Methods and apparatus for controlling the transmission and/or reception of safety messages by portable wireless user devices
A technology of equipment and power consumption, applied in the direction of location information-based services, specific environment-based services, advanced technologies, etc., can solve the problems of unhelpful, redundant, and ineffective use of roads in battery resources, and achieve the effect of saving battery power.
Inactive Publication Date: 2019-09-10
QUALCOMM INC
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Problems solved by technology
[0009] Enabling reception of safety messages transmitted in the spectrum allocated for safety messages may require the 802.11p radio to be switched on for significant durations and may be a burden in terms of drain on battery power
Thus, leaving the receiver switched on with respect to safety messaging operations in an environment where pedestrian users do not interact with road traffic can result in an unproductive use of battery resources
[0010] In addition, a large number of pedestrian users who do not use the road efficiently can quickly congest the use of safe passages
For example, both the driver's and passenger's cell phones of a vehicle may transmit safety messages, which may be redundant when a vehicle with the driver and passenger inside transmits safety messages
Method used
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[0030] figure 1is a diagram of an exemplary system 100 that supports communication of safety messages, such as DSRC safety messages, in accordance with various exemplary embodiments. Exemplary system 100 includes a building 102 that includes a plurality of base stations (base station 1104 , . . . , base station N 106 ) and an acoustic building transmitter 108 . The base stations (104, . . . , 106) respectively transmit signals comprising RF reference signals (103, . The acoustic building transmitter 108 emits an acoustic signal 107 that can, and is sometimes used by detecting a mobile communication device to recognize that the detected mobile device is currently located in the building 102 . In some embodiments, multiple acoustic emitters are located at different locations in the building, thereby facilitating ranging determinations within the building by the mobile wireless communication device. System 100 further includes a plurality of Femtocells (Celtocell 1 126, . . . ...
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Safety message monitoring operations and / or safety message transmission operations are controlled for a mobile wireless communications device. The periodicity with regard to safety message monitoringand / or safety message transmissions is varied based on the environment of the mobile wireless device. The transmission power level with regard to safety message transmissions is varied based on the environment of the mobile wireless device. In some embodiments, safety message monitoring and transmission operations are disabled when the mobile device is determined to be inside a building or insidea vehicle. In some embodiments, safety message monitoring rate and safety message transmission rate is varied as a function of proximity to vehicular traffic and / or the level of detected vehicular traffic. In some embodiments, safety message transmission power level is varied as a function of proximity to vehicular traffic and / or the level of detected vehicular traffic.
Description
[0001] Information about divisional applications [0002] This case is a divisional application. The parent case of this divisional case is an invention patent with an application date of October 9, 2014, an application number of 201480055301.2, and an invention title of "Method and Device for Controlling the Transmission and / or Reception of Security Messages by Portable Wireless User Devices" application case. technical field [0003] Various embodiments are directed to controlling the transmission and reception of security messages by portable wireless communication user devices, such as cell phones, laptops, and / or other handheld devices. Background technique [0004] The 802.11p standard has been proposed for the 5.9GHz spectrum for vehicle safety and commercial use. The FCC has allocated seven 10MHz channels, each of which is used for this purpose. It is envisioned that vehicles will periodically broadcast safety messages indicating their position and speed on the r...
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IPC IPC(8): G01C21/20H04W4/02H04W52/02H04W4/40H04W4/029H04W4/20
CPCH04W52/0254H04W52/0277H04W4/023H04W4/027G01C21/20H04W64/00H04W4/40H04W4/029Y02D30/70H04W4/20H04W4/02
Inventor 孙达尔·苏布拉马尼亚安杨思超吴新宙厉隽怿
Owner QUALCOMM INC