摘要:
Aspects of the present invention relate to improved systems and methods for handing over a UE from a source node to a target node. In some embodiments, the target node receives UL and DL count information directly from the UE being handed over, rather than from the source node or from a core network node.
摘要:
In a method of managing radio link failure based on the RRC protocol in a user equipment node communicating over a radio link with a radio base station node in a wireless communication system, the user equipment node detecting (S10) a radio link failure. Subsequently, the user equipment node transmitting (S20) a RRC connection reestablishment request for the failed radio link, and receiving (S30) a RRC connection reject message together with redirection information indicating an alternative radio link to another radio base station node. Finally, the user equipment transmitting (S40) a RRC connection request based on the redirection information to the other radio base station node.
摘要:
A system and method in a wireless communications environment maximizes voice quality in low capacity situations. A Mobile services Switching Centre (MSC) that is associated with a base station of a cell is capable of assigning speech calls of mobile terminals to either a full-rate (FR) or a half-rate (HR) channel. The FR channels provide better transmitted voice quality but consume twice the bandwidth (two time slots versus only one for HR channels). When occupied cell capacity is low, an MSC assigns connections to FR channels. After occupied cell capacity reaches a predetermined threshold value, the MSC assigns connections to HR channels whenever possible. Also, handover procedures can reclaim available capacity by switching a connection from a FR to a HR channel. The superior voice quality of the FR channels are therefore provided to mobile terminal users more often.
摘要:
Method in a network node (110) comprised in a wireless communication system (100), for adjusting size of a cell (115) served by the network node (110). The method comprises estimating (304) a parameter value, related to a number of unsuccessful network connection attempts made by one or more user equipment (120) during a measurement period, and/or a number of dropped user equipment connections to the network node (110) during the measurement period. Further, the method comprises comparing (305) the estimated (304) parameter value with a threshold value, and adjusting (306) the size of the cell (115), based on the result of the comparison (305) of the estimated (304) parameter value with the threshold value.
摘要:
The disclosure relates to a method (30) for radio bearer release performed in a base station node (2) of a communication system (5). The base station node (2) provides one or more radio bearers to a user equipment (1), and the communication system (5) comprises a serving gateway (4). The method (30) comprises: receiving (31) an error message from the serving gateway (4), the error message indicating a faulty radio bearer; awaiting (32), for a delay time, additional error messages indicating faulty radio bearers; and releasing (33) the one or more radio bearers being indicated as faulty.
摘要:
In order to prevent a mobile terminated (MT) call to a user equipment (UE) from being lost by addressing a Location Area/Tracking Area (LA/TA) mismatch problem that could occur during a circuit switched (CS) Fallback, the method comprises the steps of: receiving a paging message from a mobility management entity, MME, where the paging message identifies suitable location areas, the paging message is sent because a first mobile switching center, MSC1, received a MT call request for the UE; determining that there are no 2G/3G cells belonging to the suitable location areas based on a current location of the UE; identifying a target 2G/3G cell in a location area associated with the current location of the UE but not part of the 2G/3G cells belonging to the suitable location areas; and enabling a signaling connection to be established between the UE and the first MSC1 via a second mobile switching center, MSC2, where the second MSC2 interfaces with a base station controller, BSC2, or a radio network controller, RNC2, that manages the target 2G/3G cell, where the signaling connection allows the MT call to be established with the UE.
摘要:
The invention relates to a method in a Mobility Management Entity (10,11) for handling a setup of an S1 Application Protocol signalling connection between a first radio base station and the Mobility Management Entity (10,11) in a Long Term Evolution radio communications network. The Mobility Management Entity (10,11) receives an S1 Setup Request message from the first radio base station (12). Furthermore, the Mobility Management Entity (10,11) sends an S1 Setup Response message to the first radio base station (12) enabling the first radio base station to handle the setup of the S1 Application Protocol signalling connection. The S1 Setup Response message comprises an indication of at least one supported tracking area code of a tracking area, which tracking area is served by the Mobility Management Entity (10,11).
摘要:
A mobility management entity (MME) for setting up a call includes a first network interface which receives a tracking area update (TAU) request from a user equipment (UE). The MME includes a processing unit which translates the TAU request into a location area update (LAU) request. The MME includes a second network interface in communication with the processing unit which sends the LAU request to a mobile switching center (MSC) selected as a tracking MSC thereby establishing the MME as a network node through which the UE is paged. The second network interface receiving a LAU response from the tracking MSC that includes at least information identifying one or more suitable location area identifiers (LAI(s)) to which handover is allowed and Network Resource Identifier (NRI) information where the information indicates that the tracking MSC controls the suitable LAI(s), and the processing unit translating the LAU response into a TAU response which is sent through the first network interface to the UE.
摘要:
In order to prevent a mobile terminated (MT) call to a user equipment (UE) from being lost by addressing a Location Area/Tracking Area (LA/TA) mismatch problem that could occur during a circuit switched (CS) Fallback, the method comprises the steps of: receiving a paging message from a mobility management entity, MME, where the paging message identifies suitable location areas, the paging message is sent because a first mobile switching center, MSC1, received a MT call request for the UE; determining that there are no 2G/3G cells belonging to the suitable location areas based on a current location of the UE; identifying a target 2G/3G cell in a location area associated with the current location of the UE but not part of the 2G/3G cells belonging to the suitable location areas; and enabling a signaling connection to be established between the UE and the first MSC1 via a second mobile switching center, MSC2, where the second MSC2 interfaces with a base station controller, BSC2, or a radio network controller, RNC2, that manages the target 2G/3G cell, where the signaling connection allows the MT call to be established with the UE.
摘要:
The present invention is a method and system adapted to facilitate, between a mobile station (MS) and network, an indication of support for reduced time transmission interval (RTTI). The MS can provide a base station system (BSS) with an indication of its multislot capability within an access burst sent at the start of a contention based access. In another aspect, the MS can indicate support for a new Immediate Assignment message as the conventional Immediate Assignment message can only assign single timeslots. The present invention enables the Radio Access Network (RAN) to assign RTTI and more than one timeslot for GPRS/EDGE temporary block flows (TBFs) during an Access Grant Channel (AGCH) assignment. The method of the present invention can be implemented in a computer program product or distributed software adapted to be loaded into at least one or a plurality of memory locations and executed by at least one or a plurality of respective computer processors.