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This letter considers a wireless M2M communication scenario with a massivenumber of M2M devices. Each device needs to send its reports within a givendeadline and with certain reliability, e. g. 99.99%. A pool of resourcesavailable to all M2M devices is periodically available for transmission. Thenumber of transmissions required by an M2M device within the pool is random dueto two reasons - random number of arrived reports since the last reportingopportunity and requests for retransmission due to random channel errors. Weshow how to dimension the pool of M2M-dedicated resources in order to guaranteethe desired reliability of the report delivery within the deadline. The factthat the pool of resources is used by a massive number of devices allows tobase the dimensioning on the central limit theorem. The results are interpretedin the context of LTE, but they are applicable to any M2M communication system.

Reliable Reporting for Massive M2M Communications with Periodic Resource Pooling