Abstract:
A method for managing access channel traffic during congested network conditions is disclosed. A wireless connection device (WCD) sends a service request to a particular base station for a particular quantity of network resources. Upon the particular base station determining that it is too loaded with network traffic to accommodate the service request, the base station saves an indication of the WCD's connection request, and responds with a communication to instruct the WCD to idle and wait for a page from the base station. The WCD, upon receiving the communication, does not send a service request for a greater quantity of network resources than the particular quantity until the WCD receives a page. Once the base station determines it has sufficient network resources to allocate to the WCD, the base station sends a page to the WCD, which causes the WCD to send another service request.
Abstract:
Various embodiments are described for considering the congestion level of an inter-base-station link during handoff of a mobile station. In one embodiment, the source and target base stations are communicatively linked via (i) a backhaul link on which a backhaul-network entity resides and (ii) an inter-base-station link on which the backhaul-network entity does not reside. A congestion level of the inter-base-station link is determined. Furthermore, a determination is made to hand off the mobile station from the source base station to the target base station. The mobile station is handed off using the backhaul link and not the inter-base-station link if the determined congestion level of the inter-base-station link exceeds a congestion threshold.
Abstract:
A method and system is disclosed for coordinating codec consistency across wireless coverage areas. When a new communication session is set up for an access terminal in a given wireless coverage of a wireless communication system, a network device, such as a base station, can determine a coding rate to assign for the new session in a manner that accounts for network capacity variations across the wireless coverage areas. The network device can determine a weighted average of coding rates supported in a given wireless coverage area and in each of one or more neighboring wireless coverage areas. Weighting factors in the weighted average can account for rates of inbound and outbound handoffs from and to the neighboring wireless coverage areas. The network device can then select a coding rate for the new communication session based on the determined weighted average.
Abstract:
A wireless network includes first-configuration sectors with a first frequency assignment and second-configuration sectors with a second frequency assignment. When served by a first-configuration sector that borders a second-configuration sector, the mobile station receives (i) a neighbor list that identifies neighbor sectors of the primary sector, including the second-configuration sector, (ii) a primary-sector reference distance between a transmitter for the primary sector and a reference point in the primary sector, and (iii) a neighbor-sector reference distance between a transmitter for the second-configuration sector and the reference point. Based on the reference distances, the mobile station calculates a border distance between the primary sector's transmitter and a border between the sectors. The mobile station compares its distance from the primary sector's transmitter to the primary-sector reference distance and/or border distance. Based on the comparison, the mobile station selects a scanning algorithm that determines when to scan for the second-configuration sector.
Abstract:
A UE may be configured to support wireless communication in two or more frequency bands. In some embodiments, the UE initiates a first wireless communication session in a first frequency band of the two or more frequency bands, and in response to initiating the wireless communication session in the first frequency band, the UE prevents itself from communicating in a second frequency band of the set of two or more frequency bands until the first wireless communication session has ended. Some embodiments further include subsequently enabling the UE to communicate in the second frequency band of the set of two or more frequency bands in response to ending the first wireless communication session in the first frequency band.
Abstract:
A request to establish a call involving a wireless communication device WCD served by a radio access network (RAN) may be received. The WCD may receive signals from the RAN via a plurality of wireless coverage areas at respective signal strengths. The plurality of wireless coverage areas may be defined by the RAN. A media codec to use for the call may be determined. Based on the media codec, a set of n wireless coverage areas through which the WCD and the RAN communicate during the call may be selected. The value of n may be between 1 and a predetermined maximum number, and the set of n wireless coverage areas may be selected from the plurality of wireless coverage areas.
Abstract:
Disclosed is a method and corresponding apparatus to make use of hybrid-ARQ repetition factors as a way to differentiate service quality to various mobile terminals. Depending on a mobile terminal's subscription service class, such as the mobile terminal's PLMN, the mobile terminal may be made to use a particular hybrid-ARQ repetition factor. For instance, a mobile terminal of a high service class may be made to use a low hybrid-ARQ repetition factor, which may help the mobile terminal experience less downlink transmission delay and thus a higher downlink data rate. Whereas, a mobile terminal of a low service class may be made to use a high hybrid-ARQ repetition factor, which may cause the mobile terminal to experience more downlink transmission delay and thus a lower downlink data rate, and may further free up downlink transmission resources to facilitate better service for other mobile terminals.
Abstract:
A RAN includes a first coverage area and a second coverage. An access terminal, initially engaged in a call via the first coverage area, determines a call type of the call and adjusts, based on the determined call type, one or both of a first value for a first threshold and a second value for a second threshold. While engaged in the call, the access terminal determines that (i) a signal strength of a signal received from the first coverage area is less than the first threshold, and (ii) a signal strength of a signal detected from the second coverage area is greater than the second threshold. In response to making both determinations, the access terminal hands off the call from the first coverage area to the second coverage area.
Abstract:
Disclosed herein are methods and systems that may help to determine and/or adjust parameters for zone-based paging over CDMA paging channels, based on the prevalence of devices that are configured for enhanced circuit switch fallback (eCSFB) in one or more paging zones. For example, a switch in a radio access network (RAN) may: (a) determine a respective measure of CSFB-device prevalence in one or more paging zones in the RAN, (b) use the respectively determined measure of CSFB-device prevalence in at least one of the paging zones as a basis to determine one or more parameters for zone-based paging in the at least one of the paging zones, and (c) apply the one or more determined parameters for zone-based paging in the at least one of the paging zones.
Abstract:
Various embodiments are described for redirecting a mobile station via a traffic channel. In one embodiment, a first RAN receives a request from a mobile station to establish a traffic channel between the mobile station and the first RAN for use in a communication session. The first RAN makes a determination to not establish the communication session, but nevertheless establishes the requested traffic channel after making the determination. Then, without establishing the communication session, the first RAN redirects the mobile station via the established traffic channel to a second RAN. By establishing the traffic channel even though the RAN may be unable (or unwilling) to allow the mobile station to establish the communication session, the RAN is able to control the behavior of the mobile station in the event that the RAN cannot establish the requested communication session.