Telefonaktiebolaget Lm Ericsson (publ)

Luis Felipe Del Carpio Vega

Anna Larmo

Vicknesan Ayadurai

Divya Peddireddy

Yu Wang

Parth Amin

Zaib Zubair

Eda Genc

Leif Wilhelmsson

Dennis Sundman

Ari Keränen

Guido Roland Hiertz

Maria Ines Robles

Behnam Badihi

Miguel Lopez

Osman Nuri Can Yilmaz

Zhenhua Zou

Meng Wang

Edgar Ramos

Jaime Jiménez

Soma Tayamon

Dzevdan Kapetanovic

Nicklas Beijar

Wei Shen

Mohit Sethi

Tero Kauppinen

Petri Laari

In one example aspect, a method of transmitting packets wirelessly is provided. The method comprises, for each packet, requesting to transmit the packet, waiting for a respective random or pseudorandom time period before transmitting the packet, and transmitting the packet containing a respective data portion, wherein a position of the respective data portion in the packet is selected such that a time interval between transmission of respective data portions in adjacent packets is a constant time interval.

Transmitting and receiving packets wirelessly with time based packet data portion positioning

Disclosed is a latency control method of a transmitter apparatus adapted for transmission of a plurality of packets under clear channel assessment requirements and latency requirements. The method comprises determining a maximum required time for clear channel assessment for the plurality of packets and determining a duration of time related to the determined maximum required time. For example, the duration of time may be determined as being equal to the determined maximum required time for clear channel assessment plus an offset. The offset may be equal to zero, or may be equal to a positive value. In some embodiments, the offset may be equal to, or larger than, a duration of another packet (which is not comprised in the plurality of packets). The method also comprises enforcing, for each packet of the plurality of packets, the determined duration of time to elapse after completion of transmission of the packet, before transmission of a subsequent packet of the plurality of packets is initiated. Corresponding latency control apparatus, transmitter apparatus, communication device and computer program product are also disclosed.

Latency control

A prioritization method for random access, comprising receiving one or more first packet flow for transmission, wherein the one or more first packet flow is assigned a respective access category queue, initiating a random access procedure for the first packet flow, receiving a packet of a second packet flow for transmission, wherein the second packet flow is assigned an access category queue having priority over the access category queue assigned to the first packet flow, issuing an indication configured to interrupt the random access procedure for the first packet flow, and performing a random access procedure for the received packet of the second packet flow wherein idle time slots previously sensed by the random access procedure for the first packet flow are considered as sensed also for the random access procedure for the second packet flow. Corresponding apparatus and computer program product are also disclosed.

Prioritization for random access

Embodiments described herein relate to methods and apparatus for performing link adaptation processes in a network. A method in a transmitting node in a wireless local area network comprises obtaining a first traffic flow for transmitting to a receiving node, wherein the first traffic flow is associated with a first category based on a reliability requirement associated with the first traffic flow; selecting a first link adaptation process from a plurality of link adaptation processes based on the first category; and transmitting the first traffic flow to the receiving node based on the first link adaptation process.

Methods and apparatus for performing link adaptation processes in a network

A method of scheduling data transmission of a group of wireless devices, in a wireless communication network, comprising:

Scheduling of a data transmission

A method for operating an access point providing access to a wireless network for a plurality of wireless devices, wherein the wireless network includes at least one transmission channel with a sequence of transmission slots. The method includes assigning a first transmission slot to a first wireless device for a scheduled transmission with a priority access to the first transmission slot for the first wireless device, detecting during the first transmission slot that the first wireless device is currently not transmitting data in the assigned first transmission slot, and transmitting an indication to at least a subset of the plurality of wireless devices indicating that at least a time range in the first transmission slot until an end of the first transmission slot is available to the plurality of wireless devices for a data transmission using a random access procedure.

Scheduled transmission

During transmission of data by radio transmissions from a first radio device to a second radio device, a third radio device is controlled to transmit an interference signal on radio resources used by the radio transmissions from the first radio device to the second radio device. The transmission of the data is coordinated with transmission of the interference signal, and an effect of the interference signal on the radio transmissions is monitored.

Transmission coordination for interference assessment

Embodiments include methods for decompression of headers of received Internet Protocol (IP) packets, such as by a device. Such methods include receiving a single transmission unit that includes a bitmap comprising a plurality of bits, and an aggregation of a first IP packet and a reference IP packet. Each bit in the bitmap indicates whether a corresponding header information element, of a header of the first IP packet, is redundant or non-redundant with respect to a corresponding header information element of a header of the reference IP packet. Such methods include reconstructing the header of the first IP packet based on the header of the reference IP packet and on the bitmap, and decompressing the header of the first IP packet. Other embodiments include devices configured to perform operations corresponding to such methods, and computer-readable media comprising computer-executable instructions that embody such methods.

Methods for compression and decompression of headers of internet protocol packets, devices, computer programs and computer program products

A method and an access node of a wireless network, for controlling uplink transmissions from wireless devices. It is detected that both a Narrow Band wireless device capable of receiving signals on a first narrow bandwidth channel and one or more legacy wireless devices capable of receiving signals on a second broad bandwidth channel are present. The second broad channel covers the first narrow channel. When receiving an uplink transmission from the Narrow Band device that indicates pending uplink data, the access node performs a downlink transmission that both Narrow Band wireless devices and legacy wireless devices can receive and decode. The downlink transmission indicates that the Narrow Band wireless device is allowed to transmit its pending uplink data on allocated resources within the first bandwidth channel, and that the second bandwidth channel is occupied.

Method and access node for controlling uplink transmissions in a wireless network

The application relates to a method for operating a first wireless device () in a wireless network. At least one target wireless device () is determined which should receive a wake up signal by which a wake up receiver of the at least one target wireless device is informed that a main transceiver of the target wireless device should be ready for receiving at least a first message from the first wireless device, Furthermore a frequency is determined at which the at least first message should be transmitted to the at least one target wireless device, and a frequency information is encoded into the wake up signal with which at least one target wireless device is informed about the frequency at which the at least first message will be received. The wake up signal is transmitted with the encoded frequency information to the at least one target wireless device.

Wake-up signal with frequency information

There is provided mechanisms for handling acknowledgements from nodes in a wireless radio ad-hoc network. A method is performed by a gateway of the wireless radio ad-hoc network. The method comprises transmitting radio signalling to nodes in the wireless radio ad-hoc network. The transmitted radio signalling is addressed to, and requiring acknowledgement from, at least one node in the wireless radio ad-hoc network. The method comprises receiving radio signalling from a node in the wireless radio ad-hoc network. The received radio signalling comprises one in-packet Bloom Filter comprising acknowledgement of the transmitted radio signalling from at least one of the nodes.

Handling of acknowledgement in wireless radio ad-hoc networks

A method () performed in a device () for compression of headers of Internet Protocol, IP, packets, is described. The method () comprises aggregating () a first IP packet () and a reference IP packet () into a single transmission unit (); identifying () header information elements in the first IP packet () to be redundant or non-redundant; indicating () the header information elements to be redundant or non-redundant by a bitmap; and compressing () the header of the first IP packet () according to the bitmap. A corresponding method for decompressing is also provided, and devices, computer programs and computer program products.

Embodiments herein relate to a method performed by a network node for enabling channel estimation in a wireless communications network. The wireless communications network includes at least a first and a second Access Point, AP, having overlapping cells using contention-based transmission resources of the same frequency. The first network node controls the first AP to transmit information indicating that wireless devices served by the first AP are not to contend for the contention-based transmission resources when the second AP is transmitting a Null Data Packet, NDP. Then, the first network node controls the second AP to transmit a NDP. Embodiments of the first network node are also described. Embodiments herein also relate to a method performed by a wireless device for enabling channel estimation in a wireless communications network, and embodiments of the wireless device.

Network node, a wireless device and methods therein for enabling channel estimations in a wireless communications network

A network node, a wireless device and respective methods performed thereby for the network node to provide information to one or more wireless devices are provided. The network node and the wireless device are operable in a wireless communication network. The method performed by the network node comprises transmitting () a first message by means of broadcast indicating that a second message associated with the first message will be broadcasted after the transmission of the first message, the first message also indicating to the one or more wireless devices that feedback with regard to the second message is required should the second message not be received; and transmitting () the second message by means of broadcast.

Growing community of inventors

Espoo, Finland

Luis Felipe Del Carpio Vega