摘要:
Site, frequency, and backhaul planning for access points is disclosed where the placement of coverage access points in an urban area requires taking a section of a grid of size 2K by 2K blocks where K is a range of a coverage access point and placing a first coverage access point at a first intersection within the grid wherein the first intersection is defined by a first street and a second street. Removing the first street and the second street from the list and placing a second coverage access point at a second intersection considering the streets in the list. Iterating through the streets in the list until each street has a coverage access point. Further disclosed is frequency planning for the site and backhaul planning for the site.
摘要:
An automatic gain control includes a digital lowpass filter for filtering a series of digital samples generated by an analog-to-digital converter to generate a lowpass filtered digital sample series; a power averager coupled to the digital lowpass filter for calculating an average power of the lowpass filtered digital sample series; and a lookup table coupled to the power averager for setting a selectable gain of an amplifier coupled to the analog-to-digital converter as a function of the average power.
摘要:
A method and apparatus for reuse of pseudo-random noise (PN) offsets within a cell of a wireless communication system such as a multi-sector CDMA system. Adaptive antenna arrays are employed to form the multiple sector areas within the CDMA cell. A forward link data channel is established between a mobile unit and a base station via sectors that share or reuse comment PN offsets, thereby providing desirable transmit diversity.
摘要:
A method and apparatus provide for soft handoff operation of at least a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C). A mobile station (104) initially receives the first signal, detects presence of a pilot signal, measures pilot signal strength, transmits a pilot strength measurement message, fails to receive a handoff direction message after transmitting the pilot strength measurement message, searches for detecting presence of a broadcast control channel associated with the type IS-95C cell sites, measures a carrier to interference ratio of the broadcast control channel, compares the carrier to interference ratio to a threshold, if the carrier to interference ratio is above the threshold, initiates a second communication according to IS-95C standard, thus, allowing initiating a soft handoff operation by allowing the base sites to transmit information according to the IS-95B and IS-95C standards respectively via the first and second signals. MS 104 combines the first and second signals to take advantage of the soft hand-off operation.
摘要翻译:一种方法和装置提供至少根据第一通信标准(IS-95B)发送的第一信号和根据第二通信标准(IS-95C)传输的第二信号)的软切换操作。 移动站(104)首先接收到第一信号,检测导频信号的存在,测量导频信号强度,发送导频强度测量消息,在发送导频强度测量消息之后不能接收到切换方向消息,搜索检测到存在 与类型IS-95C小区站点相关联的广播控制信道,测量广播控制信道的载波干扰比,将载波与干扰比相比较,如果载波干扰比高于阈值,则启动一个 根据IS-95C标准的第二通信,从而允许基站通过第一和第二信号分别根据IS-95B和IS-95C标准传输信息来启动软切换操作。 MS 104组合第一和第二信号以利用软切换操作。
摘要:
A method and apparatus for maximal-ratio combining of received frame data is provided. This technique increases the reliability of a communication network that includes multiple independent receivers. For example, when multiple independent receivers are not in agreement as to the received frame data (501, 502, 503), an embodiment of the invention provides a higher likelihood of correctly identifying the received frame data (501, 502, 503). A technique for determining a signal-to-noise ratio from a metric signal (504) derived from a decoder (701) in a receiver is provided. The signal-to-noise ratio may be characterized according to a polynomial estimate or stored in lookup table. The signal-to-noise ratio is used to apply a weighting (805) to “hard decision” data from the receiver to yield a weighted value (806). The weighted value is combined with weighted values from other receivers. The combined weighted values are applied to a data slicer (414) to yield received data (807).
摘要:
A communication system (100) that includes base stations (103-109) comprising selection circuitry (207) is provided herein. The determination of a call anchoring base station (base station performing Code Division Multiple Access (CDMA) frame selection) is made based on the base station with a lowest mean work load. During communication with a remote unit (113), frames received by non-call anchoring base stations (105, 107) are backhauled to a switch (101). The switch (101) then sidehauls the frames to the call anchoring base station (103), where selection and call processing functions for the particular call takes place.
摘要:
In some implementations, a processor may retrieve predicted positioning data and predicted orbital data from global navigation satellite service (GNSS) positioning circuitry of a wireless device in response to a request for device time. The processor may retrieve long-term learning (LTL) data for a temperature sensing crystal (TSX) of the wireless device, the LTL data including S-curve characteristics of the TSX, and the time tracking uncertainty of the TSX. The processor may generate a GNSS-based device time estimate using the predicted positioning data and the predicted orbital data. The processor may perform TSX-based device time processing by updating the GNSS-based device time estimate using a clock signal of the TSX to generate a final device time estimate, the updating based on the retrieved LTL data for the TSX.
摘要:
Disclosed in some examples are methods, systems, and machine readable mediums that provide location based services such as navigation in an indoor space by utilizing a network of specially configured locator nodes (LNs) and the identified line of sight (LOS) relationships between the LNs. The LOS relationships may be automatically learned by the LNs.
摘要:
A method and apparatus provide for soft handoff operation of at least a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C). A mobile station (104) initially receives the first signal, detects presence of a pilot signal, measures pilot signal strength, transmits a pilot strength measurement message, fails to receive a handoff direction message after transmitting the pilot strength measurement message, searches for detecting presence of a broadcast control channel associated with the type IS-95C cell sites, measures a carrier to interference ratio of the broadcast control channel, compares the carrier to interference ratio to a threshold, if the carrier to interference ratio is above the threshold, initiates a second communication according to IS-95C standard, thus, allowing initiating a soft handoff operation by allowing the base sites to transmit information according to the IS-95B and IS-95C standards respectively via the first and second signals. MS 104 combines the first and second signals to take advantage of the soft hand-off operation.
摘要翻译:一种方法和装置提供至少根据第一通信标准(IS-95B)发送的第一信号和根据第二通信标准(IS-95C)发送的第二信号的软切换操作。 移动站(104)首先接收到第一信号,检测导频信号的存在,测量导频信号强度,发送导频强度测量消息,在发送导频强度测量消息之后不能接收到切换方向消息,搜索检测到存在 与类型IS-95C小区站点相关联的广播控制信道,测量广播控制信道的载波干扰比,将载波与干扰比相比较,如果载波干扰比高于阈值,则启动一个 根据IS-95C标准的第二通信,从而允许基站通过第一和第二信号分别根据IS-95B和IS-95C标准传输信息来启动软切换操作。 MS 104组合第一和第二信号以利用软切换操作。
摘要:
A method and system for dynamic rate switching via medium access channel layer signaling is disclosed, wherein data rates for high data rate channels are automatically shifted up or down based on a predetermined metric. In a preferred embodiment, data rates are automatically shifted up or down based on transmit channel gain required to maintain a required signal to noise ratio.