摘要:
Apparatus and methods are disclosed for mitigating interference to radio base stations. A first base station provides a served cell that at least partially overlaps a served cell of a second base station. The first and second base stations are part of a telecommunications system. The method includes identifying at least one carrier that is preferable for the second base station to utilize for communications with at least one UE to avoid interference. The method further includes communicating an instruction message from the first base station to the second base station that instructs the second base station to use the at least one carrier for communications.
摘要:
A method in a radio network node for identifying a candidate cell for handover of a user equipment is provided. The radio network node receives, from the user equipment, a first cell identifier associated with the candidate cell. The radio network node signals a cell identification request to at least one base station serving a cell using the first cell identifier. The cell identification request comprises a user equipment identifier associated with the user equipment (102), and requests any cell wherein the user equipment associated with the user equipment identifier can be detected. The radio network node receives a cell identification response comprising a second cell identifier associated with a detecting cell, 10 served by a detecting base station, wherein the user equipment associated with the user equipment identifier is detected. The radio network node then identifies the candidate cell based on the received second cell identifier.
摘要:
Embodiments herein relate to a method in a relay node (10) for acquiring information about a type of a radio network connection between a donor radio base station (12) and a radio base station (14). The relay node (10) and the donor radio base station (12) are comprised in a radio communications network and the donor radio base station (12) is serving the relay node (10). The relay node (10) receives a message from the donor radio base station (12), which message is indicating a type of radio network application protocol, which type is related to a type of the radio network connection between the donor radio base station (12) and the radio base station (14). The relay node (10) determines the type of the radio network connection based on the type of radio network application protocol indicated in the message. The relay node (10) also stores the type of radio network connection in relation to the radio base station (14) for selecting the type of radio network connection when later communicating with the radio base station (14).
摘要:
A method may include determining whether a discrepancy exists between scheduling headroom computable by a first device and scheduling headroom computable by a second device, determining one or more load measurements that the second device bases its computation of the scheduling headroom if it is determined that the discrepancy exists, modifying the one or more load measurements, and calculating the scheduling headroom based on the modified one or more load measurements.
摘要:
A domain name associated with a radio network node's operator or maintenance (OM) node is determined based on at least part of a radio node identifier and a radio network operator identifier. The radio network node sends the domain name to a domain name server. In response to sending the constructed domain name, the radio network node receives from the domain server an IP address for the OM node. The radio network node then initiates a connection with the OM node using the IP address. In one non-limiting example embodiment, the part of the radio node identifier is a radio network node vendor identifier.
摘要:
In a cellular radio system the power control status of a mobile station is used in the base stations to generate power control commands. Hereby a radio base station can select a power control method that is optimal for the situation at hand. This is obtained by communicating power control status to base stations or deriving power control status in a radio base station. The radio base station is adapted to select power control method based on the power control status. Thus, a base station can select the most suitable power control improvement method, even during soft handover, thereby making make use of the advantages of different types of power control improvement methods.
摘要:
A node (e.g., base station, signal processing unit) is described herein that includes a symbol detector and a method which are capable of suppressing interference caused by one user device (which may be in softer handoff mode) to reduce performance degradation to other intra-cell user devices and/or other inter-cell user devices (which may not be in softer handoff mode).
摘要:
The present invention relates to methods, a communication network node and a user equipment for detecting collision of physical cell identities in a communication network system comprising radio base stations each serving at least one cell through which user equipments are moving. Reference signals comprising reference symbols corresponding to a physical cell identity are sent from said radio base stations to said user equipments over a radio interface. Transmission gaps of reference symbols are inserted in the reference signal in order to perform a physical cell identity collision test. The user equipments are arranged to detect if any other radio base station is sending reference symbols corresponding to the same physical cell identity during the transmission gaps. Thereby a physical cell identity collision is detected. The reference symbol transmission gaps are fractionally distributed within said reference signal such that at least some of said reference symbols are unaffected by said reference symbol transmission gaps.
摘要:
The present invention relates to a method and a communication network node for enabling auto-tuning of preamble sequences used during random access procedures when user equipments (18) are accessing a communication network system comprising radio base stations (15) each serving at least one cell (19) and with which said user equipments (18) are communicating on uplink (13) and downlink (12) channels. An initial set of RACH preamble sequences in one cell of a radio base station (15) and statistics on RACH usage and information on identified RACH preamble sequences potentially conflicting between neighbours of said radio base station (15) is collected. The collected statistics is used for optimizing said set of RACH preamble sequences, whereby the initial set of RACH preamble sequences is replaced with the optimized set of RACH preamble sequences.
摘要:
Random access coverage is assured while at the same time supporting high uplink data rates in a same service area served by a base station. A set of radio resources are shared by multiple mobile terminals for transmitting uplink to the base station including requests for access to service from the base station and transmissions for active connections with the base station. A first repeating time period and a second different repeating time period are defined. Uplink transmission grants are scheduled for active connections that permit use of a greater amount of the radio resources during the first repeating time period. Uplink transmission grants are also scheduled for active connections that permit use of a smaller amount of those resources during the second repeating time period. At least some random access requests to the base station are controlled to occur only during the second repeating time period.