Abstract: Embodiments herein relate to a network node for handling a Radio Access Network, (RAN) context information of a wireless device in a cell served by the network node in a wireless communications network. The network node stores the RAN context information of the wireless device when the wireless device is no longer in a connected state in the cell. When the wireless device has returned to a connected state in the cell, the network node receives information indicating a RAN context information from the wireless device. Also, the network node transmits, to the wireless device, information indicating that the wireless device is to use the indicated RAN context information in the cell when the indicated RAN context information is such that it can be reused with the RAN context information of the wireless device previously stored by the network node. Embodiments of the network node are also described.

Abstract: A wireless device handles area update reports. The wireless device initiates (1502) a radio network area update, RNAU, responsive to detecting that the wireless device has entered a cell not belonging to a radio network area, RNA, configured for the wireless device. The wireless device receives (1504), from the wireless network, a message indicating that the wireless device's attempt to perform the RNAU has been rejected. The message includes or is accompanied by an indication that a wait time value is applicable. Responsive to the message, the wireless device sets (1506) a reject wait timer to the wait time value and performs (1508) the RNAU upon expiry of the reject wait timer. In some embodiments, the wireless device sets a periodic RNAU timer to the wait time value, responsive to the message, and performs the RNAU upon expiry of the reject wait timer and the periodic RNAU timer.

Abstract: Exemplary embodiments include methods and/or procedures performed by a first centralized unit, CU, in a radio access network for configuring a user equipment, UE, to communicate via a plurality of distributed units, DUs. Such embodiments include initiating a first radio resource control, RRC, entity to communicate with the UE via a first DU. Such embodiments also include selecting a second DU to communicate with the UE in a dual-connectivity, DC, configuration with the first DU. Such embodiments also include, based on whether the selected second DU is associated with the first CU, determining whether to initiate a second RRC entity, within the first CU, to communicate with the UE via the second DU. Other embodiments include complementary methods and/or procedures performed by UEs; CUs and UEs configured to perform such methods and/or procedures; and computer-readable media storing instructions corresponding to such methods and/or procedures.

Abstract: According to an aspect, a wireless device sends, while in an RRC inactive state, a message requesting resumption of an RRC connected state. Upon sending the message, the wireless device starts a timer according to a predetermined value. While the timer is running, the wireless device attempts decryption and integrity check handling for packets subsequently received from the wireless network.

Abstract: A method (400) of generating a cryptographic checksum for a message M(x) is provided. The method is performed by a communication device, such as a sender or a receiver, and comprises calculating (405) the cryptographic checksum as a first function g of a division of a second function of M(x), ƒ(M(x)), modulo a generator polynomial p(x) of degree n, g(ƒ(M(x))mod p(x)). The generator polynomial is calculated (403) as p(x)=(1?x)·P1(x), and P1(x) is a primitive polynomial of degree n?1. The primitive polynomial is selected (402), based on a first cryptographic key, from the set of primitive polynomials of degree n?1 over a Galois Field. By replacing a standard checksum with a cryptographic checksum, an efficient message authentication is provided. The proposed cryptographic checksum may be used for providing integrity assurance on the message, i.e., for detecting random and intentional message changes, with a known level of security.

Abstract: A method implemented in a user equipment (UE) includes connecting to a WLAN access point. The method further includes constructing a domain name for a packet system network, the domain name including network partition information for the packet system network. The method further includes transmitting, to a DNS server via the WLAN access point, the constructed domain name. The method further includes receiving, from the server, at least one address corresponding to a network node associated with the network partition information.

Abstract: A wireless device is configured for wirelessly communicating with one or more types of Radio Access Networks (RANs) providing control-plane connectivity to one or both of a first type of core network and a second type of core network. The device configures a Packet Data Convergence Protocol (PDCP) at the device, e.g., at least for initial control-plane signaling, in dependence on whether the device is connected, or connecting, to the first type or the second type of core network. In at least one embodiment, the device configures PDCP for the second type of core network as a default choice, when control-plane connectivity to the second core network is available. In an example arrangement, the RAN types are LTE and 5G New Radio (NR), and the core network types are Evolved Packet Core (EPC) and 5G New Generation Core Network (NGCN).

Abstract: There is provided a method for determining a security context for communication between a wireless device and a target network node at handover. The method comprises obtaining (S1) information representative of the type of Radio Access Technology, also referred to as RAT type, of the target network node, and deriving and/or determining (S2) the security context at least partly based on the information representative of the RAT type.

Abstract: The present disclosure relates in general to cellular radio network communication. In one of its aspects, the technology presented herein concerns a method implemented in a receiver for detecting delayed or lost signaling messages. The signaling messages are receivable both over a Master Node, MN, and a Secondary Node, SN, and detecting delayed or lost signaling messages is based on sequence number. The method comprises detecting a gap in sequence numbers of received signaling messages.

Abstract: Methods, User Equipment, UE, (120) and source network node (111) for resuming a Radio Resource Control, RRC, connection to a target cell in a wireless communications network (100). The UE generates a security token using a set of input parameters, and sends a resuming request with the security token to a target network node (112) serving the target cell. When receiving the resuming request, the source network node generates a security token using a set of input parameters in the same manner as the UE. If the received security token is successfully verified when compared with the generated security token, the source network node provides to the target network node a UE context of the UE, to enable the target network node to resume the RRC connection.

Abstract: Exemplary embodiments include methods and/or procedures performed by a first intermediate node of a multi-hop, integrated access backhaul communication network. Embodiments include receiving a data packet destined for a target node of the communication network, the first intermediate node being configured to communicate with the target node via a second intermediate node of the network. Embodiments include determining an address for the data packet based on a mapping function associated with the target node, and forming a packet header, including the previously-determined address, for the data packet. Forming the packet header can include at least one of the following operations: excluding one or more higher-layer protocol headers related to the second intermediate node; and incorporating without modification a portion, associated with the target node, of an existing header of the data packet.

Abstract: A wireless communication device (16) is configured for use in a wireless communication system (10). The wireless communication device (16) is configured to receive control signaling (22) that indicates a certain wait time (24) for which the wireless communication device (16) is required to wait before sending a certain control message (20) to network equipment (18). A subset of possible wait times must be indicated by integrity-protected control signaling. The wireless communication device (16) may therefore also be configured to accept or reject the certain wait time (24) as being required before sending the certain control message (20), based on whether the received control signaling (22) was integrity protected and on whether the certain wait time (24) is included in the subset of possible wait times which must be indicated by integrity-protected control signaling.

Abstract: Exemplary embodiments include methods and/or procedures for Packet Data Convergence Protocol, PDCP, processing performed in a network node of a multi-hop, integrated access backhaul, IAB, communication network. Exemplary methods can include receiving (610) a configuration that includes a first characteristic associated with at least one of the following: the node and data packets received by the network node. Exemplary methods can also include receiving (620) a data packet having one or more packet characteristics, and determining (630) if there is a match between the one or more packet characteristics and the first characteristic. Exemplary methods can also include enabling or disabling (640) a first PDCP processing operation on the data packet based on the result of the determination. Other exemplary embodiments include network nodes configured and/or arranged to perform operations corresponding to the exemplary methods and/or procedures.

Abstract: The present disclosure relates to base station and method for content synchronization when broadcasting data in a communications network. The base station comprises a receiver receiving data sequences and a transmitter for transmitting data sequences. Each data sequence has a data size and comprises a sequence number (SN). The base station further comprises a processing circuitry configured to add byte numbered sequence numbers to said data sequences passed between layers in a protocol stack for transmission to a transceiver station.

Abstract: One aspect of the disclosure provides a method in a wireless terminal device for use with a telecommunications network. The wireless terminal device is operable in a plurality of states, including a first state and a second state. The second state requires less signalling overhead with the telecommunications network than the first state.

Abstract: The present invention relates to the coordination of simultaneous multi-RAT camping in a wireless communication network that provides radio access for a terminal device via at least a first and second wireless radio access operating with different radio access technologies.

Abstract: Systems and methods are disclosed herein for updating stored User Equipment (UE) context information upon re-suspend of the UE in response to a resume request from the UE. In some embodiments, a method in a UE comprises transmitting a Radio Resource Control (RRC) resume request message and, in response to the RRC resume request message, receiving an RRC connection release message with an indication for suspend. The method further comprises, in response to receiving the RRC connection release message with an indication for suspend, replacing information in a stored Access Stratum (AS) context of the UE with new information.

Abstract: A first node (110) and a method therein for managing modes of operation of a service, referred to as “service modes” are disclosed. The service is executed in the first node (110). The service is capable of communicating with a second node (120) over a wireless network (100). The first node (110) receives an estimated level of a connectivity for the service from the wireless network (100). The estimated level of the connectivity relates to likelihood of maintaining the connectivity to the second node (120). The first node (110) selects one of the service modes based on the estimated level of the connectivity. Moreover, corresponding computer programs and computer program products are disclosed.

Abstract: Methods are provided for a User Equipment, UE, in NR RRC to revert back to an old security context if an RRC Resume procedure from an inactive state fails. In this way, any subsequent Resume attempts by the UE will derive new security keys from the old keys, which means that the keys and security context will be the same for each attempt. In this way, the security context in the UE will remain synchronized with the network security context, regardless of how many attempts the UE has performed (assuming the network does not change the security context when the Resume procedure fails). Alternatively, the UE may store the new security context it derives during the first Resume attempt, and then ensure that it is reused at subsequent Resume attempts.

Abstract: According to certain embodiments, a target network node for communicating with a user equipment (UE) that was previously in communication with a source network node, comprises an interface operably coupled to processing circuitry. The interface is configured to receive a connection resume request from the user equipment, wherein the connection resume request comprises a resume identification associated with the source network node. The processing circuitry is configured to determine that the UE was previously in communication with the source network node. The interface is further configured to transmit the connection resume request to the source network node, receive a radio resource control (RRC) response from the source network node, and forward the RRC response to the UE.