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2748 results about "Radio Resource Control" patented technology

The Radio Resource Control (RRC) protocol is used in UMTS and LTE on the Air interface. It is a layer that exists between UE and eNB and exists at the IP level. This protocol is specified by 3GPP in TS 25.331 for UMTS and in TS 36.331 for LTE. RRC messages are transported via the PDCP-Protocol.

Method for radio resource control

In order to control the use of physical radio resources, the physical radio resources are divided into chronologically consecutive frames (14), so that a frame contains slots (16, 17, 18) of various sizes, which slots represent a given share of the physical radio resources contained in the frame and can be individually allocated to different radio connections. The first dimension of a frame is time and the second dimension can be time, frequency or code. In the direction of the second dimension the slots represent various sizes, and a given first integral number of slots of the first size can be modularly replaced by another integral number of slots of another size. A certain number of consecutive frames form a superframe (19), in which case frames with corresponding locations in consecutive superframes are equal in slot division and allocations, if the data transmission demands do not change. Changes in the state of occupancy of the slots are possible at each superframe. In order to form an uplink connection, the mobile station sends a capacity request, where it indicates the type of requested connection and the demand of resources. In order to form a downlink connection, the base station subsystem sends a paging call, where it indicates the location in the superframe of the slots allocated to the connection. In order to indicate the state of occupancy, the base station subsystem maintains a superframe-size parametrized reservation table.
Owner:NOKIA TECHNOLOGLES OY

State conversion method, state keeping method and device, and user equipment

The invention discloses a state conversion method, and a state keeping method and device, and belongs to the technical field of communications. The method comprises the following steps: when user equipment is under an unactivated state and satisfies a first predetermined condition, converting the user equipment into an idle state from the unactivated state; when the user equipment is under the unactivated state and satisfies a second predetermined condition, keeping the user equipment under the unactivated state; and when the user equipment is under the unactivated state and satisfies a third predetermined condition, converting the user equipment into a connected state from the unactivated state, wherein the unactivated state is an intermediate state between the connected state and the idle state. The state conversion method, and the state keeping method and the device provided by the invention solve the problem that when the UE (User Equipment) receives and sends small data packet services in 4G (the 4th Generation mobile communication technology), the UE needs to switch between an RRC (Radio Resource Control) connected state and an RRC idle state back and forth to lead to signaling resources waste, thereby achieving the effects that the UE can receive and send the small data packet services under the unactivated state, and the signaling resources are saved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Channel assignment based on service type and wireless communication environment

The present invention provides a method and an apparatus for assigning a channel in response to a request for service for a mobile station in a wireless communication network serving a plurality of regions, such as cells in a digital cellular network. The mobile station may be located in one of the plurality of regions. The method comprises determining a first indication of congestion on a forward access channel and a second indication of congestion on a random access channel and assigning at least one channel of a plurality of channels to the mobile station based on the determined first and second indications of congestion. Based on the first indication of congestion, a first threshold may be adjusted for the forward access channel and a second threshold may be adjusted based on the second indication of congestion on the random access channel. A service type of the request for service and a condition of wireless communication environment may be determined for transmission of data over the wireless communication network and to decide if a specific signaling connection for the mobile station located in one of plurality of regions shall be established in a particular mobile station state including a cell dedicated channel state and a cell forward access channel state based on the service type and the condition of wireless communication environment. In this manner, signaling requests, such as radio resource control signaling requests may be classified into different service types and different radio frequency environment conditions, providing an efficient packet data transmission in a wireless communication system by deciding which state to use under different scenarios. By including a wireless communication environment condition, such as the current radio frequency environment status in a channel assignment decision making, a signaling connection may not experience an inferior quality and may avoid a delay and occurrences of dropped connections.
Owner:RPX CORP +1
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