning of some of the eements in the?gures may be exaggerated reative to other eements to hep to improve understanding of various embodiments of the present invention. Aso, common but We-understood eements that are usefu or necessary in a commerciay feasibe embodiment are often not depicted in order to faciitate a ess obstructed view of these various embodi ments of the present invention. It Wi aso be understood that the terms and expressions used herein have the ordinary meaning as is accorded to such terms and expressions With respect to their corresponding respective areas of inquiry and study except Where speci?c meanings have otherwise been set forth herein. DETAILED DESCRIPTION [0011] Generay speaking, pursuant to these various embodiments, the bandwidth of a transmission channe for a Wireess communication device is monitored. Additionay, a signa quaity factor measuring the signa quaity between the Wireess communication device and a base station is monitored. Then, the transmission power for the Wireess communication device is adjusted as a function, at east in part, of the bandwidth and signa quaity factor. [0012] So con?gured, the transmission power for a Wire ess communication device can be increased When transmit ting at a higher bandwidth resuting in a consistent signa quaity regardess of the transmission bandwidth. Aso, the transmission power can be maintained When the signa quaity indicates that no bene?t Wi be gained by increasing the transmission power, thereby conserving battery ife When a Wireess communication device is used near a base station. The resut is a dynamicay controed transmission power such that the signa received at the base station is essentiay constant thereby imiting interference With other Wireess communication devices. [0013] Referring now to the drawings and in particuar to FIG. 1, a Wireess communication device 10 is in commu nication With a base station 11. The Wireess communication device 10 is capabe of transmitting information at a pu raity of bandwidths to the base station 11. The Wireess communication device 10 incudes a Wireess communica tion device transceiver 12 that is responsive to transmission power setting unit 13. As known in the art, the transmission power setting unit 13 aternativey may be integra With the Wireess communication device transceiver 12. The trans mission power setting unit 13 contros the transmission power of the transceiver. Thus, through the transmission power setting unit 13, the Wireess communication device transceiver 12 is responsive to the Wireess communication device transmission channe bandwidth monitor 14. The bandwidth monitor 14, as known in the art, resides Within the Wireess communication device 10 and detects the band Width at Which the Wireess communication device 10 trans mits. [0014] The base station 11 incudes a Wireess communi cation device signa quaity factor monitor 15. The signa quaity factor monitor 15, as known in the art, monitors the
signa quaity of the signas received by the base station 11 from the Wireess communication device 10. The base station 11 then sends back to the Wireess communication device 10 the signa quaity factor as determined by the signa quaity factor monitor 15. The Wireess communica tion device transceiver 12, through the transmission power setting unit 13, is responsive to the signa quaity factor received from the base station 11 and the Wireess commu nication device signa quaity factor monitor 15. Aterna tivey, the signa quaity factor monitor 15 can be ocated Within the Wireess communication device 10 Where it detects the signa quaity of transmissions received from the base station 11 to determine the a signa quaity factor. [0015] The Wireess communication device 10 aterna tivey incudes a maximum transmission power monitor 16 and a peak to average transmission power monitor 17. The maximum transmission power monitor 16, as known in the art, detects the maximum transmission power for the Wire ess communication device 10. Simiary, the peak to aver age transmission power monitor 17 measures a factor cor responding to the difference between the peak transmission power?uctuation from the average transmission power and the average transmission power for the Wireess communi cation device 10. Such a device is known in the art. Aternativey, a singe monitor may monitor both the maxi mum transmission power and the peak to average transmis sion power. In yet another embodiment, the maximum transmission power is determined prior to use and stored permanenty Within the Wireess communication device 10. The maximum transmission power monitor 16 is hereby de?ned to incude this stored setting in such embodiments Where the maximum transmission power monitor 16 does not activey monitor the maximum transmission power. The Wireess communication device transceiver 12, through the transmission power setting unit 13, is responsive to the maximum transmission power monitor 16 and the peak to average transmission power monitor 17. [0016] A method of operation for adjusting the transmis sion power in accordance With the various embodiments of the invention Wi now be further described With reference to FIG. 2. The bandwidth monitor 14 monitors 21 the band Width of a transmission channe through Which the Wireess communication device 10 is transmitting. Further, the signa quaity factor monitor 15 monitors 22 a signa quaity factor. Then, the transmission power setting unit 13 adjusts 23 the transmission power for the Wireess communication device as a function, at east in part, of the bandwidth and the signa quaity factor. One shoud note that the monitoring steps of FIG. 2 can be performed in any order or at the same time. [0017] One skied in the art Wi recognize that various embodiments can be appied to Wireess communication devices using any number of transmission technoogies. For exampe, the Wireess communication device may be trans mitting over a data transmission channe. Aternativey, the Wireess communication device 10 may utiize the variabe bandwidth technoogy known as WiDEN technoogy. As known in the art, WiDEN technoogy aows for a Wireess communication device to transmit at any one of up to four bandwidths: 25 khz, 50 khz, 75 khz, and 100 khz. Thus, the bandwidth monitor, When used in an embodiment uti izing WiDEN technoogy, Wi detect a transmission chan ne bandwidth of one of 25 khz, 50 khz, 75 khz, or 100 khz. [0018] Simiary, one skied in the art Wi recognize that the signa quaity factor monitor 15 may monitor one or more of severa possibe measures of signa quaity. For exampe, the signa quaity factor monitor 15 may monitor 22 such known measures as a power contro constant, a magnitude of signa, a ratio of desired signa to undesired signa, a bit error rate, and the ike. Each such factor is a measure of the signa quaity, and any of the factors aone or in combination can be incorporated into a signa quaity factor measured by the signa quaity factor monitor 15. [0019] In a preferred embodiment, the transmission power for a Wireess communication device 10 Wi typicay be increased in response to a monitored 21 increase in band Width. The increase in transmission power offsets the oss in power per unit bandwidth experienced When a Wireess communication device 10 transmits at higher bandwidths. Preferaby, the Wireess communication device transceiver 12 via the transmission power setting unit 13 adjusts the transmission power in response to the monitors 14 and 15 such that the strength of signa of the transmission from the Wireess communication device 10 as measured at the base station 11 is essentiay constant per unit bandwidth over a substantia range of distance between the Wireess commu nication device 10 and the base station 11. To do so, the transceiver accounts for changes in signa strength due to bandwidth changes and changes in the signa quaity factor. [0020] For exampe, if a given Wireess communication device 10 transmits at 10 mw at a 25 khz bandwidth, the transmission power per unit bandwidth is 10 mw per 25 khz or 0.4 mw/khz. If the Wireess communication device then transmits at a 50 khz bandwidth, the transmission power per unit bandwidth Wi be 10 mw per 50 khz or ony 0.2 mw/khz if the transmission power is not adjusted. To maintain the transmission power per unit bandwidth and thereby the signa quaity, the transmission power is adjusted to 20 mw in the situation Where the bandwidth is increased to 50 khz to keep the power per unit bandwidth at the constant 10 mw per 25 khz. By adjusting the transmission power as above, the signa quaity, incuding signa strength, of the transmission as received at the base station shoud remain essentiay constant. [0021] To further maintain an essentiay constant signa quaity, the transmission power Wi be adjusted in response to the signa quaity factor measured 22 by the signa quaity factor monitor 15. The signa quaity factor is a measure of the physica imitations on the communication between the Wireess communication device 10 and the base station 11. Such imitations incude the distance and physica barriers between the Wireess communication device 10 and the base station 11. The signa quaity factor Wi change to indicate a change in transmission quaity such as When the Wireess communication device 10 moves away from the base station 11 or moves inside a buiding. To maintain an essentiay constant quaity factor, the transmission power Wi be increased if the signa quaity factor indicates a oss in signa quaity. [0022] The signa quaity, however, Wi inevitaby increase and decrease at the imits of the Wireess commu nication device s 10 dynamic power adjustment. As such, the signa quaity Wi decrease When the Wireess commu nication device 10 reaches the outer ranges of the operabe distance from the base station 11. Simiary, the signa
quaity Wi ikey increase as the Wireess communication device 10 comes Within a given distance from the base station 11. For the substantia range of distance between these two extremes, however, the various embodiments Wi adjust the transmission power such that the signa strength as measured at the base station 11 remains essentiay constant. [0023] One skied in the art Wi understand that obtaining a perfect constancy of signa quaity as measured at the base station 11 is neary impossibe. Instead, the adjustments to the transmission power Wi hep bring the signa strength as measured to Within an essentiay constant eve during the norma course of use. Aso, When using certain technoogies such as WiDEN technoogy for the Wireess communication device 10, the transmission power at certain bandwidths Wi?uctuate as an inherent nature of the moduation of the signa as much as 5 to 10 percent of the average transmission power. Thus, this known?uctuation Wi aso affect the natura variation of the strength of signa as measured at the base station 11. [0024] Certain embodiments account for the situation Where the strength of signa as measured by the base station 11 Wi naturay increase because of the shortening of the distance between the Wireess communication device 10 and the base station 11. In this situation, it is advantageous to not increase the transmission power of the Wireess communi cation device 10 When the bandwidth increases because the signa quaity at the base station 11 Wi not signi?canty improve. Instead, increasing the transmission power Wi ony consume additiona battery resources Whie not improv ing signa strength. Therefore, When the signa quaity factor monitor 15 senses such an increase in the signa quaity such that increasing the transmission power to account for an increase in bandwidth does not improve signa quaity, the transmission power Wi not be increased. [0025] Aternativey, embodiments account for the situa tion Where the strength of signa naturay decines during use of the Wireess communication device 10 near the outer boundaries of the communication ranges With the base station 11. Such an embodiment is described With reference to FIG. 3. In addition to monitoring the bandwidth 21 and monitoring a signa quaity factor 22, the maximum trans mission power monitor 16 monitors 30 the maximum trans mission power for the Wireess communication device, and the peak to average transmission power monitor 17 monitors 31 the peak to average transmission power for the Wireess communication device 10. Then the transmission power setting unit 13 adjusts 32 the transmission power as a function, at east in part, of the bandwidth, the signa quaity factor, the maximum transmission power, and the peak to average transmission power. [0026] More speci?cay, the transmission power Wi not be adjusted above a predetermined amount. The predeter mined amount is a ceiing that the transmission power shoud not exceed because the transmission power may reach above the Wireess communication device s 10 trans mission power imits. In particuar, certain technoogies for Wireess communication systems, such as WiDEN techno ogy, empoy a signa moduation arrangement Where the transmission power naturay?uctuates about an average transmission power. To avoid this natura?uctuation s push ing the transmission power past the Wireess communication device s 10 imits, the transmission power setting unit 13 Wi not adjust the transmission power above an amount determined by the difference between the maximum trans mission power and the peak to average transmission power for the Wireess communication device 10. [0027] Aternativey, the transmission power Wi not be increased above an amount determined by the difference between the maximum transmission power and the peak to average transmission power When the bandwidth is above a predetermined amount. Such an embodiment addresses the situation Where in certain technoogies, such as WiDEN technoogy, the power transmission?uctuations about the average transmission power are non-existent or When trans mitting at a base eve bandwidth, such as the 25 khz eve in WiDEN technoogy, minima. Thus, the arti?cia ceiing created by the power?uctuations of WiDEN technoogy is no onger necessary When transmitting at the base eve bandwidth. Therefore, the transmission power Wi not be increased above the difference between the maximum trans mission power and the peak to average transmission power ony if the bandwidth is above this base eve or predeter mined amount. If the Wireess communication device is transmitting at the ower bandwidth, the transmission power can be increased up to the maximum transmission power for the Wireess communication device 10. [0028] In a preferred embodiment as iustrated in FIG. 4, the bandwidth at Which the Wireess communication device 10 is transmitting is monitored 40. In addition, the signa quaity factor is monitored 41, the maximum transmission power is monitored 42, and the peak to average transmission power is monitored 43. In response to these monitored vaues, it is determined 44 Whether the signa quaity factor exceeds a predetermined eve. This predetermined eve is determined as the eve at Which increasing the transmission power to account for increases in bandwidth Wi not improve the signa quaity. If the signa quaity factor is such that any oss in transmission power due to a change in the transmission bandwidth Wi not drop the signa quaity beow a minimum eve, the transceiver 12 through the transmission power setting unit 13 Wi not increase the transmission power 45. [0029] If the signa quaity factor is not above the prede termined eve, it is determined 46 Whether the bandwidth exceeds a predetermined eve. If the bandwidth does not exceed the predetermined eve such as 25 khz for a Wireess communication device 10 using WiDEN technoogy, the transmission power Wi be adjusted 47 as necessary in response to the signa quaity factor to maintain an essen tiay constant signa strength at the base station 11. If the bandwidth does exceed the predetermined eve, it is deter mined 48 Whether an increase in the transmission power Wi exceed an amount determined by the difference between the maximum transmission power and the peak to average transmission power. If the increase in transmission power Wi exceed this amount such that the?uctuations in trans mission power Wi cause the transmission power to poten tiay exceed the maximum transmission power, the trans mission power Wi not be increased 49. If an increase in transmission power Wi not exceed this determined amount, the transmission power is increased 50 as necessary to maintain an essentiay constant signa quaity at the base station 11. It shoud be noted that these various factors need not be monitored in any particuar order. Aternativey, the order of the performance of the determination steps may be
changed. Further, one shoud note that the various embodi ments of the described method may be performed continu ousy during the use of the Wireess communication device 10 to account for constant changes in the various monitored factors during use. [0030] So con?gured, a Wireess communication device can make more effective use of its own native bandwidth agiity under at east some operating conditions by use of some or a of these adaptive power management techniques. By typicay increasing the transmission power When the Wireess communication device transmits at arger band Widths, the Wireess communication device provides a more consistent signa strength and quaity of signa. Aso, not increasing the transmission power When the signa strength is suf?cienty high can engthen battery ife. Aso, by moni toring the peak to average power, the transmission power can be set so as to not exceed the maximum transmission power of the Wireess communication device. [0031] Those skied in the art Wi recognize that a Wide variety of other modi?cations, aterations, and combinations can be made With respect to the above described embodi ments Without departing from the spirit and scope of the invention, and that such modi?cations, aterations, and com binations are to be viewed as being Within the ambit of the inventive concept. We caim: 1. A method comprising: monitoring a bandwidth of a transmission channe for a Wireess communication device; monitoring a signa quaity factor between the Wireess communication device and a base station; and adjusting a transmission power for the Wireess commu nication device as a function, at east in part, of the bandwidth of the transmission channe for the Wireess communication device and of the signa quaity factor between the Wireess communication device and the base station. 2. The method of caim 1 Wherein monitoring a bandwidth of a transmission channe for a Wireess communication device further comprises monitoring a bandwidth of a data transmission channe for a Wireess communication device. 3. The method of caim 1 Wherein monitoring a bandwidth of a transmission channe for a Wireess communication device further comprises monitoring a bandwidth of a trans mission channe for a Wireess communication device that uses WiDEN communication technoogy. 4. The method of caim 3 Wherein monitoring a bandwidth of a transmission channe for a Wireess communication device using WiDEN communication technoogy further comprises detecting a transmission channe bandwidth of any one of: 25 khz; 50 khz; 75 khz; and 100 khz. 5. The method of caim 1 Wherein monitoring a signa quaity factor between the Wireess communication device and a base station further comprises monitoring any one of: a power contro constant; a magnitude of signa; a ratio of desired signa to undesired signa; and a bit error rate. 6. The method of caim 1 Wherein the signa quaity factor is determined by the base station and transmitted from the base station to the Wireess communication device. 7. The method of caim 1 Wherein adjusting a transmis sion power for the Wireess communication device as a function, at east in part, of the bandwidth of the transmis sion channe for the Wireess communication device and of the signa quaity factor between the Wireess communica tion device and the base station further comprises increasing the transmission power for the Wireess communication device in response to monitoring an increase in the band Width of the transmission channe for the Wireess commu nication device. 8. The method of caim 7 Wherein increasing the trans mission power for the Wireess communication device in response to monitoring an increase in the bandwidth of the transmission channe for the Wireess communication device further comprises increasing the transmission power such that a strength of signa as corresponds to a transmission from the Wireess communication device as measured at the base station is essentiay constant per unit bandwidth over a substantia range of distance between the Wireess com munication device and the base station. 9. The method of caim 1 Wherein adjusting a transmis sion power for the Wireess communication device as a function, at east in part, of the bandwidth of the transmis sion channe for the Wireess communication device and of the signa quaity factor between the Wireess communica tion device and the base station further comprises not increasing the transmission power for the Wireess commu nication device When the signa quaity factor exceeds a predetermined amount. 10. The method of caim 1 further comprising: monitoring a maximum transmission power for the Wire ess communication device; monitoring a peak to average transmission power for the Wireess communication device; adjusting the transmission power for the Wireess com munication device as a function, at east in part, of the peak to average power for the Wireess communication device and the maximum transmission power for the Wireess communication device. 11. The method of caim 10 Wherein monitoring a peak to average power further comprises determining a power?uc tuation common to a transmission method used by the Wireess communication device. 12. The method of caim 11 Wherein determining a power?uctuation common to a transmission method used by the Wireess communication device further comprises determin ing a power?uctuation common to a WiDEN technoogy based transmission method used by the Wireess communi cation device. 13. The method of caim 10 Wherein adjusting the trans mission power for the Wireess communication device as a function, at east in part, of the peak to average power for the Wireess communication device and the maximum transmis sion power for the Wireess communication device further
comprises not increasing the transmission power for the Wireess communication device above a eve determined by a difference between the maximum transmission power for the Wireess communication device and the peak to average power for the Wireess communication device. 14. The method of caim 13 Wherein not increasing the transmission power for the Wireess communication device above a eve determined by a difference between the maximum transmission power for the Wireess communica tion device and the peak to average power for the Wireess communication device further comprises not increasing the transmission power for the Wireess communication device above a eve determined by the difference between the maximum transmission power for the Wireess communica tion device and the peak to average power for the Wireess communication device When the bandwidth is above a predetermined amount. 15. The method of caim 14 Wherein the predetermined amount is 25 khz When the Wireess communication device utiizes WiDEN transmission technoogy. 16. An apparatus comprising: a Wireess communication device transmission channe bandwidth monitor; a Wireess communication device signa quaity factor monitor; a Wireess communication device transceiver that is responsive to the Wireess communication device trans mission channe bandwidth monitor and the Wireess communication device signa quaity factor monitor. 17. The apparatus of caim 16 Wherein the Wireess communication device transceiver that is responsive to the Wireess communication device transmission channe band Width monitor and the Wireess communication device signa quaity factor monitor further comprises a transmission power setting means for adjusting the transmission power of the Wireess communication device as a function of, at east in part, a monitored bandwidth and a monitored signa strength. 18. The apparatus of caim 16 further comprising: a Wireess communication device maximum transmission power monitor; a Wireess communication device peak to average trans mission power monitor; and the Wireess communication device transceiver that is responsive to the Wireess communication device trans mission channe bandwidth monitor and the Wireess communication device signa quaity factor monitor is further responsive to the Wireess communication device maximum transmission power monitor and the Wireess communication device peak to average trans mission power monitor. 19. The apparatus of caim 18 Wherein the Wireess communication device transceiver that is responsive to the Wireess communication device transmission channe band Width monitor and the Wireess communication device signa quaity factor monitor and is further responsive to the Wireess communication device maximum transmission power monitor and the Wireess communication device peak to average transmission power monitor further comprises a transmission power setting means for adjusting the trans mission power of the Wireess communication device as a function of, at east in part, a monitored maximum trans mission power and a monitored peak to average transmis sion power. 20. An apparatus comprising: means for monitoring a bandwidth of a transmission channe for a Wireess communication device; means for monitoring a signa quaity factor between the Wireess communication device and a base station; and means for adjusting a transmission power for the Wireess communication device as a function, at east in part, of the bandwidth of the transmission channe for the Wireess communication device and of the signa qua ity factor between the Wireess communication device and the base station. 21. The apparatus of caim 20 further comprising: means for monitoring a maximum transmission power for the Wireess communication device; means for monitoring a peak to average transmission power for the Wireess communication device; means for adjusting the transmission power for the Wire ess communication device as a function, at east in part, of the peak to average power.