Abstract:
The invention concerns a method (200) and system (100) for consolidating PSCs. In particular, in a mixed media environment having a plurality of application connections associated with different PSCs, the method can include the steps of identifying (210) a primary application connection, defining (210) a consolidated PSC based on a demand property of the primary application connection and consolidating (212) at least some of the remaining application connections with the consolidated PSC. As such, the consolidated PSC may be associated with multiple application connections. The method can also include the steps of deactivating (218) the consolidated PSC when a deactivation indicator is received and reactivating (224) the consolidated PSC when a reactivation indicator is received.
Abstract:
The invention concerns a method (600) and device (100) for collision avoidance using sleep frames (720). The method can include the step of - in a multi-mode device (100) - conducting (630) a communication in accordance with an 802.16 communications protocol in which the 802.16 communication protocol communication includes both listening frames (710) and sleep frames. The method can also include the step of conducting (640) in the multi-mode device another communication in accordance with a Bluetooth communications protocol that supports extended synchronous connection-oriented mode. The method can also include the step of arranging (640) transmissions of the Bluetooth communication to avoid collisions with transmissions of the 802.16 communication.
Abstract:
The invention concerns a method (200) and system (100) for setting a paging indication sequence (512) in paging messages (510). In one arrangement, the method can include the steps of - in a mixed media environment - receiving (212) incoming traffic designated for one or more mobile stations (112) in a paging group in which the mobile stations are capable of operating time-critical applications and ordering the paging indication sequence of the paging messages. The ordering can be performed such that higher priority identifiers (514) associated with the time-critical applications are positioned in front of lower priority identifiers (516) to reduce the connection set-up time for the time-critical applications of the mobile stations. As an example, the time-critical applications may be real-time applications, and the lower priority identifiers may be associated with non-real-time applications.
Abstract:
A method and system for supporting fast connection set-up in a communication network. The method can include the steps of - in a mobile station that is capable of operating in at least two separate power saving modes, a first power saving mode and a second power saving mode, entering an operational state associated with the second power saving mode and staying in the first power saving mode. This process can enable the mobile station to avoid entry into the second power saving mode during the operational state. In the first power saving mode, the mobile station may remain registered with a communication network. In the second power saving mode, the mobile station may be de-registered from the communication network. The first power saving mode can be a sleep mode, and the second power saving mode can be an idle mode.
Abstract:
The invention concerns a method (200) and system (100) for coordinating a sleep mode wake-up time. The method can include the steps of entering (214) a sleep mode and selecting (214) a paging group, advising (216) a base station (110) of the sleep mode and the selection of the paging group and coordinating (218) a wake-up time of the sleep mode with a second power saving mode that includes a common availability time (312) for mobile stations (116) communicating with the base station to detect signals from the base station. As an example, the second power saving mode (300) can be an idle mode, and the common availability time can be a listening interval of the idle mode.
Abstract:
The invention concerns a method (200) and system (100) for improving the efficiency of a mobile station (112) during a listening interval (310). The method can include the step of setting (212) a paging message indicator (414) or a neighbor advertisement message indicator (416) in which the paging message indicator indicates whether a paging message (314) is the last paging message designated for the mobile station in the listening interval and the neighbor advertisement message indicator indicates the presence of a neighbor advertisement message (316). The method can also include the step of transmitting (214) the paging message indicator or the neighbor advertisement message indicator to the mobile station. Based on these indicators, the mobile station can selectively enter a sleep state during and/or after the listening interval to conserve battery life.
Abstract:
The invention provides an enhanced passive scanning method for a wireless local area network, including the steps of transmitting at least one of a beacon signal (706) or a gratuitous probe response (710) in a WLAN channel by an access point. The gratuitous probe response is a supplemental beacon signal that is transmitted at intervals between the occurrence of regular beacon signals, but contains only essential information to allow mobile station manage roaming and timing.
Abstract:
A mobile station establishes a schedule by which data is exchanged with an access point. The schedule allows the mobile station to use a low power mode (608) at times outside of the scheduled service periods. However, the mobile station may occasionally need to retrieve additional data from the access point, or transmit additional data to the access point, and so initiates an unscheduled service period to do so (614).
Abstract:
A mobile station (106) establishes a real time communication link via an access point (102) for carrying voice or other time-sensitive data. A WLAN subsystem (204) of the mobile station is normally kept in a low power state. Upon initiating a communication link the mobile station signals to the access point that uplink poll-based power save delivery mode will be used (614), and the access point reserves resources to assure the necessary quality of service. The mobile station initiates a frame transaction by first powering up the WLAN subsystem (712), acquiring the WLAN channel (407), and transmitting a polling frame. Upon successful receipt of the polling frame the access point prepares to reply with a response frame at an unspecified time within service window, during which time the mobile station maintains the WLAN subsystem power up and ready to receive the response frame. Upon successful receipt of the response frame, the mobile station places the WLAN subsystem back into a low power state.
Abstract:
A mobile communication device (102) contains both a WAN modem (122) and a PAN modem (134) which operate on interfering radio frequencies. To mitigate interference, and still permit real-time communication operation, the PAN is prevented from transmitting while the WAN is receiving (714). The PAN carries the real-time data via an active link (144) between the PAN modem and a remote device (142). The active link uses a retransmission protocol, which allows recovery of suppressed packets within a given period. The PAN modem is disabled for periods shorter than a maximum time which guarantees success transmission or retransmission of the PAN data. To further aid successful operation of the PAN retransmission operation, the WAN base station aggregates data into a single downlink burst.