摘要:
Embodiments herein relate to a method in a mobile terminal (10) for requesting access to a wireless communication system. The mobile terminal (10) receives broadcasted system information directly indicating first access request preambles for a first contention based channel, and indirectly indicating second access request preambles for a second contention based channel based on the directly indicated first access request preambles. The mobile terminal (10) further derives the second access request preambles from the first access request preambles. Additionally, the mobile terminal requests access using the second access request preambles or the first access request preambles to access the wireless communication system.
摘要:
Embodiments herein relate to a method in a mobile terminal (10) for requesting access to a wireless communication system. The mobile terminal (10) receives broadcasted system information that indicates a first available resource of a contention based channel. The mobile terminal (10) derives a second available resource of the contention based channel based on the first available resource of the contention based channel. The mobile terminal (10) further transmits an access request preamble mapped to the second available resource to access the wireless communication system.
摘要:
Techniques for a mobile station to signal a request for a reduction in data transmission rate to a base station are disclosed. An example method for facilitating flow control in a wireless communication system includes monitoring resource use associated with a mobile station and, based upon the resource use, setting a congestion indicator in a header of at least one uplink traffic data packet. The uplink traffic data packet is then sent to a wireless base station, which detects the congestion indicator. In some embodiments, ECN bits in an IP header of the uplink traffic data packet are set. In other embodiments, ECN bits in an IP header of a downlink traffic data packet are set, to trigger the generation of a TCP header that indicates congestion in subsequent uplink packets.
摘要:
Embodiments disclose a method in a communication device in a telecommunications network. The first communication device receives an emergency notification from a broadcasting unit indicating a cell associated to the first communication device wherein the emergency is to be notified to a user equipment. The first communication device determines a paging channel to be used to page and broadcast within the cell a notification indicating an emergency and orders the notification indicating an emergency to be transmitted on the paging channel. The first communication device determines a common control channel to be used to broadcast an emergency confirm message within the cell, and orders the emergency confirm message to be transmitted on the common control channel.
摘要:
The present invention relates to a method, a user equipment and a network node in a cellular radio network. According to the method of the present invention, the network units detects a failed transmission of a handover command to the UE, which is still having a uplink channel available, and further receives a RRC message from the UE indicating the loss of a serving cell and indicating the strongest cell. The network unit prepares and initiates a new serving cell re-establishment and sends to the UE a RRC reconfiguration message. The UE can then continue normal operation in the new cell.
摘要:
Communication efficiency may be enhanced by using compressed headers. In an example embodiment, a method is performed by a transmitting device to reduce header size. A mapping is created between a logical channel identifier and a compressed logical channel identifier. The compressed logical channel identifier occupies fewer bits than the logical channel identifier. The mapping is transmitted to a receiving device. A compressed header that includes the compressed logical channel identifier is formulated. A communication that includes the compressed header is transmitted to the receiving device. In another example embodiment, a method is performed by a receiving device to decode a header having a reduced size. A mapping and a communication including a compressed header are received. A compressed logical channel identifier is extracted from the compressed header. A logical channel identifier is recovered from the compressed logical channel identifier using the mapping.
摘要:
In a method of improved media frame transmission in a communication network. Initially a plurality of “original” or regular media frames are provided for transmission. According to the invention, robust representations of the provided regular media frames are generated and stored locally. Subsequently, one or more of the regular media frames is/are transmitted. The invention detects an indication of a loss of a transmitted media frame, and the idea is to transmit, in response to a detected frame loss, a stored robust representation of the lost media frame and/or a stored robust representation of a subsequent, not yet transmitted, media frame to increase the media quality.
摘要:
The invention relates to a technique for uplink data transmissions in, e.g., mobile networks. A method embodiment for performing the technique in a transmitter (122) comprises the steps of allocating, for a first transmission (T1′) as the transmission power for an uplink control channel (UCOCH), the smaller of an available transmission power and a desired transmission power for the uplink control channel; and allocating, for at least one subsequent transmission (T2′) triggered by a feedback indication (128), zero transmission power to the uplink control channel (UCOCH).
摘要:
Embodiments herein relate to a method in a mobile terminal (10) for requesting access to a wireless communication system. The mobile terminal (10) receives broadcasted system information directly indicating first access request preambles for a first contention based channel, and indirectly indicating second access request preambles for a second contention based channel based on the directly indicated first access request preambles. The mobile terminal (10) further derives the second access request preambles from the first access request preambles. Additionally, the mobile terminal requests access using the second access request preambles or the first access request preambles to access the wireless communication system.
摘要:
Techniques for a mobile station to signal a request for a reduction in data transmission rate to a base station are disclosed. An example method for facilitating flow control in a wireless communication system includes monitoring resource use associated with a mobile station and, based upon the resource use, setting a congestion indicator in a header of at least one uplink traffic data packet. The uplink traffic data packet is then sent to a wireless base station, which detects the congestion indicator. In some embodiments, ECN bits in an IP header of the uplink traffic data packet are set. In other embodiments, ECN bits in an IP header of a downlink traffic data packet are set, to trigger the generation of a TCP header that indicates congestion in subsequent uplink packets.