Nokia Technologies Oy (Espoo, FI)
Embodiments of the present invention pertain to random access within an electronic communication system. A first device receives an criterion for selecting an access type that is random to perform random access to a second device. The first device determines if the first device has been allocated a contention free random access resource to a specific type of random access. In based on this conclusion it then executes random access to the second devices in a conditional manner. The device can therefore conditionally apply the criteria for selecting the random access type when a non-contestable resource is allocated to a specific random access type. This will allow it to perform random access more efficiently.
Different wireless communication systems have been developed and are currently being developed to satisfy the growing demand for communications services. Before receiving a communication service from wireless communications systems the terminal device must to establish a connection with the network.
Random access (RA) is a method that allows a terminal device establish or establish a link to a network device like an Evolved NodeB. It is possible to use either contention-free random accessibility (CFRA) or contention-based randomaccess (CBRA) can be used to carry out the RA process. CFRA refers only to dedicated RA resources, whereas CBRA is for shared RA resources. After the connection is established or reestablished, the network device canassign resources to a particular terminal device in support of further communication with the network device.
In general, example examples of the present disclosure offer an answer to random access.
A first aspect provides the first device. The first device has at least 1 processor and at least one memory, including computer programming codes. If the criteria to select a first random type of device to provide random access to a second device is satisfied, the first device will determine if it is permitted to use a contention free randomaccess resource for this purpose, and execute random access to the second device based on that determination.
In a second aspect it is possible to provide another device. The second device is comprised of at least one processor and at least one memory including computer program code. In this case, at least one memory and computer program code are configured to, with at-least one processor allow the second device to give indication information to the first device, including the indication information which indicates how the device in question is permitted to utilize a non-contesting random access resource that is allocated to an additional type of random access, if a criterion to select a first random access type that allows random access for the second device is met and execute the random access on the first device.
In a third aspect the invention provides a method. The method comprises detecting that the criteria to choose the first type of random access for performing random access to another device is met; determining whether the first device is permitted to use acontention-free random access resource assigned to an additional type of random access in the event that the criteria for selecting the first random access type is satisfied; and then performing the random access for the second device on the determination.
In a fourth aspect, there is an approach. The method comprises providing indication information for one device, and the indication information indicating whether the device in question is permitted to use a contention-free random access resource allocated for a second random access type if a criterion to select the first random access type for random access to the second device is satisfied and then performing the random access with the first device.
Fifth aspect shows the first apparatus. The first apparatus has a means to determine whether a requirement to select a first type of random access resource that can provide random access to another device is satisfied. If so the determination is made to determine whether the device can use a contention-free resource for random access to the second kind.
In the sixth aspect, there is provided an additional apparatus. The second apparatus comprises means for providing indication information for a prior apparatus, the indication information indicating how the first apparatus will be able to utilize a contention-free random access resource assigned to another type of random access when a requirement to select a primary random access type to perform random access to another apparatus is met as well as a means to perform the random access on the firstapparatus.
Computer-readable media are described in the seventh aspect. The computer-readable medium includes instructions that program an apparatus to execute at least the method according to one of the above third and fourth aspects.
It is important to understand that the summary portion is not intended to identify key or important features of embodiments of the present disclosure, nor is it intended to to restrict the scope of the disclosed disclosure. Other aspects of the present disclosure will be readily understood by reading the following description.
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